== sanity test 398b: DIO and buffer IO race ============== 12:25:08 (1786033508) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.63251 s, 5.8 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=143442: Thu Aug 6 12:29:44 2026 read: IOPS=5, BW=23.9KiB/s (24.4kB/s)(5992KiB/250998msec) clat (usec): min=28, max=1416.8k, avg=84458.48, stdev=81274.57 lat (usec): min=28, max=1416.8k, avg=84462.69, stdev=81274.31 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 16450], | 20.00th=[ 36439], 30.00th=[ 45876], 40.00th=[ 55837], | 50.00th=[ 68682], 60.00th=[ 82314], 70.00th=[ 98042], | 80.00th=[ 117965], 90.00th=[ 164627], 95.00th=[ 202376], | 99.00th=[ 367002], 99.50th=[ 471860], 99.90th=[1082131], | 99.95th=[1417675], 99.99th=[1417675] bw ( KiB/s): min= 6, max= 71, per=26.76%, avg=25.42, stdev=13.59, samples=449 iops : min= 1, max= 17, avg= 5.68, stdev= 3.43, samples=449 write: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6296KiB/250998msec); 0 zone resets clat (usec): min=1078, max=786307, avg=78479.50, stdev=84319.28 lat (usec): min=1080, max=786308, avg=78485.01, stdev=84319.46 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1450], 10.00th=[ 2900], 20.00th=[ 9110], | 30.00th=[ 19006], 40.00th=[ 39060], 50.00th=[ 55313], 60.00th=[ 76022], | 70.00th=[100140], 80.00th=[132645], 90.00th=[183501], 95.00th=[231736], | 99.00th=[383779], 99.50th=[455082], 99.90th=[784335], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 6, max= 111, per=25.94%, avg=25.94, stdev=14.52, samples=463 iops : min= 1, max= 27, avg= 5.80, stdev= 3.67, samples=463 lat (usec) : 50=0.36%, 100=3.61%, 250=0.10%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=4.72%, 4=1.24%, 10=5.37%, 20=5.34%, 50=19.53% lat (msec) : 100=29.92%, 250=25.91%, 500=3.39%, 750=0.20%, 1000=0.07% lat (msec) : 2000=0.07% cpu : usr=0.05%, sys=3.05%, ctx=6529, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143443: Thu Aug 6 12:29:44 2026 read: IOPS=5, BW=23.9KiB/s (24.4kB/s)(5940KiB/248871msec) clat (usec): min=36, max=1425.7k, avg=84577.59, stdev=74965.39 lat (usec): min=36, max=1425.7k, avg=84581.30, stdev=74964.49 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 70], 10.00th=[ 22414], | 20.00th=[ 38011], 30.00th=[ 50070], 40.00th=[ 59507], | 50.00th=[ 69731], 60.00th=[ 81265], 70.00th=[ 99091], | 80.00th=[ 122160], 90.00th=[ 160433], 95.00th=[ 202376], | 99.00th=[ 304088], 99.50th=[ 341836], 99.90th=[ 893387], | 99.95th=[1417675], 99.99th=[1417675] bw ( KiB/s): min= 6, max= 71, per=26.05%, avg=24.74, stdev=13.35, samples=459 iops : min= 1, max= 17, avg= 5.50, stdev= 3.37, samples=459 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6348KiB/248871msec); 0 zone resets clat (usec): min=1122, max=836286, avg=77240.74, stdev=85523.23 lat (usec): min=1123, max=836286, avg=77243.43, stdev=85522.98 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1450], 10.00th=[ 4228], 20.00th=[ 9896], | 30.00th=[ 20055], 40.00th=[ 35914], 50.00th=[ 52691], 60.00th=[ 73925], | 70.00th=[ 96994], 80.00th=[125305], 90.00th=[177210], 95.00th=[242222], | 99.00th=[379585], 99.50th=[471860], 99.90th=[683672], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 93, per=25.84%, avg=25.84, stdev=15.14, samples=468 iops : min= 1, max= 23, avg= 5.78, stdev= 3.84, samples=468 lat (usec) : 50=0.29%, 100=3.16%, 250=0.26%, 500=0.03%, 750=0.03% lat (msec) : 2=4.26%, 4=0.98%, 10=5.50%, 20=5.60%, 50=19.76% lat (msec) : 100=31.22%, 250=25.13%, 500=3.45%, 750=0.23%, 1000=0.07% lat (msec) : 2000=0.03% cpu : usr=0.05%, sys=3.10%, ctx=6577, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143444: Thu Aug 6 12:29:44 2026 read: IOPS=6, BW=24.0KiB/s (24.6kB/s)(6028KiB/250832msec) clat (usec): min=30, max=1404.1k, avg=80542.87, stdev=70000.76 lat (usec): min=31, max=1404.1k, avg=80552.23, stdev=70013.74 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 69], 10.00th=[ 21890], | 20.00th=[ 36439], 30.00th=[ 45351], 40.00th=[ 55313], | 50.00th=[ 66847], 60.00th=[ 79168], 70.00th=[ 93848], | 80.00th=[ 114820], 90.00th=[ 156238], 95.00th=[ 191890], | 99.00th=[ 312476], 99.50th=[ 383779], 99.90th=[ 450888], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 6, max= 85, per=26.95%, avg=25.60, stdev=14.73, samples=451 iops : min= 1, max= 21, avg= 5.71, stdev= 3.72, samples=451 write: IOPS=6, BW=24.0KiB/s (25.6kB/s)(6260KiB/250832msec); 0 zone resets clat (usec): min=1073, max=902818, avg=82239.87, stdev=93754.10 lat (usec): min=1074, max=902820, avg=82243.23, stdev=93752.68 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1467], 10.00th=[ 3752], 20.00th=[ 9372], | 30.00th=[ 17695], 40.00th=[ 35914], 50.00th=[ 55313], 60.00th=[ 76022], | 70.00th=[101188], 80.00th=[135267], 90.00th=[196084], 95.00th=[254804], | 99.00th=[434111], 99.50th=[501220], 99.90th=[826278], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 6, max= 95, per=25.15%, avg=25.15, stdev=14.49, samples=475 iops : min= 1, max= 23, avg= 5.61, stdev= 3.65, samples=475 lat (usec) : 50=0.33%, 100=3.09%, 250=0.26%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=4.23%, 4=1.11%, 10=5.83%, 20=5.73%, 50=19.53% lat (msec) : 100=31.12%, 250=24.87%, 500=3.45%, 750=0.13%, 1000=0.10% lat (msec) : 2000=0.03% cpu : usr=0.05%, sys=3.06%, ctx=6491, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143445: Thu Aug 6 12:29:44 2026 read: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6052KiB/246223msec) clat (usec): min=34, max=891619, avg=79353.25, stdev=66732.16 lat (usec): min=34, max=891621, avg=79360.15, stdev=66733.33 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 65], 10.00th=[ 15926], 20.00th=[ 33817], | 30.00th=[ 43779], 40.00th=[ 54264], 50.00th=[ 65274], 60.00th=[ 78119], | 70.00th=[ 93848], 80.00th=[115868], 90.00th=[156238], 95.00th=[196084], | 99.00th=[291505], 99.50th=[354419], 99.90th=[775947], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 6, max= 71, per=27.23%, avg=25.87, stdev=14.77, samples=448 iops : min= 1, max= 17, avg= 5.79, stdev= 3.72, samples=448 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6236KiB/246223msec); 0 zone resets clat (usec): min=1163, max=1591.5k, avg=80357.89, stdev=96857.16 lat (usec): min=1164, max=1591.5k, avg=80360.26, stdev=96856.89 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1450], 10.00th=[ 3654], | 20.00th=[ 9503], 30.00th=[ 17171], 40.00th=[ 35390], | 50.00th=[ 55313], 60.00th=[ 76022], 70.00th=[ 99091], | 80.00th=[ 130548], 90.00th=[ 187696], 95.00th=[ 250610], | 99.00th=[ 421528], 99.50th=[ 509608], 99.90th=[ 893387], | 99.95th=[1585447], 99.99th=[1585447] bw ( KiB/s): min= 6, max= 87, per=26.03%, avg=26.03, stdev=14.98, samples=458 iops : min= 1, max= 21, avg= 5.84, stdev= 3.79, samples=458 lat (usec) : 50=0.62%, 100=3.39%, 250=0.23%, 500=0.07%, 750=0.03% lat (msec) : 2=4.23%, 4=1.11%, 10=5.37%, 20=6.77%, 50=19.40% lat (msec) : 100=30.73%, 250=24.58%, 500=3.12%, 750=0.23%, 1000=0.10% lat (msec) : 2000=0.03% cpu : usr=0.05%, sys=3.01%, ctx=6469, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=95.7KiB/s (97.0kB/s), 23.9KiB/s-24.6KiB/s (24.4kB/s-25.2kB/s), io=23.4MiB (24.6MB), run=246223-250998msec WRITE: bw=100KiB/s (103kB/s), 24.0KiB/s-25.5KiB/s (25.6kB/s-26.1kB/s), io=24.6MiB (25.7MB), run=246223-250998msec fio: pid=143446, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=143446: Thu Aug 6 12:32:53 2026 read: IOPS=3, BW=12.0KiB/s (13.3kB/s)(5224KiB/402382msec) clat (msec): min=4, max=1477, avg=68.87, stdev=82.62 lat (msec): min=4, max=1477, avg=68.87, stdev=82.62 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 54], | 70.00th=[ 70], 80.00th=[ 100], 90.00th=[ 155], 95.00th=[ 209], | 99.00th=[ 351], 99.50th=[ 451], 99.90th=[ 776], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7, max= 78, per=34.99%, avg=18.20, stdev=13.17, samples=546 iops : min= 1, max= 19, avg= 3.89, stdev= 3.33, samples=546 write: IOPS=3, BW=13.7KiB/s (14.0kB/s)(5504KiB/402382msec); 0 zone resets clat (msec): min=36, max=1186, avg=226.73, stdev=149.33 lat (msec): min=36, max=1186, avg=226.73, stdev=149.33 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 78], 10.00th=[ 94], 20.00th=[ 116], | 30.00th=[ 138], 40.00th=[ 159], 50.00th=[ 182], 60.00th=[ 209], | 70.00th=[ 249], 80.00th=[ 317], 90.00th=[ 422], 95.00th=[ 531], | 99.00th=[ 760], 99.50th=[ 894], 99.90th=[ 1062], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 6, max= 56, per=26.65%, avg=14.66, stdev= 8.57, samples=706 iops : min= 1, max= 14, avg= 2.99, stdev= 2.20, samples=706 lat (msec) : 10=0.82%, 20=7.72%, 50=19.46%, 100=17.48%, 250=37.68% lat (msec) : 500=13.34%, 750=2.87%, 1000=0.48%, 2000=0.11% cpu : usr=0.02%, sys=0.90%, ctx=4797, majf=0, minf=20 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1307,1376,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143447: Thu Aug 6 12:32:53 2026 read: IOPS=3, BW=13.6KiB/s (13.9kB/s)(5940KiB/438063msec) clat (msec): min=6, max=1095, avg=68.00, stdev=84.54 lat (msec): min=6, max=1095, avg=68.00, stdev=84.54 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 66], 80.00th=[ 90], 90.00th=[ 142], 95.00th=[ 220], | 99.00th=[ 368], 99.50th=[ 531], 99.90th=[ 1053], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 79, per=36.22%, avg=18.83, stdev=13.22, samples=601 iops : min= 1, max= 19, avg= 4.05, stdev= 3.34, samples=601 write: IOPS=3, BW=14.5KiB/s (14.8kB/s)(6348KiB/438063msec); 0 zone resets clat (msec): min=43, max=1185, avg=211.97, stdev=140.99 lat (msec): min=43, max=1185, avg=211.97, stdev=140.99 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 75], 10.00th=[ 90], 20.00th=[ 111], | 30.00th=[ 130], 40.00th=[ 148], 50.00th=[ 169], 60.00th=[ 197], | 70.00th=[ 230], 80.00th=[ 288], 90.00th=[ 393], 95.00th=[ 502], | 99.00th=[ 735], 99.50th=[ 869], 99.90th=[ 1062], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 47, per=28.09%, avg=15.45, stdev= 8.64, samples=775 iops : min= 1, max= 11, avg= 3.19, stdev= 2.23, samples=775 lat (msec) : 10=0.91%, 20=7.36%, 50=19.82%, 100=19.50%, 250=37.11% lat (msec) : 500=12.43%, 750=2.25%, 1000=0.42%, 2000=0.20% cpu : usr=0.03%, sys=0.91%, ctx=5545, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143448: Thu Aug 6 12:32:53 2026 read: IOPS=3, BW=13.7KiB/s (14.0kB/s)(6028KiB/439661msec) clat (msec): min=5, max=804, avg=69.47, stdev=74.83 lat (msec): min=5, max=804, avg=69.48, stdev=74.83 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 70], 80.00th=[ 99], 90.00th=[ 155], 95.00th=[ 209], | 99.00th=[ 355], 99.50th=[ 426], 99.90th=[ 785], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 80, per=33.89%, avg=17.62, stdev=12.36, samples=649 iops : min= 1, max= 20, avg= 3.75, stdev= 3.13, samples=649 write: IOPS=3, BW=14.2KiB/s (14.6kB/s)(6260KiB/439661msec); 0 zone resets clat (msec): min=38, max=1323, avg=213.71, stdev=143.12 lat (msec): min=38, max=1323, avg=213.72, stdev=143.12 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 75], 10.00th=[ 92], 20.00th=[ 113], | 30.00th=[ 132], 40.00th=[ 150], 50.00th=[ 169], 60.00th=[ 199], | 70.00th=[ 234], 80.00th=[ 288], 90.00th=[ 397], 95.00th=[ 510], | 99.00th=[ 709], 99.50th=[ 869], 99.90th=[ 1028], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 47, per=28.12%, avg=15.46, stdev= 8.56, samples=764 iops : min= 1, max= 11, avg= 3.20, stdev= 2.21, samples=764 lat (msec) : 10=0.68%, 20=6.80%, 50=19.53%, 100=19.53%, 250=38.57% lat (msec) : 500=12.01%, 750=2.41%, 1000=0.33%, 2000=0.13% cpu : usr=0.03%, sys=0.91%, ctx=5458, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143449: Thu Aug 6 12:32:53 2026 read: IOPS=3, BW=13.9KiB/s (14.2kB/s)(6052KiB/435559msec) clat (msec): min=5, max=1094, avg=66.74, stdev=76.09 lat (msec): min=5, max=1094, avg=66.75, stdev=76.09 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 92], 90.00th=[ 144], 95.00th=[ 211], | 99.00th=[ 355], 99.50th=[ 451], 99.90th=[ 659], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 79, per=36.17%, avg=18.81, stdev=13.30, samples=613 iops : min= 1, max= 19, avg= 4.05, stdev= 3.38, samples=613 write: IOPS=3, BW=14.3KiB/s (14.7kB/s)(6236KiB/435559msec); 0 zone resets clat (msec): min=42, max=1611, avg=214.33, stdev=142.42 lat (msec): min=42, max=1611, avg=214.34, stdev=142.42 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 77], 10.00th=[ 90], 20.00th=[ 115], | 30.00th=[ 133], 40.00th=[ 150], 50.00th=[ 174], 60.00th=[ 201], | 70.00th=[ 236], 80.00th=[ 296], 90.00th=[ 397], 95.00th=[ 493], | 99.00th=[ 693], 99.50th=[ 835], 99.90th=[ 1301], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 48, per=27.86%, avg=15.32, stdev= 8.40, samples=767 iops : min= 1, max= 12, avg= 3.16, stdev= 2.16, samples=767 lat (msec) : 10=1.04%, 20=7.26%, 50=20.05%, 100=19.30%, 250=37.17% lat (msec) : 500=12.57%, 750=2.28%, 1000=0.13%, 2000=0.20% cpu : usr=0.03%, sys=0.92%, ctx=5599, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=52.9KiB/s (54.1kB/s), 12.0KiB/s-13.9KiB/s (13.3kB/s-14.2kB/s), io=22.7MiB (23.8MB), run=402382-439661msec WRITE: bw=55.4KiB/s (56.7kB/s), 13.7KiB/s-14.5KiB/s (14.0kB/s-14.8kB/s), io=23.8MiB (24.9MB), run=402382-439661msec mix direct rw 16384 by fio with 4 jobs... mix buffer rw 16384 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=143528: Thu Aug 6 12:33:45 2026 read: IOPS=9, BW=158KiB/s (162kB/s)(5920KiB/37497msec) clat (usec): min=34, max=277562, avg=50286.67, stdev=40807.18 lat (usec): min=34, max=277564, avg=50288.01, stdev=40807.17 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 87], | 30.00th=[ 30016], 40.00th=[ 39584], 50.00th=[ 48497], 60.00th=[ 58459], | 70.00th=[ 65799], 80.00th=[ 77071], 90.00th=[100140], 95.00th=[115868], | 99.00th=[183501], 99.50th=[214959], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 24, max= 315, per=25.54%, avg=155.52, stdev=72.51, samples=73 iops : min= 1, max= 19, avg= 8.95, stdev= 4.54, samples=73 write: IOPS=10, BW=170KiB/s (174kB/s)(6368KiB/37497msec); 0 zone resets clat (usec): min=1642, max=301766, avg=46157.49, stdev=49824.56 lat (usec): min=1644, max=301768, avg=46165.76, stdev=49831.01 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1975], 10.00th=[ 4621], 20.00th=[ 7963], | 30.00th=[ 11207], 40.00th=[ 18220], 50.00th=[ 26870], 60.00th=[ 42730], | 70.00th=[ 56361], 80.00th=[ 79168], 90.00th=[113771], 95.00th=[147850], | 99.00th=[258999], 99.50th=[287310], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 31, max= 316, per=27.11%, avg=173.76, stdev=65.43, samples=71 iops : min= 1, max= 19, avg=10.10, stdev= 4.17, samples=71 lat (usec) : 50=1.82%, 100=7.81%, 250=0.52%, 500=0.13%, 750=0.13% lat (msec) : 2=2.60%, 4=2.21%, 10=8.59%, 20=9.51%, 50=25.39% lat (msec) : 100=29.69%, 250=10.94%, 500=0.65% cpu : usr=0.04%, sys=4.27%, ctx=1425, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143530: Thu Aug 6 12:33:45 2026 read: IOPS=9, BW=146KiB/s (150kB/s)(5744KiB/39304msec) clat (usec): min=36, max=343413, avg=55439.73, stdev=45604.94 lat (usec): min=36, max=343415, avg=55441.04, stdev=45604.95 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 1598], | 30.00th=[ 32637], 40.00th=[ 43779], 50.00th=[ 51119], 60.00th=[ 61080], | 70.00th=[ 70779], 80.00th=[ 89654], 90.00th=[108528], 95.00th=[126354], | 99.00th=[200279], 99.50th=[299893], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 24, max= 408, per=25.03%, avg=152.43, stdev=72.16, samples=74 iops : min= 1, max= 25, avg= 8.76, stdev= 4.59, samples=74 write: IOPS=10, BW=166KiB/s (170kB/s)(6544KiB/39304msec); 0 zone resets clat (usec): min=1481, max=301559, avg=46397.82, stdev=52731.88 lat (usec): min=1483, max=301561, avg=46399.87, stdev=52731.88 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 1876], 10.00th=[ 2704], 20.00th=[ 7308], | 30.00th=[ 10421], 40.00th=[ 16057], 50.00th=[ 27132], 60.00th=[ 43254], | 70.00th=[ 57410], 80.00th=[ 74974], 90.00th=[123208], 95.00th=[145753], | 99.00th=[250610], 99.50th=[283116], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 24, max= 352, per=25.99%, avg=166.58, stdev=78.68, samples=77 iops : min= 1, max= 22, avg= 9.65, stdev= 5.01, samples=77 lat (usec) : 50=1.30%, 100=6.38%, 250=0.65%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=4.17%, 4=2.34%, 10=9.77%, 20=8.72%, 50=24.48% lat (msec) : 100=28.91%, 250=11.72%, 500=1.04% cpu : usr=0.06%, sys=4.19%, ctx=1478, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143532: Thu Aug 6 12:33:45 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6256KiB/37164msec) clat (usec): min=38, max=272031, avg=53053.55, stdev=43661.53 lat (usec): min=38, max=272032, avg=53055.01, stdev=43661.35 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 69], 20.00th=[ 157], | 30.00th=[ 29492], 40.00th=[ 38536], 50.00th=[ 47973], 60.00th=[ 58983], | 70.00th=[ 69731], 80.00th=[ 85459], 90.00th=[104334], 95.00th=[128451], | 99.00th=[206570], 99.50th=[212861], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 440, per=27.69%, avg=168.65, stdev=80.50, samples=72 iops : min= 1, max= 27, avg= 9.79, stdev= 5.09, samples=72 write: IOPS=10, BW=162KiB/s (166kB/s)(6032KiB/37164msec); 0 zone resets clat (usec): min=1490, max=249218, avg=43258.29, stdev=43915.08 lat (usec): min=1491, max=249220, avg=43260.39, stdev=43915.16 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1909], 10.00th=[ 3425], 20.00th=[ 7767], | 30.00th=[ 11600], 40.00th=[ 20055], 50.00th=[ 27395], 60.00th=[ 37487], | 70.00th=[ 57410], 80.00th=[ 74974], 90.00th=[105382], 95.00th=[128451], | 99.00th=[193987], 99.50th=[225444], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 346, per=24.95%, avg=159.96, stdev=70.39, samples=72 iops : min= 1, max= 21, avg= 9.24, stdev= 4.48, samples=72 lat (usec) : 50=0.52%, 100=9.11%, 250=0.78% lat (msec) : 2=2.60%, 4=2.99%, 10=7.81%, 20=7.42%, 50=28.39% lat (msec) : 100=28.52%, 250=11.72%, 500=0.13% cpu : usr=0.08%, sys=4.44%, ctx=1443, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143533: Thu Aug 6 12:33:45 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35725msec) clat (usec): min=36, max=244379, avg=50136.60, stdev=37590.17 lat (usec): min=36, max=244379, avg=50152.85, stdev=37591.85 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 1156], | 30.00th=[ 30540], 40.00th=[ 40109], 50.00th=[ 50070], 60.00th=[ 58459], | 70.00th=[ 68682], 80.00th=[ 80217], 90.00th=[ 96994], 95.00th=[110625], | 99.00th=[149947], 99.50th=[208667], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 31, max= 379, per=27.90%, avg=169.88, stdev=76.32, samples=69 iops : min= 1, max= 23, avg= 9.87, stdev= 4.83, samples=69 write: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35725msec); 0 zone resets clat (usec): min=1554, max=228291, avg=41949.32, stdev=42453.42 lat (usec): min=1555, max=228294, avg=41962.06, stdev=42468.47 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1811], 10.00th=[ 3720], 20.00th=[ 7439], | 30.00th=[ 10421], 40.00th=[ 15664], 50.00th=[ 26870], 60.00th=[ 41157], | 70.00th=[ 54789], 80.00th=[ 73925], 90.00th=[ 98042], 95.00th=[128451], | 99.00th=[185598], 99.50th=[210764], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 30, max= 346, per=27.38%, avg=175.50, stdev=77.26, samples=70 iops : min= 1, max= 21, avg=10.21, stdev= 4.89, samples=70 lat (usec) : 50=0.65%, 100=8.72%, 250=0.26%, 1000=0.13% lat (msec) : 2=4.30%, 4=1.30%, 10=8.85%, 20=9.77%, 50=24.48% lat (msec) : 100=32.42%, 250=9.11% cpu : usr=0.04%, sys=4.42%, ctx=1485, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=609KiB/s (624kB/s), 146KiB/s-169KiB/s (150kB/s-173kB/s), io=23.4MiB (24.5MB), run=35725-39304msec WRITE: bw=641KiB/s (657kB/s), 162KiB/s-175KiB/s (166kB/s-179kB/s), io=24.6MiB (25.8MB), run=35725-39304msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143527: Thu Aug 6 12:34:30 2026 read: IOPS=4, BW=71.4KiB/s (73.1kB/s)(5920KiB/82954msec) clat (msec): min=5, max=434, avg=56.30, stdev=48.90 lat (msec): min=5, max=434, avg=56.30, stdev=48.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 63], 80.00th=[ 73], 90.00th=[ 112], 95.00th=[ 150], | 99.00th=[ 232], 99.50th=[ 296], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 30, max= 254, per=29.12%, avg=82.69, stdev=49.68, samples=140 iops : min= 1, max= 15, avg= 4.39, stdev= 3.20, samples=140 write: IOPS=4, BW=76.8KiB/s (78.6kB/s)(6368KiB/82954msec); 0 zone resets clat (msec): min=48, max=522, avg=155.12, stdev=75.09 lat (msec): min=48, max=522, avg=155.12, stdev=75.09 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 90], | 30.00th=[ 106], 40.00th=[ 125], 50.00th=[ 140], 60.00th=[ 157], | 70.00th=[ 184], 80.00th=[ 211], 90.00th=[ 257], 95.00th=[ 300], | 99.00th=[ 401], 99.50th=[ 422], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 31, max= 224, per=26.70%, avg=79.85, stdev=41.76, samples=156 iops : min= 1, max= 14, avg= 4.20, stdev= 2.68, samples=156 lat (msec) : 10=1.04%, 20=6.77%, 50=20.31%, 100=27.86%, 250=37.63% lat (msec) : 500=6.25%, 750=0.13% cpu : usr=0.02%, sys=1.23%, ctx=1369, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143529: Thu Aug 6 12:34:30 2026 read: IOPS=4, BW=68.3KiB/s (69.9kB/s)(5744KiB/84106msec) clat (msec): min=6, max=404, avg=53.84, stdev=49.02 lat (msec): min=6, max=404, avg=53.84, stdev=49.02 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 50], | 70.00th=[ 61], 80.00th=[ 77], 90.00th=[ 103], 95.00th=[ 148], | 99.00th=[ 292], 99.50th=[ 305], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 24, max= 320, per=31.14%, avg=88.43, stdev=58.17, samples=128 iops : min= 1, max= 20, avg= 4.73, stdev= 3.70, samples=128 write: IOPS=4, BW=77.8KiB/s (79.7kB/s)(6544KiB/84106msec); 0 zone resets clat (msec): min=38, max=589, avg=158.07, stdev=82.23 lat (msec): min=38, max=589, avg=158.08, stdev=82.23 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 66], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 105], 40.00th=[ 123], 50.00th=[ 142], 60.00th=[ 163], | 70.00th=[ 182], 80.00th=[ 211], 90.00th=[ 259], 95.00th=[ 317], | 99.00th=[ 422], 99.50th=[ 485], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 30, max= 220, per=26.85%, avg=80.29, stdev=41.12, samples=160 iops : min= 1, max= 13, avg= 4.23, stdev= 2.64, samples=160 lat (msec) : 10=1.30%, 20=7.55%, 50=19.79%, 100=27.34%, 250=37.50% lat (msec) : 500=6.25%, 750=0.26% cpu : usr=0.04%, sys=1.21%, ctx=1396, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143531: Thu Aug 6 12:34:30 2026 read: IOPS=4, BW=75.5KiB/s (77.3kB/s)(6256KiB/82864msec) clat (msec): min=6, max=351, avg=56.74, stdev=50.17 lat (msec): min=6, max=351, avg=56.74, stdev=50.16 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 34], 50.00th=[ 43], 60.00th=[ 55], | 70.00th=[ 64], 80.00th=[ 81], 90.00th=[ 106], 95.00th=[ 153], | 99.00th=[ 292], 99.50th=[ 317], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 285, per=31.47%, avg=89.36, stdev=57.95, samples=138 iops : min= 1, max= 17, avg= 4.80, stdev= 3.71, samples=138 write: IOPS=4, BW=72.8KiB/s (74.5kB/s)(6032KiB/82864msec); 0 zone resets clat (msec): min=42, max=571, avg=160.15, stdev=78.74 lat (msec): min=42, max=571, avg=160.16, stdev=78.74 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 94], | 30.00th=[ 112], 40.00th=[ 127], 50.00th=[ 144], 60.00th=[ 161], | 70.00th=[ 186], 80.00th=[ 220], 90.00th=[ 264], 95.00th=[ 296], | 99.00th=[ 435], 99.50th=[ 485], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 25, max= 192, per=24.68%, avg=73.81, stdev=38.83, samples=160 iops : min= 1, max= 12, avg= 3.82, stdev= 2.52, samples=160 lat (msec) : 10=0.91%, 20=7.68%, 50=20.44%, 100=27.34%, 250=36.59% lat (msec) : 500=6.90%, 750=0.13% cpu : usr=0.04%, sys=1.25%, ctx=1450, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143534: Thu Aug 6 12:34:30 2026 read: IOPS=4, BW=72.4KiB/s (74.2kB/s)(6032KiB/83296msec) clat (msec): min=7, max=586, avg=55.73, stdev=55.19 lat (msec): min=7, max=586, avg=55.73, stdev=55.19 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 27], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 50], | 70.00th=[ 59], 80.00th=[ 73], 90.00th=[ 114], 95.00th=[ 157], | 99.00th=[ 271], 99.50th=[ 355], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 29, max= 317, per=29.57%, avg=83.98, stdev=55.02, samples=140 iops : min= 1, max= 19, avg= 4.45, stdev= 3.51, samples=140 write: IOPS=4, BW=75.1KiB/s (76.9kB/s)(6256KiB/83296msec); 0 zone resets clat (msec): min=42, max=787, avg=158.22, stdev=81.36 lat (msec): min=42, max=787, avg=158.23, stdev=81.36 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 79], 20.00th=[ 91], | 30.00th=[ 110], 40.00th=[ 126], 50.00th=[ 142], 60.00th=[ 161], | 70.00th=[ 184], 80.00th=[ 207], 90.00th=[ 257], 95.00th=[ 296], | 99.00th=[ 443], 99.50th=[ 485], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 29, max= 222, per=25.96%, avg=77.61, stdev=40.09, samples=158 iops : min= 1, max= 13, avg= 4.06, stdev= 2.59, samples=158 lat (msec) : 10=0.52%, 20=8.59%, 50=21.74%, 100=24.87%, 250=38.02% lat (msec) : 500=5.99%, 750=0.13%, 1000=0.13% cpu : usr=0.04%, sys=1.19%, ctx=1377, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=285KiB/s (292kB/s), 68.3KiB/s-75.5KiB/s (69.9kB/s-77.3kB/s), io=23.4MiB (24.5MB), run=82864-84106msec WRITE: bw=300KiB/s (307kB/s), 72.8KiB/s-77.8KiB/s (74.5kB/s-79.7kB/s), io=24.6MiB (25.8MB), run=82864-84106msec mix direct rw 1048576 by fio with 4 jobs... mix buffer rw 1048576 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=143555: Thu Aug 6 12:34:53 2026 read: IOPS=0, BW=949KiB/s (971kB/s)(7168KiB/7556msec) clat (msec): min=4, max=3088, avg=689.58, stdev=1071.91 lat (msec): min=4, max=3088, avg=689.58, stdev=1071.91 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 236], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 288], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 584], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 1648, max= 2031, per=90.46%, avg=1939.50, stdev=146.57, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=678KiB/s (694kB/s)(5120KiB/7556msec); 0 zone resets clat (msec): min=152, max=1098, avg=482.90, stdev=363.97 lat (msec): min=152, max=1098, avg=483.00, stdev=363.96 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1802, max= 2031, per=64.11%, avg=1924.00, stdev=94.09, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 10=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=5.81%, ctx=405, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143558: Thu Aug 6 12:34:53 2026 read: IOPS=0, BW=214KiB/s (220kB/s)(2048KiB/9551msec) clat (msec): min=336, max=353, avg=344.67, stdev=12.07 lat (msec): min=336, max=353, avg=344.67, stdev=12.08 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1580, max= 2027, per=84.12%, avg=1803.50, stdev=316.08, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1072KiB/s (1098kB/s)(10.0MiB/9551msec); 0 zone resets clat (msec): min=177, max=4150, avg=879.95, stdev=1252.92 lat (msec): min=184, max=4150, avg=880.89, stdev=1252.54 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 186], | 30.00th=[ 211], 40.00th=[ 247], 50.00th=[ 264], 60.00th=[ 376], | 70.00th=[ 401], 80.00th=[ 1070], 90.00th=[ 1720], 95.00th=[ 4144], | 99.00th=[ 4144], 99.50th=[ 4144], 99.90th=[ 4144], 99.95th=[ 4144], | 99.99th=[ 4144] bw ( KiB/s): min= 1924, max= 4063, per=100.00%, avg=3227.40, stdev=1134.13, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=4.70%, ctx=177, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143560: Thu Aug 6 12:34:53 2026 read: IOPS=0, BW=764KiB/s (782kB/s)(6144KiB/8045msec) clat (usec): min=555, max=558333, avg=255718.53, stdev=237561.19 lat (usec): min=557, max=558334, avg=255719.97, stdev=237560.71 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 12387], | 30.00th=[ 12387], 40.00th=[141558], 50.00th=[141558], 60.00th=[362808], | 70.00th=[459277], 80.00th=[459277], 90.00th=[557843], 95.00th=[557843], | 99.00th=[557843], 99.50th=[557843], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 1802, max= 3459, per=100.00%, avg=2306.75, stdev=773.73, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=764KiB/s (782kB/s)(6144KiB/8045msec); 0 zone resets clat (msec): min=248, max=4124, avg=1056.08, stdev=1511.22 lat (msec): min=248, max=4126, avg=1056.39, stdev=1511.76 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 447], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 4111], 95.00th=[ 4111], | 99.00th=[ 4111], 99.50th=[ 4111], 99.90th=[ 4111], 99.95th=[ 4111], | 99.99th=[ 4111] bw ( KiB/s): min= 1530, max= 4000, per=74.12%, avg=2224.40, stdev=1006.49, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 20=8.33%, 250=16.67%, 500=41.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.04%, sys=4.97%, ctx=178, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143561: Thu Aug 6 12:34:53 2026 read: IOPS=0, BW=623KiB/s (638kB/s)(5120KiB/8220msec) clat (usec): min=435, max=591149, avg=231036.23, stdev=245571.90 lat (usec): min=436, max=591151, avg=231037.44, stdev=245572.17 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], 20.00th=[ 437], | 30.00th=[ 490], 40.00th=[ 490], 50.00th=[274727], 60.00th=[274727], | 70.00th=[287310], 80.00th=[287310], 90.00th=[591397], 95.00th=[591397], | 99.00th=[591397], 99.50th=[591397], 99.90th=[591397], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 1729, max= 3061, per=100.00%, avg=2272.33, stdev=699.07, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 write: IOPS=0, BW=872KiB/s (893kB/s)(7168KiB/8220msec); 0 zone resets clat (msec): min=209, max=3682, avg=995.90, stdev=1244.03 lat (msec): min=209, max=3682, avg=995.96, stdev=1244.04 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 309], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 368], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 1301], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 1939, max= 3061, per=73.44%, avg=2203.80, stdev=480.25, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=16.67% lat (msec) : 250=8.33%, 500=41.67%, 750=8.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.82%, ctx=130, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2144KiB/s (2196kB/s), 214KiB/s-949KiB/s (220kB/s-971kB/s), io=20.0MiB (20.0MB), run=7556-9551msec WRITE: bw=3002KiB/s (3074kB/s), 678KiB/s-1072KiB/s (694kB/s-1098kB/s), io=28.0MiB (29.4MB), run=7556-9551msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143556: Thu Aug 6 12:34:54 2026 read: IOPS=0, BW=696KiB/s (713kB/s)(7168KiB/10298msec) clat (msec): min=134, max=3725, avg=982.10, stdev=1269.86 lat (msec): min=134, max=3725, avg=982.10, stdev=1269.86 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 207], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 523], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 1301], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 1467, max= 2027, per=97.60%, avg=1907.20, stdev=246.30, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=497KiB/s (509kB/s)(5120KiB/10298msec); 0 zone resets clat (msec): min=174, max=1536, avg=648.57, stdev=534.02 lat (msec): min=174, max=1536, avg=648.62, stdev=534.02 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 2019, max= 4031, per=98.63%, avg=2697.67, stdev=1154.76, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=25.00%, 500=16.67%, 750=33.33%, 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=1.08%, ctx=62, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143557: Thu Aug 6 12:34:54 2026 read: IOPS=0, BW=202KiB/s (206kB/s)(2048KiB/10156msec) clat (msec): min=152, max=229, avg=190.96, stdev=55.00 lat (msec): min=152, max=229, avg=190.96, stdev=55.00 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 1969, max= 2019, per=100.00%, avg=1994.00, stdev=35.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=1008KiB/s (1032kB/s)(10.0MiB/10156msec); 0 zone resets clat (msec): min=241, max=3648, avg=955.19, stdev=1148.95 lat (msec): min=241, max=3648, avg=955.26, stdev=1148.96 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 288], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 376], 60.00th=[ 439], | 70.00th=[ 531], 80.00th=[ 877], 90.00th=[ 2433], 95.00th=[ 3641], | 99.00th=[ 3641], 99.50th=[ 3641], 99.90th=[ 3641], 99.95th=[ 3641], | 99.99th=[ 3641] bw ( KiB/s): min= 1774, max= 4096, per=97.30%, avg=2661.17, stdev=1111.55, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=8.33%, 1000=8.33%, >=2000=16.67% cpu : usr=0.01%, sys=1.97%, ctx=76, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143559: Thu Aug 6 12:34:54 2026 read: IOPS=0, BW=632KiB/s (647kB/s)(6144KiB/9726msec) clat (msec): min=111, max=1152, avg=410.14, stdev=391.54 lat (msec): min=111, max=1152, avg=410.14, stdev=391.54 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 384], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1969, max= 2035, per=100.00%, avg=2011.40, stdev=25.23, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=632KiB/s (647kB/s)(6144KiB/9726msec); 0 zone resets clat (msec): min=307, max=4235, avg=1195.08, stdev=1508.33 lat (msec): min=307, max=4236, avg=1195.27, stdev=1508.61 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 4245], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 2011, max= 2043, per=74.00%, avg=2023.80, stdev=14.53, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=1.43%, ctx=60, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143562: Thu Aug 6 12:34:54 2026 read: IOPS=0, BW=489KiB/s (500kB/s)(5120KiB/10480msec) clat (msec): min=94, max=1985, avg=614.27, stdev=783.31 lat (msec): min=94, max=1985, avg=614.27, stdev=783.31 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 4039, max= 4039, per=100.00%, avg=4039.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=684KiB/s (700kB/s)(7168KiB/10480msec); 0 zone resets clat (msec): min=268, max=3620, avg=1051.03, stdev=1165.56 lat (msec): min=268, max=3620, avg=1051.11, stdev=1165.56 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 481], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 523], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 1083], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1939, max= 2048, per=73.37%, avg=2006.67, stdev=40.68, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 100=8.33%, 250=8.33%, 500=25.00%, 750=25.00%, 1000=8.33% lat (msec) : 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=1.31%, ctx=95, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1954KiB/s (2001kB/s), 202KiB/s-696KiB/s (206kB/s-713kB/s), io=20.0MiB (20.0MB), run=9726-10480msec WRITE: bw=2736KiB/s (2802kB/s), 497KiB/s-1008KiB/s (509kB/s-1032kB/s), io=28.0MiB (29.4MB), run=9726-10480msec mix direct rw 4194304 by fio with 4 jobs... mix buffer rw 4194304 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=143571: Thu Aug 6 12:35:19 2026 read: IOPS=0, BW=1443KiB/s (1478kB/s)(12.0MiB/8516msec) clat (msec): min=885, max=5876, avg=2754.40, stdev=2721.64 lat (msec): min=885, max=5876, avg=2754.40, stdev=2721.64 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 70.00th=[ 5873], 80.00th=[ 5873], 90.00th=[ 5873], 95.00th=[ 5873], | 99.00th=[ 5873], 99.50th=[ 5873], 99.90th=[ 5873], 99.95th=[ 5873], | 99.99th=[ 5873] bw ( KiB/s): min= 7474, max= 8126, per=100.00%, avg=7800.00, stdev=461.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.19%, ctx=678, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143572: Thu Aug 6 12:35:19 2026 read: IOPS=0, BW=452KiB/s (462kB/s)(4096KiB/9070msec) clat (nsec): min=5703.7M, max=5703.7M, avg=5703664309.00, stdev= 0.00 lat (nsec): min=5703.7M, max=5703.7M, avg=5703667640.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 5671], 5.00th=[ 5671], 10.00th=[ 5671], 20.00th=[ 5671], | 30.00th=[ 5671], 40.00th=[ 5671], 50.00th=[ 5671], 60.00th=[ 5671], | 70.00th=[ 5671], 80.00th=[ 5671], 90.00th=[ 5671], 95.00th=[ 5671], | 99.00th=[ 5671], 99.50th=[ 5671], 99.90th=[ 5671], 99.95th=[ 5671], | 99.99th=[ 5671] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=903KiB/s (925kB/s)(8192KiB/9070msec); 0 zone resets clat (msec): min=1165, max=2088, avg=1626.92, stdev=653.01 lat (msec): min=1165, max=2088, avg=1627.21, stdev=653.04 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 2089], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.01%, sys=1.52%, ctx=69, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143573: Thu Aug 6 12:35:19 2026 write: IOPS=0, BW=1386KiB/s (1419kB/s)(12.0MiB/8865msec); 0 zone resets clat (msec): min=905, max=5830, avg=2881.28, stdev=2602.89 lat (msec): min=906, max=5832, avg=2882.09, stdev=2603.77 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 1905], 50.00th=[ 1905], 60.00th=[ 1905], | 70.00th=[ 5805], 80.00th=[ 5805], 90.00th=[ 5805], 95.00th=[ 5805], | 99.00th=[ 5805], 99.50th=[ 5805], 99.90th=[ 5805], 99.95th=[ 5805], | 99.99th=[ 5805] bw ( KiB/s): min= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=1.99%, ctx=80, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143574: Thu Aug 6 12:35:19 2026 write: IOPS=0, BW=1600KiB/s (1639kB/s)(12.0MiB/7678msec); 0 zone resets clat (msec): min=836, max=5746, avg=2521.65, stdev=2794.18 lat (msec): min=841, max=5747, avg=2523.96, stdev=2792.26 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 5738], 80.00th=[ 5738], 90.00th=[ 5738], 95.00th=[ 5738], | 99.00th=[ 5738], 99.50th=[ 5738], 99.90th=[ 5738], 99.95th=[ 5738], | 99.99th=[ 5738] bw ( KiB/s): min= 7968, max= 8126, per=100.00%, avg=8047.00, stdev=111.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.01%, sys=1.35%, ctx=53, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1806KiB/s (1850kB/s), 452KiB/s-1443KiB/s (462kB/s-1478kB/s), io=16.0MiB (16.8MB), run=8516-9070msec WRITE: bw=3613KiB/s (3699kB/s), 903KiB/s-1600KiB/s (925kB/s-1639kB/s), io=32.0MiB (33.6MB), run=7678-9070msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143575: Thu Aug 6 12:35:20 2026 read: IOPS=0, BW=1425KiB/s (1459kB/s)(12.0MiB/8626msec) clat (msec): min=428, max=5975, avg=2857.18, stdev=2837.30 lat (msec): min=428, max=5976, avg=2857.18, stdev=2837.30 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 2165], 50.00th=[ 2165], 60.00th=[ 2165], | 70.00th=[ 6007], 80.00th=[ 6007], 90.00th=[ 6007], 95.00th=[ 6007], | 99.00th=[ 6007], 99.50th=[ 6007], 99.90th=[ 6007], 99.95th=[ 6007], | 99.99th=[ 6007] bw ( KiB/s): min= 7907, max= 8143, per=100.00%, avg=8025.00, stdev=166.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.10%, ctx=45, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143576: Thu Aug 6 12:35:20 2026 read: IOPS=0, BW=415KiB/s (425kB/s)(4096KiB/9876msec) clat (nsec): min=6150.2M, max=6150.2M, avg=6150156158.00, stdev= 0.00 lat (nsec): min=6150.2M, max=6150.2M, avg=6150158508.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 6141], 5.00th=[ 6141], 10.00th=[ 6141], 20.00th=[ 6141], | 30.00th=[ 6141], 40.00th=[ 6141], 50.00th=[ 6141], 60.00th=[ 6141], | 70.00th=[ 6141], 80.00th=[ 6141], 90.00th=[ 6141], 95.00th=[ 6141], | 99.00th=[ 6141], 99.50th=[ 6141], 99.90th=[ 6141], 99.95th=[ 6141], | 99.99th=[ 6141] bw ( KiB/s): min= 7922, max= 7922, per=100.00%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=829KiB/s (849kB/s)(8192KiB/9876msec); 0 zone resets clat (msec): min=1022, max=2530, avg=1776.72, stdev=1066.10 lat (msec): min=1025, max=2530, avg=1778.38, stdev=1064.12 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 2534], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.08%, sys=1.04%, ctx=47, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143577: Thu Aug 6 12:35:20 2026 write: IOPS=0, BW=1264KiB/s (1294kB/s)(12.0MiB/9721msec); 0 zone resets clat (msec): min=454, max=6732, avg=3183.36, stdev=3218.43 lat (msec): min=454, max=6732, avg=3183.64, stdev=3218.43 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 2366], 50.00th=[ 2366], 60.00th=[ 2366], | 70.00th=[ 6745], 80.00th=[ 6745], 90.00th=[ 6745], 95.00th=[ 6745], | 99.00th=[ 6745], 99.50th=[ 6745], 99.90th=[ 6745], 99.95th=[ 6745], | 99.99th=[ 6745] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=0.94%, ctx=58, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143578: Thu Aug 6 12:35:20 2026 write: IOPS=0, BW=1374KiB/s (1407kB/s)(12.0MiB/8944msec); 0 zone resets clat (msec): min=352, max=6091, avg=2924.87, stdev=2915.48 lat (msec): min=353, max=6097, avg=2926.90, stdev=2918.32 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 2333], 50.00th=[ 2333], 60.00th=[ 2333], | 70.00th=[ 6074], 80.00th=[ 6074], 90.00th=[ 6074], 95.00th=[ 6074], | 99.00th=[ 6074], 99.50th=[ 6074], 99.90th=[ 6074], 99.95th=[ 6074], | 99.99th=[ 6074] bw ( KiB/s): min= 7922, max= 8159, per=100.00%, avg=8040.50, stdev=167.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=0.96%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1659KiB/s (1699kB/s), 415KiB/s-1425KiB/s (425kB/s-1459kB/s), io=16.0MiB (16.8MB), run=8626-9876msec WRITE: bw=3318KiB/s (3398kB/s), 829KiB/s-1374KiB/s (849kB/s-1407kB/s), io=32.0MiB (33.6MB), run=8944-9876msec