== sanity test 398b: DIO and buffer IO race ============== 04:56:37 (1787388997) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.17171 s, 8.2 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=144879: Sat Aug 22 04:59:20 2026 read: IOPS=10, BW=43.4KiB/s (44.4kB/s)(5992KiB/138073msec) clat (usec): min=35, max=357984, avg=45842.03, stdev=32974.99 lat (usec): min=35, max=357985, avg=45845.72, stdev=32973.74 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 11994], 20.00th=[ 22152], | 30.00th=[ 28181], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 47449], | 70.00th=[ 56886], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[152044], 99.50th=[175113], 99.90th=[291505], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 101, per=25.51%, avg=43.36, stdev=18.29, samples=269 iops : min= 1, max= 25, avg=10.19, stdev= 4.61, samples=269 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(6296KiB/138073msec); 0 zone resets clat (usec): min=1168, max=1099.0k, avg=43841.42, stdev=52763.03 lat (usec): min=1170, max=1099.0k, avg=43843.37, stdev=52762.88 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 2073], | 20.00th=[ 5342], 30.00th=[ 10028], 40.00th=[ 19792], | 50.00th=[ 31327], 60.00th=[ 43779], 70.00th=[ 55837], | 80.00th=[ 72877], 90.00th=[ 99091], 95.00th=[ 132645], | 99.00th=[ 196084], 99.50th=[ 231736], 99.90th=[ 446694], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 103, per=25.53%, avg=45.44, stdev=19.70, samples=270 iops : min= 1, max= 25, avg=10.70, stdev= 4.97, samples=270 lat (usec) : 50=0.52%, 100=3.39%, 250=0.23%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.05%, 4=3.78%, 10=6.80%, 20=8.53%, 50=36.23% lat (msec) : 100=27.57%, 250=7.45%, 500=0.26%, 2000=0.03% cpu : usr=0.07%, sys=5.00%, ctx=6575, 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=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=144880: Sat Aug 22 04:59:20 2026 read: IOPS=10, BW=42.2KiB/s (43.2kB/s)(5940KiB/140891msec) clat (usec): min=33, max=1070.1k, avg=45901.70, stdev=42804.94 lat (usec): min=33, max=1070.1k, avg=45905.17, stdev=42805.28 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 11469], | 20.00th=[ 21103], 30.00th=[ 26346], 40.00th=[ 32113], | 50.00th=[ 39060], 60.00th=[ 46400], 70.00th=[ 54789], | 80.00th=[ 65799], 90.00th=[ 86508], 95.00th=[ 103285], | 99.00th=[ 156238], 99.50th=[ 196084], 99.90th=[ 387974], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 7, max= 87, per=24.92%, avg=42.37, stdev=18.78, samples=271 iops : min= 1, max= 21, avg= 9.93, stdev= 4.73, samples=271 write: IOPS=11, BW=45.1KiB/s (46.1kB/s)(6348KiB/140891msec); 0 zone resets clat (usec): min=950, max=438323, avg=45476.21, stdev=46443.74 lat (usec): min=952, max=438325, avg=45479.08, stdev=46442.86 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 1975], 20.00th=[ 5080], | 30.00th=[ 10683], 40.00th=[ 23200], 50.00th=[ 34866], 60.00th=[ 46924], | 70.00th=[ 59507], 80.00th=[ 76022], 90.00th=[102237], 95.00th=[129500], | 99.00th=[206570], 99.50th=[256902], 99.90th=[387974], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 7, max= 135, per=25.14%, avg=44.74, stdev=19.35, samples=273 iops : min= 1, max= 33, avg=10.53, stdev= 4.85, samples=273 lat (usec) : 50=0.39%, 100=3.42%, 250=0.33%, 750=0.03%, 1000=0.07% lat (msec) : 2=5.34%, 4=3.35%, 10=6.90%, 20=7.94%, 50=35.35% lat (msec) : 100=28.74%, 250=7.71%, 500=0.39%, 2000=0.03% cpu : usr=0.07%, sys=4.90%, ctx=6617, 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=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=144881: Sat Aug 22 04:59:20 2026 read: IOPS=10, BW=43.0KiB/s (44.1kB/s)(6028KiB/140054msec) clat (usec): min=35, max=423225, avg=46202.08, stdev=34764.79 lat (usec): min=36, max=423226, avg=46211.91, stdev=34761.75 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 14746], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[105382], | 99.00th=[168821], 99.50th=[196084], 99.90th=[413139], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 7, max= 103, per=25.35%, avg=43.10, stdev=18.35, samples=272 iops : min= 1, max= 25, avg=10.11, stdev= 4.61, samples=272 write: IOPS=11, BW=44.7KiB/s (45.8kB/s)(6260KiB/140054msec); 0 zone resets clat (usec): min=1009, max=1151.1k, avg=44641.23, stdev=52298.42 lat (usec): min=1011, max=1151.1k, avg=44644.82, stdev=52299.02 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 2008], | 20.00th=[ 5211], 30.00th=[ 10421], 40.00th=[ 20055], | 50.00th=[ 32113], 60.00th=[ 44303], 70.00th=[ 58459], | 80.00th=[ 77071], 90.00th=[ 102237], 95.00th=[ 126354], | 99.00th=[ 187696], 99.50th=[ 233833], 99.90th=[ 325059], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 151, per=25.15%, avg=44.76, stdev=20.56, samples=272 iops : min= 1, max= 37, avg=10.54, stdev= 5.18, samples=272 lat (usec) : 50=0.39%, 100=3.22%, 250=0.16%, 500=0.03%, 750=0.03% lat (msec) : 2=5.18%, 4=3.42%, 10=6.48%, 20=9.34%, 50=35.90% lat (msec) : 100=27.47%, 250=8.14%, 500=0.20%, 2000=0.03% cpu : usr=0.08%, sys=5.00%, ctx=6613, 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=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=144882: Sat Aug 22 04:59:20 2026 read: IOPS=10, BW=43.5KiB/s (44.5kB/s)(6052KiB/139284msec) clat (usec): min=30, max=546106, avg=45041.42, stdev=35202.32 lat (usec): min=31, max=546107, avg=45045.38, stdev=35201.14 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 9241], 20.00th=[ 21365], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 45876], | 70.00th=[ 55313], 80.00th=[ 66323], 90.00th=[ 85459], 95.00th=[101188], | 99.00th=[154141], 99.50th=[217056], 99.90th=[278922], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 7, max= 127, per=25.96%, avg=44.13, stdev=18.82, samples=267 iops : min= 1, max= 31, avg=10.37, stdev= 4.74, samples=267 write: IOPS=11, BW=44.8KiB/s (45.8kB/s)(6236KiB/139284msec); 0 zone resets clat (usec): min=1112, max=1137.6k, avg=45301.07, stdev=53949.17 lat (usec): min=1114, max=1137.7k, avg=45303.41, stdev=53949.60 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1418], 10.00th=[ 2212], | 20.00th=[ 5800], 30.00th=[ 11469], 40.00th=[ 21890], | 50.00th=[ 33817], 60.00th=[ 44827], 70.00th=[ 57410], | 80.00th=[ 73925], 90.00th=[ 104334], 95.00th=[ 132645], | 99.00th=[ 210764], 99.50th=[ 261096], 99.90th=[ 392168], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 119, per=25.17%, avg=44.81, stdev=19.71, samples=270 iops : min= 1, max= 29, avg=10.55, stdev= 4.96, samples=270 lat (usec) : 50=0.55%, 100=3.87%, 250=0.16%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.75%, 4=3.68%, 10=6.15%, 20=8.69%, 50=36.78% lat (msec) : 100=26.89%, 250=7.85%, 500=0.36%, 750=0.03%, 2000=0.03% cpu : usr=0.08%, sys=4.92%, ctx=6585, majf=0, minf=17 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=170KiB/s (175kB/s), 42.2KiB/s-43.5KiB/s (43.2kB/s-44.5kB/s), io=23.4MiB (24.6MB), run=138073-140891msec WRITE: bw=178KiB/s (183kB/s), 44.7KiB/s-45.6KiB/s (45.8kB/s-46.7kB/s), io=24.6MiB (25.7MB), run=138073-140891msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144874: Sat Aug 22 05:01:47 2026 read: IOPS=5, BW=20.8KiB/s (21.3kB/s)(5992KiB/288017msec) clat (msec): min=6, max=1324, avg=37.63, stdev=53.30 lat (msec): min=6, max=1324, avg=37.63, stdev=53.31 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 49], 90.00th=[ 79], 95.00th=[ 113], | 99.00th=[ 218], 99.50th=[ 300], 99.90th=[ 567], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 88, per=28.83%, avg=23.93, stdev=16.04, samples=482 iops : min= 1, max= 22, avg= 5.37, stdev= 4.04, samples=482 write: IOPS=5, BW=21.9KiB/s (22.4kB/s)(6296KiB/288017msec); 0 zone resets clat (msec): min=36, max=506, avg=146.89, stdev=68.14 lat (msec): min=36, max=506, avg=146.90, stdev=68.14 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 92], | 30.00th=[ 106], 40.00th=[ 118], 50.00th=[ 131], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 197], 90.00th=[ 243], 95.00th=[ 284], | 99.00th=[ 368], 99.50th=[ 435], 99.90th=[ 472], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 48, per=24.89%, avg=21.66, stdev= 9.76, samples=557 iops : min= 1, max= 12, avg= 4.79, stdev= 2.52, samples=557 lat (msec) : 10=2.99%, 20=17.06%, 50=19.63%, 100=19.47%, 250=36.07% lat (msec) : 500=4.69%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.22%, ctx=5220, 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=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=144876: Sat Aug 22 05:01:47 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(5940KiB/287354msec) clat (msec): min=5, max=1171, avg=37.08, stdev=48.90 lat (msec): min=5, max=1171, avg=37.08, stdev=48.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 50], 90.00th=[ 75], 95.00th=[ 109], | 99.00th=[ 201], 99.50th=[ 247], 99.90th=[ 584], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 104, per=29.05%, avg=24.11, stdev=16.19, samples=475 iops : min= 1, max= 26, avg= 5.41, stdev= 4.08, samples=475 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6348KiB/287354msec); 0 zone resets clat (msec): min=42, max=583, avg=146.08, stdev=66.44 lat (msec): min=42, max=583, avg=146.09, stdev=66.45 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 93], | 30.00th=[ 106], 40.00th=[ 117], 50.00th=[ 130], 60.00th=[ 144], | 70.00th=[ 165], 80.00th=[ 190], 90.00th=[ 234], 95.00th=[ 279], | 99.00th=[ 359], 99.50th=[ 405], 99.90th=[ 542], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 48, per=25.30%, avg=22.01, stdev= 9.40, samples=554 iops : min= 1, max= 12, avg= 4.88, stdev= 2.43, samples=554 lat (msec) : 10=3.16%, 20=16.73%, 50=19.01%, 100=19.53%, 250=37.47% lat (msec) : 500=3.94%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.24%, ctx=5115, 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=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=144877: Sat Aug 22 05:01:47 2026 read: IOPS=5, BW=21.0KiB/s (21.5kB/s)(6028KiB/286549msec) clat (msec): min=5, max=465, avg=36.81, stdev=36.46 lat (msec): min=5, max=465, avg=36.81, stdev=36.46 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 52], 90.00th=[ 81], 95.00th=[ 109], | 99.00th=[ 176], 99.50th=[ 205], 99.90th=[ 317], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 7, max= 103, per=28.53%, avg=23.68, stdev=16.40, samples=491 iops : min= 1, max= 25, avg= 5.29, stdev= 4.14, samples=491 write: IOPS=5, BW=21.8KiB/s (22.4kB/s)(6260KiB/286549msec); 0 zone resets clat (msec): min=29, max=1281, avg=147.35, stdev=74.46 lat (msec): min=29, max=1281, avg=147.35, stdev=74.46 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 107], 40.00th=[ 120], 50.00th=[ 131], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 190], 90.00th=[ 239], 95.00th=[ 279], | 99.00th=[ 388], 99.50th=[ 426], 99.90th=[ 617], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 56, per=24.79%, avg=21.57, stdev= 9.93, samples=558 iops : min= 1, max= 14, avg= 4.76, stdev= 2.57, samples=558 lat (msec) : 10=3.16%, 20=15.89%, 50=20.05%, 100=20.54%, 250=35.81% lat (msec) : 500=4.43%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.18%, ctx=5183, 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=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=144878: Sat Aug 22 05:01:47 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6052KiB/285925msec) clat (msec): min=5, max=529, avg=36.31, stdev=37.94 lat (msec): min=5, max=529, avg=36.31, stdev=37.94 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 79], 95.00th=[ 110], | 99.00th=[ 178], 99.50th=[ 209], 99.90th=[ 384], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 7, max= 96, per=28.93%, avg=24.01, stdev=16.63, samples=486 iops : min= 1, max= 24, avg= 5.38, stdev= 4.20, samples=486 write: IOPS=5, BW=21.8KiB/s (22.3kB/s)(6236KiB/285925msec); 0 zone resets clat (msec): min=30, max=1280, avg=147.89, stdev=74.66 lat (msec): min=30, max=1280, avg=147.90, stdev=74.66 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 78], 20.00th=[ 93], | 30.00th=[ 105], 40.00th=[ 118], 50.00th=[ 132], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 192], 90.00th=[ 243], 95.00th=[ 284], | 99.00th=[ 380], 99.50th=[ 439], 99.90th=[ 558], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 56, per=24.78%, avg=21.56, stdev= 9.90, samples=555 iops : min= 1, max= 14, avg= 4.76, stdev= 2.55, samples=555 lat (msec) : 10=3.39%, 20=16.34%, 50=20.28%, 100=19.04%, 250=36.59% lat (msec) : 500=4.20%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.24%, ctx=5153, 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=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=83.4KiB/s (85.4kB/s), 20.7KiB/s-21.2KiB/s (21.2kB/s-21.7kB/s), io=23.4MiB (24.6MB), run=285925-288017msec WRITE: bw=87.3KiB/s (89.4kB/s), 21.8KiB/s-22.1KiB/s (22.3kB/s-22.6kB/s), io=24.6MiB (25.7MB), run=285925-288017msec 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=144952: Sat Aug 22 05:02:34 2026 read: IOPS=11, BW=187KiB/s (192kB/s)(5920KiB/31603msec) clat (usec): min=33, max=194295, avg=43431.46, stdev=36967.35 lat (usec): min=33, max=194296, avg=43433.09, stdev=36967.08 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 116], | 30.00th=[ 23462], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[114820], | 99.00th=[170918], 99.50th=[187696], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 62, max= 415, per=27.87%, avg=187.84, stdev=77.62, samples=62 iops : min= 3, max= 25, avg=10.98, stdev= 4.93, samples=62 write: IOPS=12, BW=201KiB/s (206kB/s)(6368KiB/31603msec); 0 zone resets clat (usec): min=1555, max=254957, avg=38496.34, stdev=41524.03 lat (usec): min=1556, max=254960, avg=38502.26, stdev=41525.53 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2147], 10.00th=[ 3523], 20.00th=[ 6980], | 30.00th=[ 10028], 40.00th=[ 15795], 50.00th=[ 23462], 60.00th=[ 34866], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 89654], 95.00th=[122160], | 99.00th=[214959], 99.50th=[250610], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 31, max= 412, per=28.42%, avg=201.52, stdev=85.87, samples=62 iops : min= 1, max= 25, avg=11.85, stdev= 5.40, samples=62 lat (usec) : 50=1.43%, 100=7.81%, 250=0.78%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=1.95%, 4=4.17%, 10=9.90%, 20=10.03%, 50=30.47% lat (msec) : 100=25.13%, 250=7.55%, 500=0.26% cpu : usr=0.08%, sys=5.57%, ctx=1493, 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=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=144953: Sat Aug 22 05:02:34 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(5744KiB/35525msec) clat (usec): min=40, max=347759, avg=48610.59, stdev=41383.50 lat (usec): min=40, max=347761, avg=48625.26, stdev=41368.91 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 16712], | 30.00th=[ 27919], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 51119], | 70.00th=[ 62653], 80.00th=[ 73925], 90.00th=[ 96994], 95.00th=[121111], | 99.00th=[179307], 99.50th=[233833], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 23, max= 352, per=24.26%, avg=163.54, stdev=75.41, samples=68 iops : min= 1, max= 22, avg= 9.49, stdev= 4.78, samples=68 write: IOPS=11, BW=184KiB/s (189kB/s)(6544KiB/35525msec); 0 zone resets clat (usec): min=1544, max=277662, avg=43836.85, stdev=46405.64 lat (usec): min=1545, max=277667, avg=43908.95, stdev=46374.14 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2376], 10.00th=[ 4490], 20.00th=[ 9110], | 30.00th=[ 13304], 40.00th=[ 19530], 50.00th=[ 27395], 60.00th=[ 37487], | 70.00th=[ 51643], 80.00th=[ 72877], 90.00th=[108528], 95.00th=[133694], | 99.00th=[221250], 99.50th=[235930], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 373, per=26.32%, avg=186.57, stdev=81.13, samples=68 iops : min= 1, max= 23, avg=10.93, stdev= 5.15, samples=68 lat (usec) : 50=0.65%, 100=6.64%, 250=0.91%, 750=0.13%, 1000=0.39% lat (msec) : 2=1.56%, 4=3.12%, 10=6.90%, 20=11.07%, 50=32.81% lat (msec) : 100=25.65%, 250=9.77%, 500=0.39% cpu : usr=0.06%, sys=5.23%, ctx=1568, 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=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=144954: Sat Aug 22 05:02:34 2026 read: IOPS=11, BW=191KiB/s (195kB/s)(6256KiB/32810msec) clat (usec): min=38, max=337314, avg=45113.88, stdev=38570.40 lat (usec): min=38, max=337315, avg=45118.04, stdev=38567.95 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 16581], | 30.00th=[ 27919], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 47449], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[173016], 99.50th=[291505], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 31, max= 414, per=28.50%, avg=192.09, stdev=89.11, samples=64 iops : min= 1, max= 25, avg=11.27, stdev= 5.65, samples=64 write: IOPS=11, BW=184KiB/s (188kB/s)(6032KiB/32810msec); 0 zone resets clat (usec): min=1514, max=366727, avg=39302.19, stdev=45876.30 lat (usec): min=1515, max=366729, avg=39306.19, stdev=45875.71 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1942], 10.00th=[ 2343], 20.00th=[ 5473], | 30.00th=[ 9765], 40.00th=[ 13173], 50.00th=[ 20579], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[ 99091], 95.00th=[127402], | 99.00th=[185598], 99.50th=[337642], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 30, max= 382, per=26.19%, avg=185.70, stdev=86.72, samples=63 iops : min= 1, max= 23, avg=10.86, stdev= 5.42, samples=63 lat (usec) : 50=1.04%, 100=6.64%, 250=0.91%, 750=0.13% lat (msec) : 2=3.52%, 4=3.65%, 10=8.59%, 20=10.94%, 50=31.77% lat (msec) : 100=25.52%, 250=6.77%, 500=0.52% cpu : usr=0.05%, sys=5.61%, ctx=1559, 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=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=144955: Sat Aug 22 05:02:34 2026 read: IOPS=11, BW=178KiB/s (183kB/s)(6032KiB/33818msec) clat (usec): min=45, max=429565, avg=49301.95, stdev=48840.05 lat (usec): min=46, max=429566, avg=49303.45, stdev=48839.93 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 8717], | 30.00th=[ 29230], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 48497], | 70.00th=[ 57934], 80.00th=[ 72877], 90.00th=[ 92799], 95.00th=[124257], | 99.00th=[238027], 99.50th=[421528], 99.90th=[429917], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 31, max= 352, per=26.74%, avg=180.22, stdev=78.09, samples=65 iops : min= 1, max= 22, avg=10.52, stdev= 4.98, samples=65 write: IOPS=11, BW=185KiB/s (189kB/s)(6256KiB/33818msec); 0 zone resets clat (usec): min=1548, max=319247, avg=38323.52, stdev=42205.09 lat (usec): min=1548, max=319250, avg=38349.82, stdev=42188.25 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2024], 10.00th=[ 3032], 20.00th=[ 6849], | 30.00th=[ 10159], 40.00th=[ 14615], 50.00th=[ 22414], 60.00th=[ 33817], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[ 87557], 95.00th=[112722], | 99.00th=[185598], 99.50th=[240124], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 31, max= 380, per=26.56%, avg=188.29, stdev=80.03, samples=65 iops : min= 1, max= 23, avg=11.03, stdev= 5.07, samples=65 lat (usec) : 50=0.39%, 100=7.42%, 250=0.78%, 750=0.26%, 1000=0.26% lat (msec) : 2=2.60%, 4=4.56%, 10=8.72%, 20=9.90%, 50=31.90% lat (msec) : 100=25.39%, 250=7.29%, 500=0.52% cpu : usr=0.09%, sys=5.49%, ctx=1532, 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=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=674KiB/s (690kB/s), 162KiB/s-191KiB/s (166kB/s-195kB/s), io=23.4MiB (24.5MB), run=31603-35525msec WRITE: bw=709KiB/s (726kB/s), 184KiB/s-201KiB/s (188kB/s-206kB/s), io=24.6MiB (25.8MB), run=31603-35525msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144947: Sat Aug 22 05:03:17 2026 read: IOPS=4, BW=74.8KiB/s (76.6kB/s)(5920KiB/79107msec) clat (msec): min=7, max=374, avg=45.25, stdev=40.80 lat (msec): min=7, max=374, avg=45.25, stdev=40.80 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 131], | 99.00th=[ 203], 99.50th=[ 275], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 318, per=28.92%, avg=87.34, stdev=51.87, samples=133 iops : min= 1, max= 19, avg= 4.65, stdev= 3.30, samples=133 write: IOPS=5, BW=80.5KiB/s (82.4kB/s)(6368KiB/79107msec); 0 zone resets clat (msec): min=60, max=709, avg=156.06, stdev=78.57 lat (msec): min=60, max=709, avg=156.07, stdev=78.57 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 74], 10.00th=[ 87], 20.00th=[ 97], | 30.00th=[ 110], 40.00th=[ 124], 50.00th=[ 136], 60.00th=[ 150], | 70.00th=[ 169], 80.00th=[ 199], 90.00th=[ 262], 95.00th=[ 313], | 99.00th=[ 409], 99.50th=[ 489], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 30, max= 160, per=25.63%, avg=81.50, stdev=35.91, samples=153 iops : min= 1, max= 10, avg= 4.27, stdev= 2.32, samples=153 lat (msec) : 10=1.17%, 20=7.94%, 50=26.04%, 100=20.83%, 250=37.89% lat (msec) : 500=5.99%, 750=0.13% cpu : usr=0.04%, sys=1.42%, ctx=1426, 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=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=144948: Sat Aug 22 05:03:17 2026 read: IOPS=4, BW=72.5KiB/s (74.2kB/s)(5744KiB/79240msec) clat (msec): min=8, max=288, avg=44.59, stdev=38.89 lat (msec): min=8, max=288, avg=44.59, stdev=38.89 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 58], 90.00th=[ 86], 95.00th=[ 123], | 99.00th=[ 205], 99.50th=[ 249], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 319, per=29.01%, avg=87.60, stdev=56.64, samples=128 iops : min= 1, max= 19, avg= 4.68, stdev= 3.58, samples=128 write: IOPS=5, BW=82.6KiB/s (84.6kB/s)(6544KiB/79240msec); 0 zone resets clat (msec): min=45, max=499, avg=154.25, stdev=76.10 lat (msec): min=45, max=499, avg=154.26, stdev=76.11 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 100], | 30.00th=[ 112], 40.00th=[ 124], 50.00th=[ 138], 60.00th=[ 148], | 70.00th=[ 169], 80.00th=[ 192], 90.00th=[ 241], 95.00th=[ 334], | 99.00th=[ 443], 99.50th=[ 468], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 31, max= 159, per=26.20%, avg=83.31, stdev=35.12, samples=153 iops : min= 1, max= 9, avg= 4.39, stdev= 2.27, samples=153 lat (msec) : 10=0.52%, 20=8.85%, 50=24.74%, 100=20.18%, 250=41.02% lat (msec) : 500=4.69% cpu : usr=0.04%, sys=1.33%, ctx=1375, majf=0, minf=11 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=144949: Sat Aug 22 05:03:17 2026 read: IOPS=5, BW=81.3KiB/s (83.2kB/s)(6256KiB/76966msec) clat (msec): min=7, max=462, avg=47.48, stdev=47.99 lat (msec): min=7, max=462, avg=47.48, stdev=47.99 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 144], | 99.00th=[ 241], 99.50th=[ 393], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 30, max= 284, per=30.55%, avg=92.25, stdev=59.72, samples=134 iops : min= 1, max= 17, avg= 4.95, stdev= 3.76, samples=134 write: IOPS=4, BW=78.4KiB/s (80.3kB/s)(6032KiB/76966msec); 0 zone resets clat (msec): min=49, max=565, avg=154.27, stdev=76.84 lat (msec): min=49, max=565, avg=154.27, stdev=76.84 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 71], 10.00th=[ 82], 20.00th=[ 95], | 30.00th=[ 110], 40.00th=[ 122], 50.00th=[ 133], 60.00th=[ 150], | 70.00th=[ 174], 80.00th=[ 205], 90.00th=[ 251], 95.00th=[ 305], | 99.00th=[ 435], 99.50th=[ 510], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 31, max= 191, per=25.07%, avg=79.71, stdev=33.88, samples=148 iops : min= 1, max= 11, avg= 4.16, stdev= 2.17, samples=148 lat (msec) : 10=0.39%, 20=9.51%, 50=27.73%, 100=19.27%, 250=38.02% lat (msec) : 500=4.82%, 750=0.26% cpu : usr=0.04%, sys=1.46%, ctx=1439, majf=0, minf=11 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=144950: Sat Aug 22 05:03:17 2026 read: IOPS=4, BW=76.3KiB/s (78.1kB/s)(6032KiB/79069msec) clat (msec): min=6, max=351, avg=45.44, stdev=43.13 lat (msec): min=6, max=351, avg=45.45, stdev=43.13 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 59], 90.00th=[ 85], 95.00th=[ 133], | 99.00th=[ 249], 99.50th=[ 259], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 255, per=29.15%, avg=88.02, stdev=55.73, samples=134 iops : min= 1, max= 15, avg= 4.69, stdev= 3.57, samples=134 write: IOPS=4, BW=79.1KiB/s (81.0kB/s)(6256KiB/79069msec); 0 zone resets clat (msec): min=50, max=556, avg=158.14, stdev=77.90 lat (msec): min=50, max=556, avg=158.15, stdev=77.90 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 74], 10.00th=[ 86], 20.00th=[ 104], | 30.00th=[ 115], 40.00th=[ 128], 50.00th=[ 138], 60.00th=[ 155], | 70.00th=[ 174], 80.00th=[ 197], 90.00th=[ 259], 95.00th=[ 305], | 99.00th=[ 489], 99.50th=[ 542], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 30, max= 159, per=25.06%, avg=79.70, stdev=35.30, samples=154 iops : min= 1, max= 9, avg= 4.16, stdev= 2.28, samples=154 lat (msec) : 10=0.52%, 20=8.85%, 50=26.82%, 100=18.49%, 250=39.32% lat (msec) : 500=5.60%, 750=0.39% cpu : usr=0.04%, sys=1.41%, ctx=1431, 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=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=302KiB/s (310kB/s), 72.5KiB/s-81.3KiB/s (74.2kB/s-83.2kB/s), io=23.4MiB (24.5MB), run=76966-79240msec WRITE: bw=318KiB/s (326kB/s), 78.4KiB/s-82.6KiB/s (80.3kB/s-84.6kB/s), io=24.6MiB (25.8MB), run=76966-79240msec 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=144978: Sat Aug 22 05:03:33 2026 read: IOPS=1, BW=1963KiB/s (2010kB/s)(7168KiB/3651msec) clat (usec): min=732, max=424946, avg=221713.81, stdev=126328.22 lat (usec): min=733, max=424948, avg=221715.61, stdev=126328.12 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[198181], | 30.00th=[198181], 40.00th=[198181], 50.00th=[200279], 60.00th=[252707], | 70.00th=[252707], 80.00th=[278922], 90.00th=[425722], 95.00th=[425722], | 99.00th=[425722], 99.50th=[425722], 99.90th=[425722], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 1976, max= 5941, per=69.07%, avg=2990.75, stdev=1967.03, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1402KiB/s (1436kB/s)(5120KiB/3651msec); 0 zone resets clat (msec): min=158, max=548, avg=342.13, stdev=151.16 lat (msec): min=158, max=548, avg=342.26, stdev=151.18 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1976, max= 2043, per=33.25%, avg=2016.25, stdev=32.80, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=11.97%, ctx=171, 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=144981: Sat Aug 22 05:03:33 2026 read: IOPS=0, BW=433KiB/s (443kB/s)(2048KiB/4729msec) clat (msec): min=428, max=568, avg=498.43, stdev=98.58 lat (msec): min=428, max=568, avg=498.44, stdev=98.57 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1980, max= 1988, per=45.82%, avg=1984.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2165KiB/s (2217kB/s)(10.0MiB/4729msec); 0 zone resets clat (msec): min=159, max=767, avg=327.61, stdev=190.84 lat (msec): min=159, max=767, avg=328.09, stdev=191.07 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 201], | 30.00th=[ 205], 40.00th=[ 211], 50.00th=[ 213], 60.00th=[ 218], | 70.00th=[ 422], 80.00th=[ 435], 90.00th=[ 451], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1976, max= 6119, per=49.96%, avg=3029.33, stdev=1711.23, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=10.41%, ctx=181, majf=0, minf=11 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=144983: Sat Aug 22 05:03:33 2026 read: IOPS=1, BW=1735KiB/s (1776kB/s)(6144KiB/3542msec) clat (usec): min=1275, max=326218, avg=84535.87, stdev=136229.19 lat (usec): min=1276, max=326228, avg=84538.56, stdev=136232.08 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1270], 10.00th=[ 1270], 20.00th=[ 2802], | 30.00th=[ 2802], 40.00th=[ 2933], 50.00th=[ 2933], 60.00th=[ 3032], | 70.00th=[170918], 80.00th=[170918], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 1976, max= 4087, per=78.14%, avg=3383.33, stdev=1218.79, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1735KiB/s (1776kB/s)(6144KiB/3542msec); 0 zone resets clat (msec): min=129, max=885, avg=429.57, stdev=296.63 lat (msec): min=129, max=885, avg=429.91, stdev=296.74 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 472], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1976, max= 2043, per=33.14%, avg=2009.00, stdev=32.70, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=8.33%, 4=25.00%, 250=25.00%, 500=25.00%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=7.60%, ctx=74, 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=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=144984: Sat Aug 22 05:03:33 2026 read: IOPS=1, BW=1302KiB/s (1334kB/s)(5120KiB/3931msec) clat (usec): min=842, max=440691, avg=205747.61, stdev=196296.73 lat (usec): min=844, max=440693, avg=205749.21, stdev=196296.77 clat percentiles (usec): | 1.00th=[ 840], 5.00th=[ 840], 10.00th=[ 840], 20.00th=[ 840], | 30.00th=[ 1663], 40.00th=[ 1663], 50.00th=[283116], 60.00th=[283116], | 70.00th=[299893], 80.00th=[299893], 90.00th=[442500], 95.00th=[442500], | 99.00th=[442500], 99.50th=[442500], 99.90th=[442500], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 3953, max= 3976, per=91.56%, avg=3964.50, stdev=16.26, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1823KiB/s (1867kB/s)(7168KiB/3931msec); 0 zone resets clat (msec): min=112, max=955, avg=400.91, stdev=341.90 lat (msec): min=112, max=955, avg=401.64, stdev=341.43 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 157], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 203], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 802], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1741, max= 4087, per=40.49%, avg=2454.75, stdev=1094.78, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=33.33%, 1000=16.67% cpu : usr=0.05%, sys=9.67%, ctx=126, 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=4331KiB/s (4435kB/s), 433KiB/s-1963KiB/s (443kB/s-2010kB/s), io=20.0MiB (20.0MB), run=3542-4729msec WRITE: bw=6063KiB/s (6209kB/s), 1402KiB/s-2165KiB/s (1436kB/s-2217kB/s), io=28.0MiB (29.4MB), run=3542-4729msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144977: Sat Aug 22 05:03:33 2026 read: IOPS=1, BW=1946KiB/s (1993kB/s)(7168KiB/3683msec) clat (msec): min=86, max=330, avg=169.82, stdev=82.79 lat (msec): min=86, max=330, avg=169.82, stdev=82.79 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 96], | 30.00th=[ 128], 40.00th=[ 128], 50.00th=[ 169], 60.00th=[ 186], | 70.00th=[ 186], 80.00th=[ 194], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1765, max= 4071, per=68.00%, avg=2966.75, stdev=1260.08, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1390KiB/s (1424kB/s)(5120KiB/3683msec); 0 zone resets clat (msec): min=126, max=1084, avg=427.20, stdev=378.44 lat (msec): min=126, max=1084, avg=427.34, stdev=378.46 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1992, max= 4047, per=43.97%, avg=2686.00, stdev=1178.74, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=25.00%, 2000=8.33% cpu : usr=0.05%, sys=3.56%, ctx=66, majf=0, minf=11 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=144979: Sat Aug 22 05:03:33 2026 read: IOPS=0, BW=436KiB/s (447kB/s)(2048KiB/4693msec) clat (msec): min=142, max=853, avg=497.73, stdev=502.79 lat (msec): min=142, max=853, avg=497.73, stdev=502.79 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1721, max= 1957, per=42.15%, avg=1839.00, stdev=166.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2182KiB/s (2234kB/s)(10.0MiB/4693msec); 0 zone resets clat (msec): min=160, max=565, avg=350.64, stdev=141.93 lat (msec): min=161, max=565, avg=350.99, stdev=141.89 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 190], | 30.00th=[ 230], 40.00th=[ 251], 50.00th=[ 326], 60.00th=[ 355], | 70.00th=[ 447], 80.00th=[ 485], 90.00th=[ 498], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1992, max= 4071, per=46.41%, avg=2835.20, stdev=1128.19, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=3.71%, ctx=72, 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=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=144980: Sat Aug 22 05:03:33 2026 read: IOPS=1, BW=1346KiB/s (1379kB/s)(6144KiB/4563msec) clat (msec): min=78, max=505, avg=254.57, stdev=187.44 lat (msec): min=78, max=505, avg=254.58, stdev=187.44 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 262], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1957, max= 4071, per=57.55%, avg=2510.75, stdev=1040.52, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1346KiB/s (1379kB/s)(6144KiB/4563msec); 0 zone resets clat (msec): min=178, max=1010, avg=483.85, stdev=332.31 lat (msec): min=178, max=1011, avg=484.28, stdev=332.50 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 558], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1732, max= 2035, per=31.47%, avg=1922.40, stdev=150.05, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=3.24%, ctx=68, majf=0, minf=11 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=144982: Sat Aug 22 05:03:33 2026 read: IOPS=1, BW=1330KiB/s (1362kB/s)(5120KiB/3850msec) clat (msec): min=83, max=242, avg=152.30, stdev=62.30 lat (msec): min=83, max=242, avg=152.30, stdev=62.30 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 140], 60.00th=[ 140], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 243], 95.00th=[ 243], | 99.00th=[ 243], 99.50th=[ 243], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 1992, max= 4047, per=61.56%, avg=2686.00, stdev=1178.74, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1862KiB/s (1907kB/s)(7168KiB/3850msec); 0 zone resets clat (msec): min=275, max=901, avg=432.87, stdev=223.40 lat (msec): min=277, max=901, avg=433.29, stdev=223.19 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 368], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 489], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1957, max= 3308, per=37.03%, avg=2262.20, stdev=585.37, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=50.00%, 1000=8.33% cpu : usr=0.05%, sys=3.40%, ctx=56, 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=4364KiB/s (4469kB/s), 436KiB/s-1946KiB/s (447kB/s-1993kB/s), io=20.0MiB (20.0MB), run=3683-4693msec WRITE: bw=6110KiB/s (6256kB/s), 1346KiB/s-2182KiB/s (1379kB/s-2234kB/s), io=28.0MiB (29.4MB), run=3683-4693msec 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=144991: Sat Aug 22 05:03:49 2026 read: IOPS=0, BW=3873KiB/s (3966kB/s)(12.0MiB/3173msec) clat (msec): min=879, max=1099, avg=995.97, stdev=110.69 lat (msec): min=879, max=1099, avg=995.97, stdev=110.69 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1099], 80.00th=[ 1099], 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= 8062, max= 8175, per=100.00%, avg=8118.50, stdev=79.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.53%, ctx=47, 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=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=144992: Sat Aug 22 05:03:49 2026 read: IOPS=0, BW=2086KiB/s (2136kB/s)(4096KiB/1964msec) clat (nsec): min=363202k, max=363202k, avg=363202116.00, stdev= 0.00 lat (nsec): min=363205k, max=363205k, avg=363204623.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4171KiB/s (4271kB/s)(8192KiB/1964msec); 0 zone resets clat (msec): min=618, max=842, avg=730.88, stdev=158.40 lat (msec): min=622, max=843, avg=732.68, stdev=156.18 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8062, max= 8062, per=96.38%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=6.88%, ctx=54, 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=144993: Sat Aug 22 05:03:49 2026 write: IOPS=0, BW=3137KiB/s (3212kB/s)(12.0MiB/3917msec); 0 zone resets clat (msec): min=360, max=1987, avg=1263.41, stdev=828.22 lat (msec): min=362, max=1988, avg=1264.53, stdev=827.51 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 1989], 80.00th=[ 1989], 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= 8078, max= 8143, per=96.96%, avg=8110.50, stdev=45.96, 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=3.17%, ctx=48, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=144994: Sat Aug 22 05:03:49 2026 write: IOPS=0, BW=3723KiB/s (3812kB/s)(12.0MiB/3301msec); 0 zone resets clat (msec): min=490, max=2159, avg=1051.34, stdev=959.92 lat (msec): min=490, max=2162, avg=1053.05, stdev=960.89 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8062, max= 8175, per=97.05%, avg=8118.50, stdev=79.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.18%, ctx=55, 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 Run status group 0 (all jobs): READ: bw=5164KiB/s (5287kB/s), 2086KiB/s-3873KiB/s (2136kB/s-3966kB/s), io=16.0MiB (16.8MB), run=1964-3173msec WRITE: bw=8366KiB/s (8566kB/s), 3137KiB/s-4171KiB/s (3212kB/s-4271kB/s), io=32.0MiB (33.6MB), run=1964-3917msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144996: Sat Aug 22 05:03:50 2026 read: IOPS=1, BW=4987KiB/s (5107kB/s)(12.0MiB/2464msec) clat (msec): min=675, max=1002, avg=820.72, stdev=166.18 lat (msec): min=675, max=1002, avg=820.72, stdev=166.18 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8110, max= 8143, per=100.00%, avg=8126.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.20%, sys=16.16%, ctx=427, 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=144997: Sat Aug 22 05:03:50 2026 read: IOPS=0, BW=1528KiB/s (1564kB/s)(4096KiB/2681msec) clat (nsec): min=562834k, max=562834k, avg=562833626.00, stdev= 0.00 lat (nsec): min=562835k, max=562835k, avg=562835461.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 5988, max= 5988, per=97.99%, avg=5988.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3056KiB/s (3129kB/s)(8192KiB/2681msec); 0 zone resets clat (msec): min=953, max=1162, avg=1057.77, stdev=147.97 lat (msec): min=953, max=1163, avg=1058.61, stdev=148.54 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8062, max= 8062, per=87.81%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.39%, ctx=104, 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=144998: Sat Aug 22 05:03:50 2026 write: IOPS=0, BW=3443KiB/s (3526kB/s)(12.0MiB/3569msec); 0 zone resets clat (msec): min=272, max=2226, avg=1187.32, stdev=982.66 lat (msec): min=274, max=2228, avg=1188.86, stdev=983.19 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8159, max= 8159, per=88.87%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=2.63%, ctx=34, 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=144999: Sat Aug 22 05:03:50 2026 write: IOPS=0, BW=3995KiB/s (4091kB/s)(12.0MiB/3076msec); 0 zone resets clat (msec): min=634, max=1237, avg=1020.81, stdev=335.57 lat (msec): min=638, max=1244, avg=1025.08, stdev=335.43 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8062, max= 8159, per=88.34%, avg=8110.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.71%, ctx=54, 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=6111KiB/s (6258kB/s), 1528KiB/s-4987KiB/s (1564kB/s-5107kB/s), io=16.0MiB (16.8MB), run=2464-2681msec WRITE: bw=9181KiB/s (9402kB/s), 3056KiB/s-3995KiB/s (3129kB/s-4091kB/s), io=32.0MiB (33.6MB), run=2681-3569msec