== sanity test 398b: DIO and buffer IO race ============== 15:44:24 (1786823064) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.8896 s, 10.3 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=145138: Sat Aug 15 15:46:52 2026 read: IOPS=11, BW=45.0KiB/s (47.1kB/s)(5992KiB/130380msec) clat (usec): min=31, max=729754, avg=43763.46, stdev=37912.38 lat (usec): min=31, max=729758, avg=43769.48, stdev=37910.74 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 13173], 20.00th=[ 21103], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[143655], 99.50th=[189793], 99.90th=[557843], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 119, per=25.14%, avg=46.00, stdev=20.57, samples=254 iops : min= 1, max= 29, avg=10.87, stdev= 5.17, samples=254 write: IOPS=12, BW=48.3KiB/s (49.4kB/s)(6296KiB/130380msec); 0 zone resets clat (usec): min=1123, max=373429, avg=41058.65, stdev=42760.19 lat (usec): min=1123, max=373430, avg=41070.48, stdev=42755.78 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1401], 10.00th=[ 2245], 20.00th=[ 5342], | 30.00th=[ 9634], 40.00th=[ 19006], 50.00th=[ 28443], 60.00th=[ 41157], | 70.00th=[ 53216], 80.00th=[ 69731], 90.00th=[ 98042], 95.00th=[123208], | 99.00th=[189793], 99.50th=[212861], 99.90th=[337642], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 118, per=24.98%, avg=47.96, stdev=21.84, samples=256 iops : min= 1, max= 29, avg=11.37, stdev= 5.50, samples=256 lat (usec) : 50=0.49%, 100=2.80%, 250=0.36%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.79%, 4=3.32%, 10=7.81%, 20=10.29%, 50=38.22% lat (msec) : 100=24.41%, 250=7.13%, 500=0.20%, 750=0.07% cpu : usr=0.09%, sys=5.38%, ctx=6783, 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=145139: Sat Aug 15 15:46:52 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(5940KiB/130021msec) clat (usec): min=27, max=762620, avg=42230.11, stdev=35079.19 lat (usec): min=27, max=762621, avg=42237.55, stdev=35081.37 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 11469], 20.00th=[ 19792], | 30.00th=[ 25822], 40.00th=[ 31065], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 61604], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[145753], 99.50th=[158335], 99.90th=[312476], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 110, per=25.13%, avg=45.99, stdev=19.85, samples=252 iops : min= 1, max= 27, avg=10.87, stdev= 5.02, samples=252 write: IOPS=12, BW=48.8KiB/s (49.0kB/s)(6348KiB/130021msec); 0 zone resets clat (usec): min=1137, max=440240, avg=42319.63, stdev=45533.59 lat (usec): min=1139, max=440241, avg=42327.89, stdev=45530.79 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1418], 10.00th=[ 2376], 20.00th=[ 4817], | 30.00th=[ 9241], 40.00th=[ 19006], 50.00th=[ 29754], 60.00th=[ 41681], | 70.00th=[ 55313], 80.00th=[ 71828], 90.00th=[100140], 95.00th=[127402], | 99.00th=[202376], 99.50th=[225444], 99.90th=[400557], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 7, max= 134, per=25.36%, avg=48.70, stdev=22.07, samples=254 iops : min= 1, max= 33, avg=11.54, stdev= 5.54, samples=254 lat (usec) : 50=0.52%, 100=3.09%, 250=0.29%, 500=0.26%, 750=0.07% lat (msec) : 2=4.56%, 4=4.56%, 10=7.32%, 20=10.42%, 50=37.30% lat (msec) : 100=24.54%, 250=6.84%, 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=5.26%, ctx=6637, 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=145140: Sat Aug 15 15:46:52 2026 read: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6028KiB/129438msec) clat (usec): min=34, max=494339, avg=42560.99, stdev=32944.32 lat (usec): min=34, max=494341, avg=42562.85, stdev=32944.24 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 11469], 20.00th=[ 20055], | 30.00th=[ 25297], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 50594], 80.00th=[ 62653], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[152044], 99.50th=[183501], 99.90th=[244319], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 7, max= 110, per=25.35%, avg=46.40, stdev=19.91, samples=253 iops : min= 1, max= 27, avg=10.95, stdev= 4.99, samples=253 write: IOPS=12, BW=48.4KiB/s (49.5kB/s)(6260KiB/129438msec); 0 zone resets clat (usec): min=1118, max=946169, avg=41628.43, stdev=49426.96 lat (usec): min=1118, max=946171, avg=41630.26, stdev=49426.79 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1434], 10.00th=[ 2180], 20.00th=[ 4752], | 30.00th=[ 9110], 40.00th=[ 20317], 50.00th=[ 29492], 60.00th=[ 38536], | 70.00th=[ 52691], 80.00th=[ 67634], 90.00th=[100140], 95.00th=[124257], | 99.00th=[200279], 99.50th=[221250], 99.90th=[446694], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 119, per=25.08%, avg=48.15, stdev=21.24, samples=253 iops : min= 1, max= 29, avg=11.40, stdev= 5.33, samples=253 lat (usec) : 50=0.59%, 100=3.06%, 250=0.39%, 1000=0.07% lat (msec) : 2=4.92%, 4=4.59%, 10=6.77%, 20=9.47%, 50=38.61% lat (msec) : 100=24.15%, 250=7.23%, 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=5.19%, ctx=6572, 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=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=145141: Sat Aug 15 15:46:52 2026 read: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6052KiB/130516msec) clat (usec): min=32, max=420731, avg=41421.24, stdev=31205.54 lat (usec): min=33, max=420732, avg=41426.24, stdev=31203.19 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 1319], 20.00th=[ 19530], | 30.00th=[ 25297], 40.00th=[ 31065], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 60031], 90.00th=[ 76022], 95.00th=[ 96994], | 99.00th=[139461], 99.50th=[168821], 99.90th=[246416], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 7, max= 126, per=25.39%, avg=46.47, stdev=21.23, samples=251 iops : min= 1, max= 31, avg=10.97, stdev= 5.36, samples=251 write: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6236KiB/130516msec); 0 zone resets clat (usec): min=1162, max=950470, avg=43410.22, stdev=51214.10 lat (usec): min=1163, max=950472, avg=43413.07, stdev=51213.86 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1450], 10.00th=[ 2442], 20.00th=[ 5538], | 30.00th=[ 10290], 40.00th=[ 19530], 50.00th=[ 30540], 60.00th=[ 42206], | 70.00th=[ 55837], 80.00th=[ 74974], 90.00th=[102237], 95.00th=[124257], | 99.00th=[189793], 99.50th=[208667], 99.90th=[583009], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 118, per=24.54%, avg=47.12, stdev=20.36, samples=256 iops : min= 1, max= 29, avg=11.14, stdev= 5.10, samples=256 lat (usec) : 50=0.55%, 100=3.68%, 250=0.39%, 500=0.20%, 1000=0.10% lat (msec) : 2=4.30%, 4=3.74%, 10=7.23%, 20=10.64%, 50=37.34% lat (msec) : 100=24.58%, 250=7.06%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.20%, ctx=6490, 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=184KiB/s (188kB/s), 45.7KiB/s-46.6KiB/s (46.8kB/s-47.7kB/s), io=23.4MiB (24.6MB), run=129438-130516msec WRITE: bw=193KiB/s (197kB/s), 47.8KiB/s-48.8KiB/s (48.9kB/s-49.0kB/s), io=24.6MiB (25.7MB), run=129438-130516msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145133: Sat Aug 15 15:49:24 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(5992KiB/282446msec) clat (msec): min=6, max=991, avg=40.72, stdev=44.85 lat (msec): min=6, max=991, avg=40.72, stdev=44.85 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 83], 95.00th=[ 110], | 99.00th=[ 188], 99.50th=[ 257], 99.90th=[ 435], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 96, per=28.90%, avg=24.28, stdev=16.06, samples=477 iops : min= 1, max= 24, avg= 5.46, stdev= 4.07, samples=477 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6296KiB/282446msec); 0 zone resets clat (msec): min=37, max=529, avg=140.42, stdev=71.56 lat (msec): min=37, max=529, avg=140.42, stdev=71.56 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 72], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 108], 50.00th=[ 121], 60.00th=[ 138], | 70.00th=[ 159], 80.00th=[ 188], 90.00th=[ 236], 95.00th=[ 292], | 99.00th=[ 384], 99.50th=[ 426], 99.90th=[ 514], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 7, max= 55, per=25.23%, avg=22.20, stdev=10.50, samples=546 iops : min= 1, max= 13, avg= 4.93, stdev= 2.71, samples=546 lat (msec) : 10=2.08%, 20=13.51%, 50=22.20%, 100=24.87%, 250=32.98% lat (msec) : 500=4.23%, 750=0.10%, 1000=0.03% cpu : usr=0.04%, sys=1.41%, ctx=5707, 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=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=145134: Sat Aug 15 15:49:24 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(5940KiB/283701msec) clat (msec): min=5, max=978, avg=39.43, stdev=42.89 lat (msec): min=5, max=978, avg=39.43, stdev=42.89 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 106], | 99.00th=[ 201], 99.50th=[ 228], 99.90th=[ 330], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 87, per=29.02%, avg=24.38, stdev=15.96, samples=470 iops : min= 1, max= 21, avg= 5.48, stdev= 4.02, samples=470 write: IOPS=5, BW=22.4KiB/s (22.9kB/s)(6348KiB/283701msec); 0 zone resets clat (msec): min=34, max=586, avg=141.59, stdev=70.54 lat (msec): min=34, max=586, avg=141.59, stdev=70.54 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 110], 50.00th=[ 123], 60.00th=[ 140], | 70.00th=[ 161], 80.00th=[ 192], 90.00th=[ 239], 95.00th=[ 279], | 99.00th=[ 372], 99.50th=[ 409], 99.90th=[ 510], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 48, per=25.07%, avg=22.07, stdev=10.29, samples=552 iops : min= 1, max= 12, avg= 4.89, stdev= 2.64, samples=552 lat (msec) : 10=1.99%, 20=13.57%, 50=22.72%, 100=24.02%, 250=33.14% lat (msec) : 500=4.46%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.37%, ctx=5609, 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=145135: Sat Aug 15 15:49:24 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(6028KiB/283180msec) clat (msec): min=6, max=343, avg=39.82, stdev=36.85 lat (msec): min=6, max=343, avg=39.82, stdev=36.85 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 79], 95.00th=[ 108], | 99.00th=[ 188], 99.50th=[ 243], 99.90th=[ 334], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 95, per=28.61%, avg=24.03, stdev=15.90, samples=484 iops : min= 1, max= 23, avg= 5.40, stdev= 4.01, samples=484 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6260KiB/283180msec); 0 zone resets clat (msec): min=37, max=1158, avg=142.34, stdev=77.10 lat (msec): min=37, max=1158, avg=142.34, stdev=77.10 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 108], 50.00th=[ 121], 60.00th=[ 138], | 70.00th=[ 161], 80.00th=[ 197], 90.00th=[ 243], 95.00th=[ 279], | 99.00th=[ 388], 99.50th=[ 435], 99.90th=[ 535], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 55, per=25.08%, avg=22.07, stdev=10.63, samples=545 iops : min= 1, max= 13, avg= 4.90, stdev= 2.73, samples=545 lat (msec) : 10=2.31%, 20=12.66%, 50=23.24%, 100=25.52%, 250=31.51% lat (msec) : 500=4.62%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.40%, ctx=5585, 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=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=145136: Sat Aug 15 15:49:24 2026 read: IOPS=5, BW=21.4KiB/s (21.0kB/s)(6052KiB/282225msec) clat (msec): min=5, max=409, avg=38.38, stdev=36.65 lat (msec): min=5, max=409, avg=38.39, stdev=36.66 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 74], 95.00th=[ 102], | 99.00th=[ 180], 99.50th=[ 275], 99.90th=[ 347], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7, max= 120, per=29.16%, avg=24.50, stdev=17.01, samples=477 iops : min= 1, max= 30, avg= 5.51, stdev= 4.31, samples=477 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6236KiB/282225msec); 0 zone resets clat (msec): min=42, max=1147, avg=143.50, stdev=77.02 lat (msec): min=42, max=1147, avg=143.50, stdev=77.02 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 110], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 192], 90.00th=[ 243], 95.00th=[ 292], | 99.00th=[ 405], 99.50th=[ 456], 99.90th=[ 625], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 56, per=24.81%, avg=21.83, stdev=10.43, samples=549 iops : min= 1, max= 14, avg= 4.84, stdev= 2.69, samples=549 lat (msec) : 10=2.38%, 20=13.31%, 50=23.14%, 100=24.06%, 250=32.23% lat (msec) : 500=4.69%, 750=0.16%, 2000=0.03% cpu : usr=0.04%, sys=1.35%, ctx=5490, 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=84.6KiB/s (86.7kB/s), 20.9KiB/s-21.4KiB/s (21.4kB/s-21.0kB/s), io=23.4MiB (24.6MB), run=282225-283701msec WRITE: bw=88.6KiB/s (90.7kB/s), 22.1KiB/s-22.4KiB/s (22.6kB/s-22.9kB/s), io=24.6MiB (25.7MB), run=282225-283701msec 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=145202: Sat Aug 15 15:50:03 2026 read: IOPS=14, BW=227KiB/s (233kB/s)(5920KiB/26026msec) clat (usec): min=37, max=196490, avg=35934.53, stdev=32662.46 lat (usec): min=37, max=196491, avg=35935.61, stdev=32662.45 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 72], | 30.00th=[ 15270], 40.00th=[ 25560], 50.00th=[ 32113], 60.00th=[ 40633], | 70.00th=[ 50070], 80.00th=[ 62129], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[135267], 99.50th=[187696], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 63, max= 669, per=26.25%, avg=227.55, stdev=101.26, samples=51 iops : min= 3, max= 41, avg=13.47, stdev= 6.36, samples=51 write: IOPS=15, BW=245KiB/s (251kB/s)(6368KiB/26026msec); 0 zone resets clat (usec): min=1580, max=193013, avg=31854.01, stdev=32993.93 lat (usec): min=1582, max=193013, avg=31859.49, stdev=32994.94 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2147], 10.00th=[ 3097], 20.00th=[ 5735], | 30.00th=[ 7832], 40.00th=[ 12518], 50.00th=[ 17957], 60.00th=[ 27132], | 70.00th=[ 41681], 80.00th=[ 59507], 90.00th=[ 77071], 95.00th=[104334], | 99.00th=[135267], 99.50th=[149947], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 62, max= 561, per=26.93%, avg=245.57, stdev=88.13, samples=51 iops : min= 3, max= 35, avg=14.63, stdev= 5.59, samples=51 lat (usec) : 50=1.82%, 100=9.51%, 250=1.56%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.86%, 4=4.82%, 10=11.72%, 20=10.16%, 50=29.82% lat (msec) : 100=23.05%, 250=4.30% cpu : usr=0.08%, sys=6.52%, ctx=1404, 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=145203: Sat Aug 15 15:50:03 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(5744KiB/27368msec) clat (usec): min=38, max=218234, avg=38024.29, stdev=33685.66 lat (usec): min=39, max=218236, avg=38033.66, stdev=33680.14 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 55], 10.00th=[ 60], 20.00th=[ 103], | 30.00th=[ 18482], 40.00th=[ 28181], 50.00th=[ 34341], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 61604], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[152044], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 28, max= 446, per=24.72%, avg=214.29, stdev=91.02, samples=52 iops : min= 1, max= 27, avg=12.63, stdev= 5.74, samples=52 write: IOPS=14, BW=239KiB/s (245kB/s)(6544KiB/27368msec); 0 zone resets clat (usec): min=1440, max=249201, avg=33437.70, stdev=38757.08 lat (usec): min=1441, max=249204, avg=33439.80, stdev=38757.04 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2024], 10.00th=[ 2802], 20.00th=[ 5145], | 30.00th=[ 7046], 40.00th=[ 11338], 50.00th=[ 18220], 60.00th=[ 30540], | 70.00th=[ 42206], 80.00th=[ 55313], 90.00th=[ 79168], 95.00th=[107480], | 99.00th=[187696], 99.50th=[223347], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 63, max= 544, per=26.31%, avg=239.91, stdev=108.36, samples=53 iops : min= 3, max= 34, avg=14.26, stdev= 6.85, samples=53 lat (usec) : 50=1.43%, 100=7.81%, 250=1.82%, 750=0.13% lat (msec) : 2=2.99%, 4=5.73%, 10=11.98%, 20=10.81%, 50=30.86% lat (msec) : 100=20.96%, 250=5.47% cpu : usr=0.12%, sys=6.62%, ctx=1430, 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=145204: Sat Aug 15 15:50:03 2026 read: IOPS=14, BW=226KiB/s (232kB/s)(6256KiB/27624msec) clat (usec): min=38, max=203609, avg=36458.86, stdev=31217.90 lat (usec): min=38, max=203611, avg=36467.54, stdev=31226.98 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 50], 10.00th=[ 60], 20.00th=[ 73], | 30.00th=[ 17433], 40.00th=[ 26870], 50.00th=[ 34866], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 62653], 90.00th=[ 77071], 95.00th=[ 89654], | 99.00th=[124257], 99.50th=[126354], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 63, max= 410, per=26.21%, avg=227.22, stdev=78.32, samples=54 iops : min= 3, max= 25, avg=13.44, stdev= 4.94, samples=54 write: IOPS=13, BW=218KiB/s (224kB/s)(6032KiB/27624msec); 0 zone resets clat (usec): min=1557, max=249344, avg=35309.11, stdev=36550.84 lat (usec): min=1558, max=249346, avg=35313.23, stdev=36549.38 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2311], 10.00th=[ 3097], 20.00th=[ 5014], | 30.00th=[ 8717], 40.00th=[ 14091], 50.00th=[ 23987], 60.00th=[ 35390], | 70.00th=[ 44827], 80.00th=[ 63177], 90.00th=[ 82314], 95.00th=[108528], | 99.00th=[156238], 99.50th=[208667], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 63, max= 478, per=23.71%, avg=216.28, stdev=100.17, samples=54 iops : min= 3, max= 29, avg=12.74, stdev= 6.29, samples=54 lat (usec) : 50=2.60%, 100=9.24%, 250=1.95%, 1000=0.13% lat (msec) : 2=2.34%, 4=5.08%, 10=9.51%, 20=8.59%, 50=31.38% lat (msec) : 100=24.74%, 250=4.43% cpu : usr=0.08%, sys=6.26%, ctx=1450, 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=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=145205: Sat Aug 15 15:50:03 2026 read: IOPS=14, BW=227KiB/s (233kB/s)(6032KiB/26521msec) clat (usec): min=35, max=174845, avg=36043.22, stdev=32447.95 lat (usec): min=35, max=174846, avg=36054.11, stdev=32440.40 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 51], 10.00th=[ 58], 20.00th=[ 69], | 30.00th=[ 2245], 40.00th=[ 26346], 50.00th=[ 35390], 60.00th=[ 44303], | 70.00th=[ 50594], 80.00th=[ 61080], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[147850], 99.50th=[168821], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 31, max= 476, per=25.97%, avg=225.17, stdev=87.78, samples=52 iops : min= 1, max= 29, avg=13.33, stdev= 5.49, samples=52 write: IOPS=14, BW=236KiB/s (242kB/s)(6256KiB/26521msec); 0 zone resets clat (usec): min=1559, max=227750, avg=32933.20, stdev=34150.38 lat (usec): min=1560, max=227751, avg=32942.17, stdev=34149.02 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2040], 10.00th=[ 3130], 20.00th=[ 4883], | 30.00th=[ 7242], 40.00th=[ 11338], 50.00th=[ 21365], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 78119], 95.00th=[102237], | 99.00th=[139461], 99.50th=[200279], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 63, max= 539, per=25.75%, avg=234.81, stdev=102.72, samples=52 iops : min= 3, max= 33, avg=13.92, stdev= 6.48, samples=52 lat (usec) : 50=2.08%, 100=10.42%, 250=1.56%, 500=0.39% lat (msec) : 2=2.73%, 4=6.12%, 10=10.94%, 20=7.55%, 50=30.73% lat (msec) : 100=23.18%, 250=4.30% cpu : usr=0.07%, sys=6.54%, ctx=1429, 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=867KiB/s (888kB/s), 210KiB/s-227KiB/s (215kB/s-233kB/s), io=23.4MiB (24.5MB), run=26026-27624msec WRITE: bw=912KiB/s (934kB/s), 218KiB/s-245KiB/s (224kB/s-251kB/s), io=24.6MiB (25.8MB), run=26026-27624msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145197: Sat Aug 15 15:50:43 2026 read: IOPS=5, BW=86.8KiB/s (88.8kB/s)(5920KiB/68238msec) clat (msec): min=7, max=229, avg=34.38, stdev=31.22 lat (msec): min=7, max=229, avg=34.38, stdev=31.22 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 70], 95.00th=[ 107], | 99.00th=[ 161], 99.50th=[ 215], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 287, per=27.25%, avg=94.82, stdev=60.16, samples=123 iops : min= 1, max= 17, avg= 5.18, stdev= 3.87, samples=123 write: IOPS=5, BW=93.3KiB/s (95.6kB/s)(6368KiB/68238msec); 0 zone resets clat (msec): min=47, max=489, avg=139.28, stdev=67.59 lat (msec): min=47, max=489, avg=139.28, stdev=67.59 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 77], 20.00th=[ 89], | 30.00th=[ 97], 40.00th=[ 107], 50.00th=[ 121], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 180], 90.00th=[ 247], 95.00th=[ 279], | 99.00th=[ 363], 99.50th=[ 414], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 31, max= 191, per=25.76%, avg=94.27, stdev=40.52, samples=133 iops : min= 1, max= 11, avg= 5.14, stdev= 2.66, samples=133 lat (msec) : 10=1.56%, 20=16.28%, 50=22.14%, 100=22.01%, 250=33.59% lat (msec) : 500=4.43% cpu : usr=0.03%, sys=1.33%, ctx=1351, 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=145198: Sat Aug 15 15:50:43 2026 read: IOPS=5, BW=83.6KiB/s (85.6kB/s)(5744KiB/68710msec) clat (msec): min=6, max=267, avg=36.54, stdev=36.47 lat (msec): min=6, max=267, avg=36.55, stdev=36.47 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=[ 29], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 85], 95.00th=[ 118], | 99.00th=[ 171], 99.50th=[ 222], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 22, max= 346, per=27.61%, avg=96.09, stdev=66.93, samples=116 iops : min= 1, max= 21, avg= 5.28, stdev= 4.25, samples=116 write: IOPS=5, BW=95.2KiB/s (97.5kB/s)(6544KiB/68710msec); 0 zone resets clat (msec): min=46, max=447, avg=135.52, stdev=62.05 lat (msec): min=46, max=447, avg=135.53, stdev=62.04 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 90], | 30.00th=[ 99], 40.00th=[ 110], 50.00th=[ 121], 60.00th=[ 133], | 70.00th=[ 153], 80.00th=[ 174], 90.00th=[ 215], 95.00th=[ 259], | 99.00th=[ 368], 99.50th=[ 397], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 31, max= 191, per=25.90%, avg=94.78, stdev=38.94, samples=134 iops : min= 1, max= 11, avg= 5.18, stdev= 2.55, samples=134 lat (msec) : 10=2.99%, 20=16.41%, 50=19.40%, 100=21.74%, 250=36.59% lat (msec) : 500=2.86% cpu : usr=0.04%, sys=1.42%, ctx=1337, 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=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=145199: Sat Aug 15 15:50:43 2026 read: IOPS=5, BW=93.7KiB/s (95.9kB/s)(6256KiB/66789msec) clat (msec): min=6, max=324, avg=35.46, stdev=35.89 lat (msec): min=6, max=324, avg=35.46, stdev=35.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 74], 95.00th=[ 97], | 99.00th=[ 236], 99.50th=[ 247], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 288, per=29.40%, avg=102.31, stdev=67.12, samples=121 iops : min= 1, max= 18, avg= 5.66, stdev= 4.27, samples=121 write: IOPS=5, BW=90.3KiB/s (92.5kB/s)(6032KiB/66789msec); 0 zone resets clat (msec): min=47, max=516, avg=139.54, stdev=69.47 lat (msec): min=47, max=516, avg=139.54, stdev=69.47 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 68], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 118], 60.00th=[ 134], | 70.00th=[ 153], 80.00th=[ 184], 90.00th=[ 245], 95.00th=[ 288], | 99.00th=[ 384], 99.50th=[ 460], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 31, max= 191, per=24.77%, avg=90.65, stdev=40.71, samples=131 iops : min= 1, max= 11, avg= 4.92, stdev= 2.64, samples=131 lat (msec) : 10=1.69%, 20=18.23%, 50=22.01%, 100=22.27%, 250=31.12% lat (msec) : 500=4.56%, 750=0.13% cpu : usr=0.03%, sys=1.47%, ctx=1387, 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=145200: Sat Aug 15 15:50:43 2026 read: IOPS=5, BW=88.6KiB/s (90.7kB/s)(6032KiB/68074msec) clat (msec): min=7, max=252, avg=36.49, stdev=34.80 lat (msec): min=7, max=252, avg=36.49, stdev=34.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 77], 95.00th=[ 103], | 99.00th=[ 188], 99.50th=[ 215], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 316, per=29.09%, avg=101.22, stdev=61.54, samples=116 iops : min= 1, max= 19, avg= 5.56, stdev= 3.90, samples=116 write: IOPS=5, BW=91.9KiB/s (94.1kB/s)(6256KiB/68074msec); 0 zone resets clat (msec): min=56, max=412, avg=138.38, stdev=58.53 lat (msec): min=56, max=412, avg=138.39, stdev=58.53 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 72], 10.00th=[ 82], 20.00th=[ 92], | 30.00th=[ 101], 40.00th=[ 115], 50.00th=[ 124], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 180], 90.00th=[ 211], 95.00th=[ 253], | 99.00th=[ 351], 99.50th=[ 363], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 31, max= 191, per=24.97%, avg=91.38, stdev=39.29, samples=134 iops : min= 1, max= 11, avg= 4.96, stdev= 2.56, samples=134 lat (msec) : 10=1.43%, 20=14.84%, 50=24.74%, 100=20.96%, 250=35.03% lat (msec) : 500=2.99% cpu : usr=0.04%, sys=1.39%, ctx=1310, 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=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=349KiB/s (357kB/s), 83.6KiB/s-93.7KiB/s (85.6kB/s-95.9kB/s), io=23.4MiB (24.5MB), run=66789-68710msec WRITE: bw=367KiB/s (376kB/s), 90.3KiB/s-95.2KiB/s (92.5kB/s-97.5kB/s), io=24.6MiB (25.8MB), run=66789-68710msec 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=145227: Sat Aug 15 15:51:00 2026 read: IOPS=1, BW=1388KiB/s (1422kB/s)(7168KiB/5163msec) clat (usec): min=475, max=362959, avg=219025.52, stdev=142561.20 lat (usec): min=477, max=362960, avg=219026.97, stdev=142561.19 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 32637], | 30.00th=[250610], 40.00th=[250610], 50.00th=[283116], 60.00th=[299893], | 70.00th=[299893], 80.00th=[304088], 90.00th=[362808], 95.00th=[362808], | 99.00th=[362808], 99.50th=[362808], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 1790, max= 4000, per=100.00%, avg=3242.67, stdev=1258.43, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=992KiB/s (1015kB/s)(5120KiB/5163msec); 0 zone resets clat (msec): min=291, max=939, avg=709.24, stdev=262.36 lat (msec): min=291, max=940, avg=709.30, stdev=262.38 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1865, max= 2039, per=46.74%, avg=1971.67, stdev=93.43, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (usec) : 500=8.33% lat (msec) : 50=8.33%, 500=50.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=6.78%, ctx=231, 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=145228: Sat Aug 15 15:51:00 2026 read: IOPS=0, BW=301KiB/s (309kB/s)(2048KiB/6797msec) clat (msec): min=403, max=540, avg=472.10, stdev=96.63 lat (msec): min=403, max=540, avg=472.10, stdev=96.63 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1805, max= 2000, per=63.14%, avg=1902.50, stdev=137.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1507KiB/s (1543kB/s)(10.0MiB/6797msec); 0 zone resets clat (msec): min=234, max=1726, avg=560.59, stdev=448.92 lat (msec): min=234, max=1726, avg=560.67, stdev=448.92 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 247], | 30.00th=[ 249], 40.00th=[ 268], 50.00th=[ 409], 60.00th=[ 472], | 70.00th=[ 642], 80.00th=[ 676], 90.00th=[ 684], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 1796, max= 4087, per=52.88%, avg=2230.43, stdev=821.73, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=25.00%, 500=33.33%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=8.23%, ctx=223, 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=145229: Sat Aug 15 15:51:00 2026 read: IOPS=1, BW=1156KiB/s (1184kB/s)(6144KiB/5315msec) clat (usec): min=316, max=584150, avg=278590.01, stdev=236388.81 lat (usec): min=316, max=584151, avg=278591.23, stdev=236389.03 clat percentiles (usec): | 1.00th=[ 318], 5.00th=[ 318], 10.00th=[ 318], 20.00th=[ 478], | 30.00th=[ 478], 40.00th=[316670], 50.00th=[316670], 60.00th=[325059], | 70.00th=[446694], 80.00th=[446694], 90.00th=[583009], 95.00th=[583009], | 99.00th=[583009], 99.50th=[583009], 99.90th=[583009], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 1865, max= 3992, per=87.35%, avg=2632.00, stdev=1181.00, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1156KiB/s (1184kB/s)(6144KiB/5315msec); 0 zone resets clat (msec): min=137, max=1054, avg=547.47, stdev=346.55 lat (msec): min=137, max=1054, avg=547.54, stdev=346.58 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 523], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1796, max= 3992, per=58.08%, avg=2449.75, stdev=1032.91, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=16.67% lat (msec) : 250=8.33%, 500=41.67%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=6.96%, ctx=192, 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=145230: Sat Aug 15 15:51:00 2026 read: IOPS=0, BW=846KiB/s (866kB/s)(5120KiB/6055msec) clat (msec): min=4, max=475, avg=245.85, stdev=189.37 lat (msec): min=4, max=475, avg=245.85, stdev=189.37 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 1865, max= 5389, per=100.00%, avg=3627.00, stdev=2491.84, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1184KiB/s (1212kB/s)(7168KiB/6055msec); 0 zone resets clat (msec): min=244, max=968, avg=649.53, stdev=328.10 lat (msec): min=244, max=969, avg=650.17, stdev=328.19 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 247], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 743], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1996, max= 3878, per=56.54%, avg=2384.80, stdev=834.89, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 10=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=25.00% cpu : usr=0.00%, sys=6.71%, ctx=184, 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=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=3013KiB/s (3085kB/s), 301KiB/s-1388KiB/s (309kB/s-1422kB/s), io=20.0MiB (20.0MB), run=5163-6797msec WRITE: bw=4218KiB/s (4320kB/s), 992KiB/s-1507KiB/s (1015kB/s-1543kB/s), io=28.0MiB (29.4MB), run=5163-6797msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145223: Sat Aug 15 15:51:00 2026 read: IOPS=1, BW=1386KiB/s (1419kB/s)(7168KiB/5172msec) clat (msec): min=175, max=421, avg=313.60, stdev=95.21 lat (msec): min=175, max=421, avg=313.60, stdev=95.21 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 190], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 351], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 384], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 1580, max= 4015, per=76.45%, avg=2265.20, stdev=994.39, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=990KiB/s (1014kB/s)(5120KiB/5172msec); 0 zone resets clat (msec): min=296, max=1015, avg=551.99, stdev=286.91 lat (msec): min=296, max=1015, avg=552.07, stdev=286.92 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1921, max= 2039, per=48.10%, avg=1995.80, stdev=45.33, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=16.67%, 500=66.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.84%, ctx=100, 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=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=145224: Sat Aug 15 15:51:00 2026 read: IOPS=0, BW=296KiB/s (303kB/s)(2048KiB/6910msec) clat (msec): min=146, max=492, avg=319.62, stdev=244.77 lat (msec): min=146, max=492, avg=319.63, stdev=244.77 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1549, max= 1921, per=58.56%, avg=1735.00, stdev=263.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1482KiB/s (1517kB/s)(10.0MiB/6910msec); 0 zone resets clat (msec): min=206, max=1315, avg=597.86, stdev=327.89 lat (msec): min=206, max=1315, avg=598.29, stdev=327.98 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 317], | 30.00th=[ 372], 40.00th=[ 380], 50.00th=[ 527], 60.00th=[ 592], | 70.00th=[ 667], 80.00th=[ 676], 90.00th=[ 927], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1735, max= 4007, per=53.82%, avg=2233.12, stdev=723.87, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 250=16.67%, 500=33.33%, 750=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.03%, sys=3.29%, ctx=96, 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=145225: Sat Aug 15 15:51:00 2026 read: IOPS=0, BW=899KiB/s (921kB/s)(6144KiB/6833msec) clat (msec): min=194, max=1034, avg=406.12, stdev=317.65 lat (msec): min=194, max=1034, avg=406.12, stdev=317.65 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 359], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1921, max= 4047, per=84.39%, avg=2500.50, stdev=1032.06, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=899KiB/s (921kB/s)(6144KiB/6833msec); 0 zone resets clat (msec): min=410, max=1012, avg=723.91, stdev=290.77 lat (msec): min=410, max=1012, avg=724.06, stdev=290.68 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1003], 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= 1615, max= 2043, per=46.87%, avg=1944.80, stdev=185.29, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33%, 2000=25.00% cpu : usr=0.00%, sys=2.03%, ctx=69, 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=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=145226: Sat Aug 15 15:51:00 2026 read: IOPS=0, BW=847KiB/s (867kB/s)(5120KiB/6045msec) clat (msec): min=122, max=378, avg=212.93, stdev=112.58 lat (msec): min=122, max=378, avg=212.94, stdev=112.58 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 3471, max= 4079, per=100.00%, avg=3775.00, stdev=429.92, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1186KiB/s (1214kB/s)(7168KiB/6045msec); 0 zone resets clat (msec): min=342, max=1090, avg=685.75, stdev=337.72 lat (msec): min=342, max=1090, avg=686.09, stdev=337.69 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 388], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 527], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 1083], 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= 1577, max= 2043, per=46.89%, avg=1945.50, stdev=181.37, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=8.33%, 1000=8.33%, 2000=16.67% cpu : usr=0.02%, sys=2.45%, ctx=57, 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=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=2964KiB/s (3035kB/s), 296KiB/s-1386KiB/s (303kB/s-1419kB/s), io=20.0MiB (20.0MB), run=5172-6910msec WRITE: bw=4149KiB/s (4249kB/s), 899KiB/s-1482KiB/s (921kB/s-1517kB/s), io=28.0MiB (29.4MB), run=5172-6910msec 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=145238: Sat Aug 15 15:51:17 2026 read: IOPS=0, BW=3317KiB/s (3397kB/s)(12.0MiB/3704msec) clat (msec): min=565, max=2316, avg=1228.76, stdev=949.61 lat (msec): min=565, max=2316, avg=1228.76, stdev=949.61 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.35%, ctx=49, 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=145239: Sat Aug 15 15:51:17 2026 read: IOPS=0, BW=1356KiB/s (1388kB/s)(4096KiB/3021msec) clat (nsec): min=275428k, max=275428k, avg=275427875.00, stdev= 0.00 lat (nsec): min=275430k, max=275430k, avg=275430485.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 5720, max= 5720, per=100.00%, avg=5720.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2712KiB/s (2777kB/s)(8192KiB/3021msec); 0 zone resets clat (msec): min=884, max=1693, avg=1288.99, stdev=571.41 lat (msec): min=885, max=1693, avg=1289.42, stdev=571.41 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 1687], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] 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) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.13%, sys=7.02%, ctx=80, 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=145240: Sat Aug 15 15:51:17 2026 write: IOPS=0, BW=2809KiB/s (2876kB/s)(12.0MiB/4375msec); 0 zone resets clat (msec): min=330, max=2923, avg=1457.33, stdev=1329.40 lat (msec): min=331, max=2924, avg=1457.81, stdev=1329.33 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 2937], 80.00th=[ 2937], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.07%, ctx=78, 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=145241: Sat Aug 15 15:51:17 2026 write: IOPS=1, BW=4459KiB/s (4566kB/s)(12.0MiB/2756msec); 0 zone resets clat (msec): min=507, max=1558, avg=892.77, stdev=578.79 lat (msec): min=511, max=1558, avg=894.47, stdev=577.48 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 6595, max= 8143, per=98.40%, avg=7369.00, stdev=1094.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.07%, sys=5.77%, ctx=67, 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=4423KiB/s (4529kB/s), 1356KiB/s-3317KiB/s (1388kB/s-3397kB/s), io=16.0MiB (16.8MB), run=3021-3704msec WRITE: bw=7490KiB/s (7670kB/s), 2712KiB/s-4459KiB/s (2777kB/s-4566kB/s), io=32.0MiB (33.6MB), run=2756-4375msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145243: Sat Aug 15 15:51:18 2026 read: IOPS=1, BW=4828KiB/s (4944kB/s)(12.0MiB/2545msec) clat (msec): min=684, max=915, avg=833.02, stdev=129.07 lat (msec): min=684, max=915, avg=833.02, stdev=129.06 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] 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=66.67% cpu : usr=0.16%, sys=14.58%, ctx=243, 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=145244: Sat Aug 15 15:51:18 2026 read: IOPS=0, BW=1024KiB/s (1049kB/s)(4096KiB/4000msec) clat (nsec): min=854384k, max=854384k, avg=854383505.00, stdev= 0.00 lat (nsec): min=854385k, max=854385k, avg=854385441.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 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= 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 write: IOPS=0, BW=2048KiB/s (2097kB/s)(8192KiB/4000msec); 0 zone resets clat (msec): min=1064, max=2079, avg=1572.11, stdev=717.41 lat (msec): min=1065, max=2079, avg=1572.44, stdev=717.36 clat percentiles (msec): | 1.00th=[ 1062], 5.00th=[ 1062], 10.00th=[ 1062], 20.00th=[ 1062], | 30.00th=[ 1062], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 2072], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 8143, max= 8143, per=99.40%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=7.45%, ctx=142, 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=145245: Sat Aug 15 15:51:18 2026 write: IOPS=0, BW=3531KiB/s (3616kB/s)(12.0MiB/3480msec); 0 zone resets clat (msec): min=973, max=1528, avg=1158.73, stdev=320.08 lat (msec): min=974, max=1528, avg=1159.56, stdev=319.76 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1536], 80.00th=[ 1536], 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= 8175, max= 8175, per=99.79%, avg=8175.00, stdev= 0.00, 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=0.00%, sys=4.08%, 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=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=145246: Sat Aug 15 15:51:18 2026 write: IOPS=0, BW=3514KiB/s (3598kB/s)(12.0MiB/3497msec); 0 zone resets clat (msec): min=664, max=1564, avg=1163.67, stdev=458.14 lat (msec): min=664, max=1566, avg=1164.49, stdev=458.60 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8175, max= 8175, per=99.79%, avg=8175.00, stdev= 0.00, 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=3.23%, ctx=41, 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=4096KiB/s (4194kB/s), 1024KiB/s-4828KiB/s (1049kB/s-4944kB/s), io=16.0MiB (16.8MB), run=2545-4000msec WRITE: bw=8192KiB/s (8389kB/s), 2048KiB/s-3531KiB/s (2097kB/s-3616kB/s), io=32.0MiB (33.6MB), run=3480-4000msec