== sanity test 398b: DIO and buffer IO race ============== 14:38:21 (1785782301) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 11.6601 s, 4.3 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=178094: Mon Aug 3 14:41:52 2026 read: IOPS=8, BW=33.5KiB/s (34.3kB/s)(5992KiB/178718msec) clat (usec): min=43, max=656651, avg=66655.22, stdev=45936.86 lat (usec): min=44, max=656652, avg=66659.82, stdev=45936.35 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 17171], 10.00th=[ 24249], 20.00th=[ 32900], | 30.00th=[ 40633], 40.00th=[ 49021], 50.00th=[ 57410], 60.00th=[ 67634], | 70.00th=[ 80217], 80.00th=[ 93848], 90.00th=[117965], 95.00th=[145753], | 99.00th=[214959], 99.50th=[233833], 99.90th=[442500], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 6, max= 103, per=25.08%, avg=33.11, stdev=15.61, samples=349 iops : min= 1, max= 25, avg= 7.62, stdev= 3.94, samples=349 write: IOPS=8, BW=35.2KiB/s (36.1kB/s)(6296KiB/178718msec); 0 zone resets clat (usec): min=985, max=354060, avg=49981.42, stdev=53511.59 lat (usec): min=986, max=354061, avg=49984.90, stdev=53510.72 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1221], 10.00th=[ 1418], 20.00th=[ 5342], | 30.00th=[ 10552], 40.00th=[ 21103], 50.00th=[ 33424], 60.00th=[ 47449], | 70.00th=[ 64750], 80.00th=[ 85459], 90.00th=[124257], 95.00th=[158335], | 99.00th=[231736], 99.50th=[270533], 99.90th=[337642], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 6, max= 118, per=25.25%, avg=34.85, stdev=18.12, samples=348 iops : min= 1, max= 29, avg= 8.07, stdev= 4.58, samples=348 lat (usec) : 50=0.33%, 100=1.01%, 250=0.03%, 1000=0.07% lat (msec) : 2=6.38%, 4=2.28%, 10=6.45%, 20=6.74%, 50=28.45% lat (msec) : 100=32.32%, 250=15.40%, 500=0.52%, 750=0.03% cpu : usr=0.05%, sys=3.80%, ctx=6245, 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=178095: Mon Aug 3 14:41:52 2026 read: IOPS=8, BW=33.2KiB/s (34.0kB/s)(5940KiB/178827msec) clat (usec): min=36, max=416504, avg=65338.99, stdev=42521.78 lat (usec): min=36, max=416505, avg=65346.58, stdev=42522.10 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 14877], 10.00th=[ 22676], 20.00th=[ 32375], | 30.00th=[ 40109], 40.00th=[ 47449], 50.00th=[ 57410], 60.00th=[ 66323], | 70.00th=[ 79168], 80.00th=[ 93848], 90.00th=[120062], 95.00th=[141558], | 99.00th=[206570], 99.50th=[229639], 99.90th=[320865], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 6, max= 87, per=25.10%, avg=33.13, stdev=14.58, samples=346 iops : min= 1, max= 21, avg= 7.62, stdev= 3.68, samples=346 write: IOPS=8, BW=35.5KiB/s (36.3kB/s)(6348KiB/178827msec); 0 zone resets clat (usec): min=933, max=603969, avg=51430.17, stdev=56355.11 lat (usec): min=933, max=603970, avg=51433.05, stdev=56354.66 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1254], 10.00th=[ 1418], 20.00th=[ 5735], | 30.00th=[ 11731], 40.00th=[ 21890], 50.00th=[ 33162], 60.00th=[ 47449], | 70.00th=[ 65799], 80.00th=[ 88605], 90.00th=[127402], 95.00th=[160433], | 99.00th=[248513], 99.50th=[278922], 99.90th=[396362], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 97, per=25.58%, avg=35.30, stdev=16.55, samples=347 iops : min= 1, max= 24, avg= 8.18, stdev= 4.18, samples=347 lat (usec) : 50=0.49%, 100=1.17%, 250=0.03%, 1000=0.07% lat (msec) : 2=6.32%, 4=2.08%, 10=5.96%, 20=7.49%, 50=28.91% lat (msec) : 100=30.53%, 250=16.31%, 500=0.62%, 750=0.03% cpu : usr=0.05%, sys=3.70%, ctx=6183, 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=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=178096: Mon Aug 3 14:41:52 2026 read: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6028KiB/181750msec) clat (usec): min=41, max=671164, avg=67206.85, stdev=44908.35 lat (usec): min=42, max=671165, avg=67221.99, stdev=44902.97 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 15795], 10.00th=[ 23987], 20.00th=[ 33424], | 30.00th=[ 41681], 40.00th=[ 49021], 50.00th=[ 58983], 60.00th=[ 69731], | 70.00th=[ 81265], 80.00th=[ 93848], 90.00th=[121111], 95.00th=[143655], | 99.00th=[210764], 99.50th=[231736], 99.90th=[320865], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 103, per=25.25%, avg=33.33, stdev=14.81, samples=349 iops : min= 1, max= 25, avg= 7.68, stdev= 3.75, samples=349 write: IOPS=8, BW=34.4KiB/s (35.3kB/s)(6260KiB/181750msec); 0 zone resets clat (usec): min=954, max=420261, avg=51283.97, stdev=55400.37 lat (usec): min=955, max=420263, avg=51287.51, stdev=55401.22 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1221], 10.00th=[ 1369], 20.00th=[ 4948], | 30.00th=[ 11076], 40.00th=[ 23200], 50.00th=[ 34866], 60.00th=[ 47449], | 70.00th=[ 65274], 80.00th=[ 86508], 90.00th=[126354], 95.00th=[156238], | 99.00th=[240124], 99.50th=[270533], 99.90th=[371196], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 5, max= 119, per=24.99%, avg=34.49, stdev=18.03, samples=350 iops : min= 1, max= 29, avg= 7.98, stdev= 4.56, samples=350 lat (usec) : 50=0.20%, 100=1.24%, 250=0.07%, 750=0.03%, 1000=0.13% lat (msec) : 2=6.45%, 4=2.54%, 10=5.44%, 20=6.35%, 50=29.07% lat (msec) : 100=31.97%, 250=16.05%, 500=0.46%, 750=0.03% cpu : usr=0.05%, sys=3.75%, ctx=6286, 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=178097: Mon Aug 3 14:41:52 2026 read: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6052KiB/181140msec) clat (usec): min=41, max=524762, avg=67236.51, stdev=47693.78 lat (usec): min=42, max=524764, avg=67239.60, stdev=47693.08 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 10028], 10.00th=[ 22676], 20.00th=[ 31589], | 30.00th=[ 39060], 40.00th=[ 47449], 50.00th=[ 56886], 60.00th=[ 67634], | 70.00th=[ 81265], 80.00th=[ 98042], 90.00th=[124257], 95.00th=[152044], | 99.00th=[238027], 99.50th=[258999], 99.90th=[417334], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 7, max= 87, per=25.27%, avg=33.35, stdev=14.90, samples=349 iops : min= 1, max= 21, avg= 7.68, stdev= 3.76, samples=349 write: IOPS=8, BW=34.4KiB/s (35.3kB/s)(6236KiB/181140msec); 0 zone resets clat (usec): min=918, max=555568, avg=50834.78, stdev=54330.44 lat (usec): min=918, max=555570, avg=50846.23, stdev=54337.53 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1254], 10.00th=[ 1450], 20.00th=[ 5604], | 30.00th=[ 11863], 40.00th=[ 22152], 50.00th=[ 35390], 60.00th=[ 48497], | 70.00th=[ 64226], 80.00th=[ 90702], 90.00th=[122160], 95.00th=[156238], | 99.00th=[227541], 99.50th=[278922], 99.90th=[400557], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 5, max= 111, per=24.92%, avg=34.39, stdev=18.74, samples=348 iops : min= 1, max= 27, avg= 7.95, stdev= 4.72, samples=348 lat (usec) : 50=0.52%, 100=1.50%, 250=0.03%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.12%, 4=2.21%, 10=5.89%, 20=6.97%, 50=28.52% lat (msec) : 100=29.95%, 250=17.42%, 500=0.55%, 750=0.07% cpu : usr=0.05%, sys=3.64%, ctx=6192, 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=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=132KiB/s (135kB/s), 33.2KiB/s-33.5KiB/s (33.0kB/s-34.3kB/s), io=23.4MiB (24.6MB), run=178718-181750msec WRITE: bw=138KiB/s (142kB/s), 34.4KiB/s-35.5KiB/s (35.3kB/s-36.3kB/s), io=24.6MiB (25.7MB), run=178718-181750msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178089: Mon Aug 3 14:42:48 2026 read: IOPS=6, BW=25.1KiB/s (25.7kB/s)(5992KiB/239183msec) clat (msec): min=6, max=1325, avg=63.33, stdev=64.94 lat (msec): min=6, max=1325, avg=63.33, stdev=64.94 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 70], 80.00th=[ 95], 90.00th=[ 140], 95.00th=[ 180], | 99.00th=[ 275], 99.50th=[ 317], 99.90th=[ 542], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 119, per=26.33%, avg=26.33, stdev=19.45, samples=437 iops : min= 1, max= 29, avg= 5.91, stdev= 4.91, samples=437 write: IOPS=6, BW=26.3KiB/s (26.0kB/s)(6296KiB/239183msec); 0 zone resets clat (msec): min=12, max=647, avg=91.32, stdev=68.91 lat (msec): min=12, max=647, avg=91.32, stdev=68.91 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 48], 40.00th=[ 56], 50.00th=[ 68], 60.00th=[ 84], | 70.00th=[ 107], 80.00th=[ 140], 90.00th=[ 180], 95.00th=[ 220], | 99.00th=[ 313], 99.50th=[ 405], 99.90th=[ 617], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 7, max= 95, per=26.00%, avg=27.04, stdev=17.64, samples=447 iops : min= 1, max= 23, avg= 6.09, stdev= 4.47, samples=447 lat (msec) : 10=0.88%, 20=6.93%, 50=37.86%, 100=28.94%, 250=23.08% lat (msec) : 500=2.12%, 750=0.16%, 2000=0.03% cpu : usr=0.03%, sys=1.35%, ctx=4754, 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=178090: Mon Aug 3 14:42:48 2026 read: IOPS=6, BW=24.8KiB/s (25.4kB/s)(5940KiB/239701msec) clat (msec): min=5, max=1315, avg=61.69, stdev=65.78 lat (msec): min=5, max=1315, avg=61.70, stdev=65.77 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 52], | 70.00th=[ 67], 80.00th=[ 90], 90.00th=[ 133], 95.00th=[ 176], | 99.00th=[ 279], 99.50th=[ 363], 99.90th=[ 558], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 97, per=26.58%, avg=26.58, stdev=19.25, samples=430 iops : min= 1, max= 24, avg= 5.97, stdev= 4.87, samples=430 write: IOPS=6, BW=26.5KiB/s (27.1kB/s)(6348KiB/239701msec); 0 zone resets clat (msec): min=14, max=518, avg=92.93, stdev=68.43 lat (msec): min=14, max=518, avg=92.93, stdev=68.43 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 41], | 30.00th=[ 50], 40.00th=[ 59], 50.00th=[ 70], 60.00th=[ 86], | 70.00th=[ 107], 80.00th=[ 138], 90.00th=[ 192], 95.00th=[ 234], | 99.00th=[ 330], 99.50th=[ 372], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 7, max= 95, per=25.61%, avg=26.64, stdev=17.50, samples=457 iops : min= 1, max= 23, avg= 5.99, stdev= 4.42, samples=457 lat (msec) : 10=0.98%, 20=7.52%, 50=35.74%, 100=30.47%, 250=22.92% lat (msec) : 500=2.21%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.43%, ctx=4792, 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=178091: Mon Aug 3 14:42:48 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6028KiB/238411msec) clat (msec): min=6, max=566, avg=61.40, stdev=55.99 lat (msec): min=6, max=566, avg=61.40, stdev=55.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 67], 80.00th=[ 90], 90.00th=[ 133], 95.00th=[ 184], | 99.00th=[ 262], 99.50th=[ 305], 99.90th=[ 464], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 111, per=26.74%, avg=26.74, stdev=18.46, samples=434 iops : min= 1, max= 27, avg= 6.02, stdev= 4.66, samples=434 write: IOPS=6, BW=26.3KiB/s (26.9kB/s)(6260KiB/238411msec); 0 zone resets clat (msec): min=11, max=1353, avg=92.82, stdev=74.39 lat (msec): min=11, max=1353, avg=92.83, stdev=74.39 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 42], | 30.00th=[ 50], 40.00th=[ 59], 50.00th=[ 70], 60.00th=[ 84], | 70.00th=[ 106], 80.00th=[ 136], 90.00th=[ 182], 95.00th=[ 224], | 99.00th=[ 334], 99.50th=[ 384], 99.90th=[ 651], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7, max= 87, per=25.86%, avg=26.89, stdev=16.96, samples=448 iops : min= 1, max= 21, avg= 6.06, stdev= 4.29, samples=448 lat (msec) : 10=0.88%, 20=6.80%, 50=37.11%, 100=30.70%, 250=22.17% lat (msec) : 500=2.25%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.40%, ctx=4707, 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=178092: Mon Aug 3 14:42:48 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6052KiB/239630msec) clat (msec): min=5, max=395, avg=63.14, stdev=56.57 lat (msec): min=5, max=395, avg=63.14, stdev=56.57 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 53], | 70.00th=[ 70], 80.00th=[ 95], 90.00th=[ 146], 95.00th=[ 188], | 99.00th=[ 262], 99.50th=[ 309], 99.90th=[ 376], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 119, per=27.20%, avg=27.20, stdev=19.10, samples=428 iops : min= 1, max= 29, avg= 6.13, stdev= 4.81, samples=428 write: IOPS=6, BW=26.0KiB/s (26.6kB/s)(6236KiB/239630msec); 0 zone resets clat (msec): min=13, max=1318, avg=92.05, stdev=74.66 lat (msec): min=13, max=1318, avg=92.05, stdev=74.66 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 42], | 30.00th=[ 49], 40.00th=[ 58], 50.00th=[ 69], 60.00th=[ 85], | 70.00th=[ 105], 80.00th=[ 134], 90.00th=[ 184], 95.00th=[ 222], | 99.00th=[ 359], 99.50th=[ 418], 99.90th=[ 584], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 111, per=25.28%, avg=26.29, stdev=17.60, samples=455 iops : min= 1, max= 27, avg= 5.91, stdev= 4.45, samples=455 lat (msec) : 10=1.07%, 20=6.45%, 50=37.17%, 100=30.08%, 250=23.01% lat (msec) : 500=2.12%, 750=0.07%, 2000=0.03% cpu : usr=0.03%, sys=1.38%, ctx=4740, 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=100KiB/s (103kB/s), 24.8KiB/s-25.3KiB/s (25.4kB/s-25.9kB/s), io=23.4MiB (24.6MB), run=238411-239701msec WRITE: bw=105KiB/s (107kB/s), 26.0KiB/s-26.5KiB/s (26.6kB/s-27.1kB/s), io=24.6MiB (25.7MB), run=238411-239701msec 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=178151: Mon Aug 3 14:44:09 2026 read: IOPS=5, BW=92.7KiB/s (94.9kB/s)(5920KiB/63868msec) clat (usec): min=38, max=444967, avg=90817.34, stdev=61569.21 lat (usec): min=38, max=444969, avg=90846.65, stdev=61553.59 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 25560], 20.00th=[ 47973], | 30.00th=[ 57410], 40.00th=[ 68682], 50.00th=[ 78119], 60.00th=[ 90702], | 70.00th=[106431], 80.00th=[133694], 90.00th=[164627], 95.00th=[210764], | 99.00th=[299893], 99.50th=[316670], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 29, max= 256, per=25.00%, avg=93.76, stdev=45.26, samples=122 iops : min= 1, max= 16, avg= 5.06, stdev= 2.91, samples=122 write: IOPS=6, BW=99.7KiB/s (102kB/s)(6368KiB/63868msec); 0 zone resets clat (usec): min=1557, max=511034, avg=75879.31, stdev=75856.39 lat (usec): min=1559, max=511034, avg=75881.23, stdev=75856.35 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1958], 10.00th=[ 6587], 20.00th=[ 14222], | 30.00th=[ 23725], 40.00th=[ 39060], 50.00th=[ 52691], 60.00th=[ 69731], | 70.00th=[ 96994], 80.00th=[132645], 90.00th=[179307], 95.00th=[219153], | 99.00th=[341836], 99.50th=[467665], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 27, max= 254, per=26.69%, avg=105.17, stdev=51.15, samples=117 iops : min= 1, max= 15, avg= 5.79, stdev= 3.26, samples=117 lat (usec) : 50=0.39%, 100=3.12%, 250=0.26%, 500=0.13% lat (msec) : 2=2.99%, 4=1.30%, 10=3.12%, 20=6.77%, 50=17.32% lat (msec) : 100=33.07%, 250=29.17%, 500=2.21%, 750=0.13% cpu : usr=0.04%, sys=3.58%, ctx=1643, 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=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=178152: Mon Aug 3 14:44:09 2026 read: IOPS=5, BW=90.4KiB/s (92.6kB/s)(5744KiB/63524msec) clat (usec): min=42, max=443541, avg=93017.75, stdev=60790.08 lat (usec): min=42, max=443542, avg=93019.10, stdev=60790.59 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 76], 10.00th=[ 32900], 20.00th=[ 49021], | 30.00th=[ 63177], 40.00th=[ 71828], 50.00th=[ 81265], 60.00th=[ 95945], | 70.00th=[111674], 80.00th=[128451], 90.00th=[162530], 95.00th=[200279], | 99.00th=[362808], 99.50th=[383779], 99.90th=[442500], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 30, max= 191, per=25.51%, avg=95.65, stdev=43.67, samples=116 iops : min= 1, max= 11, avg= 5.19, stdev= 2.77, samples=116 write: IOPS=6, BW=103KiB/s (105kB/s)(6544KiB/63524msec); 0 zone resets clat (usec): min=1539, max=536554, avg=73447.16, stdev=72541.29 lat (usec): min=1541, max=536556, avg=73449.04, stdev=72541.28 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1958], 10.00th=[ 6456], 20.00th=[ 13829], | 30.00th=[ 23725], 40.00th=[ 36963], 50.00th=[ 51643], 60.00th=[ 66323], | 70.00th=[ 91751], 80.00th=[129500], 90.00th=[173016], 95.00th=[227541], | 99.00th=[308282], 99.50th=[308282], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 27, max= 251, per=26.33%, avg=103.74, stdev=51.37, samples=121 iops : min= 1, max= 15, avg= 5.71, stdev= 3.33, samples=121 lat (usec) : 50=0.13%, 100=2.34%, 250=0.39% lat (msec) : 2=2.73%, 4=1.43%, 10=3.39%, 20=7.42%, 50=17.58% lat (msec) : 100=32.81%, 250=29.17%, 500=2.47%, 750=0.13% cpu : usr=0.06%, sys=3.35%, ctx=1613, 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=178153: Mon Aug 3 14:44:09 2026 read: IOPS=6, BW=98.7KiB/s (101kB/s)(6256KiB/63415msec) clat (usec): min=38, max=516294, avg=90133.16, stdev=64560.24 lat (usec): min=38, max=516295, avg=90134.41, stdev=64560.24 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 6980], 20.00th=[ 42206], | 30.00th=[ 53740], 40.00th=[ 65799], 50.00th=[ 81265], 60.00th=[ 93848], | 70.00th=[112722], 80.00th=[131597], 90.00th=[173016], 95.00th=[210764], | 99.00th=[274727], 99.50th=[421528], 99.90th=[517997], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 30, max= 223, per=26.95%, avg=101.06, stdev=48.21, samples=120 iops : min= 1, max= 13, avg= 5.53, stdev= 3.07, samples=120 write: IOPS=5, BW=95.1KiB/s (97.4kB/s)(6032KiB/63415msec); 0 zone resets clat (usec): min=1496, max=399377, avg=74613.87, stdev=67853.34 lat (usec): min=1497, max=399379, avg=74624.27, stdev=67845.40 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 1909], 10.00th=[ 8356], 20.00th=[ 15533], | 30.00th=[ 29754], 40.00th=[ 43779], 50.00th=[ 59507], 60.00th=[ 74974], | 70.00th=[ 95945], 80.00th=[119014], 90.00th=[162530], 95.00th=[200279], | 99.00th=[316670], 99.50th=[354419], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 30, max= 277, per=24.62%, avg=97.00, stdev=49.36, samples=119 iops : min= 1, max= 17, avg= 5.29, stdev= 3.17, samples=119 lat (usec) : 50=0.78%, 100=3.78%, 500=0.13%, 750=0.13% lat (msec) : 2=3.26%, 4=0.78%, 10=2.60%, 20=6.12%, 50=17.19% lat (msec) : 100=32.55%, 250=30.47%, 500=2.08%, 750=0.13% cpu : usr=0.03%, sys=3.55%, ctx=1647, 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=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=178154: Mon Aug 3 14:44:09 2026 read: IOPS=6, BW=99.3KiB/s (102kB/s)(6032KiB/60730msec) clat (usec): min=41, max=487441, avg=86606.35, stdev=63903.11 lat (usec): min=42, max=487441, avg=86645.43, stdev=63906.36 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 237], 20.00th=[ 40633], | 30.00th=[ 51119], 40.00th=[ 61080], 50.00th=[ 76022], 60.00th=[ 90702], | 70.00th=[108528], 80.00th=[128451], 90.00th=[164627], 95.00th=[206570], | 99.00th=[278922], 99.50th=[375391], 99.90th=[488637], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 30, max= 287, per=27.56%, avg=103.35, stdev=47.22, samples=113 iops : min= 1, max= 17, avg= 5.66, stdev= 3.03, samples=113 write: IOPS=6, BW=103KiB/s (105kB/s)(6256KiB/60730msec); 0 zone resets clat (usec): min=1517, max=414714, avg=71653.16, stdev=77273.48 lat (usec): min=1519, max=414716, avg=71656.29, stdev=77273.37 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1876], 10.00th=[ 3621], 20.00th=[ 9896], | 30.00th=[ 16581], 40.00th=[ 28443], 50.00th=[ 44303], 60.00th=[ 63701], | 70.00th=[ 89654], 80.00th=[124257], 90.00th=[179307], 95.00th=[248513], | 99.00th=[341836], 99.50th=[408945], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 28, max= 339, per=27.72%, avg=109.22, stdev=58.03, samples=111 iops : min= 1, max= 21, avg= 6.05, stdev= 3.73, samples=111 lat (usec) : 50=0.39%, 100=4.17%, 250=0.39%, 500=0.13% lat (msec) : 2=4.30%, 4=2.21%, 10=4.56%, 20=7.42%, 50=16.28% lat (msec) : 100=29.56%, 250=27.47%, 500=3.12% cpu : usr=0.04%, sys=3.57%, ctx=1583, 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=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=375KiB/s (384kB/s), 90.4KiB/s-99.3KiB/s (92.6kB/s-102kB/s), io=23.4MiB (24.5MB), run=60730-63868msec WRITE: bw=395KiB/s (404kB/s), 95.1KiB/s-103KiB/s (97.4kB/s-105kB/s), io=24.6MiB (25.8MB), run=60730-63868msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178146: Mon Aug 3 14:44:27 2026 read: IOPS=4, BW=69.8KiB/s (71.4kB/s)(5920KiB/84874msec) clat (msec): min=8, max=467, avg=94.14, stdev=85.23 lat (msec): min=8, max=467, avg=94.15, stdev=85.22 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 19], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 40], 40.00th=[ 51], 50.00th=[ 61], 60.00th=[ 75], | 70.00th=[ 99], 80.00th=[ 142], 90.00th=[ 234], 95.00th=[ 292], | 99.00th=[ 380], 99.50th=[ 422], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 27, max= 287, per=28.42%, avg=80.13, stdev=58.39, samples=142 iops : min= 1, max= 17, avg= 4.15, stdev= 3.68, samples=142 write: IOPS=4, BW=75.0KiB/s (76.8kB/s)(6368KiB/84874msec); 0 zone resets clat (msec): min=17, max=765, avg=125.42, stdev=97.29 lat (msec): min=17, max=765, avg=125.42, stdev=97.29 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 33], 10.00th=[ 40], 20.00th=[ 54], | 30.00th=[ 67], 40.00th=[ 81], 50.00th=[ 95], 60.00th=[ 110], | 70.00th=[ 144], 80.00th=[ 190], 90.00th=[ 245], 95.00th=[ 300], | 99.00th=[ 493], 99.50th=[ 642], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 27, max= 316, per=27.18%, avg=80.46, stdev=52.91, samples=153 iops : min= 1, max= 19, avg= 4.18, stdev= 3.36, samples=153 lat (msec) : 10=0.13%, 20=3.26%, 50=24.74%, 100=33.98%, 250=29.30% lat (msec) : 500=8.20%, 750=0.26%, 1000=0.13% cpu : usr=0.02%, sys=1.10%, ctx=1173, 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=178147: Mon Aug 3 14:44:27 2026 read: IOPS=4, BW=67.7KiB/s (69.3kB/s)(5744KiB/84903msec) clat (msec): min=8, max=696, avg=92.56, stdev=90.63 lat (msec): min=8, max=696, avg=92.56, stdev=90.63 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 19], 10.00th=[ 25], 20.00th=[ 33], | 30.00th=[ 44], 40.00th=[ 54], 50.00th=[ 63], 60.00th=[ 78], | 70.00th=[ 95], 80.00th=[ 128], 90.00th=[ 205], 95.00th=[ 271], | 99.00th=[ 542], 99.50th=[ 600], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 27, max= 298, per=28.20%, avg=79.53, stdev=50.32, samples=139 iops : min= 1, max= 18, avg= 4.12, stdev= 3.19, samples=139 write: IOPS=4, BW=77.1KiB/s (78.9kB/s)(6544KiB/84903msec); 0 zone resets clat (msec): min=24, max=445, avg=125.64, stdev=86.59 lat (msec): min=24, max=445, avg=125.65, stdev=86.59 clat percentiles (msec): | 1.00th=[ 30], 5.00th=[ 37], 10.00th=[ 46], 20.00th=[ 56], | 30.00th=[ 70], 40.00th=[ 86], 50.00th=[ 96], 60.00th=[ 116], | 70.00th=[ 148], 80.00th=[ 180], 90.00th=[ 253], 95.00th=[ 330], | 99.00th=[ 384], 99.50th=[ 435], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 27, max= 286, per=28.37%, avg=83.97, stdev=50.19, samples=150 iops : min= 1, max= 17, avg= 4.41, stdev= 3.18, samples=150 lat (msec) : 10=0.26%, 20=2.60%, 50=22.01%, 100=36.59%, 250=30.60% lat (msec) : 500=7.42%, 750=0.52% cpu : usr=0.01%, sys=1.21%, ctx=1187, 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=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=178148: Mon Aug 3 14:44:27 2026 read: IOPS=4, BW=74.1KiB/s (75.9kB/s)(6256KiB/84375msec) clat (msec): min=6, max=646, avg=93.57, stdev=86.22 lat (msec): min=6, max=646, avg=93.57, stdev=86.22 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 35], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 64], 60.00th=[ 73], | 70.00th=[ 96], 80.00th=[ 132], 90.00th=[ 222], 95.00th=[ 275], | 99.00th=[ 384], 99.50th=[ 472], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 27, max= 319, per=28.32%, avg=79.85, stdev=54.49, samples=152 iops : min= 1, max= 19, avg= 4.15, stdev= 3.47, samples=152 write: IOPS=4, BW=71.5KiB/s (73.2kB/s)(6032KiB/84375msec); 0 zone resets clat (msec): min=17, max=521, avg=125.84, stdev=90.65 lat (msec): min=17, max=521, avg=125.84, stdev=90.65 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 35], 10.00th=[ 42], 20.00th=[ 54], | 30.00th=[ 66], 40.00th=[ 80], 50.00th=[ 95], 60.00th=[ 121], | 70.00th=[ 150], 80.00th=[ 194], 90.00th=[ 259], 95.00th=[ 305], | 99.00th=[ 426], 99.50th=[ 506], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 29, max= 318, per=26.15%, avg=77.40, stdev=50.43, samples=149 iops : min= 1, max= 19, avg= 3.99, stdev= 3.18, samples=149 lat (msec) : 10=0.39%, 20=2.08%, 50=25.00%, 100=34.51%, 250=29.30% lat (msec) : 500=8.20%, 750=0.52% cpu : usr=0.03%, sys=1.32%, ctx=1229, 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=178149: Mon Aug 3 14:44:27 2026 read: IOPS=4, BW=71.2KiB/s (72.9kB/s)(6032KiB/84766msec) clat (msec): min=11, max=512, avg=88.86, stdev=76.38 lat (msec): min=11, max=512, avg=88.86, stdev=76.38 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 35], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 64], 60.00th=[ 79], | 70.00th=[ 96], 80.00th=[ 122], 90.00th=[ 197], 95.00th=[ 253], | 99.00th=[ 376], 99.50th=[ 414], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 27, max= 255, per=28.22%, avg=79.57, stdev=53.77, samples=146 iops : min= 1, max= 15, avg= 4.13, stdev= 3.43, samples=146 write: IOPS=4, BW=73.8KiB/s (75.6kB/s)(6256KiB/84766msec); 0 zone resets clat (msec): min=19, max=786, avg=130.53, stdev=98.25 lat (msec): min=19, max=786, avg=130.54, stdev=98.25 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 37], 10.00th=[ 43], 20.00th=[ 56], | 30.00th=[ 68], 40.00th=[ 85], 50.00th=[ 101], 60.00th=[ 121], | 70.00th=[ 148], 80.00th=[ 197], 90.00th=[ 264], 95.00th=[ 313], | 99.00th=[ 447], 99.50th=[ 709], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 29, max= 238, per=26.42%, avg=78.20, stdev=47.79, samples=155 iops : min= 1, max= 14, avg= 4.03, stdev= 3.01, samples=155 lat (msec) : 20=2.34%, 50=23.96%, 100=34.38%, 250=30.60%, 500=8.33% lat (msec) : 750=0.26%, 1000=0.13% cpu : usr=0.03%, sys=1.18%, ctx=1239, 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=282KiB/s (289kB/s), 67.7KiB/s-74.1KiB/s (69.3kB/s-75.9kB/s), io=23.4MiB (24.5MB), run=84375-84903msec WRITE: bw=297KiB/s (304kB/s), 71.5KiB/s-77.1KiB/s (73.2kB/s-78.9kB/s), io=24.6MiB (25.8MB), run=84375-84903msec 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=178173: Mon Aug 3 14:44:48 2026 read: IOPS=1, BW=1434KiB/s (1469kB/s)(7168KiB/4997msec) clat (msec): min=138, max=814, avg=310.73, stdev=231.35 lat (msec): min=138, max=814, avg=310.74, stdev=231.35 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 176], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 224], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 317], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1935, max= 4296, per=90.71%, avg=2563.50, stdev=1155.85, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1025KiB/s (1049kB/s)(5120KiB/4997msec); 0 zone resets clat (msec): min=185, max=844, avg=549.03, stdev=286.33 lat (msec): min=185, max=844, avg=549.10, stdev=286.33 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 793], 80.00th=[ 793], 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= 1924, max= 2043, per=50.00%, avg=1978.00, stdev=48.76, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=25.00% cpu : usr=0.00%, sys=2.20%, 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=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=178174: Mon Aug 3 14:44:48 2026 read: IOPS=0, BW=283KiB/s (289kB/s)(2048KiB/7246msec) clat (msec): min=218, max=930, avg=574.50, stdev=504.06 lat (msec): min=218, max=930, avg=574.51, stdev=504.06 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 927], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1892, max= 2039, per=69.55%, avg=1965.50, stdev=103.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1413KiB/s (1447kB/s)(10.0MiB/7246msec); 0 zone resets clat (msec): min=186, max=1178, avg=603.83, stdev=335.94 lat (msec): min=186, max=1178, avg=603.90, stdev=335.95 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 209], | 30.00th=[ 271], 40.00th=[ 493], 50.00th=[ 502], 60.00th=[ 575], | 70.00th=[ 844], 80.00th=[ 885], 90.00th=[ 894], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1954, max= 6035, per=65.15%, avg=2577.43, stdev=1524.94, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (msec) : 250=25.00%, 500=16.67%, 750=16.67%, 1000=33.33%, 2000=8.33% cpu : usr=0.00%, sys=2.30%, ctx=88, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178175: Mon Aug 3 14:44:48 2026 read: IOPS=0, BW=850KiB/s (871kB/s)(6144KiB/7224msec) clat (msec): min=172, max=942, avg=435.31, stdev=309.63 lat (msec): min=172, max=942, avg=435.31, stdev=309.63 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 309], | 70.00th=[ 693], 80.00th=[ 693], 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= 1921, max= 3908, per=86.91%, avg=2456.00, stdev=968.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=850KiB/s (871kB/s)(6144KiB/7224msec); 0 zone resets clat (msec): min=231, max=1960, avg=747.23, stdev=653.34 lat (msec): min=237, max=1960, avg=748.33, stdev=652.36 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 776], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 1973, max= 4023, per=60.68%, avg=2400.40, stdev=907.17, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=25.00%, 500=33.33%, 750=8.33%, 1000=25.00%, 2000=8.33% cpu : usr=0.01%, sys=2.49%, ctx=132, 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=178176: Mon Aug 3 14:44:48 2026 read: IOPS=1, BW=1054KiB/s (1080kB/s)(5120KiB/4856msec) clat (msec): min=129, max=797, avg=400.94, stdev=294.35 lat (msec): min=129, max=797, avg=400.94, stdev=294.35 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1924, max= 3992, per=93.88%, avg=2653.00, stdev=1161.13, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1476KiB/s (1512kB/s)(7168KiB/4856msec); 0 zone resets clat (msec): min=262, max=661, avg=401.46, stdev=147.91 lat (msec): min=262, max=661, avg=401.81, stdev=147.78 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 275], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 342], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 542], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1477, max= 3871, per=56.18%, avg=2222.67, stdev=834.23, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=16.67%, 500=50.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=2.49%, ctx=84, 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=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=2826KiB/s (2894kB/s), 283KiB/s-1434KiB/s (289kB/s-1469kB/s), io=20.0MiB (20.0MB), run=4856-7246msec WRITE: bw=3957KiB/s (4052kB/s), 850KiB/s-1476KiB/s (871kB/s-1512kB/s), io=28.0MiB (29.4MB), run=4856-7246msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178178: Mon Aug 3 14:44:49 2026 read: IOPS=1, BW=1379KiB/s (1412kB/s)(7168KiB/5198msec) clat (usec): min=484, max=725746, avg=344362.44, stdev=270936.74 lat (usec): min=485, max=725747, avg=344363.70, stdev=270936.75 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 4883], | 30.00th=[295699], 40.00th=[295699], 50.00th=[383779], 60.00th=[429917], | 70.00th=[429917], 80.00th=[566232], 90.00th=[725615], 95.00th=[725615], | 99.00th=[725615], 99.50th=[725615], 99.90th=[725615], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 1464, max= 2031, per=60.48%, avg=1842.17, stdev=215.39, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=985KiB/s (1009kB/s)(5120KiB/5198msec); 0 zone resets clat (msec): min=214, max=1206, avg=556.77, stdev=396.55 lat (msec): min=214, max=1206, avg=556.90, stdev=396.52 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1729, max= 4031, per=59.80%, avg=2549.67, stdev=1285.36, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 10=8.33%, 250=8.33%, 500=41.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=8.45%, ctx=221, 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=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=178179: Mon Aug 3 14:44:49 2026 read: IOPS=0, BW=305KiB/s (312kB/s)(2048KiB/6723msec) clat (msec): min=192, max=493, avg=343.12, stdev=212.66 lat (msec): min=192, max=493, avg=343.12, stdev=212.66 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 192], 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= 1643, max= 2043, per=60.51%, avg=1843.00, stdev=282.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1523KiB/s (1560kB/s)(10.0MiB/6723msec); 0 zone resets clat (msec): min=225, max=1652, avg=602.64, stdev=425.37 lat (msec): min=225, max=1652, avg=602.71, stdev=425.38 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 257], | 30.00th=[ 380], 40.00th=[ 384], 50.00th=[ 439], 60.00th=[ 464], | 70.00th=[ 584], 80.00th=[ 709], 90.00th=[ 936], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1709, max= 4087, per=58.84%, avg=2509.00, stdev=1080.29, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=16.67%, 500=50.00%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.14%, ctx=144, 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=178180: Mon Aug 3 14:44:49 2026 read: IOPS=0, BW=991KiB/s (1015kB/s)(6144KiB/6199msec) clat (usec): min=525, max=452670, avg=206592.68, stdev=178613.48 lat (usec): min=526, max=452671, avg=206593.73, stdev=178613.66 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[206570], 50.00th=[206570], 60.00th=[278922], | 70.00th=[299893], 80.00th=[299893], 90.00th=[450888], 95.00th=[450888], | 99.00th=[450888], 99.50th=[450888], 99.90th=[450888], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 2019, max= 4087, per=99.53%, avg=3031.67, stdev=1034.66, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=991KiB/s (1015kB/s)(6144KiB/6199msec); 0 zone resets clat (msec): min=417, max=1474, avg=825.76, stdev=445.33 lat (msec): min=418, max=1474, avg=825.82, stdev=445.33 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 936], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1896, max= 2043, per=46.66%, avg=1989.50, stdev=65.13, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=16.67% lat (msec) : 250=8.33%, 500=50.00%, 1000=8.33%, 2000=16.67% cpu : usr=0.03%, sys=6.68%, ctx=143, 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=178181: Mon Aug 3 14:44:49 2026 read: IOPS=0, BW=915KiB/s (937kB/s)(5120KiB/5596msec) clat (usec): min=461, max=561766, avg=140899.41, stdev=241842.23 lat (usec): min=462, max=561767, avg=140900.65, stdev=241842.13 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 461], | 30.00th=[ 3032], 40.00th=[ 3032], 50.00th=[ 6652], 60.00th=[ 6652], | 70.00th=[132645], 80.00th=[132645], 90.00th=[557843], 95.00th=[557843], | 99.00th=[557843], 99.50th=[557843], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1281KiB/s (1312kB/s)(7168KiB/5596msec); 0 zone resets clat (msec): min=180, max=1649, avg=695.85, stdev=531.10 lat (msec): min=187, max=1649, avg=696.95, stdev=529.94 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 288], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 414], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 1099], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1481, max= 3442, per=49.58%, avg=2114.00, stdev=922.73, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 10=8.33%, 250=16.67%, 500=25.00%, 750=8.33% lat (msec) : 1000=8.33%, 2000=16.67% cpu : usr=0.00%, sys=5.79%, ctx=111, 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=3046KiB/s (3119kB/s), 305KiB/s-1379KiB/s (312kB/s-1412kB/s), io=20.0MiB (20.0MB), run=5198-6723msec WRITE: bw=4265KiB/s (4367kB/s), 985KiB/s-1523KiB/s (1009kB/s-1560kB/s), io=28.0MiB (29.4MB), run=5198-6723msec 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=178189: Mon Aug 3 14:45:12 2026 read: IOPS=0, BW=2206KiB/s (2259kB/s)(12.0MiB/5570msec) clat (msec): min=838, max=2214, avg=1691.27, stdev=745.27 lat (msec): min=838, max=2214, avg=1691.27, stdev=745.27 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 2022], 50.00th=[ 2022], 60.00th=[ 2022], | 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= 7968, max= 8126, per=100.00%, avg=8047.00, stdev=111.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.59%, ctx=86, 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=178190: Mon Aug 3 14:45:12 2026 read: IOPS=0, BW=838KiB/s (858kB/s)(4096KiB/4886msec) clat (nsec): min=1095.3M, max=1095.3M, avg=1095270328.00, stdev= 0.00 lat (nsec): min=1095.3M, max=1095.3M, avg=1095272527.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1099], 5.00th=[ 1099], 10.00th=[ 1099], 20.00th=[ 1099], | 30.00th=[ 1099], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 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= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1677KiB/s (1717kB/s)(8192KiB/4886msec); 0 zone resets clat (msec): min=1753, max=1764, avg=1759.21, stdev= 8.09 lat (msec): min=1756, max=1766, avg=1761.45, stdev= 6.45 clat percentiles (msec): | 1.00th=[ 1754], 5.00th=[ 1754], 10.00th=[ 1754], 20.00th=[ 1754], | 30.00th=[ 1754], 40.00th=[ 1754], 50.00th=[ 1754], 60.00th=[ 1770], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7922, max= 7922, per=100.00%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.50%, ctx=50, 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=178191: Mon Aug 3 14:45:12 2026 write: IOPS=0, BW=2745KiB/s (2811kB/s)(12.0MiB/4477msec); 0 zone resets clat (msec): min=567, max=2191, avg=1328.09, stdev=817.21 lat (msec): min=567, max=2196, avg=1329.70, stdev=819.24 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.30%, ctx=63, 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=178192: Mon Aug 3 14:45:12 2026 write: IOPS=0, BW=3945KiB/s (4039kB/s)(12.0MiB/3115msec); 0 zone resets clat (msec): min=402, max=1870, avg=937.05, stdev=811.38 lat (msec): min=403, max=1871, avg=937.48, stdev=811.26 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7460, max= 8047, per=100.00%, avg=7753.50, stdev=415.07, 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=0.10%, sys=3.63%, ctx=57, 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=2941KiB/s (3012kB/s), 838KiB/s-2206KiB/s (858kB/s-2259kB/s), io=16.0MiB (16.8MB), run=4886-5570msec WRITE: bw=6707KiB/s (6867kB/s), 1677KiB/s-3945KiB/s (1717kB/s-4039kB/s), io=32.0MiB (33.6MB), run=3115-4886msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178194: Mon Aug 3 14:45:13 2026 read: IOPS=0, BW=3612KiB/s (3699kB/s)(12.0MiB/3402msec) clat (msec): min=979, max=1323, avg=1133.81, stdev=174.45 lat (msec): min=979, max=1323, avg=1133.81, stdev=174.45 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, 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=0.24%, sys=8.85%, ctx=287, 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=178195: Mon Aug 3 14:45:13 2026 read: IOPS=0, BW=905KiB/s (927kB/s)(4096KiB/4525msec) clat (nsec): min=938566k, max=938566k, avg=938566434.00, stdev= 0.00 lat (nsec): min=938568k, max=938568k, avg=938567736.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1810KiB/s (1854kB/s)(8192KiB/4525msec); 0 zone resets clat (msec): min=816, max=2761, avg=1788.91, stdev=1375.81 lat (msec): min=816, max=2766, avg=1791.49, stdev=1378.99 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 2769], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.58%, ctx=78, 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=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=178196: Mon Aug 3 14:45:13 2026 write: IOPS=0, BW=2781KiB/s (2848kB/s)(12.0MiB/4418msec); 0 zone resets clat (msec): min=487, max=2248, avg=1427.53, stdev=886.38 lat (msec): min=494, max=2248, avg=1430.02, stdev=882.95 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7876, max= 8159, per=100.00%, avg=8017.50, stdev=200.11, 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=1.90%, ctx=45, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178197: Mon Aug 3 14:45:13 2026 write: IOPS=0, BW=3353KiB/s (3433kB/s)(12.0MiB/3665msec); 0 zone resets clat (msec): min=545, max=1799, avg=1211.17, stdev=630.83 lat (msec): min=545, max=1801, avg=1211.98, stdev=631.55 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8078, max= 8110, per=100.00%, avg=8094.00, stdev=22.63, 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=3.28%, ctx=60, 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=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=3621KiB/s (3708kB/s), 905KiB/s-3612KiB/s (927kB/s-3699kB/s), io=16.0MiB (16.8MB), run=3402-4525msec WRITE: bw=7242KiB/s (7415kB/s), 1810KiB/s-3353KiB/s (1854kB/s-3433kB/s), io=32.0MiB (33.6MB), run=3665-4525msec