== sanity test 398b: DIO and buffer IO race ============== 02:07:58 (1788934078) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.47537 s, 6.7 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=144375: Wed Sep 9 02:10:09 2026 read: IOPS=13, BW=54.9KiB/s (56.3kB/s)(5992KiB/109052msec) clat (usec): min=34, max=350083, avg=34510.97, stdev=26154.32 lat (usec): min=35, max=350084, avg=34512.28, stdev=26154.36 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 65], 10.00th=[ 652], 20.00th=[ 16450], | 30.00th=[ 20841], 40.00th=[ 24773], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 41681], 80.00th=[ 51119], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[121111], 99.50th=[141558], 99.90th=[193987], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 127, per=25.32%, avg=54.93, stdev=21.98, samples=213 iops : min= 1, max= 31, avg=13.10, stdev= 5.53, samples=213 write: IOPS=14, BW=57.7KiB/s (59.1kB/s)(6296KiB/109052msec); 0 zone resets clat (usec): min=762, max=962654, avg=36148.18, stdev=44361.38 lat (usec): min=764, max=962655, avg=36150.64, stdev=44361.95 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1467], 20.00th=[ 4228], | 30.00th=[ 8848], 40.00th=[ 17433], 50.00th=[ 26346], 60.00th=[ 35390], | 70.00th=[ 44303], 80.00th=[ 58983], 90.00th=[ 86508], 95.00th=[104334], | 99.00th=[175113], 99.50th=[196084], 99.90th=[400557], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 7, max= 126, per=25.20%, avg=57.46, stdev=22.85, samples=214 iops : min= 1, max= 31, avg=13.75, stdev= 5.75, samples=214 lat (usec) : 50=0.29%, 100=3.87%, 250=0.49%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.39% lat (msec) : 2=6.41%, 4=3.35%, 10=6.64%, 20=14.03%, 50=41.34% lat (msec) : 100=18.95%, 250=3.87%, 500=0.10%, 1000=0.03% cpu : usr=0.10%, sys=5.74%, ctx=6505, 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=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=144376: Wed Sep 9 02:10:09 2026 read: IOPS=13, BW=54.4KiB/s (55.7kB/s)(5940KiB/109216msec) clat (usec): min=30, max=989299, avg=36083.35, stdev=36326.17 lat (usec): min=30, max=989300, avg=36085.25, stdev=36326.66 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 7242], 20.00th=[ 16450], | 30.00th=[ 21103], 40.00th=[ 25035], 50.00th=[ 30540], 60.00th=[ 36439], | 70.00th=[ 43779], 80.00th=[ 52167], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[132645], 99.50th=[156238], 99.90th=[329253], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 127, per=24.97%, avg=54.18, stdev=23.57, samples=214 iops : min= 1, max= 31, avg=12.92, stdev= 5.93, samples=214 write: IOPS=14, BW=58.1KiB/s (59.5kB/s)(6348KiB/109216msec); 0 zone resets clat (usec): min=842, max=293790, avg=34777.73, stdev=36013.54 lat (usec): min=843, max=293791, avg=34780.63, stdev=36014.05 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1221], 10.00th=[ 1401], 20.00th=[ 3523], | 30.00th=[ 7570], 40.00th=[ 16319], 50.00th=[ 25560], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[102237], | 99.00th=[152044], 99.50th=[181404], 99.90th=[283116], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 126, per=25.30%, avg=57.69, stdev=23.25, samples=214 iops : min= 1, max= 31, avg=13.80, stdev= 5.86, samples=214 lat (usec) : 50=0.39%, 100=3.91%, 250=0.33%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=6.90%, 4=3.94%, 10=6.87%, 20=13.35%, 50=39.19% lat (msec) : 100=21.03%, 250=3.52%, 500=0.16%, 1000=0.03% cpu : usr=0.09%, sys=5.65%, ctx=6411, 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=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=144377: Wed Sep 9 02:10:09 2026 read: IOPS=13, BW=54.7KiB/s (56.0kB/s)(6028KiB/110190msec) clat (usec): min=28, max=150201, avg=34636.55, stdev=24685.91 lat (usec): min=29, max=150203, avg=34638.49, stdev=24685.56 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 9896], 20.00th=[ 16909], | 30.00th=[ 20579], 40.00th=[ 24773], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 42206], 80.00th=[ 51643], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[122160], 99.50th=[135267], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 7, max= 166, per=25.15%, avg=54.57, stdev=24.05, samples=215 iops : min= 1, max= 41, avg=13.01, stdev= 6.05, samples=215 write: IOPS=14, BW=56.8KiB/s (58.2kB/s)(6260KiB/110190msec); 0 zone resets clat (usec): min=722, max=977320, avg=36797.01, stdev=44340.68 lat (usec): min=723, max=977321, avg=36799.87, stdev=44341.21 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1237], 10.00th=[ 1663], 20.00th=[ 3982], | 30.00th=[ 8160], 40.00th=[ 17433], 50.00th=[ 27395], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 62653], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[168821], 99.50th=[210764], 99.90th=[337642], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 166, per=24.69%, avg=56.28, stdev=21.51, samples=216 iops : min= 1, max= 41, avg=13.45, stdev= 5.42, samples=216 lat (usec) : 50=0.49%, 100=3.29%, 250=0.29%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.42% lat (msec) : 2=5.60%, 4=4.33%, 10=7.13%, 20=14.16%, 50=39.19% lat (msec) : 100=20.93%, 250=3.91%, 500=0.10%, 1000=0.03% cpu : usr=0.10%, sys=5.54%, ctx=6482, 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=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=144378: Wed Sep 9 02:10:09 2026 read: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6052KiB/108882msec) clat (usec): min=33, max=975243, avg=35532.80, stdev=35510.92 lat (usec): min=33, max=975245, avg=35534.16, stdev=35511.24 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 139], 20.00th=[ 15926], | 30.00th=[ 20317], 40.00th=[ 24773], 50.00th=[ 29492], 60.00th=[ 35914], | 70.00th=[ 43254], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[125305], 99.50th=[141558], 99.90th=[227541], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 125, per=25.52%, avg=55.38, stdev=21.74, samples=212 iops : min= 1, max= 31, avg=13.23, stdev= 5.46, samples=212 write: IOPS=14, BW=57.3KiB/s (58.6kB/s)(6236KiB/108882msec); 0 zone resets clat (usec): min=711, max=337987, avg=35083.32, stdev=36650.91 lat (usec): min=711, max=337988, avg=35090.66, stdev=36646.91 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1221], 10.00th=[ 1352], 20.00th=[ 3359], | 30.00th=[ 6849], 40.00th=[ 16712], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 80217], 95.00th=[101188], | 99.00th=[158335], 99.50th=[196084], 99.90th=[320865], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 127, per=24.92%, avg=56.83, stdev=21.49, samples=213 iops : min= 1, max= 31, avg=13.59, stdev= 5.40, samples=213 lat (usec) : 50=0.78%, 100=4.07%, 250=0.20%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=7.13%, 4=4.23%, 10=6.28%, 20=13.64%, 50=38.54% lat (msec) : 100=21.06%, 250=3.68%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=5.69%, ctx=6354, 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=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=218KiB/s (223kB/s), 54.4KiB/s-55.6KiB/s (55.7kB/s-56.9kB/s), io=23.4MiB (24.6MB), run=108882-110190msec WRITE: bw=228KiB/s (234kB/s), 56.8KiB/s-58.1KiB/s (58.2kB/s-59.5kB/s), io=24.6MiB (25.7MB), run=108882-110190msec fio: pid=144380, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=144380: Wed Sep 9 02:12:04 2026 read: IOPS=5, BW=22.3KiB/s (22.8kB/s)(3532KiB/158447msec) clat (msec): min=5, max=1024, avg=39.15, stdev=51.67 lat (msec): min=5, max=1024, avg=39.15, stdev=51.67 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 79], 95.00th=[ 99], | 99.00th=[ 251], 99.50th=[ 317], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 80, per=25.46%, avg=24.44, stdev=16.07, samples=278 iops : min= 1, max= 20, avg= 5.48, stdev= 4.05, samples=278 write: IOPS=5, BW=23.4KiB/s (23.9kB/s)(3704KiB/158447msec); 0 zone resets clat (msec): min=37, max=440, avg=133.67, stdev=59.03 lat (msec): min=37, max=440, avg=133.67, stdev=59.03 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 111], 50.00th=[ 125], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 176], 90.00th=[ 211], 95.00th=[ 245], | 99.00th=[ 326], 99.50th=[ 355], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 48, per=23.20%, avg=23.20, stdev=10.51, samples=307 iops : min= 1, max= 12, avg= 5.15, stdev= 2.68, samples=307 lat (msec) : 10=2.98%, 20=14.53%, 50=20.33%, 100=24.86%, 250=34.42% lat (msec) : 500=2.76%, 2000=0.06% cpu : usr=0.04%, sys=1.16%, ctx=2889, majf=0, minf=20 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=884,926,0,0 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=144381: Wed Sep 9 02:12:04 2026 read: IOPS=6, BW=26.6KiB/s (27.3kB/s)(5940KiB/222916msec) clat (msec): min=4, max=978, avg=30.03, stdev=38.08 lat (msec): min=4, max=978, avg=30.03, stdev=38.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 65], 95.00th=[ 87], | 99.00th=[ 136], 99.50th=[ 180], 99.90th=[ 330], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 119, per=29.42%, avg=28.24, stdev=19.15, samples=407 iops : min= 1, max= 29, avg= 6.43, stdev= 4.83, samples=407 write: IOPS=7, BW=28.5KiB/s (29.2kB/s)(6348KiB/222916msec); 0 zone resets clat (msec): min=31, max=445, avg=112.30, stdev=52.91 lat (msec): min=31, max=445, avg=112.31, stdev=52.92 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 51], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 101], 60.00th=[ 112], | 70.00th=[ 127], 80.00th=[ 150], 90.00th=[ 184], 95.00th=[ 213], | 99.00th=[ 275], 99.50th=[ 326], 99.90th=[ 397], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 64, per=28.10%, avg=28.10, stdev=12.52, samples=437 iops : min= 1, max= 16, avg= 6.40, stdev= 3.19, samples=437 lat (msec) : 10=5.96%, 20=19.73%, 50=18.00%, 100=29.07%, 250=26.04% lat (msec) : 500=1.17%, 1000=0.03% cpu : usr=0.05%, sys=1.28%, ctx=5381, 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=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=144382: Wed Sep 9 02:12:04 2026 read: IOPS=6, BW=26.9KiB/s (27.5kB/s)(6028KiB/224360msec) clat (msec): min=5, max=400, avg=30.77, stdev=33.73 lat (msec): min=5, max=400, avg=30.77, stdev=33.73 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 42], 90.00th=[ 67], 95.00th=[ 92], | 99.00th=[ 171], 99.50th=[ 243], 99.90th=[ 317], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 136, per=29.67%, avg=28.48, stdev=19.04, samples=410 iops : min= 1, max= 34, avg= 6.50, stdev= 4.82, samples=410 write: IOPS=6, BW=27.9KiB/s (28.6kB/s)(6260KiB/224360msec); 0 zone resets clat (msec): min=32, max=1253, avg=113.66, stdev=60.97 lat (msec): min=32, max=1253, avg=113.66, stdev=60.97 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 51], 10.00th=[ 58], 20.00th=[ 70], | 30.00th=[ 81], 40.00th=[ 91], 50.00th=[ 102], 60.00th=[ 114], | 70.00th=[ 128], 80.00th=[ 148], 90.00th=[ 186], 95.00th=[ 222], | 99.00th=[ 288], 99.50th=[ 305], 99.90th=[ 485], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 79, per=27.59%, avg=27.59, stdev=12.97, samples=439 iops : min= 1, max= 19, avg= 6.27, stdev= 3.30, samples=439 lat (msec) : 10=6.64%, 20=18.85%, 50=17.94%, 100=28.68%, 250=26.43% lat (msec) : 500=1.43%, 2000=0.03% cpu : usr=0.04%, sys=1.26%, ctx=5222, 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=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=144383: Wed Sep 9 02:12:04 2026 read: IOPS=6, BW=27.1KiB/s (27.8kB/s)(6052KiB/223226msec) clat (msec): min=4, max=432, avg=29.33, stdev=34.05 lat (msec): min=4, max=432, avg=29.33, stdev=34.05 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 62], 95.00th=[ 86], | 99.00th=[ 163], 99.50th=[ 251], 99.90th=[ 409], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 120, per=30.92%, avg=29.68, stdev=19.80, samples=396 iops : min= 1, max= 30, avg= 6.80, stdev= 5.01, samples=396 write: IOPS=6, BW=27.9KiB/s (28.6kB/s)(6236KiB/223226msec); 0 zone resets clat (msec): min=31, max=1070, avg=114.66, stdev=60.46 lat (msec): min=31, max=1070, avg=114.67, stdev=60.46 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 89], 50.00th=[ 101], 60.00th=[ 114], | 70.00th=[ 130], 80.00th=[ 150], 90.00th=[ 188], 95.00th=[ 226], | 99.00th=[ 300], 99.50th=[ 338], 99.90th=[ 518], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 56, per=27.71%, avg=27.71, stdev=12.40, samples=436 iops : min= 1, max= 14, avg= 6.30, stdev= 3.16, samples=436 lat (msec) : 10=6.45%, 20=20.44%, 50=17.25%, 100=28.61%, 250=25.59% lat (msec) : 500=1.60%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.30%, ctx=5335, 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=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=96.1KiB/s (98.4kB/s), 22.3KiB/s-27.1KiB/s (22.8kB/s-27.8kB/s), io=21.0MiB (22.1MB), run=158447-224360msec WRITE: bw=100KiB/s (103kB/s), 23.4KiB/s-28.5KiB/s (23.9kB/s-29.2kB/s), io=22.0MiB (23.1MB), run=158447-224360msec 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=144430: Wed Sep 9 02:12:36 2026 read: IOPS=16, BW=269KiB/s (276kB/s)(5920KiB/21979msec) clat (usec): min=24, max=173918, avg=30570.04, stdev=26143.39 lat (usec): min=24, max=173918, avg=30572.96, stdev=26141.28 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 73], | 30.00th=[ 16909], 40.00th=[ 22676], 50.00th=[ 28443], 60.00th=[ 34866], | 70.00th=[ 41681], 80.00th=[ 50594], 90.00th=[ 61604], 95.00th=[ 73925], | 99.00th=[106431], 99.50th=[164627], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 94, max= 539, per=24.97%, avg=267.14, stdev=86.73, samples=43 iops : min= 5, max= 33, avg=15.95, stdev= 5.47, samples=43 write: IOPS=18, BW=290KiB/s (297kB/s)(6368KiB/21979msec); 0 zone resets clat (usec): min=973, max=144478, avg=26268.75, stdev=26610.37 lat (usec): min=975, max=144480, avg=26291.20, stdev=26627.77 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1663], 10.00th=[ 2057], 20.00th=[ 3687], | 30.00th=[ 6325], 40.00th=[ 10945], 50.00th=[ 18482], 60.00th=[ 26346], | 70.00th=[ 33424], 80.00th=[ 44827], 90.00th=[ 63701], 95.00th=[ 77071], | 99.00th=[121111], 99.50th=[139461], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 63, max= 504, per=25.61%, avg=288.37, stdev=93.52, samples=43 iops : min= 3, max= 31, avg=17.30, stdev= 5.91, samples=43 lat (usec) : 50=1.95%, 100=9.24%, 250=0.78%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=5.21%, 4=6.38%, 10=9.24%, 20=10.68%, 50=37.24% lat (msec) : 100=17.19%, 250=1.69% cpu : usr=0.08%, sys=6.95%, ctx=1415, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144431: Wed Sep 9 02:12:36 2026 read: IOPS=16, BW=257KiB/s (263kB/s)(5744KiB/22368msec) clat (usec): min=38, max=157523, avg=29834.72, stdev=25411.42 lat (usec): min=38, max=157523, avg=29835.81, stdev=25411.42 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 75], | 30.00th=[ 17433], 40.00th=[ 22938], 50.00th=[ 27657], 60.00th=[ 33817], | 70.00th=[ 40633], 80.00th=[ 49021], 90.00th=[ 61080], 95.00th=[ 71828], | 99.00th=[108528], 99.50th=[139461], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 61, max= 471, per=23.81%, avg=254.82, stdev=96.93, samples=44 iops : min= 3, max= 29, avg=15.16, stdev= 6.11, samples=44 write: IOPS=18, BW=293KiB/s (300kB/s)(6544KiB/22368msec); 0 zone resets clat (usec): min=1192, max=169235, avg=28071.07, stdev=29336.81 lat (usec): min=1193, max=169238, avg=28075.32, stdev=29335.18 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1713], 10.00th=[ 1975], 20.00th=[ 3785], | 30.00th=[ 5866], 40.00th=[ 9634], 50.00th=[ 16581], 60.00th=[ 25822], | 70.00th=[ 38011], 80.00th=[ 53740], 90.00th=[ 69731], 95.00th=[ 81265], | 99.00th=[121111], 99.50th=[137364], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 155, max= 541, per=25.93%, avg=291.98, stdev=101.13, samples=44 iops : min= 9, max= 33, avg=17.52, stdev= 6.38, samples=44 lat (usec) : 50=1.56%, 100=9.64%, 250=0.65% lat (msec) : 2=5.47%, 4=6.12%, 10=11.07%, 20=10.03%, 50=34.64% lat (msec) : 100=18.62%, 250=2.21% cpu : usr=0.07%, sys=6.82%, ctx=1379, 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=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=144432: Wed Sep 9 02:12:36 2026 read: IOPS=17, BW=282KiB/s (289kB/s)(6256KiB/22161msec) clat (usec): min=39, max=177641, avg=29847.86, stdev=26303.49 lat (usec): min=39, max=177642, avg=29852.70, stdev=26304.53 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 77], | 30.00th=[ 14222], 40.00th=[ 22676], 50.00th=[ 27132], 60.00th=[ 33817], | 70.00th=[ 42206], 80.00th=[ 50594], 90.00th=[ 60556], 95.00th=[ 74974], | 99.00th=[103285], 99.50th=[147850], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 125, max= 666, per=26.41%, avg=282.60, stdev=107.92, samples=43 iops : min= 7, max= 41, avg=16.91, stdev= 6.76, samples=43 write: IOPS=17, BW=272KiB/s (279kB/s)(6032KiB/22161msec); 0 zone resets clat (usec): min=1390, max=153826, avg=27623.11, stdev=28778.72 lat (usec): min=1392, max=153828, avg=27672.13, stdev=28750.43 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1745], 10.00th=[ 2278], 20.00th=[ 4146], | 30.00th=[ 6980], 40.00th=[ 10159], 50.00th=[ 16057], 60.00th=[ 25560], | 70.00th=[ 34866], 80.00th=[ 49021], 90.00th=[ 67634], 95.00th=[ 86508], | 99.00th=[123208], 99.50th=[147850], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 94, max= 761, per=23.91%, avg=269.21, stdev=131.33, samples=43 iops : min= 5, max= 47, avg=16.09, stdev= 8.28, samples=43 lat (usec) : 50=1.95%, 100=10.94%, 250=0.78%, 500=0.13% lat (msec) : 2=3.78%, 4=5.99%, 10=10.16%, 20=10.68%, 50=35.16% lat (msec) : 100=18.49%, 250=1.95% cpu : usr=0.15%, sys=7.05%, ctx=1426, 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=144433: Wed Sep 9 02:12:36 2026 read: IOPS=17, BW=282KiB/s (289kB/s)(6032KiB/21370msec) clat (usec): min=35, max=171457, avg=29232.74, stdev=26651.63 lat (usec): min=35, max=171458, avg=29233.94, stdev=26651.62 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 49], 10.00th=[ 64], 20.00th=[ 76], | 30.00th=[ 14353], 40.00th=[ 20841], 50.00th=[ 26346], 60.00th=[ 32637], | 70.00th=[ 39584], 80.00th=[ 48497], 90.00th=[ 60556], 95.00th=[ 79168], | 99.00th=[117965], 99.50th=[143655], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 157, max= 505, per=26.04%, avg=278.62, stdev=92.53, samples=42 iops : min= 9, max= 31, avg=16.69, stdev= 5.84, samples=42 write: IOPS=18, BW=293KiB/s (300kB/s)(6256KiB/21370msec); 0 zone resets clat (usec): min=1237, max=143874, avg=26097.61, stdev=27453.85 lat (usec): min=1239, max=143876, avg=26099.84, stdev=27454.35 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 2212], 20.00th=[ 3621], | 30.00th=[ 6325], 40.00th=[ 8848], 50.00th=[ 13566], 60.00th=[ 23987], | 70.00th=[ 32900], 80.00th=[ 49546], 90.00th=[ 69731], 95.00th=[ 82314], | 99.00th=[113771], 99.50th=[119014], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 156, max= 569, per=25.96%, avg=292.26, stdev=92.53, samples=42 iops : min= 9, max= 35, avg=17.55, stdev= 5.82, samples=42 lat (usec) : 50=2.73%, 100=9.64%, 250=0.65% lat (msec) : 2=4.95%, 4=6.51%, 10=11.85%, 20=10.68%, 50=33.33% lat (msec) : 100=17.97%, 250=1.69% cpu : usr=0.07%, sys=6.72%, ctx=1309, 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=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=1071KiB/s (1097kB/s), 257KiB/s-282KiB/s (263kB/s-289kB/s), io=23.4MiB (24.5MB), run=21370-22368msec WRITE: bw=1127KiB/s (1154kB/s), 272KiB/s-293KiB/s (279kB/s-300kB/s), io=24.6MiB (25.8MB), run=21370-22368msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144435: Wed Sep 9 02:13:11 2026 read: IOPS=6, BW=105KiB/s (107kB/s)(5920KiB/56536msec) clat (msec): min=7, max=297, avg=31.89, stdev=33.40 lat (msec): min=7, max=297, avg=31.89, stdev=33.40 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 64], 95.00th=[ 81], | 99.00th=[ 186], 99.50th=[ 234], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 410, per=26.12%, avg=110.49, stdev=63.24, samples=106 iops : min= 1, max= 25, avg= 6.21, stdev= 4.01, samples=106 write: IOPS=7, BW=113KiB/s (115kB/s)(6368KiB/56536msec); 0 zone resets clat (msec): min=30, max=316, avg=112.24, stdev=48.02 lat (msec): min=30, max=316, avg=112.25, stdev=48.02 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 52], 10.00th=[ 58], 20.00th=[ 71], | 30.00th=[ 81], 40.00th=[ 92], 50.00th=[ 106], 60.00th=[ 115], | 70.00th=[ 130], 80.00th=[ 150], 90.00th=[ 178], 95.00th=[ 205], | 99.00th=[ 255], 99.50th=[ 275], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 288, per=25.46%, avg=113.30, stdev=48.47, samples=111 iops : min= 1, max= 18, avg= 6.37, stdev= 3.12, samples=111 lat (msec) : 10=2.73%, 20=18.49%, 50=22.14%, 100=27.34%, 250=28.52% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.38%, ctx=1313, 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=144436: Wed Sep 9 02:13:11 2026 read: IOPS=6, BW=103KiB/s (105kB/s)(5744KiB/55968msec) clat (msec): min=6, max=234, avg=31.43, stdev=29.85 lat (msec): min=6, max=234, avg=31.43, stdev=29.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 63], 95.00th=[ 100], | 99.00th=[ 153], 99.50th=[ 186], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 29, max= 384, per=28.00%, avg=118.45, stdev=72.63, samples=95 iops : min= 1, max= 24, avg= 6.69, stdev= 4.64, samples=95 write: IOPS=7, BW=117KiB/s (120kB/s)(6544KiB/55968msec); 0 zone resets clat (msec): min=39, max=313, avg=109.10, stdev=47.77 lat (msec): min=39, max=313, avg=109.10, stdev=47.77 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 70], | 30.00th=[ 79], 40.00th=[ 87], 50.00th=[ 99], 60.00th=[ 111], | 70.00th=[ 123], 80.00th=[ 146], 90.00th=[ 178], 95.00th=[ 197], | 99.00th=[ 262], 99.50th=[ 292], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 224, per=26.39%, avg=117.43, stdev=48.17, samples=109 iops : min= 1, max= 14, avg= 6.62, stdev= 3.11, samples=109 lat (msec) : 10=3.52%, 20=17.06%, 50=21.48%, 100=30.34%, 250=26.82% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.42%, ctx=1336, 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=144437: Wed Sep 9 02:13:11 2026 read: IOPS=7, BW=116KiB/s (118kB/s)(6256KiB/54114msec) clat (msec): min=5, max=221, avg=28.99, stdev=25.76 lat (msec): min=5, max=221, avg=28.99, stdev=25.76 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 56], 95.00th=[ 79], | 99.00th=[ 140], 99.50th=[ 192], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 411, per=28.44%, avg=120.29, stdev=80.36, samples=103 iops : min= 1, max= 25, avg= 6.80, stdev= 5.11, samples=103 write: IOPS=6, BW=111KiB/s (114kB/s)(6032KiB/54114msec); 0 zone resets clat (msec): min=35, max=402, avg=113.32, stdev=50.77 lat (msec): min=35, max=402, avg=113.32, stdev=50.77 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 62], 20.00th=[ 73], | 30.00th=[ 83], 40.00th=[ 92], 50.00th=[ 103], 60.00th=[ 116], | 70.00th=[ 133], 80.00th=[ 150], 90.00th=[ 176], 95.00th=[ 197], | 99.00th=[ 300], 99.50th=[ 355], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 30, max= 223, per=24.94%, avg=111.00, stdev=44.02, samples=107 iops : min= 1, max= 13, avg= 6.21, stdev= 2.82, samples=107 lat (msec) : 10=3.52%, 20=19.53%, 50=23.44%, 100=26.69%, 250=25.78% lat (msec) : 500=1.04% cpu : usr=0.06%, sys=1.43%, ctx=1336, 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=144438: Wed Sep 9 02:13:11 2026 read: IOPS=6, BW=108KiB/s (111kB/s)(6032KiB/55796msec) clat (msec): min=6, max=241, avg=30.73, stdev=29.78 lat (msec): min=6, max=241, avg=30.73, stdev=29.77 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 40], 90.00th=[ 64], 95.00th=[ 94], | 99.00th=[ 167], 99.50th=[ 220], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 349, per=27.31%, avg=115.51, stdev=72.51, samples=102 iops : min= 1, max= 21, avg= 6.49, stdev= 4.61, samples=102 write: IOPS=7, BW=112KiB/s (115kB/s)(6256KiB/55796msec); 0 zone resets clat (msec): min=37, max=324, avg=112.85, stdev=50.02 lat (msec): min=37, max=324, avg=112.86, stdev=50.02 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 88], 50.00th=[ 102], 60.00th=[ 116], | 70.00th=[ 129], 80.00th=[ 150], 90.00th=[ 184], 95.00th=[ 211], | 99.00th=[ 266], 99.50th=[ 296], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 28, max= 224, per=25.17%, avg=112.00, stdev=44.42, samples=110 iops : min= 1, max= 14, avg= 6.28, stdev= 2.88, samples=110 lat (msec) : 10=3.78%, 20=19.92%, 50=19.27%, 100=28.91%, 250=27.21% lat (msec) : 500=0.91% cpu : usr=0.03%, sys=1.45%, ctx=1267, 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=424KiB/s (434kB/s), 103KiB/s-116KiB/s (105kB/s-118kB/s), io=23.4MiB (24.5MB), run=54114-56536msec WRITE: bw=446KiB/s (456kB/s), 111KiB/s-117KiB/s (114kB/s-120kB/s), io=24.6MiB (25.8MB), run=54114-56536msec 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=144454: Wed Sep 9 02:13:32 2026 read: IOPS=1, BW=1188KiB/s (1217kB/s)(7168KiB/6032msec) clat (usec): min=473, max=2992.3k, avg=551253.92, stdev=1082507.89 lat (usec): min=475, max=2992.3k, avg=551255.62, stdev=1082507.85 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], | 20.00th=[ 570], 30.00th=[ 103285], 40.00th=[ 103285], | 50.00th=[ 242222], 60.00th=[ 258999], 70.00th=[ 258999], | 80.00th=[ 261096], 90.00th=[3003122], 95.00th=[3003122], | 99.00th=[3003122], 99.50th=[3003122], 99.90th=[3003122], | 99.95th=[3003122], 99.99th=[3003122] bw ( KiB/s): min= 1855, max= 4079, per=100.00%, avg=2482.25, stdev=1066.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=849KiB/s (869kB/s)(5120KiB/6032msec); 0 zone resets clat (msec): min=229, max=822, avg=403.26, stdev=241.34 lat (msec): min=229, max=822, avg=403.33, stdev=241.34 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 363], 80.00th=[ 363], 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= 1984, max= 2043, per=59.12%, avg=2022.00, stdev=32.97, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.91%, ctx=645, 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=144455: Wed Sep 9 02:13:32 2026 read: IOPS=0, BW=244KiB/s (250kB/s)(2048KiB/8382msec) clat (msec): min=276, max=481, avg=378.95, stdev=145.57 lat (msec): min=276, max=481, avg=378.95, stdev=145.57 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=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 1885, max= 2019, per=79.90%, avg=1952.00, stdev=94.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1222KiB/s (1251kB/s)(10.0MiB/8382msec); 0 zone resets clat (msec): min=106, max=3230, avg=744.76, stdev=911.16 lat (msec): min=106, max=3230, avg=744.84, stdev=911.17 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 176], | 30.00th=[ 305], 40.00th=[ 321], 50.00th=[ 426], 60.00th=[ 558], | 70.00th=[ 651], 80.00th=[ 726], 90.00th=[ 953], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1889, max= 4079, per=74.64%, avg=2552.71, stdev=1007.26, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.38%, ctx=136, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144456: Wed Sep 9 02:13:32 2026 read: IOPS=0, BW=877KiB/s (899kB/s)(6144KiB/7002msec) clat (usec): min=571, max=486996, avg=216174.99, stdev=175152.61 lat (usec): min=572, max=486998, avg=216176.27, stdev=175152.70 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 62653], | 30.00th=[ 62653], 40.00th=[206570], 50.00th=[206570], 60.00th=[225444], | 70.00th=[316670], 80.00th=[316670], 90.00th=[488637], 95.00th=[488637], | 99.00th=[488637], 99.50th=[488637], 99.90th=[488637], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 2031, max= 4087, per=100.00%, avg=3399.00, stdev=1184.73, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=877KiB/s (899kB/s)(6144KiB/7002msec); 0 zone resets clat (msec): min=243, max=3316, avg=938.70, stdev=1207.79 lat (msec): min=243, max=3316, avg=938.78, stdev=1207.78 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 380], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 1896, max= 2730, per=62.87%, avg=2150.20, stdev=330.20, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.44%, ctx=136, 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=144457: Wed Sep 9 02:13:32 2026 read: IOPS=0, BW=852KiB/s (873kB/s)(5120KiB/6008msec) clat (usec): min=396, max=359403, avg=82761.61, stdev=155720.99 lat (usec): min=398, max=359404, avg=82762.70, stdev=155721.10 clat percentiles (usec): | 1.00th=[ 396], 5.00th=[ 396], 10.00th=[ 396], 20.00th=[ 396], | 30.00th=[ 2573], 40.00th=[ 2573], 50.00th=[ 6456], 60.00th=[ 6456], | 70.00th=[ 44827], 80.00th=[ 44827], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1193KiB/s (1222kB/s)(7168KiB/6008msec); 0 zone resets clat (msec): min=169, max=3354, avg=794.35, stdev=1154.65 lat (msec): min=169, max=3354, avg=794.42, stdev=1154.65 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 194], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 266], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 877], 90.00th=[ 3339], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 1882, max= 3968, per=70.01%, avg=2394.20, stdev=882.45, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 10=8.33%, 50=8.33%, 250=16.67%, 500=33.33% lat (msec) : 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=6.81%, ctx=88, 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=2443KiB/s (2502kB/s), 244KiB/s-1188KiB/s (250kB/s-1217kB/s), io=20.0MiB (20.0MB), run=6008-8382msec WRITE: bw=3421KiB/s (3503kB/s), 849KiB/s-1222KiB/s (869kB/s-1251kB/s), io=28.0MiB (29.4MB), run=6008-8382msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144459: Wed Sep 9 02:13:33 2026 read: IOPS=0, BW=885KiB/s (906kB/s)(7168KiB/8098msec) clat (msec): min=78, max=2787, avg=847.19, stdev=971.80 lat (msec): min=78, max=2787, avg=847.19, stdev=971.80 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 161], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 584], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 1418], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 1932, max= 2048, per=82.13%, avg=2011.40, stdev=46.33, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=632KiB/s (647kB/s)(5120KiB/8098msec); 0 zone resets clat (msec): min=172, max=617, avg=403.79, stdev=165.07 lat (msec): min=172, max=617, avg=403.89, stdev=165.06 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2035, max= 2048, per=59.57%, avg=2042.00, stdev= 6.56, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=25.00%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.04%, sys=1.36%, ctx=57, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144460: Wed Sep 9 02:13:33 2026 read: IOPS=0, BW=245KiB/s (251kB/s)(2048KiB/8362msec) clat (msec): min=158, max=174, avg=166.50, stdev=11.27 lat (msec): min=158, max=174, avg=166.50, stdev=11.27 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 176], | 70.00th=[ 176], 80.00th=[ 176], 90.00th=[ 176], 95.00th=[ 176], | 99.00th=[ 176], 99.50th=[ 176], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 1885, max= 2035, per=80.03%, avg=1960.00, stdev=106.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1225KiB/s (1254kB/s)(10.0MiB/8362msec); 0 zone resets clat (msec): min=193, max=3509, avg=791.46, stdev=996.24 lat (msec): min=193, max=3509, avg=791.55, stdev=996.23 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 241], | 30.00th=[ 259], 40.00th=[ 359], 50.00th=[ 393], 60.00th=[ 506], | 70.00th=[ 600], 80.00th=[ 709], 90.00th=[ 1150], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 1932, max= 2048, per=59.05%, avg=2024.38, stdev=39.18, samples=8 iops : min= 1, max= 2, avg= 1.25, stdev= 0.46, samples=8 lat (msec) : 250=33.33%, 500=25.00%, 750=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.01%, ctx=87, 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=144461: Wed Sep 9 02:13:33 2026 read: IOPS=0, BW=806KiB/s (826kB/s)(6144KiB/7619msec) clat (msec): min=123, max=505, avg=271.60, stdev=137.59 lat (msec): min=123, max=505, avg=271.60, stdev=137.59 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 239], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1932, max= 4096, per=100.00%, avg=2518.50, stdev=1052.59, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=0, BW=806KiB/s (826kB/s)(6144KiB/7619msec); 0 zone resets clat (msec): min=230, max=3482, avg=971.38, stdev=1258.21 lat (msec): min=230, max=3482, avg=971.47, stdev=1258.21 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 701], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 1835, max= 2048, per=58.46%, avg=2004.17, stdev=84.12, samples=6 iops : min= 1, max= 2, avg= 1.50, stdev= 0.55, samples=6 lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=2.55%, 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=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=144462: Wed Sep 9 02:13:33 2026 read: IOPS=0, BW=643KiB/s (658kB/s)(5120KiB/7964msec) clat (msec): min=128, max=374, avg=264.22, stdev=113.10 lat (msec): min=128, max=374, avg=264.23, stdev=113.10 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 129], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 4071, max= 4096, per=100.00%, avg=4083.50, stdev=17.68, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=900KiB/s (922kB/s)(7168KiB/7964msec); 0 zone resets clat (msec): min=362, max=3362, avg=930.15, stdev=1090.94 lat (msec): min=362, max=3362, avg=930.25, stdev=1090.91 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 368], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 481], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 936], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 1928, max= 2048, per=58.87%, avg=2018.00, stdev=46.02, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=16.67%, 500=58.33%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=2.61%, ctx=92, 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=2449KiB/s (2508kB/s), 245KiB/s-885KiB/s (251kB/s-906kB/s), io=20.0MiB (20.0MB), run=7619-8362msec WRITE: bw=3429KiB/s (3511kB/s), 632KiB/s-1225KiB/s (647kB/s-1254kB/s), io=28.0MiB (29.4MB), run=7619-8362msec 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=144469: Wed Sep 9 02:13:45 2026 read: IOPS=1, BW=5601KiB/s (5735kB/s)(12.0MiB/2194msec) clat (msec): min=610, max=800, avg=719.64, stdev=98.18 lat (msec): min=610, max=800, avg=719.64, stdev=98.18 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 802], 80.00th=[ 802], 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= 8078, max= 8175, per=100.00%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=12.54%, ctx=277, 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=144470: Wed Sep 9 02:13:45 2026 read: IOPS=0, BW=1492KiB/s (1527kB/s)(4096KiB/2746msec) clat (nsec): min=816362k, max=816362k, avg=816362434.00, stdev= 0.00 lat (nsec): min=816365k, max=816365k, avg=816365055.00, stdev= 0.00 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=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2983KiB/s (3055kB/s)(8192KiB/2746msec); 0 zone resets clat (msec): min=537, max=1306, avg=921.86, stdev=543.56 lat (msec): min=537, max=1306, avg=922.28, stdev=543.56 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8094, max= 8094, per=68.50%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.36%, ctx=140, 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=144471: Wed Sep 9 02:13:45 2026 write: IOPS=1, BW=4431KiB/s (4538kB/s)(12.0MiB/2773msec); 0 zone resets clat (msec): min=765, max=1008, avg=913.92, stdev=130.30 lat (msec): min=765, max=1009, avg=914.24, stdev=130.24 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 1011], 80.00th=[ 1011], 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= 8143, max= 8192, per=69.12%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.59%, ctx=58, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144472: Wed Sep 9 02:13:45 2026 write: IOPS=1, BW=5899KiB/s (6041kB/s)(12.0MiB/2083msec); 0 zone resets clat (msec): min=448, max=1062, avg=659.83, stdev=349.26 lat (msec): min=449, max=1063, avg=660.33, stdev=349.20 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 6977, max= 8175, per=64.12%, avg=7576.00, stdev=847.11, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.05%, sys=4.80%, ctx=47, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=5966KiB/s (6110kB/s), 1492KiB/s-5601KiB/s (1527kB/s-5735kB/s), io=16.0MiB (16.8MB), run=2194-2746msec WRITE: bw=11.5MiB/s (12.1MB/s), 2983KiB/s-5899KiB/s (3055kB/s-6041kB/s), io=32.0MiB (33.6MB), run=2083-2773msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144474: Wed Sep 9 02:13:45 2026 read: IOPS=1, BW=5211KiB/s (5336kB/s)(12.0MiB/2358msec) clat (msec): min=613, max=1113, avg=785.54, stdev=284.36 lat (msec): min=613, max=1113, avg=785.54, stdev=284.36 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8047, max= 8062, per=100.00%, avg=8054.50, stdev=10.61, 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=0.00%, sys=3.95%, ctx=56, 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=144475: Wed Sep 9 02:13:45 2026 read: IOPS=0, BW=1682KiB/s (1723kB/s)(4096KiB/2435msec) clat (nsec): min=917232k, max=917232k, avg=917232235.00, stdev= 0.00 lat (nsec): min=917234k, max=917234k, avg=917234268.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 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= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3364KiB/s (3445kB/s)(8192KiB/2435msec); 0 zone resets clat (msec): min=671, max=842, avg=756.73, stdev=121.21 lat (msec): min=671, max=842, avg=757.10, stdev=121.21 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8094, max= 8094, per=62.87%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.75%, ctx=53, 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=144476: Wed Sep 9 02:13:45 2026 write: IOPS=1, BW=4828KiB/s (4944kB/s)(12.0MiB/2545msec); 0 zone resets clat (msec): min=373, max=1365, avg=845.31, stdev=497.37 lat (msec): min=374, max=1366, avg=847.99, stdev=497.64 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8062, max= 8159, per=62.99%, avg=8110.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.73%, ctx=34, 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=144477: Wed Sep 9 02:13:45 2026 write: IOPS=1, BW=6888KiB/s (7053kB/s)(12.0MiB/1784msec); 0 zone resets clat (msec): min=274, max=1133, avg=593.89, stdev=470.05 lat (msec): min=275, max=1134, avg=594.28, stdev=470.06 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 5720, max= 8143, per=53.84%, avg=6931.50, stdev=1713.32, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.38%, ctx=70, 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=6729KiB/s (6890kB/s), 1682KiB/s-5211KiB/s (1723kB/s-5336kB/s), io=16.0MiB (16.8MB), run=2358-2435msec WRITE: bw=12.6MiB/s (13.2MB/s), 3364KiB/s-6888KiB/s (3445kB/s-7053kB/s), io=32.0MiB (33.6MB), run=1784-2545msec