== sanity test 398b: DIO and buffer IO race ============== 11:47:09 (1786204029) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.09937 s, 16.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=160450: Sat Aug 8 11:48:41 2026 read: IOPS=18, BW=73.0KiB/s (75.7kB/s)(5992KiB/81009msec) clat (usec): min=68, max=459490, avg=28922.48, stdev=17811.48 lat (usec): min=69, max=459492, avg=28923.14, stdev=17811.41 clat percentiles (usec): | 1.00th=[ 169], 5.00th=[ 10028], 10.00th=[ 13829], 20.00th=[ 17695], | 30.00th=[ 20841], 40.00th=[ 23987], 50.00th=[ 27395], 60.00th=[ 30540], | 70.00th=[ 34341], 80.00th=[ 38536], 90.00th=[ 45876], 95.00th=[ 51643], | 99.00th=[ 69731], 99.50th=[ 82314], 99.90th=[139461], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 24, max= 192, per=25.18%, avg=73.52, stdev=22.92, samples=160 iops : min= 6, max= 48, avg=17.89, stdev= 5.79, samples=160 write: IOPS=19, BW=77.7KiB/s (79.6kB/s)(6296KiB/81009msec); 0 zone resets clat (usec): min=788, max=94964, avg=23918.38, stdev=14979.09 lat (usec): min=789, max=94964, avg=23918.98, stdev=14979.08 clat percentiles (usec): | 1.00th=[ 2540], 5.00th=[ 5735], 10.00th=[ 6980], 20.00th=[ 9634], | 30.00th=[14222], 40.00th=[17695], 50.00th=[21627], 60.00th=[25560], | 70.00th=[30016], 80.00th=[35914], 90.00th=[44827], 95.00th=[51643], | 99.00th=[68682], 99.50th=[72877], 99.90th=[91751], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 15, max= 184, per=25.27%, avg=77.32, stdev=26.51, samples=160 iops : min= 3, max= 46, avg=18.85, stdev= 6.64, samples=160 lat (usec) : 100=0.10%, 250=1.11%, 500=0.29%, 1000=0.20% lat (msec) : 2=0.26%, 4=0.94%, 10=10.29%, 20=23.96%, 50=56.64% lat (msec) : 100=6.12%, 250=0.07%, 500=0.03% cpu : usr=0.04%, sys=30.33%, ctx=11968, 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=160451: Sat Aug 8 11:48:41 2026 read: IOPS=18, BW=72.6KiB/s (74.3kB/s)(5940KiB/81849msec) clat (usec): min=99, max=481613, avg=29558.10, stdev=18333.12 lat (usec): min=100, max=481613, avg=29558.62, stdev=18333.25 clat percentiles (usec): | 1.00th=[ 194], 5.00th=[ 9372], 10.00th=[ 14222], 20.00th=[ 18220], | 30.00th=[ 21365], 40.00th=[ 24773], 50.00th=[ 27919], 60.00th=[ 31065], | 70.00th=[ 34866], 80.00th=[ 39060], 90.00th=[ 46400], 95.00th=[ 52691], | 99.00th=[ 72877], 99.50th=[ 76022], 99.90th=[110625], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 10, max= 184, per=24.70%, avg=72.14, stdev=22.33, samples=162 iops : min= 2, max= 46, avg=17.54, stdev= 5.61, samples=162 write: IOPS=19, BW=77.6KiB/s (79.4kB/s)(6348KiB/81849msec); 0 zone resets clat (usec): min=827, max=178641, avg=23885.74, stdev=15308.95 lat (usec): min=827, max=178641, avg=23888.28, stdev=15307.21 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 36], 90.00th=[ 44], 95.00th=[ 51], | 99.00th=[ 68], 99.50th=[ 82], 99.90th=[ 105], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 23, max= 191, per=25.11%, avg=76.85, stdev=26.25, samples=162 iops : min= 5, max= 47, avg=18.73, stdev= 6.56, samples=162 lat (usec) : 100=0.03%, 250=1.24%, 500=0.23%, 1000=0.10% lat (msec) : 2=0.23%, 4=0.88%, 10=11.07%, 20=21.97%, 50=58.14% lat (msec) : 100=5.89%, 250=0.20%, 500=0.03% cpu : usr=0.04%, sys=30.14%, ctx=11943, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160452: Sat Aug 8 11:48:41 2026 read: IOPS=18, BW=74.5KiB/s (76.2kB/s)(6028KiB/80965msec) clat (usec): min=34, max=122604, avg=28765.98, stdev=13779.60 lat (usec): min=35, max=122604, avg=28766.53, stdev=13779.64 clat percentiles (usec): | 1.00th=[ 208], 5.00th=[ 10159], 10.00th=[ 14484], 20.00th=[ 17957], | 30.00th=[ 20841], 40.00th=[ 23725], 50.00th=[ 27395], 60.00th=[ 30802], | 70.00th=[ 34341], 80.00th=[ 39060], 90.00th=[ 45876], 95.00th=[ 52691], | 99.00th=[ 71828], 99.50th=[ 79168], 99.90th=[ 89654], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 24, max= 200, per=25.41%, avg=74.19, stdev=24.09, samples=160 iops : min= 6, max= 50, avg=18.06, stdev= 6.03, samples=160 write: IOPS=19, BW=77.3KiB/s (79.2kB/s)(6260KiB/80965msec); 0 zone resets clat (usec): min=763, max=493011, avg=24013.66, stdev=19098.91 lat (usec): min=764, max=493011, avg=24014.36, stdev=19098.89 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 5604], 10.00th=[ 7111], 20.00th=[ 9241], | 30.00th=[ 13435], 40.00th=[ 17695], 50.00th=[ 21365], 60.00th=[ 25822], | 70.00th=[ 30540], 80.00th=[ 35914], 90.00th=[ 43779], 95.00th=[ 51643], | 99.00th=[ 66847], 99.50th=[ 73925], 99.90th=[100140], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 23, max= 190, per=25.16%, avg=76.98, stdev=25.43, samples=160 iops : min= 5, max= 47, avg=18.76, stdev= 6.39, samples=160 lat (usec) : 50=0.03%, 100=0.03%, 250=1.24%, 500=0.33%, 1000=0.33% lat (msec) : 2=0.23%, 4=0.98%, 10=10.94%, 20=22.56%, 50=57.03% lat (msec) : 100=6.22%, 250=0.07%, 500=0.03% cpu : usr=0.04%, sys=30.26%, ctx=11965, 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=160453: Sat Aug 8 11:48:41 2026 read: IOPS=18, BW=73.8KiB/s (75.6kB/s)(6052KiB/81978msec) clat (usec): min=34, max=101401, avg=28632.06, stdev=14028.33 lat (usec): min=35, max=101401, avg=28632.63, stdev=14028.31 clat percentiles (usec): | 1.00th=[ 208], 5.00th=[ 8979], 10.00th=[ 13829], 20.00th=[ 17695], | 30.00th=[ 20579], 40.00th=[ 23725], 50.00th=[ 26608], 60.00th=[ 30278], | 70.00th=[ 34341], 80.00th=[ 39584], 90.00th=[ 45876], 95.00th=[ 52691], | 99.00th=[ 71828], 99.50th=[ 82314], 99.90th=[ 95945], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 21, max= 144, per=24.98%, avg=72.95, stdev=20.22, samples=162 iops : min= 5, max= 36, avg=17.75, stdev= 5.07, samples=162 write: IOPS=19, BW=76.1KiB/s (77.9kB/s)(6236KiB/81978msec); 0 zone resets clat (usec): min=768, max=491678, avg=24770.80, stdev=19449.97 lat (usec): min=769, max=491678, avg=24771.40, stdev=19449.97 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 5342], 10.00th=[ 6915], 20.00th=[ 9110], | 30.00th=[ 14484], 40.00th=[ 18482], 50.00th=[ 22152], 60.00th=[ 26346], | 70.00th=[ 31589], 80.00th=[ 37487], 90.00th=[ 44827], 95.00th=[ 52167], | 99.00th=[ 68682], 99.50th=[ 76022], 99.90th=[117965], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 21, max= 214, per=24.61%, avg=75.30, stdev=25.76, samples=162 iops : min= 5, max= 53, avg=18.34, stdev= 6.49, samples=162 lat (usec) : 50=0.07%, 100=0.03%, 250=1.04%, 500=0.42%, 750=0.07% lat (usec) : 1000=0.42% lat (msec) : 2=0.16%, 4=0.98%, 10=10.74%, 20=22.01%, 50=57.81% lat (msec) : 100=6.15%, 250=0.07%, 500=0.03% cpu : usr=0.03%, sys=29.71%, ctx=12014, 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=293KiB/s (300kB/s), 72.6KiB/s-74.5KiB/s (74.3kB/s-76.2kB/s), io=23.4MiB (24.6MB), run=80965-81978msec WRITE: bw=307KiB/s (314kB/s), 76.1KiB/s-77.7KiB/s (77.9kB/s-79.6kB/s), io=24.6MiB (25.7MB), run=80965-81978msec fio: pid=160448, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=160445: Sat Aug 8 11:48:57 2026 read: IOPS=15, BW=60.8KiB/s (62.2kB/s)(5992KiB/98617msec) clat (msec): min=2, max=836, avg=24.57, stdev=29.46 lat (msec): min=2, max=836, avg=24.57, stdev=29.46 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 50], 95.00th=[ 64], | 99.00th=[ 104], 99.50th=[ 122], 99.90th=[ 163], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 15, max= 208, per=25.01%, avg=60.78, stdev=37.82, samples=195 iops : min= 3, max= 52, avg=14.72, stdev= 9.63, samples=195 write: IOPS=15, BW=63.8KiB/s (65.4kB/s)(6296KiB/98617msec); 0 zone resets clat (msec): min=12, max=144, avg=39.14, stdev=19.75 lat (msec): min=12, max=144, avg=39.14, stdev=19.75 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 45], 80.00th=[ 53], 90.00th=[ 65], 95.00th=[ 79], | 99.00th=[ 109], 99.50th=[ 125], 99.90th=[ 142], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 8, max= 176, per=25.11%, avg=63.77, stdev=33.39, samples=195 iops : min= 2, max= 44, avg=15.47, stdev= 8.54, samples=195 lat (msec) : 4=2.41%, 10=12.24%, 20=16.11%, 50=52.73%, 100=15.30% lat (msec) : 250=1.17%, 1000=0.03% cpu : usr=0.03%, sys=14.67%, ctx=7981, 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=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=160446: Sat Aug 8 11:48:57 2026 read: IOPS=15, BW=60.8KiB/s (62.3kB/s)(5940KiB/97692msec) clat (msec): min=2, max=862, avg=23.86, stdev=28.58 lat (msec): min=2, max=862, avg=23.86, stdev=28.58 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 48], 95.00th=[ 61], | 99.00th=[ 90], 99.50th=[ 96], 99.90th=[ 140], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 224, per=25.01%, avg=60.78, stdev=37.31, samples=193 iops : min= 1, max= 56, avg=14.72, stdev= 9.49, samples=193 write: IOPS=16, BW=64.0KiB/s (66.5kB/s)(6348KiB/97692msec); 0 zone resets clat (msec): min=13, max=161, avg=39.11, stdev=19.51 lat (msec): min=13, max=161, avg=39.11, stdev=19.51 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 53], 90.00th=[ 66], 95.00th=[ 77], | 99.00th=[ 107], 99.50th=[ 121], 99.90th=[ 148], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 8, max= 176, per=25.50%, avg=64.76, stdev=33.24, samples=193 iops : min= 2, max= 44, avg=15.72, stdev= 8.49, samples=193 lat (msec) : 4=3.03%, 10=10.68%, 20=15.89%, 50=54.00%, 100=15.53% lat (msec) : 250=0.85%, 1000=0.03% cpu : usr=0.04%, sys=14.84%, ctx=7976, 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=160447: Sat Aug 8 11:48:57 2026 read: IOPS=15, BW=61.9KiB/s (63.3kB/s)(6028KiB/97438msec) clat (msec): min=2, max=120, avg=23.78, stdev=18.58 lat (msec): min=2, max=120, avg=23.78, stdev=18.58 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 52], 95.00th=[ 62], | 99.00th=[ 87], 99.50th=[ 97], 99.90th=[ 115], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 7, max= 248, per=25.50%, avg=61.96, stdev=37.39, samples=191 iops : min= 1, max= 62, avg=15.01, stdev= 9.52, samples=191 write: IOPS=16, BW=64.2KiB/s (65.8kB/s)(6260KiB/97438msec); 0 zone resets clat (msec): min=12, max=876, avg=39.23, stdev=28.53 lat (msec): min=12, max=876, avg=39.23, stdev=28.53 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 44], 80.00th=[ 53], 90.00th=[ 64], 95.00th=[ 73], | 99.00th=[ 107], 99.50th=[ 122], 99.90th=[ 182], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 15, max= 176, per=25.17%, avg=63.93, stdev=31.98, samples=192 iops : min= 3, max= 44, avg=15.51, stdev= 8.19, samples=192 lat (msec) : 4=2.38%, 10=11.20%, 20=15.98%, 50=53.94%, 100=15.63% lat (msec) : 250=0.85%, 1000=0.03% cpu : usr=0.04%, sys=14.92%, ctx=7976, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=160448: Sat Aug 8 11:48:57 2026 read: IOPS=15, BW=61.0KiB/s (63.5kB/s)(6028KiB/97250msec) clat (msec): min=2, max=129, avg=23.19, stdev=17.88 lat (msec): min=2, max=129, avg=23.19, stdev=17.88 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 47], 95.00th=[ 58], | 99.00th=[ 83], 99.50th=[ 97], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 7, max= 248, per=25.62%, avg=62.25, stdev=37.13, samples=190 iops : min= 1, max= 62, avg=15.08, stdev= 9.44, samples=190 write: IOPS=15, BW=63.7KiB/s (65.2kB/s)(6196KiB/97250msec); 0 zone resets clat (msec): min=12, max=875, avg=40.09, stdev=29.87 lat (msec): min=12, max=875, avg=40.10, stdev=29.87 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 53], 90.00th=[ 67], 95.00th=[ 80], | 99.00th=[ 117], 99.50th=[ 142], 99.90th=[ 182], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 15, max= 176, per=25.06%, avg=63.65, stdev=32.21, samples=192 iops : min= 3, max= 44, avg=15.43, stdev= 8.25, samples=192 lat (msec) : 4=1.96%, 10=11.38%, 20=17.11%, 50=53.81%, 100=14.33% lat (msec) : 250=1.34%, 1000=0.03% cpu : usr=0.05%, sys=15.00%, ctx=8078, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1508,1549,0,0 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=243KiB/s (249kB/s), 60.8KiB/s-61.0KiB/s (62.2kB/s-63.5kB/s), io=23.4MiB (24.6MB), run=97250-98617msec WRITE: bw=255KiB/s (261kB/s), 63.7KiB/s-64.0KiB/s (65.2kB/s-66.5kB/s), io=24.5MiB (25.7MB), run=97250-98617msec 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=160482: Sat Aug 8 11:49:30 2026 read: IOPS=15, BW=244KiB/s (250kB/s)(5920KiB/24285msec) clat (usec): min=154, max=121898, avg=32778.94, stdev=17321.81 lat (usec): min=154, max=121899, avg=32779.48, stdev=17321.83 clat percentiles (usec): | 1.00th=[ 176], 5.00th=[ 265], 10.00th=[ 16909], 20.00th=[ 20841], | 30.00th=[ 23987], 40.00th=[ 27132], 50.00th=[ 30540], 60.00th=[ 34341], | 70.00th=[ 39584], 80.00th=[ 44303], 90.00th=[ 52691], 95.00th=[ 61080], | 99.00th=[ 83362], 99.50th=[113771], 99.90th=[122160], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 95, max= 480, per=25.08%, avg=241.79, stdev=72.27, samples=47 iops : min= 5, max= 30, avg=14.47, stdev= 4.63, samples=47 write: IOPS=16, BW=262KiB/s (269kB/s)(6368KiB/24285msec); 0 zone resets clat (usec): min=1340, max=131974, avg=30479.14, stdev=17182.70 lat (usec): min=1341, max=131975, avg=30479.99, stdev=17182.70 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 46], 90.00th=[ 53], 95.00th=[ 61], | 99.00th=[ 78], 99.50th=[ 82], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 64, max= 439, per=25.86%, avg=262.23, stdev=73.99, samples=47 iops : min= 4, max= 27, avg=15.74, stdev= 4.60, samples=47 lat (usec) : 250=1.82%, 500=1.56% lat (msec) : 2=0.26%, 4=0.13%, 10=3.26%, 20=17.71%, 50=61.85% lat (msec) : 100=13.02%, 250=0.39% cpu : usr=0.04%, sys=31.81%, ctx=3521, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160483: Sat Aug 8 11:49:30 2026 read: IOPS=14, BW=231KiB/s (237kB/s)(5744KiB/24844msec) clat (usec): min=35, max=100815, avg=34897.79, stdev=16346.24 lat (usec): min=35, max=100816, avg=34898.34, stdev=16346.23 clat percentiles (usec): | 1.00th=[ 206], 5.00th=[ 302], 10.00th=[ 17695], 20.00th=[ 22938], | 30.00th=[ 26346], 40.00th=[ 31065], 50.00th=[ 34341], 60.00th=[ 38011], | 70.00th=[ 41157], 80.00th=[ 45876], 90.00th=[ 55837], 95.00th=[ 64750], | 99.00th=[ 80217], 99.50th=[ 84411], 99.90th=[101188], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 95, max= 384, per=23.57%, avg=227.23, stdev=60.90, samples=48 iops : min= 5, max= 24, avg=13.56, stdev= 3.85, samples=48 write: IOPS=16, BW=263KiB/s (270kB/s)(6544KiB/24844msec); 0 zone resets clat (usec): min=1104, max=102868, avg=29900.38, stdev=18393.79 lat (usec): min=1105, max=102869, avg=29901.29, stdev=18393.76 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 67], | 99.00th=[ 89], 99.50th=[ 93], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 127, max= 384, per=25.14%, avg=254.92, stdev=79.93, samples=48 iops : min= 7, max= 24, avg=15.31, stdev= 5.06, samples=48 lat (usec) : 50=0.13%, 250=1.17%, 500=1.30% lat (msec) : 2=0.52%, 4=0.52%, 10=3.52%, 20=17.58%, 50=61.46% lat (msec) : 100=13.41%, 250=0.39% cpu : usr=0.03%, sys=31.49%, ctx=3523, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160484: Sat Aug 8 11:49:30 2026 read: IOPS=16, BW=256KiB/s (262kB/s)(6256KiB/24412msec) clat (usec): min=36, max=86921, avg=32075.95, stdev=16949.73 lat (usec): min=37, max=86922, avg=32076.48, stdev=16949.72 clat percentiles (usec): | 1.00th=[ 141], 5.00th=[ 243], 10.00th=[ 6456], 20.00th=[20055], | 30.00th=[23725], 40.00th=[28705], 50.00th=[32375], 60.00th=[35914], | 70.00th=[40109], 80.00th=[43779], 90.00th=[50594], 95.00th=[62653], | 99.00th=[76022], 99.50th=[82314], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 96, max= 414, per=26.74%, avg=257.77, stdev=72.63, samples=48 iops : min= 6, max= 25, avg=15.48, stdev= 4.54, samples=48 write: IOPS=15, BW=247KiB/s (253kB/s)(6032KiB/24412msec); 0 zone resets clat (usec): min=1196, max=110046, avg=31226.02, stdev=17628.16 lat (usec): min=1197, max=110047, avg=31227.84, stdev=17629.98 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 47], 90.00th=[ 56], 95.00th=[ 63], | 99.00th=[ 82], 99.50th=[ 99], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 127, max= 439, per=24.17%, avg=245.08, stdev=70.54, samples=48 iops : min= 7, max= 27, avg=14.69, stdev= 4.48, samples=48 lat (usec) : 50=0.26%, 250=2.86%, 500=1.69% lat (msec) : 2=0.13%, 10=2.86%, 20=18.49%, 50=60.16%, 100=13.41% lat (msec) : 250=0.13% cpu : usr=0.02%, sys=31.41%, ctx=3510, 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=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=160485: Sat Aug 8 11:49:30 2026 read: IOPS=15, BW=253KiB/s (259kB/s)(6032KiB/23821msec) clat (usec): min=167, max=134681, avg=32426.41, stdev=18874.10 lat (usec): min=168, max=134682, avg=32426.88, stdev=18874.10 clat percentiles (usec): | 1.00th=[ 180], 5.00th=[ 221], 10.00th=[ 302], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 28705], 50.00th=[ 31589], 60.00th=[ 35390], | 70.00th=[ 39060], 80.00th=[ 44827], 90.00th=[ 51643], 95.00th=[ 58983], | 99.00th=[114820], 99.50th=[126354], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 63, max= 352, per=26.10%, avg=251.65, stdev=59.37, samples=46 iops : min= 3, max= 22, avg=15.09, stdev= 3.81, samples=46 write: IOPS=16, BW=263KiB/s (269kB/s)(6256KiB/23821msec); 0 zone resets clat (usec): min=1110, max=99562, avg=29380.66, stdev=15907.35 lat (usec): min=1111, max=99563, avg=29381.58, stdev=15907.41 clat percentiles (usec): | 1.00th=[ 2376], 5.00th=[ 9896], 10.00th=[11469], 20.00th=[14484], | 30.00th=[19268], 40.00th=[23200], 50.00th=[26346], 60.00th=[30802], | 70.00th=[36439], 80.00th=[42730], 90.00th=[51119], 95.00th=[57410], | 99.00th=[74974], 99.50th=[85459], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 126, max= 447, per=25.80%, avg=261.57, stdev=68.57, samples=46 iops : min= 7, max= 27, avg=15.72, stdev= 4.26, samples=46 lat (usec) : 250=3.78%, 500=1.43% lat (msec) : 2=0.52%, 4=0.39%, 10=1.95%, 20=17.58%, 50=62.89% lat (msec) : 100=10.94%, 250=0.52% cpu : usr=0.03%, sys=32.06%, ctx=3485, 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=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=964KiB/s (987kB/s), 231KiB/s-256KiB/s (237kB/s-262kB/s), io=23.4MiB (24.5MB), run=23821-24844msec WRITE: bw=1014KiB/s (1039kB/s), 247KiB/s-263KiB/s (253kB/s-270kB/s), io=24.6MiB (25.8MB), run=23821-24844msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160486: Sat Aug 8 11:49:34 2026 read: IOPS=12, BW=202KiB/s (207kB/s)(5920KiB/29270msec) clat (msec): min=3, max=118, avg=27.95, stdev=23.55 lat (msec): min=3, max=118, avg=27.95, stdev=23.55 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 63], 95.00th=[ 79], | 99.00th=[ 106], 99.50th=[ 116], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 32, max= 576, per=23.88%, avg=195.14, stdev=123.80, samples=57 iops : min= 2, max= 36, avg=11.65, stdev= 7.86, samples=57 write: IOPS=13, BW=218KiB/s (223kB/s)(6368KiB/29270msec); 0 zone resets clat (msec): min=13, max=191, avg=47.45, stdev=26.99 lat (msec): min=13, max=191, avg=47.45, stdev=26.99 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 67], 90.00th=[ 87], 95.00th=[ 102], | 99.00th=[ 138], 99.50th=[ 140], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 31, max= 512, per=24.84%, avg=213.63, stdev=114.77, samples=57 iops : min= 1, max= 32, avg=12.81, stdev= 7.35, samples=57 lat (msec) : 4=1.69%, 10=10.94%, 20=12.89%, 50=48.57%, 100=22.14% lat (msec) : 250=3.78% cpu : usr=0.03%, sys=14.62%, ctx=2283, 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=160487: Sat Aug 8 11:49:34 2026 read: IOPS=12, BW=197KiB/s (201kB/s)(5744KiB/29209msec) clat (msec): min=3, max=181, avg=28.76, stdev=25.20 lat (msec): min=3, max=181, avg=28.76, stdev=25.20 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 66], 95.00th=[ 82], | 99.00th=[ 115], 99.50th=[ 144], 99.90th=[ 182], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 31, max= 576, per=24.04%, avg=196.39, stdev=116.88, samples=57 iops : min= 1, max= 36, avg=11.72, stdev= 7.52, samples=57 write: IOPS=14, BW=224KiB/s (229kB/s)(6544KiB/29209msec); 0 zone resets clat (msec): min=15, max=173, avg=45.66, stdev=25.11 lat (msec): min=15, max=173, avg=45.66, stdev=25.11 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 54], 80.00th=[ 64], 90.00th=[ 78], 95.00th=[ 95], | 99.00th=[ 136], 99.50th=[ 146], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 64, max= 576, per=25.66%, avg=220.70, stdev=113.86, samples=57 iops : min= 4, max= 36, avg=13.25, stdev= 7.25, samples=57 lat (msec) : 4=1.43%, 10=9.77%, 20=11.59%, 50=51.82%, 100=22.66% lat (msec) : 250=2.73% cpu : usr=0.02%, sys=14.83%, ctx=2272, 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=160488: Sat Aug 8 11:49:34 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(6256KiB/29060msec) clat (msec): min=3, max=116, avg=28.25, stdev=22.93 lat (msec): min=3, max=116, avg=28.25, stdev=22.93 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 44], 90.00th=[ 66], 95.00th=[ 80], | 99.00th=[ 97], 99.50th=[ 105], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 63, max= 894, per=26.56%, avg=217.00, stdev=150.86, samples=57 iops : min= 3, max= 55, avg=13.02, stdev= 9.52, samples=57 write: IOPS=12, BW=208KiB/s (213kB/s)(6032KiB/29060msec); 0 zone resets clat (msec): min=15, max=179, avg=47.25, stdev=26.14 lat (msec): min=15, max=179, avg=47.25, stdev=26.14 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 65], 90.00th=[ 81], 95.00th=[ 99], | 99.00th=[ 144], 99.50th=[ 153], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 63, max= 512, per=23.93%, avg=205.82, stdev=112.94, samples=57 iops : min= 3, max= 32, avg=12.32, stdev= 7.29, samples=57 lat (msec) : 4=1.69%, 10=11.46%, 20=11.59%, 50=51.17%, 100=21.61% lat (msec) : 250=2.47% cpu : usr=0.06%, sys=14.72%, ctx=2218, 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=160489: Sat Aug 8 11:49:34 2026 read: IOPS=12, BW=206KiB/s (211kB/s)(6032KiB/29293msec) clat (msec): min=2, max=184, avg=27.89, stdev=24.93 lat (msec): min=2, max=184, avg=27.89, stdev=24.93 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 42], 90.00th=[ 58], 95.00th=[ 78], | 99.00th=[ 117], 99.50th=[ 123], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 32, max= 704, per=24.55%, avg=200.54, stdev=126.03, samples=57 iops : min= 2, max= 44, avg=11.98, stdev= 8.03, samples=57 write: IOPS=13, BW=214KiB/s (219kB/s)(6256KiB/29293msec); 0 zone resets clat (msec): min=14, max=195, avg=47.48, stdev=26.57 lat (msec): min=14, max=195, avg=47.48, stdev=26.57 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 67], 90.00th=[ 85], 95.00th=[ 103], | 99.00th=[ 138], 99.50th=[ 150], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 63, max= 512, per=24.29%, avg=208.93, stdev=115.29, samples=57 iops : min= 3, max= 32, avg=12.51, stdev= 7.38, samples=57 lat (msec) : 4=1.82%, 10=11.07%, 20=12.24%, 50=48.70%, 100=21.88% lat (msec) : 250=4.30% cpu : usr=0.02%, sys=14.68%, ctx=2332, 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=818KiB/s (837kB/s), 197KiB/s-215KiB/s (201kB/s-220kB/s), io=23.4MiB (24.5MB), run=29060-29293msec WRITE: bw=860KiB/s (881kB/s), 208KiB/s-224KiB/s (213kB/s-229kB/s), io=24.6MiB (25.8MB), run=29060-29293msec 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=160503: Sat Aug 8 11:49:51 2026 read: IOPS=1, BW=1120KiB/s (1147kB/s)(7168KiB/6402msec) clat (usec): min=441, max=3648.5k, avg=681370.63, stdev=1315419.23 lat (usec): min=442, max=3648.5k, avg=681371.74, stdev=1315418.93 clat percentiles (usec): | 1.00th=[ 441], 5.00th=[ 441], 10.00th=[ 441], | 20.00th=[ 652], 30.00th=[ 210764], 40.00th=[ 210764], | 50.00th=[ 287310], 60.00th=[ 299893], 70.00th=[ 299893], | 80.00th=[ 320865], 90.00th=[3640656], 95.00th=[3640656], | 99.00th=[3640656], 99.50th=[3640656], 99.90th=[3640656], | 99.95th=[3640656], 99.99th=[3640656] bw ( KiB/s): min= 1741, max= 3938, per=73.85%, avg=2362.60, stdev=890.44, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=800KiB/s (819kB/s)(5120KiB/6402msec); 0 zone resets clat (msec): min=154, max=360, avg=288.69, stdev=95.60 lat (msec): min=154, max=360, avg=288.73, stdev=95.59 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1969, max= 4087, per=56.60%, avg=2534.75, stdev=1035.41, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, >=2000=8.33% cpu : usr=0.00%, sys=36.93%, ctx=1398, 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=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=160504: Sat Aug 8 11:49:51 2026 read: IOPS=0, BW=346KiB/s (354kB/s)(2048KiB/5920msec) clat (msec): min=222, max=378, avg=300.49, stdev=110.43 lat (msec): min=222, max=378, avg=300.49, stdev=110.43 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 1718, max= 2048, per=58.86%, avg=1883.00, stdev=233.35, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1730KiB/s (1771kB/s)(10.0MiB/5920msec); 0 zone resets clat (msec): min=212, max=1391, avg=523.71, stdev=371.84 lat (msec): min=212, max=1391, avg=524.60, stdev=371.59 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 249], | 30.00th=[ 268], 40.00th=[ 275], 50.00th=[ 384], 60.00th=[ 418], | 70.00th=[ 456], 80.00th=[ 709], 90.00th=[ 877], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1914, max= 4096, per=57.88%, avg=2591.71, stdev=1015.01, samples=7 iops : min= 1, max= 4, avg= 2.00, stdev= 1.15, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=46.12%, ctx=821, 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=160505: Sat Aug 8 11:49:51 2026 read: IOPS=0, BW=969KiB/s (992kB/s)(6144KiB/6341msec) clat (usec): min=556, max=363115, avg=175513.92, stdev=191746.28 lat (usec): min=557, max=363116, avg=175514.93, stdev=191746.26 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[341836], | 70.00th=[346031], 80.00th=[346031], 90.00th=[362808], 95.00th=[362808], | 99.00th=[362808], 99.50th=[362808], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 2035, max= 4096, per=100.00%, avg=3409.00, stdev=1189.92, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=0, BW=969KiB/s (992kB/s)(6144KiB/6341msec); 0 zone resets clat (msec): min=224, max=1882, avg=877.88, stdev=702.72 lat (msec): min=224, max=1882, avg=877.92, stdev=702.73 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 802], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 1718, max= 2048, per=43.43%, avg=1944.80, stdev=134.46, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=25.00% lat (msec) : 250=8.33%, 500=41.67%, 1000=8.33%, 2000=16.67% cpu : usr=0.02%, sys=32.10%, ctx=583, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160506: Sat Aug 8 11:49:51 2026 read: IOPS=0, BW=925KiB/s (947kB/s)(5120KiB/5535msec) clat (usec): min=608, max=379564, avg=210726.08, stdev=176983.07 lat (usec): min=608, max=379565, avg=210726.88, stdev=176982.90 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 611], | 30.00th=[ 38011], 40.00th=[ 38011], 50.00th=[312476], 60.00th=[312476], | 70.00th=[320865], 80.00th=[320865], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 3893, max= 4096, per=100.00%, avg=3994.50, stdev=143.54, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1295KiB/s (1326kB/s)(7168KiB/5535msec); 0 zone resets clat (msec): min=255, max=1862, avg=627.89, stdev=593.79 lat (msec): min=255, max=1862, avg=627.96, stdev=593.77 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 305], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 936], 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= 1741, max= 3938, per=64.51%, avg=2888.75, stdev=1155.75, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 500=66.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=40.69%, ctx=405, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3199KiB/s (3276kB/s), 346KiB/s-1120KiB/s (354kB/s-1147kB/s), io=20.0MiB (20.0MB), run=5535-6402msec WRITE: bw=4479KiB/s (4586kB/s), 800KiB/s-1730KiB/s (819kB/s-1771kB/s), io=28.0MiB (29.4MB), run=5535-6402msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160508: Sat Aug 8 11:49:52 2026 read: IOPS=1, BW=1040KiB/s (1065kB/s)(7168KiB/6890msec) clat (msec): min=22, max=2646, avg=849.51, stdev=947.70 lat (msec): min=22, max=2646, avg=849.51, stdev=947.70 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 23], 10.00th=[ 23], 20.00th=[ 24], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 376], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1301], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 1747, max= 2048, per=66.85%, avg=1986.80, stdev=134.07, samples=5 iops : min= 1, max= 2, avg= 1.60, stdev= 0.55, samples=5 write: IOPS=0, BW=743KiB/s (761kB/s)(5120KiB/6890msec); 0 zone resets clat (msec): min=36, max=376, avg=155.78, stdev=137.76 lat (msec): min=36, max=376, avg=155.82, stdev=137.76 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 37], 10.00th=[ 37], 20.00th=[ 37], | 30.00th=[ 60], 40.00th=[ 60], 50.00th=[ 110], 60.00th=[ 110], | 70.00th=[ 197], 80.00th=[ 197], 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= 1861, max= 2048, per=46.97%, avg=1954.50, stdev=132.23, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 50=25.00%, 100=8.33%, 250=16.67%, 500=25.00%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=7.68%, 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=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=160509: Sat Aug 8 11:49:52 2026 read: IOPS=0, BW=312KiB/s (319kB/s)(2048KiB/6570msec) clat (msec): min=99, max=753, avg=426.63, stdev=462.57 lat (msec): min=99, max=753, avg=426.63, stdev=462.57 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 100], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 100], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 2015, max= 2043, per=68.27%, avg=2029.00, stdev=19.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1559KiB/s (1596kB/s)(10.0MiB/6570msec); 0 zone resets clat (msec): min=46, max=2106, avg=558.75, stdev=697.79 lat (msec): min=46, max=2106, avg=558.83, stdev=697.79 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 68], | 30.00th=[ 106], 40.00th=[ 115], 50.00th=[ 305], 60.00th=[ 397], | 70.00th=[ 414], 80.00th=[ 489], 90.00th=[ 1536], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 2003, max= 6144, per=78.39%, avg=3261.60, stdev=1842.07, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (msec) : 50=8.33%, 100=16.67%, 250=16.67%, 500=33.33%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=14.26%, ctx=283, 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=160510: Sat Aug 8 11:49:52 2026 read: IOPS=0, BW=916KiB/s (938kB/s)(6144KiB/6710msec) clat (msec): min=56, max=604, avg=201.42, stdev=204.83 lat (msec): min=56, max=604, avg=201.43, stdev=204.83 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 56], 10.00th=[ 56], 20.00th=[ 66], | 30.00th=[ 66], 40.00th=[ 121], 50.00th=[ 121], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2031, max= 4096, per=85.95%, avg=2554.50, stdev=1027.69, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=0, BW=916KiB/s (938kB/s)(6144KiB/6710msec); 0 zone resets clat (msec): min=113, max=1893, avg=894.31, stdev=736.25 lat (msec): min=113, max=1893, avg=894.35, stdev=736.24 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 785], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 2031, max= 4031, per=58.62%, avg=2439.20, stdev=889.87, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=16.67% cpu : usr=0.00%, sys=13.24%, ctx=337, 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=160511: Sat Aug 8 11:49:52 2026 read: IOPS=0, BW=766KiB/s (785kB/s)(5120KiB/6681msec) clat (msec): min=67, max=648, avg=207.92, stdev=247.18 lat (msec): min=67, max=648, avg=207.92, stdev=247.18 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 110], 60.00th=[ 110], | 70.00th=[ 128], 80.00th=[ 128], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 4087, max= 4096, per=100.00%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1073KiB/s (1099kB/s)(7168KiB/6681msec); 0 zone resets clat (msec): min=98, max=2097, avg=788.16, stdev=785.08 lat (msec): min=98, max=2097, avg=788.24, stdev=785.08 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 184], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 793], | 70.00th=[ 793], 80.00th=[ 1653], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 2003, max= 6144, per=68.43%, avg=2847.20, stdev=1843.03, samples=5 iops : min= 1, max= 6, avg= 2.00, stdev= 2.24, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=13.83%, ctx=218, 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=2972KiB/s (3044kB/s), 312KiB/s-1040KiB/s (319kB/s-1065kB/s), io=20.0MiB (20.0MB), run=6570-6890msec WRITE: bw=4161KiB/s (4261kB/s), 743KiB/s-1559KiB/s (761kB/s-1596kB/s), io=28.0MiB (29.4MB), run=6570-6890msec 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=160518: Sat Aug 8 11:50:00 2026 read: IOPS=2, BW=9170KiB/s (9390kB/s)(12.0MiB/1340msec) clat (msec): min=303, max=522, avg=433.10, stdev=114.61 lat (msec): min=303, max=522, avg=433.10, stdev=114.61 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 5688, max= 8192, per=70.49%, avg=6940.00, stdev=1770.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=46.53%, ctx=2914, 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=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=160519: Sat Aug 8 11:50:00 2026 read: IOPS=0, BW=2462KiB/s (2521kB/s)(4096KiB/1664msec) clat (nsec): min=371425k, max=371425k, avg=371425339.00, stdev= 0.00 lat (nsec): min=371428k, max=371428k, avg=371427528.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7787, max= 7787, per=79.09%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4923KiB/s (5041kB/s)(8192KiB/1664msec); 0 zone resets clat (msec): min=565, max=706, avg=636.22, stdev=99.91 lat (msec): min=565, max=707, avg=636.44, stdev=100.06 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 8192, max= 8192, per=49.95%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=23.75%, ctx=1071, 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=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=160520: Sat Aug 8 11:50:00 2026 write: IOPS=1, BW=6150KiB/s (6298kB/s)(12.0MiB/1998msec); 0 zone resets clat (msec): min=135, max=1423, avg=661.08, stdev=675.72 lat (msec): min=135, max=1423, avg=661.46, stdev=675.66 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8192, max= 8192, per=49.95%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=14.62%, ctx=81, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=160521: Sat Aug 8 11:50:00 2026 write: IOPS=1, BW=7297KiB/s (7472kB/s)(12.0MiB/1684msec); 0 zone resets clat (msec): min=306, max=904, avg=558.21, stdev=310.33 lat (msec): min=306, max=905, avg=558.45, stdev=310.42 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7380, max= 8192, per=47.48%, avg=7786.00, stdev=574.17, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.06%, sys=14.97%, ctx=71, 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=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=9846KiB/s (10.1MB/s), 2462KiB/s-9170KiB/s (2521kB/s-9390kB/s), io=16.0MiB (16.8MB), run=1340-1664msec WRITE: bw=16.0MiB/s (16.8MB/s), 4923KiB/s-7297KiB/s (5041kB/s-7472kB/s), io=32.0MiB (33.6MB), run=1664-1998msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160522: Sat Aug 8 11:50:00 2026 read: IOPS=1, BW=6763KiB/s (6925kB/s)(12.0MiB/1817msec) clat (msec): min=383, max=850, avg=599.93, stdev=235.44 lat (msec): min=383, max=850, avg=599.93, stdev=235.44 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8175, max= 8192, per=96.15%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=13.77%, ctx=130, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160523: Sat Aug 8 11:50:00 2026 read: IOPS=0, BW=2128KiB/s (2179kB/s)(4096KiB/1925msec) clat (nsec): min=1094.4M, max=1094.4M, avg=1094433080.00, stdev= 0.00 lat (nsec): min=1094.4M, max=1094.4M, avg=1094433751.00, 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= 8175, max= 8175, per=96.05%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4256KiB/s (4358kB/s)(8192KiB/1925msec); 0 zone resets clat (msec): min=362, max=443, avg=402.97, stdev=57.24 lat (msec): min=362, max=443, avg=403.19, stdev=57.19 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 8192, max= 8192, per=48.13%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.05%, sys=16.27%, ctx=73, 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=160524: Sat Aug 8 11:50:00 2026 write: IOPS=1, BW=7416KiB/s (7594kB/s)(12.0MiB/1657msec); 0 zone resets clat (msec): min=404, max=692, avg=546.80, stdev=144.06 lat (msec): min=404, max=692, avg=547.07, stdev=144.17 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=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7670, max= 8192, per=46.59%, avg=7931.00, stdev=369.11, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=17.21%, ctx=53, 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=160525: Sat Aug 8 11:50:00 2026 write: IOPS=1, BW=6857KiB/s (7022kB/s)(12.0MiB/1792msec); 0 zone resets clat (msec): min=320, max=797, avg=576.97, stdev=240.88 lat (msec): min=320, max=798, avg=577.25, stdev=240.87 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 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=15340, max=15340, per=90.12%, avg=15340.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=19.82%, ctx=78, 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=8511KiB/s (8715kB/s), 2128KiB/s-6763KiB/s (2179kB/s-6925kB/s), io=16.0MiB (16.8MB), run=1817-1925msec WRITE: bw=16.6MiB/s (17.4MB/s), 4256KiB/s-7416KiB/s (4358kB/s-7594kB/s), io=32.0MiB (33.6MB), run=1657-1925msec