== sanity test 398b: DIO and buffer IO race ============== 01:13:37 (1789449217) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.49106 s, 11.2 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=145770: Tue Sep 15 01:15:38 2026 read: IOPS=13, BW=55.5KiB/s (56.8kB/s)(5992KiB/108023msec) clat (usec): min=30, max=541482, avg=35077.44, stdev=29066.84 lat (usec): min=31, max=541483, avg=35079.09, stdev=29066.84 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 2376], 20.00th=[ 16712], | 30.00th=[ 20317], 40.00th=[ 24511], 50.00th=[ 29754], 60.00th=[ 34866], | 70.00th=[ 42206], 80.00th=[ 51119], 90.00th=[ 67634], 95.00th=[ 83362], | 99.00th=[125305], 99.50th=[156238], 99.90th=[229639], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 6, max= 110, per=24.89%, avg=55.01, stdev=21.67, samples=213 iops : min= 1, max= 27, avg=13.10, stdev= 5.45, samples=213 write: IOPS=14, BW=58.3KiB/s (59.7kB/s)(6296KiB/108023msec); 0 zone resets clat (usec): min=904, max=419409, avg=35071.64, stdev=37634.96 lat (usec): min=905, max=419410, avg=35076.06, stdev=37634.56 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1532], 20.00th=[ 3523], | 30.00th=[ 7308], 40.00th=[ 17433], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[105382], | 99.00th=[147850], 99.50th=[210764], 99.90th=[316670], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 112, per=25.11%, avg=58.00, stdev=21.99, samples=212 iops : min= 1, max= 28, avg=13.86, stdev= 5.55, samples=212 lat (usec) : 50=0.91%, 100=3.22%, 250=0.52%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=6.35%, 4=4.92%, 10=6.54%, 20=13.44%, 50=40.14% lat (msec) : 100=19.89%, 250=3.65%, 500=0.16%, 750=0.03% cpu : usr=0.08%, sys=5.66%, ctx=6510, 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=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=145771: Tue Sep 15 01:15:38 2026 read: IOPS=13, BW=54.8KiB/s (56.1kB/s)(5940KiB/108408msec) clat (usec): min=26, max=279304, avg=36037.84, stdev=26812.47 lat (usec): min=26, max=279306, avg=36038.99, stdev=26812.46 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 8717], 20.00th=[ 17171], | 30.00th=[ 21627], 40.00th=[ 26084], 50.00th=[ 31065], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[128451], 99.50th=[158335], 99.90th=[210764], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 6, max= 111, per=24.47%, avg=54.08, stdev=21.83, samples=214 iops : min= 1, max= 27, avg=12.87, stdev= 5.49, samples=214 write: IOPS=14, BW=58.6KiB/s (59.0kB/s)(6348KiB/108408msec); 0 zone resets clat (usec): min=979, max=513539, avg=34408.00, stdev=37276.19 lat (usec): min=988, max=513540, avg=34409.98, stdev=37275.89 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1680], 20.00th=[ 3621], | 30.00th=[ 7701], 40.00th=[ 15664], 50.00th=[ 24249], 60.00th=[ 33424], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 80217], 95.00th=[103285], | 99.00th=[162530], 99.50th=[187696], 99.90th=[274727], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 7, max= 143, per=25.07%, avg=57.92, stdev=24.03, samples=213 iops : min= 1, max= 35, avg=13.83, stdev= 6.02, samples=213 lat (usec) : 50=0.72%, 100=3.35%, 250=0.39%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=5.99%, 4=4.98%, 10=6.90%, 20=13.38%, 50=39.81% lat (msec) : 100=20.35%, 250=3.84%, 500=0.07%, 750=0.03% cpu : usr=0.07%, sys=5.70%, ctx=6474, 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=145772: Tue Sep 15 01:15:38 2026 read: IOPS=13, BW=55.5KiB/s (56.9kB/s)(6028KiB/108573msec) clat (usec): min=24, max=234280, avg=34120.67, stdev=26460.15 lat (usec): min=24, max=234281, avg=34122.53, stdev=26459.66 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 221], 20.00th=[ 15664], | 30.00th=[ 20579], 40.00th=[ 24773], 50.00th=[ 28705], 60.00th=[ 33817], | 70.00th=[ 40633], 80.00th=[ 51119], 90.00th=[ 64750], 95.00th=[ 79168], | 99.00th=[132645], 99.50th=[152044], 99.90th=[231736], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 14, max= 126, per=25.02%, avg=55.30, stdev=22.61, samples=212 iops : min= 3, max= 31, avg=13.17, stdev= 5.68, samples=212 write: IOPS=14, BW=57.7KiB/s (59.0kB/s)(6260KiB/108573msec); 0 zone resets clat (usec): min=909, max=967555, avg=36327.13, stdev=43098.57 lat (usec): min=911, max=967557, avg=36330.60, stdev=43098.15 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1156], 10.00th=[ 1598], 20.00th=[ 3818], | 30.00th=[ 8029], 40.00th=[ 17433], 50.00th=[ 27657], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 61604], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[164627], 99.50th=[183501], 99.90th=[375391], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 15, max= 111, per=24.80%, avg=57.28, stdev=21.96, samples=212 iops : min= 3, max= 27, avg=13.67, stdev= 5.51, samples=212 lat (usec) : 50=1.20%, 100=3.35%, 250=0.36%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.89%, 4=4.43%, 10=6.35%, 20=13.90%, 50=39.13% lat (msec) : 100=21.32%, 250=3.61%, 500=0.07%, 1000=0.03% cpu : usr=0.09%, sys=5.54%, ctx=6608, 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=145773: Tue Sep 15 01:15:38 2026 read: IOPS=14, BW=56.2KiB/s (57.6kB/s)(6052KiB/107605msec) clat (usec): min=33, max=178719, avg=34052.62, stdev=24782.53 lat (usec): min=33, max=178721, avg=34053.86, stdev=24782.51 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 619], 20.00th=[ 15795], | 30.00th=[ 20579], 40.00th=[ 24773], 50.00th=[ 29492], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 51119], 90.00th=[ 64750], 95.00th=[ 79168], | 99.00th=[119014], 99.50th=[137364], 99.90th=[177210], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 7, max= 127, per=25.60%, avg=56.58, stdev=21.38, samples=210 iops : min= 1, max= 31, avg=13.50, stdev= 5.38, samples=210 write: IOPS=14, BW=57.0KiB/s (59.3kB/s)(6236KiB/107605msec); 0 zone resets clat (usec): min=934, max=1005.6k, avg=35769.69, stdev=42830.66 lat (usec): min=935, max=1005.6k, avg=35771.44, stdev=42830.80 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1188], 10.00th=[ 1762], | 20.00th=[ 3752], 30.00th=[ 8455], 40.00th=[ 17695], | 50.00th=[ 27395], 60.00th=[ 36439], 70.00th=[ 47449], | 80.00th=[ 60556], 90.00th=[ 80217], 95.00th=[ 101188], | 99.00th=[ 139461], 99.50th=[ 177210], 99.90th=[ 325059], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 127, per=25.10%, avg=57.99, stdev=22.15, samples=211 iops : min= 1, max= 31, avg=13.85, stdev= 5.59, samples=211 lat (usec) : 50=0.98%, 100=3.42%, 250=0.42%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.20% lat (msec) : 2=5.92%, 4=4.56%, 10=6.22%, 20=13.70%, 50=40.14% lat (msec) : 100=20.74%, 250=3.42%, 500=0.10%, 2000=0.03% cpu : usr=0.08%, sys=5.83%, ctx=6478, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=221KiB/s (226kB/s), 54.8KiB/s-56.2KiB/s (56.1kB/s-57.6kB/s), io=23.4MiB (24.6MB), run=107605-108573msec WRITE: bw=232KiB/s (237kB/s), 57.7KiB/s-58.6KiB/s (59.0kB/s-59.0kB/s), io=24.6MiB (25.7MB), run=107605-108573msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145765: Tue Sep 15 01:17:45 2026 read: IOPS=6, BW=25.6KiB/s (26.2kB/s)(5992KiB/234151msec) clat (msec): min=4, max=545, avg=28.91, stdev=32.64 lat (msec): min=4, max=545, avg=28.91, stdev=32.64 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 60], 95.00th=[ 87], | 99.00th=[ 163], 99.50th=[ 209], 99.90th=[ 330], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 104, per=27.18%, avg=27.72, stdev=18.41, samples=420 iops : min= 1, max= 26, avg= 6.33, stdev= 4.63, samples=420 write: IOPS=6, BW=26.9KiB/s (27.5kB/s)(6296KiB/234151msec); 0 zone resets clat (msec): min=32, max=478, avg=121.05, stdev=55.96 lat (msec): min=32, max=478, avg=121.05, stdev=55.96 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 109], 60.00th=[ 121], | 70.00th=[ 136], 80.00th=[ 155], 90.00th=[ 192], 95.00th=[ 226], | 99.00th=[ 313], 99.50th=[ 388], 99.90th=[ 447], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 56, per=25.02%, avg=26.52, stdev=11.14, samples=460 iops : min= 1, max= 14, avg= 6.03, stdev= 2.88, samples=460 lat (msec) : 10=5.76%, 20=20.51%, 50=16.86%, 100=25.88%, 250=29.07% lat (msec) : 500=1.89%, 750=0.03% cpu : usr=0.04%, sys=1.25%, ctx=5212, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145766: Tue Sep 15 01:17:45 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(5940KiB/235077msec) clat (msec): min=5, max=820, avg=29.81, stdev=36.47 lat (msec): min=5, max=820, avg=29.81, stdev=36.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 62], 95.00th=[ 86], | 99.00th=[ 161], 99.50th=[ 230], 99.90th=[ 334], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 95, per=26.58%, avg=27.11, stdev=17.72, samples=425 iops : min= 1, max= 23, avg= 6.17, stdev= 4.49, samples=425 write: IOPS=6, BW=27.0KiB/s (27.7kB/s)(6348KiB/235077msec); 0 zone resets clat (msec): min=36, max=441, avg=120.04, stdev=51.11 lat (msec): min=36, max=441, avg=120.04, stdev=51.11 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 79], | 30.00th=[ 89], 40.00th=[ 99], 50.00th=[ 109], 60.00th=[ 122], | 70.00th=[ 136], 80.00th=[ 157], 90.00th=[ 186], 95.00th=[ 213], | 99.00th=[ 288], 99.50th=[ 326], 99.90th=[ 418], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 63, per=25.12%, avg=26.63, stdev=10.82, samples=462 iops : min= 1, max= 15, avg= 6.06, stdev= 2.77, samples=462 lat (msec) : 10=5.50%, 20=19.37%, 50=17.71%, 100=25.78%, 250=30.24% lat (msec) : 500=1.37%, 1000=0.03% cpu : usr=0.05%, sys=1.17%, ctx=5164, 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=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=145768: Tue Sep 15 01:17:45 2026 read: IOPS=6, BW=25.7KiB/s (26.4kB/s)(6028KiB/234198msec) clat (msec): min=4, max=344, avg=28.88, stdev=29.18 lat (msec): min=4, max=344, avg=28.89, stdev=29.18 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 63], 95.00th=[ 83], | 99.00th=[ 132], 99.50th=[ 169], 99.90th=[ 338], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 104, per=27.01%, avg=27.55, stdev=19.14, samples=425 iops : min= 1, max= 26, avg= 6.29, stdev= 4.86, samples=425 write: IOPS=6, BW=26.7KiB/s (27.4kB/s)(6260KiB/234198msec); 0 zone resets clat (msec): min=38, max=932, avg=121.62, stdev=61.25 lat (msec): min=38, max=932, avg=121.63, stdev=61.25 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 96], 50.00th=[ 107], 60.00th=[ 121], | 70.00th=[ 136], 80.00th=[ 155], 90.00th=[ 197], 95.00th=[ 234], | 99.00th=[ 342], 99.50th=[ 388], 99.90th=[ 477], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 55, per=24.99%, avg=26.49, stdev=11.15, samples=458 iops : min= 1, max= 13, avg= 6.02, stdev= 2.87, samples=458 lat (msec) : 10=5.76%, 20=20.15%, 50=16.54%, 100=27.90%, 250=27.70% lat (msec) : 500=1.92%, 1000=0.03% cpu : usr=0.04%, sys=1.28%, ctx=5275, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145769: Tue Sep 15 01:17:45 2026 read: IOPS=6, BW=25.0KiB/s (26.6kB/s)(6052KiB/233059msec) clat (msec): min=5, max=360, avg=29.07, stdev=30.15 lat (msec): min=5, max=360, avg=29.08, stdev=30.15 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 61], 95.00th=[ 88], | 99.00th=[ 150], 99.50th=[ 207], 99.90th=[ 268], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 128, per=27.50%, avg=28.05, stdev=18.95, samples=419 iops : min= 1, max= 32, avg= 6.42, stdev= 4.79, samples=419 write: IOPS=6, BW=26.8KiB/s (27.4kB/s)(6236KiB/233059msec); 0 zone resets clat (msec): min=39, max=995, avg=121.08, stdev=58.70 lat (msec): min=39, max=995, avg=121.08, stdev=58.70 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 67], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 108], 60.00th=[ 122], | 70.00th=[ 136], 80.00th=[ 155], 90.00th=[ 190], 95.00th=[ 226], | 99.00th=[ 313], 99.50th=[ 368], 99.90th=[ 439], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 56, per=24.89%, avg=26.38, stdev=10.97, samples=458 iops : min= 1, max= 14, avg= 6.00, stdev= 2.83, samples=458 lat (msec) : 10=5.53%, 20=20.38%, 50=17.51%, 100=25.88%, 250=28.94% lat (msec) : 500=1.73%, 1000=0.03% cpu : usr=0.04%, sys=1.27%, ctx=5306, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=102KiB/s (105kB/s), 25.3KiB/s-25.0KiB/s (25.9kB/s-26.6kB/s), io=23.4MiB (24.6MB), run=233059-235077msec WRITE: bw=107KiB/s (110kB/s), 26.7KiB/s-27.0KiB/s (27.4kB/s-27.7kB/s), io=24.6MiB (25.7MB), run=233059-235077msec 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=145823: Tue Sep 15 01:18:18 2026 read: IOPS=16, BW=256KiB/s (263kB/s)(5920KiB/23080msec) clat (usec): min=36, max=173422, avg=30349.81, stdev=29717.02 lat (usec): min=37, max=173422, avg=30355.32, stdev=29723.39 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 48], 10.00th=[ 55], 20.00th=[ 66], | 30.00th=[ 1811], 40.00th=[ 20841], 50.00th=[ 26870], 60.00th=[ 32637], | 70.00th=[ 39584], 80.00th=[ 50070], 90.00th=[ 70779], 95.00th=[ 82314], | 99.00th=[139461], 99.50th=[170918], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 94, max= 669, per=26.59%, avg=261.07, stdev=116.98, samples=44 iops : min= 5, max= 41, avg=15.59, stdev= 7.37, samples=44 write: IOPS=17, BW=276KiB/s (283kB/s)(6368KiB/23080msec); 0 zone resets clat (usec): min=1372, max=255956, avg=29350.19, stdev=34170.25 lat (usec): min=1373, max=255958, avg=29352.01, stdev=34170.33 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1647], 10.00th=[ 1991], 20.00th=[ 4146], | 30.00th=[ 6063], 40.00th=[ 9503], 50.00th=[ 15401], 60.00th=[ 26084], | 70.00th=[ 36439], 80.00th=[ 50594], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[149947], 99.50th=[235930], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 95, max= 474, per=26.68%, avg=275.64, stdev=101.40, samples=45 iops : min= 5, max= 29, avg=16.51, stdev= 6.41, samples=45 lat (usec) : 50=2.47%, 100=9.24%, 250=1.82%, 500=0.26%, 750=0.13% lat (msec) : 2=5.86%, 4=4.69%, 10=11.46%, 20=10.81%, 50=32.94% lat (msec) : 100=17.45%, 250=2.73%, 500=0.13% cpu : usr=0.10%, sys=6.58%, ctx=1341, 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=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=145824: Tue Sep 15 01:18:18 2026 read: IOPS=14, BW=236KiB/s (241kB/s)(5744KiB/24379msec) clat (usec): min=32, max=235822, avg=33027.93, stdev=32519.88 lat (usec): min=32, max=235822, avg=33032.46, stdev=32518.11 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 51], 10.00th=[ 60], 20.00th=[ 72], | 30.00th=[ 12518], 40.00th=[ 21890], 50.00th=[ 27132], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 56886], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[152044], 99.50th=[191890], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 434, per=23.99%, avg=235.62, stdev=96.09, samples=48 iops : min= 1, max= 27, avg=14.02, stdev= 6.13, samples=48 write: IOPS=16, BW=268KiB/s (275kB/s)(6544KiB/24379msec); 0 zone resets clat (usec): min=1320, max=151558, avg=29992.56, stdev=31456.10 lat (usec): min=1323, max=151560, avg=29994.45, stdev=31456.04 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1631], 10.00th=[ 2180], 20.00th=[ 3851], | 30.00th=[ 6259], 40.00th=[ 9765], 50.00th=[ 17433], 60.00th=[ 26870], | 70.00th=[ 40633], 80.00th=[ 56886], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[124257], 99.50th=[133694], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 94, max= 537, per=25.94%, avg=267.96, stdev=101.06, samples=48 iops : min= 5, max= 33, avg=16.06, stdev= 6.43, samples=48 lat (usec) : 50=2.08%, 100=9.11%, 250=0.91%, 500=0.26% lat (msec) : 2=5.08%, 4=6.77%, 10=10.81%, 20=10.29%, 50=29.69% lat (msec) : 100=21.09%, 250=3.91% cpu : usr=0.08%, sys=6.35%, ctx=1363, 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=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=145825: Tue Sep 15 01:18:18 2026 read: IOPS=16, BW=259KiB/s (265kB/s)(6256KiB/24182msec) clat (usec): min=36, max=205833, avg=32052.13, stdev=28862.95 lat (usec): min=37, max=205835, avg=32053.81, stdev=28862.69 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 75], | 30.00th=[ 15795], 40.00th=[ 22152], 50.00th=[ 29754], 60.00th=[ 35914], | 70.00th=[ 42730], 80.00th=[ 52691], 90.00th=[ 68682], 95.00th=[ 80217], | 99.00th=[115868], 99.50th=[156238], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 93, max= 467, per=26.59%, avg=261.13, stdev=100.70, samples=47 iops : min= 5, max= 29, avg=15.62, stdev= 6.36, samples=47 write: IOPS=15, BW=249KiB/s (255kB/s)(6032KiB/24182msec); 0 zone resets clat (usec): min=1196, max=185612, avg=30675.87, stdev=34831.23 lat (usec): min=1198, max=185613, avg=30677.93, stdev=34831.22 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1631], 10.00th=[ 1876], 20.00th=[ 3654], | 30.00th=[ 5669], 40.00th=[ 9896], 50.00th=[ 18220], 60.00th=[ 26346], | 70.00th=[ 36963], 80.00th=[ 53740], 90.00th=[ 82314], 95.00th=[104334], | 99.00th=[158335], 99.50th=[177210], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 95, max= 501, per=23.92%, avg=247.13, stdev=97.26, samples=47 iops : min= 5, max= 31, avg=14.72, stdev= 6.18, samples=47 lat (usec) : 50=1.69%, 100=10.42%, 250=0.78%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=5.99%, 4=4.56%, 10=9.51%, 20=11.20%, 50=32.29% lat (msec) : 100=19.01%, 250=3.91% cpu : usr=0.08%, sys=6.15%, ctx=1379, 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=145826: Tue Sep 15 01:18:18 2026 read: IOPS=15, BW=252KiB/s (258kB/s)(6032KiB/23962msec) clat (usec): min=29, max=180984, avg=30245.40, stdev=28619.25 lat (usec): min=30, max=180985, avg=30246.60, stdev=28619.24 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 50], 10.00th=[ 56], 20.00th=[ 65], | 30.00th=[ 7373], 40.00th=[ 19792], 50.00th=[ 27919], 60.00th=[ 33817], | 70.00th=[ 40109], 80.00th=[ 51643], 90.00th=[ 64226], 95.00th=[ 83362], | 99.00th=[122160], 99.50th=[141558], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 31, max= 533, per=25.48%, avg=250.17, stdev=112.35, samples=47 iops : min= 1, max= 33, avg=14.94, stdev= 7.17, samples=47 write: IOPS=16, BW=261KiB/s (267kB/s)(6256KiB/23962msec); 0 zone resets clat (usec): min=1315, max=296841, avg=31687.71, stdev=37240.60 lat (usec): min=1317, max=296842, avg=31689.43, stdev=37240.59 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1614], 10.00th=[ 1860], 20.00th=[ 3425], | 30.00th=[ 6390], 40.00th=[ 9503], 50.00th=[ 18220], 60.00th=[ 29754], | 70.00th=[ 39584], 80.00th=[ 53740], 90.00th=[ 79168], 95.00th=[104334], | 99.00th=[156238], 99.50th=[250610], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 64, max= 509, per=25.27%, avg=261.02, stdev=98.92, samples=47 iops : min= 4, max= 31, avg=15.62, stdev= 6.21, samples=47 lat (usec) : 50=2.86%, 100=10.29%, 250=1.04%, 750=0.13%, 1000=0.13% lat (msec) : 2=5.34%, 4=6.25%, 10=9.38%, 20=10.42%, 50=31.12% lat (msec) : 100=18.75%, 250=4.17%, 500=0.13% cpu : usr=0.08%, sys=6.46%, ctx=1373, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=982KiB/s (1006kB/s), 236KiB/s-259KiB/s (241kB/s-265kB/s), io=23.4MiB (24.5MB), run=23080-24379msec WRITE: bw=1034KiB/s (1058kB/s), 249KiB/s-276KiB/s (255kB/s-283kB/s), io=24.6MiB (25.8MB), run=23080-24379msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145827: Tue Sep 15 01:19:01 2026 read: IOPS=5, BW=87.9KiB/s (89.0kB/s)(5920KiB/67377msec) clat (msec): min=6, max=193, avg=34.42, stdev=27.39 lat (msec): min=6, max=193, avg=34.42, stdev=27.39 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 49], 90.00th=[ 71], 95.00th=[ 95], | 99.00th=[ 132], 99.50th=[ 180], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 31, max= 382, per=26.85%, avg=94.50, stdev=60.74, samples=123 iops : min= 1, max= 23, avg= 5.15, stdev= 3.82, samples=123 write: IOPS=5, BW=94.5KiB/s (96.8kB/s)(6368KiB/67377msec); 0 zone resets clat (msec): min=40, max=390, avg=137.07, stdev=56.28 lat (msec): min=40, max=390, avg=137.07, stdev=56.28 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 64], 10.00th=[ 77], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 115], 50.00th=[ 126], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 178], 90.00th=[ 209], 95.00th=[ 245], | 99.00th=[ 300], 99.50th=[ 388], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 190, per=25.38%, avg=93.90, stdev=36.04, samples=133 iops : min= 1, max= 11, avg= 5.11, stdev= 2.32, samples=133 lat (msec) : 10=1.82%, 20=14.71%, 50=22.92%, 100=20.83%, 250=37.50% lat (msec) : 500=2.21% cpu : usr=0.03%, sys=1.17%, ctx=1233, 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=145828: Tue Sep 15 01:19:01 2026 read: IOPS=5, BW=84.5KiB/s (86.6kB/s)(5744KiB/67948msec) clat (msec): min=6, max=255, avg=38.33, stdev=38.19 lat (msec): min=6, max=255, avg=38.33, stdev=38.19 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 84], 95.00th=[ 115], | 99.00th=[ 222], 99.50th=[ 241], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 411, per=27.03%, avg=95.14, stdev=62.95, samples=118 iops : min= 1, max= 25, avg= 5.17, stdev= 3.96, samples=118 write: IOPS=6, BW=96.3KiB/s (98.6kB/s)(6544KiB/67948msec); 0 zone resets clat (msec): min=43, max=396, avg=131.84, stdev=55.84 lat (msec): min=43, max=396, avg=131.85, stdev=55.84 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 101], 40.00th=[ 111], 50.00th=[ 123], 60.00th=[ 134], | 70.00th=[ 146], 80.00th=[ 171], 90.00th=[ 203], 95.00th=[ 241], | 99.00th=[ 309], 99.50th=[ 376], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 191, per=26.36%, avg=97.54, stdev=38.01, samples=131 iops : min= 1, max= 11, avg= 5.34, stdev= 2.45, samples=131 lat (msec) : 10=1.95%, 20=13.93%, 50=21.48%, 100=22.66%, 250=37.50% lat (msec) : 500=2.47% cpu : usr=0.02%, sys=1.20%, ctx=1321, 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=145829: Tue Sep 15 01:19:01 2026 read: IOPS=5, BW=93.6KiB/s (95.9kB/s)(6256KiB/66830msec) clat (msec): min=7, max=242, avg=35.73, stdev=33.42 lat (msec): min=7, max=242, avg=35.73, stdev=33.42 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 105], | 99.00th=[ 197], 99.50th=[ 241], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 287, per=28.36%, avg=99.81, stdev=62.07, samples=124 iops : min= 1, max= 17, avg= 5.48, stdev= 3.89, samples=124 write: IOPS=5, BW=90.3KiB/s (92.4kB/s)(6032KiB/66830msec); 0 zone resets clat (msec): min=34, max=350, avg=139.65, stdev=58.40 lat (msec): min=34, max=350, avg=139.65, stdev=58.40 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 64], 10.00th=[ 78], 20.00th=[ 88], | 30.00th=[ 104], 40.00th=[ 116], 50.00th=[ 127], 60.00th=[ 146], | 70.00th=[ 161], 80.00th=[ 188], 90.00th=[ 226], 95.00th=[ 249], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 191, per=24.14%, avg=89.31, stdev=36.00, samples=132 iops : min= 1, max= 11, avg= 4.82, stdev= 2.30, samples=132 lat (msec) : 10=2.34%, 20=16.15%, 50=24.09%, 100=19.27%, 250=36.07% lat (msec) : 500=2.08% cpu : usr=0.04%, sys=1.30%, ctx=1400, 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=145830: Tue Sep 15 01:19:01 2026 read: IOPS=5, BW=89.3KiB/s (91.5kB/s)(6032KiB/67535msec) clat (msec): min=5, max=210, avg=35.76, stdev=31.94 lat (msec): min=5, max=210, avg=35.76, stdev=31.94 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 79], 95.00th=[ 106], | 99.00th=[ 169], 99.50th=[ 190], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 31, max= 281, per=28.11%, avg=98.93, stdev=61.62, samples=118 iops : min= 1, max= 17, avg= 5.42, stdev= 3.90, samples=118 write: IOPS=5, BW=92.6KiB/s (94.9kB/s)(6256KiB/67535msec); 0 zone resets clat (msec): min=28, max=445, avg=137.57, stdev=56.98 lat (msec): min=28, max=445, avg=137.57, stdev=56.98 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 68], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 105], 40.00th=[ 116], 50.00th=[ 127], 60.00th=[ 140], | 70.00th=[ 155], 80.00th=[ 178], 90.00th=[ 215], 95.00th=[ 247], | 99.00th=[ 330], 99.50th=[ 372], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 31, max= 190, per=24.80%, avg=91.74, stdev=35.81, samples=133 iops : min= 1, max= 11, avg= 4.97, stdev= 2.32, samples=133 lat (msec) : 10=2.86%, 20=15.23%, 50=22.53%, 100=19.14%, 250=38.02% lat (msec) : 500=2.21% cpu : usr=0.04%, sys=1.06%, ctx=1211, 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=353KiB/s (361kB/s), 84.5KiB/s-93.6KiB/s (86.6kB/s-95.9kB/s), io=23.4MiB (24.5MB), run=66830-67948msec WRITE: bw=371KiB/s (380kB/s), 90.3KiB/s-96.3KiB/s (92.4kB/s-98.6kB/s), io=24.6MiB (25.8MB), run=66830-67948msec 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=145846: Tue Sep 15 01:19:12 2026 read: IOPS=2, BW=2568KiB/s (2630kB/s)(7168KiB/2791msec) clat (usec): min=520, max=292520, avg=195875.77, stdev=97115.38 lat (usec): min=522, max=292521, avg=195877.15, stdev=97115.27 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[173016], | 30.00th=[185598], 40.00th=[185598], 50.00th=[206570], 60.00th=[231736], | 70.00th=[231736], 80.00th=[278922], 90.00th=[291505], 95.00th=[291505], | 99.00th=[291505], 99.50th=[291505], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 1841, max= 4071, per=58.88%, avg=2905.25, stdev=1166.07, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1834KiB/s (1878kB/s)(5120KiB/2791msec); 0 zone resets clat (msec): min=127, max=444, avg=271.23, stdev=135.28 lat (msec): min=127, max=444, avg=271.29, stdev=135.27 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 355], 80.00th=[ 355], 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= 1841, max= 5807, per=55.36%, avg=3824.00, stdev=2804.39, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=23.08%, ctx=200, 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=145847: Tue Sep 15 01:19:12 2026 read: IOPS=0, BW=493KiB/s (505kB/s)(2048KiB/4150msec) clat (usec): min=3735, max=87478, avg=45607.01, stdev=59215.87 lat (usec): min=3736, max=87481, avg=45608.63, stdev=59216.78 clat percentiles (usec): | 1.00th=[ 3720], 5.00th=[ 3720], 10.00th=[ 3720], 20.00th=[ 3720], | 30.00th=[ 3720], 40.00th=[ 3720], 50.00th=[ 3720], 60.00th=[87557], | 70.00th=[87557], 80.00th=[87557], 90.00th=[87557], 95.00th=[87557], | 99.00th=[87557], 99.50th=[87557], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 1750, max= 1965, per=37.65%, avg=1857.50, stdev=152.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2467KiB/s (2527kB/s)(10.0MiB/4150msec); 0 zone resets clat (msec): min=148, max=876, avg=400.88, stdev=278.68 lat (msec): min=148, max=876, avg=400.96, stdev=278.69 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 184], 50.00th=[ 249], 60.00th=[ 397], | 70.00th=[ 456], 80.00th=[ 567], 90.00th=[ 827], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1965, max= 4079, per=45.77%, avg=3161.80, stdev=1083.54, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 4=8.33%, 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=17.02%, ctx=175, 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=145848: Tue Sep 15 01:19:12 2026 read: IOPS=2, BW=2365KiB/s (2422kB/s)(6144KiB/2598msec) clat (usec): min=413, max=238418, avg=108262.89, stdev=118921.12 lat (usec): min=414, max=238419, avg=108263.89, stdev=118921.03 clat percentiles (usec): | 1.00th=[ 412], 5.00th=[ 412], 10.00th=[ 412], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 553], 50.00th=[ 553], 60.00th=[193987], | 70.00th=[217056], 80.00th=[217056], 90.00th=[238027], 95.00th=[238027], | 99.00th=[238027], 99.50th=[238027], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 1935, max= 6107, per=81.50%, avg=4021.00, stdev=2950.05, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2365KiB/s (2422kB/s)(6144KiB/2598msec); 0 zone resets clat (msec): min=70, max=821, avg=313.88, stdev=262.37 lat (msec): min=70, max=821, avg=313.96, stdev=262.37 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 251], 50.00th=[ 251], 60.00th=[ 262], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1935, max= 4071, per=47.24%, avg=3263.67, stdev=1159.51, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 1000=8.33% cpu : usr=0.04%, sys=18.56%, ctx=175, 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=145849: Tue Sep 15 01:19:12 2026 read: IOPS=1, BW=1778KiB/s (1820kB/s)(5120KiB/2880msec) clat (usec): min=556, max=282740, avg=57595.31, stdev=125865.90 lat (usec): min=557, max=282742, avg=57596.46, stdev=125866.40 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 685], 60.00th=[ 685], | 70.00th=[ 3425], 80.00th=[ 3425], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7742, max= 7742, per=100.00%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2489KiB/s (2549kB/s)(7168KiB/2880msec); 0 zone resets clat (msec): min=152, max=740, avg=359.53, stdev=222.77 lat (msec): min=152, max=740, avg=360.05, stdev=222.44 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 192], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 266], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 592], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1841, max= 4071, per=35.30%, avg=2438.75, stdev=1089.41, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=25.00% lat (msec) : 4=8.33%, 250=25.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=19.07%, ctx=202, 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=4935KiB/s (5053kB/s), 493KiB/s-2568KiB/s (505kB/s-2630kB/s), io=20.0MiB (20.0MB), run=2598-4150msec WRITE: bw=6909KiB/s (7075kB/s), 1834KiB/s-2489KiB/s (1878kB/s-2549kB/s), io=28.0MiB (29.4MB), run=2598-4150msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145851: Tue Sep 15 01:19:13 2026 read: IOPS=1, BW=2010KiB/s (2058kB/s)(7168KiB/3567msec) clat (msec): min=51, max=1050, avg=255.95, stdev=355.96 lat (msec): min=51, max=1050, avg=255.95, stdev=355.96 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 52], 10.00th=[ 52], 20.00th=[ 80], | 30.00th=[ 99], 40.00th=[ 99], 50.00th=[ 125], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 245], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1532, max= 4079, per=60.72%, avg=3211.33, stdev=1454.61, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1435KiB/s (1470kB/s)(5120KiB/3567msec); 0 zone resets clat (msec): min=190, max=586, avg=339.79, stdev=147.09 lat (msec): min=190, max=586, avg=339.90, stdev=147.14 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2011, max= 2043, per=27.43%, avg=2031.00, stdev=17.44, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.22%, ctx=64, 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=145852: Tue Sep 15 01:19:13 2026 read: IOPS=0, BW=529KiB/s (542kB/s)(2048KiB/3872msec) clat (msec): min=81, max=104, avg=93.03, stdev=15.98 lat (msec): min=81, max=104, avg=93.03, stdev=15.98 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 82], 60.00th=[ 105], | 70.00th=[ 105], 80.00th=[ 105], 90.00th=[ 105], 95.00th=[ 105], | 99.00th=[ 105], 99.50th=[ 105], 99.90th=[ 105], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 1544, max= 2043, per=33.91%, avg=1793.50, stdev=352.85, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2645KiB/s (2708kB/s)(10.0MiB/3872msec); 0 zone resets clat (msec): min=146, max=733, avg=360.57, stdev=191.04 lat (msec): min=146, max=733, avg=360.65, stdev=191.04 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 180], | 30.00th=[ 230], 40.00th=[ 284], 50.00th=[ 288], 60.00th=[ 313], | 70.00th=[ 321], 80.00th=[ 531], 90.00th=[ 584], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 2039, max= 4087, per=41.21%, avg=3051.00, stdev=1108.81, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=6.59%, ctx=146, 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=145853: Tue Sep 15 01:19:13 2026 read: IOPS=1, BW=1812KiB/s (1856kB/s)(6144KiB/3390msec) clat (msec): min=98, max=188, avg=130.96, stdev=35.99 lat (msec): min=98, max=188, avg=130.96, stdev=35.99 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 100], | 30.00th=[ 100], 40.00th=[ 118], 50.00th=[ 118], 60.00th=[ 122], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 4079, max= 6119, per=96.41%, avg=5099.00, stdev=1442.50, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1812KiB/s (1856kB/s)(6144KiB/3390msec); 0 zone resets clat (msec): min=142, max=1138, avg=426.19, stdev=395.28 lat (msec): min=142, max=1138, avg=426.27, stdev=395.27 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 222], | 70.00th=[ 651], 80.00th=[ 651], 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= 2011, max= 3200, per=31.38%, avg=2323.25, stdev=584.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=66.67%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=4.51%, ctx=68, 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=145854: Tue Sep 15 01:19:13 2026 read: IOPS=1, BW=1367KiB/s (1400kB/s)(5120KiB/3746msec) clat (msec): min=87, max=183, avg=116.80, stdev=39.82 lat (msec): min=87, max=183, avg=116.80, stdev=39.82 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 88], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 103], 60.00th=[ 103], | 70.00th=[ 123], 80.00th=[ 123], 90.00th=[ 184], 95.00th=[ 184], | 99.00th=[ 184], 99.50th=[ 184], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 2043, max= 6119, per=77.16%, avg=4081.00, stdev=2882.17, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1914KiB/s (1959kB/s)(7168KiB/3746msec); 0 zone resets clat (msec): min=189, max=1013, avg=444.38, stdev=278.81 lat (msec): min=189, max=1013, avg=444.65, stdev=278.73 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 245], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 359], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 567], 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= 1845, max= 4079, per=32.46%, avg=2403.40, stdev=940.23, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.73%, ctx=77, 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=5289KiB/s (5416kB/s), 529KiB/s-2010KiB/s (542kB/s-2058kB/s), io=20.0MiB (20.0MB), run=3390-3872msec WRITE: bw=7405KiB/s (7583kB/s), 1435KiB/s-2645KiB/s (1470kB/s-2708kB/s), io=28.0MiB (29.4MB), run=3390-3872msec 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=145860: Tue Sep 15 01:19:25 2026 read: IOPS=1, BW=4495KiB/s (4602kB/s)(12.0MiB/2734msec) clat (msec): min=524, max=1466, avg=891.30, stdev=504.23 lat (msec): min=524, max=1466, avg=891.30, stdev=504.23 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 5657, max= 8143, per=100.00%, avg=6900.00, stdev=1757.87, 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=3.55%, ctx=44, 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=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=145861: Tue Sep 15 01:19:25 2026 read: IOPS=0, BW=1248KiB/s (1278kB/s)(4096KiB/3282msec) clat (nsec): min=1203.9M, max=1203.9M, avg=1203863374.00, stdev= 0.00 lat (nsec): min=1203.9M, max=1203.9M, avg=1203865117.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2496KiB/s (2556kB/s)(8192KiB/3282msec); 0 zone resets clat (msec): min=885, max=1188, avg=1037.36, stdev=214.12 lat (msec): min=887, max=1189, avg=1038.53, stdev=214.04 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8143, max= 8143, per=81.56%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.93%, ctx=53, 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=145862: Tue Sep 15 01:19:25 2026 write: IOPS=2, BW=10.3MiB/s (10.8MB/s)(12.0MiB/1165msec); 0 zone resets clat (msec): min=297, max=475, avg=368.52, stdev=94.45 lat (msec): min=298, max=475, avg=368.86, stdev=94.30 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min=11330, max=11330, per=100.00%, avg=11330.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=11.86%, ctx=46, 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=145863: Tue Sep 15 01:19:25 2026 write: IOPS=1, BW=6440KiB/s (6595kB/s)(12.0MiB/1908msec); 0 zone resets clat (msec): min=293, max=861, avg=635.00, stdev=301.34 lat (msec): min=293, max=862, avg=635.58, stdev=301.36 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 6224, max= 8110, per=71.78%, avg=7167.00, stdev=1333.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=7.13%, ctx=48, 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=4992KiB/s (5112kB/s), 1248KiB/s-4495KiB/s (1278kB/s-4602kB/s), io=16.0MiB (16.8MB), run=2734-3282msec WRITE: bw=9984KiB/s (10.2MB/s), 2496KiB/s-10.3MiB/s (2556kB/s-10.8MB/s), io=32.0MiB (33.6MB), run=1165-3282msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145865: Tue Sep 15 01:19:26 2026 read: IOPS=1, BW=5697KiB/s (5834kB/s)(12.0MiB/2157msec) clat (msec): min=657, max=798, avg=718.28, stdev=72.28 lat (msec): min=657, max=798, avg=718.28, stdev=72.27 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 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= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, 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=17.25%, ctx=286, 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=145866: Tue Sep 15 01:19:26 2026 read: IOPS=0, BW=1633KiB/s (1672kB/s)(4096KiB/2509msec) clat (nsec): min=600162k, max=600162k, avg=600161595.00, stdev= 0.00 lat (nsec): min=600165k, max=600165k, avg=600164515.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 6059, max= 6059, per=92.79%, avg=6059.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3265KiB/s (3343kB/s)(8192KiB/2509msec); 0 zone resets clat (msec): min=669, max=1236, avg=952.82, stdev=401.35 lat (msec): min=669, max=1237, avg=953.30, stdev=401.55 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=[ 1234], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8192, max= 8192, per=80.76%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.24%, sys=3.95%, ctx=122, 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=145867: Tue Sep 15 01:19:26 2026 write: IOPS=1, BW=4503KiB/s (4611kB/s)(12.0MiB/2729msec); 0 zone resets clat (msec): min=603, max=1126, avg=908.26, stdev=272.20 lat (msec): min=603, max=1126, avg=908.61, stdev=272.23 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 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= 8175, max= 8175, per=80.59%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.90%, ctx=55, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145868: Tue Sep 15 01:19:26 2026 write: IOPS=0, BW=3804KiB/s (3896kB/s)(12.0MiB/3230msec); 0 zone resets clat (msec): min=279, max=2179, avg=1071.66, stdev=988.75 lat (msec): min=279, max=2179, avg=1072.24, stdev=988.51 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8175, max= 8175, per=80.59%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.30%, ctx=46, 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=6530KiB/s (6687kB/s), 1633KiB/s-5697KiB/s (1672kB/s-5834kB/s), io=16.0MiB (16.8MB), run=2157-2509msec WRITE: bw=9.91MiB/s (10.4MB/s), 3265KiB/s-4503KiB/s (3343kB/s-4611kB/s), io=32.0MiB (33.6MB), run=2509-3230msec