== sanity test 398b: DIO and buffer IO race ============== 20:29:32 (1786840172) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.12707 s, 16.1 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=154676: Sat Aug 15 20:30:31 2026 read: IOPS=30, BW=120KiB/s (123kB/s)(5992KiB/49929msec) clat (usec): min=25, max=645906, avg=17627.85, stdev=19776.80 lat (usec): min=26, max=645906, avg=17628.36, stdev=19776.82 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 4948], 10.00th=[ 7439], 20.00th=[ 9372], | 30.00th=[ 10945], 40.00th=[ 12911], 50.00th=[ 15139], 60.00th=[ 17433], | 70.00th=[ 20317], 80.00th=[ 23725], 90.00th=[ 29492], 95.00th=[ 36439], | 99.00th=[ 55313], 99.50th=[ 74974], 99.90th=[164627], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 6, max= 304, per=24.98%, avg=119.89, stdev=38.54, samples=99 iops : min= 1, max= 76, avg=29.58, stdev= 9.72, samples=99 write: IOPS=31, BW=126KiB/s (129kB/s)(6296KiB/49929msec); 0 zone resets clat (usec): min=722, max=100182, avg=14869.29, stdev=11786.21 lat (usec): min=723, max=100183, avg=14869.96, stdev=11786.23 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 2507], 10.00th=[ 3163], 20.00th=[ 4359], | 30.00th=[ 6849], 40.00th=[ 9896], 50.00th=[ 12125], 60.00th=[ 14877], | 70.00th=[ 18744], 80.00th=[ 23462], 90.00th=[ 30278], 95.00th=[ 36439], | 99.00th=[ 55313], 99.50th=[ 65799], 99.90th=[ 93848], 99.95th=[100140], | 99.99th=[100140] bw ( KiB/s): min= 55, max= 312, per=25.30%, avg=127.24, stdev=37.99, samples=98 iops : min= 13, max= 78, avg=31.42, stdev= 9.64, samples=98 lat (usec) : 50=0.20%, 100=0.59%, 250=0.98%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.39% lat (msec) : 2=1.04%, 4=7.62%, 10=21.78%, 20=38.70%, 50=27.34% lat (msec) : 100=1.20%, 250=0.07%, 750=0.03% cpu : usr=0.07%, sys=28.13%, ctx=9679, 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=154677: Sat Aug 15 20:30:31 2026 read: IOPS=30, BW=121KiB/s (124kB/s)(5940KiB/48951msec) clat (usec): min=35, max=83595, avg=16755.99, stdev=9864.45 lat (usec): min=36, max=83596, avg=16756.48, stdev=9864.49 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 5866], 10.00th=[ 7570], 20.00th=[ 9372], | 30.00th=[11076], 40.00th=[13042], 50.00th=[14877], 60.00th=[16909], | 70.00th=[19792], 80.00th=[22938], 90.00th=[28443], 95.00th=[34341], | 99.00th=[50070], 99.50th=[61604], 99.90th=[79168], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 6, max= 191, per=25.25%, avg=121.20, stdev=32.00, samples=97 iops : min= 1, max= 47, avg=29.90, stdev= 8.09, samples=97 write: IOPS=32, BW=130KiB/s (133kB/s)(6348KiB/48951msec); 0 zone resets clat (usec): min=763, max=645656, avg=15104.04, stdev=20375.87 lat (usec): min=763, max=645656, avg=15105.07, stdev=20375.83 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 2540], 10.00th=[ 3032], 20.00th=[ 4113], | 30.00th=[ 6194], 40.00th=[ 8979], 50.00th=[ 11731], 60.00th=[ 14746], | 70.00th=[ 18482], 80.00th=[ 22938], 90.00th=[ 30278], 95.00th=[ 36963], | 99.00th=[ 57934], 99.50th=[ 77071], 99.90th=[135267], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 63, max= 224, per=25.97%, avg=130.62, stdev=37.69, samples=96 iops : min= 15, max= 56, avg=32.26, stdev= 9.51, samples=96 lat (usec) : 50=0.13%, 100=0.55%, 250=1.20%, 500=0.03%, 1000=0.36% lat (msec) : 2=1.04%, 4=8.63%, 10=21.88%, 20=38.25%, 50=26.69% lat (msec) : 100=1.07%, 250=0.13%, 750=0.03% cpu : usr=0.08%, sys=28.23%, ctx=9395, 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=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=154678: Sat Aug 15 20:30:31 2026 read: IOPS=31, BW=124KiB/s (127kB/s)(6028KiB/48556msec) clat (usec): min=28, max=97453, avg=16786.38, stdev=10054.31 lat (usec): min=28, max=97454, avg=16787.01, stdev=10054.36 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 5014], 10.00th=[ 7439], 20.00th=[ 9372], | 30.00th=[11076], 40.00th=[12780], 50.00th=[15008], 60.00th=[17171], | 70.00th=[19530], 80.00th=[23200], 90.00th=[29230], 95.00th=[34341], | 99.00th=[50594], 99.50th=[55313], 99.90th=[93848], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 55, max= 224, per=26.07%, avg=125.14, stdev=34.69, samples=95 iops : min= 13, max= 56, avg=30.87, stdev= 8.75, samples=95 write: IOPS=32, BW=129KiB/s (132kB/s)(6260KiB/48556msec); 0 zone resets clat (usec): min=648, max=644564, avg=14793.77, stdev=19582.08 lat (usec): min=648, max=644564, avg=14797.27, stdev=19581.31 clat percentiles (usec): | 1.00th=[ 898], 5.00th=[ 2409], 10.00th=[ 3064], 20.00th=[ 4178], | 30.00th=[ 6587], 40.00th=[ 9503], 50.00th=[ 11731], 60.00th=[ 14746], | 70.00th=[ 18220], 80.00th=[ 22676], 90.00th=[ 29230], 95.00th=[ 34866], | 99.00th=[ 55313], 99.50th=[ 60556], 99.90th=[100140], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 13, max= 200, per=25.48%, avg=128.18, stdev=33.78, samples=96 iops : min= 3, max= 50, avg=31.65, stdev= 8.47, samples=96 lat (usec) : 50=0.16%, 100=0.78%, 250=1.11%, 500=0.03%, 750=0.16% lat (usec) : 1000=0.55% lat (msec) : 2=1.14%, 4=7.91%, 10=21.58%, 20=39.78%, 50=25.52% lat (msec) : 100=1.24%, 750=0.03% cpu : usr=0.12%, sys=28.42%, ctx=9252, 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=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=154679: Sat Aug 15 20:30:31 2026 read: IOPS=30, BW=123KiB/s (126kB/s)(6052KiB/49012msec) clat (usec): min=27, max=141092, avg=16607.13, stdev=10601.85 lat (usec): min=28, max=141093, avg=16607.71, stdev=10601.93 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 5604], 10.00th=[ 7570], 20.00th=[ 9372], | 30.00th=[ 11076], 40.00th=[ 12911], 50.00th=[ 14746], 60.00th=[ 16581], | 70.00th=[ 19268], 80.00th=[ 22414], 90.00th=[ 27919], 95.00th=[ 33817], | 99.00th=[ 52691], 99.50th=[ 61080], 99.90th=[137364], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 39, max= 200, per=25.87%, avg=124.16, stdev=31.07, samples=96 iops : min= 9, max= 50, avg=30.64, stdev= 7.84, samples=96 write: IOPS=31, BW=127KiB/s (130kB/s)(6236KiB/49012msec); 0 zone resets clat (usec): min=687, max=647600, avg=15252.71, stdev=20026.64 lat (usec): min=688, max=647600, avg=15253.41, stdev=20026.68 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 2540], 10.00th=[ 3064], 20.00th=[ 4490], | 30.00th=[ 6652], 40.00th=[ 9503], 50.00th=[ 11994], 60.00th=[ 14746], | 70.00th=[ 18482], 80.00th=[ 22938], 90.00th=[ 30802], 95.00th=[ 37487], | 99.00th=[ 55313], 99.50th=[ 61604], 99.90th=[106431], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 6, max= 216, per=25.23%, avg=126.89, stdev=34.15, samples=97 iops : min= 1, max= 54, avg=31.32, stdev= 8.64, samples=97 lat (usec) : 50=0.26%, 100=0.55%, 250=1.11%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=0.98%, 4=7.91%, 10=21.68%, 20=40.59%, 50=25.29% lat (msec) : 100=1.17%, 250=0.13%, 750=0.03% cpu : usr=0.09%, sys=28.54%, ctx=9393, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=481KiB/s (492kB/s), 120KiB/s-124KiB/s (123kB/s-127kB/s), io=23.4MiB (24.6MB), run=48556-49929msec WRITE: bw=504KiB/s (516kB/s), 126KiB/s-130KiB/s (129kB/s-133kB/s), io=24.6MiB (25.7MB), run=48556-49929msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154671: Sat Aug 15 20:30:51 2026 read: IOPS=21, BW=84.0KiB/s (87.0kB/s)(5992KiB/70503msec) clat (msec): min=2, max=650, avg=14.60, stdev=21.32 lat (msec): min=2, max=650, avg=14.60, stdev=21.32 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 42], | 99.00th=[ 63], 99.50th=[ 86], 99.90th=[ 122], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 15, max= 240, per=25.14%, avg=85.22, stdev=47.51, samples=139 iops : min= 3, max= 60, avg=21.00, stdev=12.05, samples=139 write: IOPS=22, BW=89.3KiB/s (91.4kB/s)(6296KiB/70503msec); 0 zone resets clat (msec): min=11, max=121, avg=30.79, stdev=15.49 lat (msec): min=11, max=121, avg=30.79, stdev=15.49 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 53], 95.00th=[ 61], | 99.00th=[ 82], 99.50th=[ 95], 99.90th=[ 115], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 32, max= 184, per=25.27%, avg=89.71, stdev=44.99, samples=139 iops : min= 8, max= 46, avg=22.12, stdev=11.41, samples=139 lat (msec) : 4=5.79%, 10=19.82%, 20=26.73%, 50=40.43%, 100=6.90% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.07%, sys=10.99%, ctx=6267, 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=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=154672: Sat Aug 15 20:30:51 2026 read: IOPS=20, BW=83.9KiB/s (85.0kB/s)(5940KiB/70763msec) clat (msec): min=2, max=675, avg=14.27, stdev=21.82 lat (msec): min=2, max=675, avg=14.27, stdev=21.82 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 7], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 21], 90.00th=[ 31], 95.00th=[ 40], | 99.00th=[ 62], 99.50th=[ 91], 99.90th=[ 130], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 16, max= 264, per=24.80%, avg=84.07, stdev=49.98, samples=139 iops : min= 4, max= 66, avg=20.71, stdev=12.63, samples=139 write: IOPS=22, BW=89.7KiB/s (91.9kB/s)(6348KiB/70763msec); 0 zone resets clat (msec): min=11, max=180, avg=31.13, stdev=16.69 lat (msec): min=11, max=180, avg=31.13, stdev=16.69 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 53], 95.00th=[ 64], | 99.00th=[ 90], 99.50th=[ 105], 99.90th=[ 138], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 31, max= 184, per=25.21%, avg=89.49, stdev=45.05, samples=139 iops : min= 7, max= 46, avg=22.06, stdev=11.45, samples=139 lat (msec) : 4=5.83%, 10=20.02%, 20=26.27%, 50=40.20%, 100=7.13% lat (msec) : 250=0.52%, 750=0.03% cpu : usr=0.06%, sys=10.83%, ctx=6085, 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=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=154673: Sat Aug 15 20:30:51 2026 read: IOPS=21, BW=85.7KiB/s (87.7kB/s)(6028KiB/70344msec) clat (msec): min=2, max=129, avg=14.16, stdev=14.12 lat (msec): min=2, max=129, avg=14.16, stdev=14.12 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 42], | 99.00th=[ 66], 99.50th=[ 87], 99.90th=[ 120], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 15, max= 248, per=25.46%, avg=86.32, stdev=48.31, samples=139 iops : min= 3, max= 62, avg=21.27, stdev=12.23, samples=139 write: IOPS=22, BW=88.0KiB/s (91.1kB/s)(6260KiB/70344msec); 0 zone resets clat (msec): min=11, max=687, avg=31.21, stdev=22.91 lat (msec): min=11, max=687, avg=31.21, stdev=22.91 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 42], 90.00th=[ 52], 95.00th=[ 60], | 99.00th=[ 92], 99.50th=[ 103], 99.90th=[ 148], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 31, max= 184, per=25.22%, avg=89.55, stdev=45.35, samples=139 iops : min= 7, max= 46, avg=22.08, stdev=11.52, samples=139 lat (msec) : 4=6.67%, 10=19.63%, 20=25.72%, 50=41.21%, 100=6.35% lat (msec) : 250=0.39%, 750=0.03% cpu : usr=0.08%, sys=10.83%, ctx=6248, 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=154674: Sat Aug 15 20:30:51 2026 read: IOPS=21, BW=86.5KiB/s (88.6kB/s)(6052KiB/69976msec) clat (msec): min=2, max=120, avg=14.25, stdev=14.29 lat (msec): min=2, max=120, avg=14.25, stdev=14.29 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 7], 50.00th=[ 9], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 33], 95.00th=[ 42], | 99.00th=[ 68], 99.50th=[ 87], 99.90th=[ 120], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 23, max= 264, per=25.67%, avg=87.01, stdev=50.58, samples=138 iops : min= 5, max= 66, avg=21.44, stdev=12.80, samples=138 write: IOPS=22, BW=89.1KiB/s (91.3kB/s)(6236KiB/69976msec); 0 zone resets clat (msec): min=12, max=681, avg=30.95, stdev=22.60 lat (msec): min=12, max=681, avg=30.95, stdev=22.60 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 52], 95.00th=[ 61], | 99.00th=[ 83], 99.50th=[ 93], 99.90th=[ 176], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 32, max= 184, per=25.24%, avg=89.61, stdev=44.84, samples=138 iops : min= 8, max= 46, avg=22.09, stdev=11.39, samples=138 lat (msec) : 4=6.58%, 10=19.73%, 20=26.20%, 50=40.49%, 100=6.71% lat (msec) : 250=0.26%, 750=0.03% cpu : usr=0.08%, sys=11.13%, ctx=6130, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=339KiB/s (347kB/s), 83.9KiB/s-86.5KiB/s (85.0kB/s-88.6kB/s), io=23.4MiB (24.6MB), run=69976-70763msec WRITE: bw=355KiB/s (364kB/s), 88.0KiB/s-89.7KiB/s (91.1kB/s-91.9kB/s), io=24.6MiB (25.7MB), run=69976-70763msec 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=154712: Sat Aug 15 20:31:16 2026 read: IOPS=21, BW=342KiB/s (350kB/s)(5920KiB/17318msec) clat (usec): min=55, max=134239, avg=23188.44, stdev=14020.36 lat (usec): min=56, max=134240, avg=23190.21, stdev=14020.23 clat percentiles (usec): | 1.00th=[ 109], 5.00th=[ 192], 10.00th=[ 7701], 20.00th=[ 13566], | 30.00th=[ 16909], 40.00th=[ 19268], 50.00th=[ 21365], 60.00th=[ 24249], | 70.00th=[ 28181], 80.00th=[ 33817], 90.00th=[ 38536], 95.00th=[ 42206], | 99.00th=[ 67634], 99.50th=[ 94897], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 191, max= 512, per=25.41%, avg=339.94, stdev=85.42, samples=34 iops : min= 11, max= 32, avg=20.62, stdev= 5.46, samples=34 write: IOPS=22, BW=368KiB/s (377kB/s)(6368KiB/17318msec); 0 zone resets clat (usec): min=1042, max=93343, avg=21708.09, stdev=15490.53 lat (usec): min=1043, max=93343, avg=21709.38, stdev=15490.63 clat percentiles (usec): | 1.00th=[ 2073], 5.00th=[ 4359], 10.00th=[ 6390], 20.00th=[ 8848], | 30.00th=[11469], 40.00th=[14877], 50.00th=[17433], 60.00th=[21365], | 70.00th=[26084], 80.00th=[32637], 90.00th=[45351], 95.00th=[51119], | 99.00th=[69731], 99.50th=[89654], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 128, max= 576, per=26.13%, avg=367.88, stdev=99.37, samples=34 iops : min= 8, max= 36, avg=22.38, stdev= 6.19, samples=34 lat (usec) : 100=0.26%, 250=3.65%, 500=0.13% lat (msec) : 2=0.39%, 4=1.95%, 10=12.11%, 20=32.16%, 50=45.44% lat (msec) : 100=3.78%, 250=0.13% cpu : usr=0.06%, sys=31.05%, ctx=3050, 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=154713: Sat Aug 15 20:31:16 2026 read: IOPS=20, BW=321KiB/s (329kB/s)(5744KiB/17894msec) clat (usec): min=35, max=80723, avg=24512.79, stdev=12184.54 lat (usec): min=35, max=80724, avg=24513.54, stdev=12184.58 clat percentiles (usec): | 1.00th=[ 105], 5.00th=[ 347], 10.00th=[11600], 20.00th=[15008], | 30.00th=[17695], 40.00th=[20841], 50.00th=[23462], 60.00th=[26608], | 70.00th=[29754], 80.00th=[33817], 90.00th=[39584], 95.00th=[45876], | 99.00th=[55837], 99.50th=[71828], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 107, max= 478, per=23.92%, avg=320.00, stdev=85.07, samples=35 iops : min= 6, max= 29, avg=19.40, stdev= 5.23, samples=35 write: IOPS=22, BW=366KiB/s (374kB/s)(6544KiB/17894msec); 0 zone resets clat (usec): min=1172, max=115313, avg=22028.78, stdev=15909.91 lat (usec): min=1173, max=115314, avg=22030.92, stdev=15909.72 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 4752], 10.00th=[ 6521], 20.00th=[ 8586], | 30.00th=[ 10945], 40.00th=[ 14222], 50.00th=[ 18220], 60.00th=[ 22938], | 70.00th=[ 27919], 80.00th=[ 34866], 90.00th=[ 42730], 95.00th=[ 50594], | 99.00th=[ 72877], 99.50th=[ 82314], 99.90th=[114820], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 127, max= 736, per=25.90%, avg=364.66, stdev=126.42, samples=35 iops : min= 7, max= 46, avg=22.20, stdev= 7.95, samples=35 lat (usec) : 50=0.13%, 100=0.13%, 250=1.82%, 500=0.26% lat (msec) : 2=1.17%, 4=0.65%, 10=13.80%, 20=28.39%, 50=49.87% lat (msec) : 100=3.65%, 250=0.13% cpu : usr=0.07%, sys=30.84%, ctx=3194, 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=154714: Sat Aug 15 20:31:16 2026 read: IOPS=21, BW=351KiB/s (360kB/s)(6256KiB/17811msec) clat (usec): min=60, max=87401, avg=24115.82, stdev=13452.00 lat (usec): min=61, max=87402, avg=24116.62, stdev=13452.03 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 200], 10.00th=[ 9503], 20.00th=[15008], | 30.00th=[17433], 40.00th=[20317], 50.00th=[22938], 60.00th=[25822], | 70.00th=[29230], 80.00th=[34341], 90.00th=[40633], 95.00th=[44827], | 99.00th=[64750], 99.50th=[70779], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 159, max= 512, per=26.35%, avg=352.54, stdev=81.62, samples=35 iops : min= 9, max= 32, avg=21.46, stdev= 5.28, samples=35 write: IOPS=21, BW=339KiB/s (347kB/s)(6032KiB/17811msec); 0 zone resets clat (usec): min=1603, max=83980, avg=22153.38, stdev=14631.55 lat (usec): min=1604, max=83982, avg=22155.07, stdev=14631.43 clat percentiles (usec): | 1.00th=[ 2900], 5.00th=[ 5407], 10.00th=[ 6718], 20.00th=[ 9503], | 30.00th=[12387], 40.00th=[15270], 50.00th=[18220], 60.00th=[22152], | 70.00th=[27395], 80.00th=[33817], 90.00th=[44303], 95.00th=[50070], | 99.00th=[67634], 99.50th=[69731], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 159, max= 574, per=23.73%, avg=334.11, stdev=103.23, samples=35 iops : min= 9, max= 35, avg=20.29, stdev= 6.51, samples=35 lat (usec) : 100=0.39%, 250=3.26%, 500=0.65% lat (msec) : 2=0.39%, 4=0.78%, 10=11.07%, 20=30.86%, 50=48.31% lat (msec) : 100=4.30% cpu : usr=0.05%, sys=30.62%, ctx=3064, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154715: Sat Aug 15 20:31:16 2026 read: IOPS=21, BW=337KiB/s (345kB/s)(6032KiB/17879msec) clat (usec): min=39, max=71568, avg=24928.10, stdev=13550.51 lat (usec): min=39, max=71568, avg=24928.83, stdev=13550.53 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 192], 10.00th=[ 9765], 20.00th=[15008], | 30.00th=[17433], 40.00th=[20841], 50.00th=[23987], 60.00th=[27132], | 70.00th=[30278], 80.00th=[34866], 90.00th=[40633], 95.00th=[49546], | 99.00th=[65274], 99.50th=[69731], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 191, max= 576, per=24.81%, avg=331.94, stdev=86.58, samples=35 iops : min= 11, max= 36, avg=20.14, stdev= 5.57, samples=35 write: IOPS=21, BW=350KiB/s (358kB/s)(6256KiB/17879msec); 0 zone resets clat (usec): min=1113, max=78161, avg=21461.01, stdev=14114.81 lat (usec): min=1114, max=78163, avg=21464.90, stdev=14113.83 clat percentiles (usec): | 1.00th=[ 2638], 5.00th=[ 4948], 10.00th=[ 6521], 20.00th=[ 8717], | 30.00th=[11207], 40.00th=[14353], 50.00th=[18744], 60.00th=[23200], | 70.00th=[27132], 80.00th=[32637], 90.00th=[40633], 95.00th=[47973], | 99.00th=[63177], 99.50th=[74974], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 192, max= 606, per=24.60%, avg=346.37, stdev=91.25, samples=35 iops : min= 12, max= 37, avg=21.06, stdev= 5.76, samples=35 lat (usec) : 50=0.13%, 100=0.39%, 250=2.60%, 500=0.52% lat (msec) : 2=0.52%, 4=0.39%, 10=13.54%, 20=27.60%, 50=49.74% lat (msec) : 100=4.56% cpu : usr=0.08%, sys=30.78%, ctx=3232, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1339KiB/s (1371kB/s), 321KiB/s-351KiB/s (329kB/s-360kB/s), io=23.4MiB (24.5MB), run=17318-17894msec WRITE: bw=1408KiB/s (1442kB/s), 339KiB/s-368KiB/s (347kB/s-377kB/s), io=24.6MiB (25.8MB), run=17318-17894msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154708: Sat Aug 15 20:31:22 2026 read: IOPS=15, BW=250KiB/s (256kB/s)(5920KiB/23717msec) clat (msec): min=3, max=119, avg=21.29, stdev=18.97 lat (msec): min=3, max=119, avg=21.29, stdev=18.97 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 31], 90.00th=[ 46], 95.00th=[ 66], | 99.00th=[ 90], 99.50th=[ 110], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 32, max= 736, per=24.91%, avg=249.13, stdev=137.74, samples=47 iops : min= 2, max= 46, avg=15.17, stdev= 8.76, samples=47 write: IOPS=16, BW=268KiB/s (275kB/s)(6368KiB/23717msec); 0 zone resets clat (msec): min=15, max=166, avg=39.69, stdev=20.95 lat (msec): min=15, max=166, avg=39.69, stdev=20.95 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 66], 95.00th=[ 77], | 99.00th=[ 124], 99.50th=[ 161], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 96, max= 576, per=25.53%, avg=268.60, stdev=124.57, samples=47 iops : min= 6, max= 36, avg=16.38, stdev= 7.99, samples=47 lat (msec) : 4=0.91%, 10=12.76%, 20=20.70%, 50=49.35%, 100=15.10% lat (msec) : 250=1.17% cpu : usr=0.07%, sys=12.24%, ctx=1866, 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=154709: Sat Aug 15 20:31:22 2026 read: IOPS=14, BW=240KiB/s (246kB/s)(5744KiB/23947msec) clat (usec): min=2806, max=89219, avg=21499.61, stdev=17463.36 lat (usec): min=2806, max=89220, avg=21500.39, stdev=17463.42 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 4146], 10.00th=[ 5276], 20.00th=[ 7439], | 30.00th=[10552], 40.00th=[12911], 50.00th=[15926], 60.00th=[19268], | 70.00th=[24773], 80.00th=[31065], 90.00th=[47973], 95.00th=[62129], | 99.00th=[78119], 99.50th=[85459], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 63, max= 608, per=23.71%, avg=237.11, stdev=137.40, samples=47 iops : min= 3, max= 38, avg=14.40, stdev= 8.77, samples=47 write: IOPS=17, BW=273KiB/s (280kB/s)(6544KiB/23947msec); 0 zone resets clat (msec): min=11, max=123, avg=39.49, stdev=20.00 lat (msec): min=11, max=123, avg=39.49, stdev=20.00 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 68], 95.00th=[ 82], | 99.00th=[ 107], 99.50th=[ 117], 99.90th=[ 124], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 64, max= 576, per=25.37%, avg=266.87, stdev=121.22, samples=47 iops : min= 4, max= 36, avg=16.28, stdev= 7.73, samples=47 lat (msec) : 4=1.43%, 10=11.72%, 20=19.40%, 50=49.74%, 100=16.93% lat (msec) : 250=0.78% cpu : usr=0.06%, sys=12.21%, ctx=1941, 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=154710: Sat Aug 15 20:31:22 2026 read: IOPS=16, BW=265KiB/s (272kB/s)(6256KiB/23577msec) clat (msec): min=3, max=102, avg=21.05, stdev=17.24 lat (msec): min=3, max=102, avg=21.05, stdev=17.24 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 32], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 85], 99.50th=[ 92], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 95, max= 704, per=26.60%, avg=266.00, stdev=159.24, samples=46 iops : min= 5, max= 44, avg=16.22, stdev=10.10, samples=46 write: IOPS=15, BW=256KiB/s (262kB/s)(6032KiB/23577msec); 0 zone resets clat (msec): min=16, max=165, avg=40.60, stdev=20.63 lat (msec): min=16, max=165, avg=40.61, stdev=20.63 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 56], 90.00th=[ 68], 95.00th=[ 80], | 99.00th=[ 117], 99.50th=[ 133], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 95, max= 544, per=23.95%, avg=251.96, stdev=113.46, samples=46 iops : min= 5, max= 34, avg=15.33, stdev= 7.28, samples=46 lat (msec) : 4=0.52%, 10=13.93%, 20=20.05%, 50=49.61%, 100=14.97% lat (msec) : 250=0.91% cpu : usr=0.08%, sys=12.55%, ctx=1928, 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=154711: Sat Aug 15 20:31:22 2026 read: IOPS=15, BW=253KiB/s (259kB/s)(6032KiB/23829msec) clat (msec): min=2, max=151, avg=21.98, stdev=20.40 lat (msec): min=2, max=151, avg=21.98, stdev=20.40 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 48], 95.00th=[ 64], | 99.00th=[ 94], 99.50th=[ 120], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 63, max= 638, per=24.94%, avg=249.43, stdev=128.31, samples=47 iops : min= 3, max= 39, avg=15.19, stdev= 8.15, samples=47 write: IOPS=16, BW=263KiB/s (269kB/s)(6256KiB/23829msec); 0 zone resets clat (msec): min=13, max=167, avg=39.61, stdev=22.29 lat (msec): min=13, max=167, avg=39.61, stdev=22.29 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 67], 95.00th=[ 86], | 99.00th=[ 124], 99.50th=[ 163], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 96, max= 608, per=24.73%, avg=260.13, stdev=126.93, samples=47 iops : min= 6, max= 38, avg=15.85, stdev= 8.13, samples=47 lat (msec) : 4=2.08%, 10=11.72%, 20=20.44%, 50=50.13%, 100=13.54% lat (msec) : 250=2.08% cpu : usr=0.05%, sys=12.69%, ctx=1984, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1000KiB/s (1024kB/s), 240KiB/s-265KiB/s (246kB/s-272kB/s), io=23.4MiB (24.5MB), run=23577-23947msec WRITE: bw=1052KiB/s (1078kB/s), 256KiB/s-273KiB/s (262kB/s-280kB/s), io=24.6MiB (25.8MB), run=23577-23947msec 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=154723: Sat Aug 15 20:31:30 2026 read: IOPS=2, BW=2569KiB/s (2631kB/s)(7168KiB/2790msec) clat (usec): min=500, max=841049, avg=204968.77, stdev=288763.62 lat (usec): min=501, max=841051, avg=204969.81, stdev=288763.84 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 54789], | 30.00th=[ 83362], 40.00th=[ 83362], 50.00th=[ 85459], 60.00th=[156238], | 70.00th=[156238], 80.00th=[212861], 90.00th=[843056], 95.00th=[843056], | 99.00th=[843056], 99.50th=[843056], 99.90th=[843056], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 1992, max= 6144, per=59.59%, avg=4077.33, stdev=2076.06, samples=3 iops : min= 1, max= 6, avg= 3.67, stdev= 2.52, samples=3 write: IOPS=1, BW=1835KiB/s (1879kB/s)(5120KiB/2790msec); 0 zone resets clat (msec): min=126, max=496, avg=269.57, stdev=153.92 lat (msec): min=126, max=496, avg=269.64, stdev=153.97 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 2023, max= 3984, per=28.03%, avg=2685.00, stdev=1125.04, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=25.00%, 250=41.67%, 500=16.67%, 1000=8.33% cpu : usr=0.04%, sys=37.86%, ctx=1362, 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=154724: Sat Aug 15 20:31:30 2026 read: IOPS=0, BW=684KiB/s (701kB/s)(2048KiB/2993msec) clat (usec): min=454, max=146883, avg=73668.95, stdev=103541.17 lat (usec): min=455, max=146884, avg=73669.96, stdev=103541.56 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 453], | 30.00th=[ 453], 40.00th=[ 453], 50.00th=[ 453], 60.00th=[147850], | 70.00th=[147850], 80.00th=[147850], 90.00th=[147850], 95.00th=[147850], | 99.00th=[147850], 99.50th=[147850], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 1703, max= 2023, per=27.23%, avg=1863.00, stdev=226.27, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3421KiB/s (3503kB/s)(10.0MiB/2993msec); 0 zone resets clat (msec): min=89, max=938, avg=281.20, stdev=250.37 lat (msec): min=89, max=938, avg=281.27, stdev=250.36 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 106], | 30.00th=[ 134], 40.00th=[ 159], 50.00th=[ 199], 60.00th=[ 215], | 70.00th=[ 245], 80.00th=[ 334], 90.00th=[ 397], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 4047, max= 8192, per=63.39%, avg=6071.67, stdev=2074.16, samples=3 iops : min= 3, max= 8, avg= 5.33, stdev= 2.52, samples=3 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 1000=8.33% cpu : usr=0.07%, sys=36.03%, ctx=329, 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=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=154725: Sat Aug 15 20:31:30 2026 read: IOPS=2, BW=2266KiB/s (2321kB/s)(6144KiB/2711msec) clat (usec): min=359, max=173541, avg=99862.15, stdev=79628.11 lat (usec): min=360, max=173542, avg=99863.06, stdev=79627.99 clat percentiles (usec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 449], | 30.00th=[ 449], 40.00th=[121111], 50.00th=[121111], 60.00th=[133694], | 70.00th=[168821], 80.00th=[168821], 90.00th=[173016], 95.00th=[173016], | 99.00th=[173016], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 1992, max= 4096, per=49.38%, avg=3378.33, stdev=1200.85, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2266KiB/s (2321kB/s)(6144KiB/2711msec); 0 zone resets clat (msec): min=110, max=1019, avg=348.64, stdev=342.65 lat (msec): min=110, max=1019, avg=348.69, stdev=342.65 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 234], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 2023, max= 3984, per=29.95%, avg=2868.50, stdev=989.19, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 500=16.67% lat (msec) : 250=66.67%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=32.92%, ctx=775, 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=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=154726: Sat Aug 15 20:31:30 2026 read: IOPS=1, BW=2039KiB/s (2088kB/s)(5120KiB/2511msec) clat (usec): min=448, max=144319, avg=63487.59, stdev=65125.97 lat (usec): min=449, max=144321, avg=63488.91, stdev=65126.12 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], 20.00th=[ 449], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 58983], 60.00th=[ 58983], | 70.00th=[112722], 80.00th=[112722], 90.00th=[143655], 95.00th=[143655], | 99.00th=[143655], 99.50th=[143655], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 2048, max= 6071, per=59.33%, avg=4059.50, stdev=2844.69, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2855KiB/s (2923kB/s)(7168KiB/2511msec); 0 zone resets clat (msec): min=127, max=929, avg=307.85, stdev=287.01 lat (msec): min=127, max=929, avg=307.91, stdev=287.01 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 326], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1700, max= 6144, per=34.34%, avg=3289.00, stdev=2477.77, samples=3 iops : min= 1, max= 6, avg= 2.67, stdev= 2.89, samples=3 lat (usec) : 500=16.67% lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 1000=8.33% cpu : usr=0.04%, sys=37.77%, ctx=385, 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=6843KiB/s (7007kB/s), 684KiB/s-2569KiB/s (701kB/s-2631kB/s), io=20.0MiB (20.0MB), run=2511-2993msec WRITE: bw=9580KiB/s (9810kB/s), 1835KiB/s-3421KiB/s (1879kB/s-3503kB/s), io=28.0MiB (29.4MB), run=2511-2993msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154728: Sat Aug 15 20:31:30 2026 read: IOPS=2, BW=2276KiB/s (2330kB/s)(7168KiB/3150msec) clat (msec): min=28, max=919, avg=333.45, stdev=325.21 lat (msec): min=28, max=919, avg=333.46, stdev=325.21 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 29], 10.00th=[ 29], 20.00th=[ 99], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 188], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 634], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 2043, max= 4096, per=48.25%, avg=3070.75, stdev=1183.86, samples=4 iops : min= 1, max= 4, avg= 2.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1625KiB/s (1664kB/s)(5120KiB/3150msec); 0 zone resets clat (msec): min=82, max=226, avg=136.77, stdev=64.10 lat (msec): min=82, max=226, avg=136.84, stdev=64.10 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 83], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 108], 60.00th=[ 108], | 70.00th=[ 182], 80.00th=[ 182], 90.00th=[ 228], 95.00th=[ 228], | 99.00th=[ 228], 99.50th=[ 228], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 2048, max= 6131, per=45.90%, avg=4089.50, stdev=2887.12, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 50=8.33%, 100=25.00%, 250=41.67%, 500=8.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.03%, sys=9.94%, ctx=88, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=154729: Sat Aug 15 20:31:30 2026 read: IOPS=0, BW=658KiB/s (674kB/s)(2048KiB/3112msec) clat (msec): min=150, max=244, avg=197.38, stdev=66.90 lat (msec): min=150, max=244, avg=197.38, stdev=66.90 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 1809, max= 2043, per=30.26%, avg=1926.00, stdev=165.46, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3290KiB/s (3369kB/s)(10.0MiB/3112msec); 0 zone resets clat (msec): min=60, max=1259, avg=258.91, stdev=364.60 lat (msec): min=61, max=1259, avg=259.07, stdev=364.54 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 68], | 30.00th=[ 99], 40.00th=[ 114], 50.00th=[ 128], 60.00th=[ 144], | 70.00th=[ 150], 80.00th=[ 167], 90.00th=[ 401], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 2048, max= 8175, per=51.68%, avg=4603.75, stdev=3065.39, samples=4 iops : min= 2, max= 7, avg= 4.25, stdev= 2.63, samples=4 lat (msec) : 100=25.00%, 250=58.33%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=13.40%, ctx=133, 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=154730: Sat Aug 15 20:31:30 2026 read: IOPS=1, BW=1974KiB/s (2022kB/s)(6144KiB/3112msec) clat (msec): min=44, max=330, avg=171.64, stdev=135.05 lat (msec): min=44, max=330, avg=171.65, stdev=135.05 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 52], | 30.00th=[ 52], 40.00th=[ 57], 50.00th=[ 57], 60.00th=[ 251], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 2048, max= 4096, per=53.59%, avg=3410.33, stdev=1179.82, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1974KiB/s (2022kB/s)(6144KiB/3112msec); 0 zone resets clat (msec): min=35, max=1292, avg=325.56, stdev=479.43 lat (msec): min=35, max=1292, avg=325.65, stdev=479.42 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 83], | 30.00th=[ 83], 40.00th=[ 132], 50.00th=[ 132], 60.00th=[ 159], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 2048, max= 4087, per=33.13%, avg=2951.75, stdev=1060.54, samples=4 iops : min= 2, max= 3, avg= 2.50, stdev= 0.58, samples=4 lat (msec) : 50=16.67%, 100=25.00%, 250=25.00%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=9.74%, ctx=159, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154731: Sat Aug 15 20:31:30 2026 read: IOPS=1, BW=1591KiB/s (1629kB/s)(5120KiB/3218msec) clat (msec): min=18, max=341, avg=165.01, stdev=150.37 lat (msec): min=18, max=341, avg=165.01, stdev=150.37 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 19], 10.00th=[ 19], 20.00th=[ 19], | 30.00th=[ 60], 40.00th=[ 60], 50.00th=[ 93], 60.00th=[ 93], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 2048, max= 6131, per=64.26%, avg=4089.50, stdev=2887.12, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2227KiB/s (2281kB/s)(7168KiB/3218msec); 0 zone resets clat (msec): min=39, max=1230, avg=322.85, stdev=426.64 lat (msec): min=39, max=1230, avg=322.92, stdev=426.65 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 51], | 30.00th=[ 59], 40.00th=[ 59], 50.00th=[ 153], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 439], 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= 1783, max= 2048, per=22.24%, avg=1981.75, stdev=132.50, samples=4 iops : min= 1, max= 2, avg= 1.75, stdev= 0.50, samples=4 lat (msec) : 20=8.33%, 50=8.33%, 100=33.33%, 250=8.33%, 500=33.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.97%, ctx=187, 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=6364KiB/s (6517kB/s), 658KiB/s-2276KiB/s (674kB/s-2330kB/s), io=20.0MiB (20.0MB), run=3112-3218msec WRITE: bw=8910KiB/s (9124kB/s), 1625KiB/s-3290KiB/s (1664kB/s-3369kB/s), io=28.0MiB (29.4MB), run=3112-3218msec 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=154738: Sat Aug 15 20:31:38 2026 read: IOPS=2, BW=8434KiB/s (8636kB/s)(12.0MiB/1457msec) clat (msec): min=319, max=646, avg=467.82, stdev=165.72 lat (msec): min=319, max=646, avg=467.82, stdev=165.72 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 651], 80.00th=[ 651], 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= 5809, max= 8192, per=73.96%, avg=7000.50, stdev=1685.04, 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=54.67%, ctx=2826, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154741: Sat Aug 15 20:31:38 2026 read: IOPS=0, BW=2366KiB/s (2423kB/s)(4096KiB/1731msec) clat (nsec): min=368057k, max=368057k, avg=368056608.00, stdev= 0.00 lat (nsec): min=368058k, max=368058k, avg=368058209.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 5595, max= 5595, per=59.11%, avg=5595.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4733KiB/s (4846kB/s)(8192KiB/1731msec); 0 zone resets clat (msec): min=536, max=796, avg=666.19, stdev=183.78 lat (msec): min=536, max=796, avg=666.42, stdev=183.77 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 793], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8192, max= 8192, per=54.90%, 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=33.33%, 1000=33.33% cpu : usr=0.00%, sys=22.77%, ctx=1052, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154743: Sat Aug 15 20:31:38 2026 write: IOPS=1, BW=5596KiB/s (5730kB/s)(12.0MiB/2196msec); 0 zone resets clat (msec): min=161, max=1749, avg=719.37, stdev=893.31 lat (msec): min=162, max=1749, avg=719.69, stdev=893.15 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 247], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=16.08%, ctx=73, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154745: Sat Aug 15 20:31:38 2026 write: IOPS=1, BW=6120KiB/s (6266kB/s)(12.0MiB/2008msec); 0 zone resets clat (msec): min=496, max=906, avg=659.93, stdev=217.05 lat (msec): min=496, max=906, avg=660.28, stdev=217.04 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 5893, max= 8031, per=46.66%, avg=6962.00, stdev=1511.79, 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=17.64%, ctx=65, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=9465KiB/s (9692kB/s), 2366KiB/s-8434KiB/s (2423kB/s-8636kB/s), io=16.0MiB (16.8MB), run=1457-1731msec WRITE: bw=14.6MiB/s (15.3MB/s), 4733KiB/s-6120KiB/s (4846kB/s-6266kB/s), io=32.0MiB (33.6MB), run=1731-2196msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154739: Sat Aug 15 20:31:38 2026 read: IOPS=1, BW=7336KiB/s (7512kB/s)(12.0MiB/1675msec) clat (msec): min=458, max=619, avg=554.77, stdev=85.32 lat (msec): min=458, max=619, avg=554.77, stdev=85.32 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 5580, max= 8192, per=78.98%, avg=6886.00, stdev=1846.96, 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=18.64%, ctx=63, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154740: Sat Aug 15 20:31:38 2026 read: IOPS=0, BW=2180KiB/s (2232kB/s)(4096KiB/1879msec) clat (nsec): min=682170k, max=682170k, avg=682169737.00, stdev= 0.00 lat (nsec): min=682172k, max=682172k, avg=682171993.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 5673, max= 5673, per=65.06%, avg=5673.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4360KiB/s (4464kB/s)(8192KiB/1879msec); 0 zone resets clat (msec): min=521, max=658, avg=589.62, stdev=96.96 lat (msec): min=521, max=658, avg=589.87, stdev=96.88 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 8192, max= 8192, per=57.23%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=100.00% cpu : usr=0.05%, sys=18.05%, ctx=63, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154742: Sat Aug 15 20:31:38 2026 write: IOPS=1, BW=5368KiB/s (5497kB/s)(12.0MiB/2289msec); 0 zone resets clat (msec): min=66, max=2014, avg=742.68, stdev=1102.09 lat (msec): min=66, max=2014, avg=742.90, stdev=1102.02 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 67], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 250=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=8.83%, ctx=48, 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=154744: Sat Aug 15 20:31:38 2026 write: IOPS=1, BW=5780KiB/s (5919kB/s)(12.0MiB/2126msec); 0 zone resets clat (msec): min=252, max=1565, avg=698.13, stdev=751.17 lat (msec): min=253, max=1565, avg=698.44, stdev=751.24 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min=11252, max=11252, per=78.60%, avg=11252.00, 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=14.45%, ctx=73, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=8720KiB/s (8929kB/s), 2180KiB/s-7336KiB/s (2232kB/s-7512kB/s), io=16.0MiB (16.8MB), run=1675-1879msec WRITE: bw=13.0MiB/s (14.7MB/s), 4360KiB/s-5780KiB/s (4464kB/s-5919kB/s), io=32.0MiB (33.6MB), run=1879-2289msec