== sanity test 398b: DIO and buffer IO race ============== 12:22:41 (1787847761) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.02487 s, 6.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179144: Thu Aug 27 12:25:10 2026 read: IOPS=12, BW=48.8KiB/s (49.0kB/s)(5992KiB/122799msec) clat (usec): min=37, max=739121, avg=45524.03, stdev=34166.31 lat (usec): min=38, max=739123, avg=45527.22, stdev=34170.30 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 11731], 10.00th=[ 17171], 20.00th=[ 23200], | 30.00th=[ 27919], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 80217], 95.00th=[ 92799], | 99.00th=[164627], 99.50th=[191890], 99.90th=[246416], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 5, max= 109, per=25.32%, avg=48.36, stdev=17.97, samples=242 iops : min= 1, max= 27, avg=11.46, stdev= 4.53, samples=242 write: IOPS=12, BW=51.3KiB/s (52.5kB/s)(6296KiB/122799msec); 0 zone resets clat (usec): min=770, max=272389, avg=34343.62, stdev=35361.10 lat (usec): min=772, max=272390, avg=34345.71, stdev=35361.49 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1319], 10.00th=[ 1631], 20.00th=[ 3884], | 30.00th=[ 7963], 40.00th=[ 15139], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 61604], 90.00th=[ 81265], 95.00th=[101188], | 99.00th=[141558], 99.50th=[164627], 99.90th=[261096], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 111, per=25.59%, avg=51.17, stdev=20.35, samples=240 iops : min= 1, max= 27, avg=12.18, stdev= 5.13, samples=240 lat (usec) : 50=0.20%, 100=1.37%, 250=0.16%, 1000=0.23% lat (msec) : 2=6.15%, 4=4.36%, 10=7.16%, 20=10.12%, 50=39.45% lat (msec) : 100=26.01%, 250=4.65%, 500=0.10%, 750=0.03% cpu : usr=0.11%, sys=5.46%, ctx=6512, 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=179146: Thu Aug 27 12:25:10 2026 read: IOPS=12, BW=48.2KiB/s (49.4kB/s)(5940KiB/123208msec) clat (usec): min=36, max=212235, avg=45017.73, stdev=28856.80 lat (usec): min=36, max=212237, avg=45034.24, stdev=28851.41 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 12125], 10.00th=[ 17171], 20.00th=[ 22938], | 30.00th=[ 28705], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 63177], 90.00th=[ 78119], 95.00th=[ 95945], | 99.00th=[154141], 99.50th=[179307], 99.90th=[204473], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 5, max= 95, per=25.19%, avg=48.11, stdev=18.06, samples=241 iops : min= 1, max= 23, avg=11.40, stdev= 4.56, samples=241 write: IOPS=12, BW=51.5KiB/s (52.8kB/s)(6348KiB/123208msec); 0 zone resets clat (usec): min=762, max=737990, avg=35150.79, stdev=39239.50 lat (usec): min=764, max=737992, avg=35153.37, stdev=39240.17 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1319], 10.00th=[ 1647], 20.00th=[ 3916], | 30.00th=[ 7963], 40.00th=[ 16057], 50.00th=[ 25035], 60.00th=[ 34341], | 70.00th=[ 44827], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[103285], | 99.00th=[152044], 99.50th=[177210], 99.90th=[219153], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 7, max= 117, per=25.65%, avg=51.30, stdev=21.17, samples=242 iops : min= 1, max= 29, avg=12.20, stdev= 5.35, samples=242 lat (usec) : 50=0.10%, 100=1.40%, 250=0.26%, 1000=0.13% lat (msec) : 2=6.22%, 4=4.17%, 10=6.87%, 20=10.45%, 50=39.97% lat (msec) : 100=25.68%, 250=4.72%, 750=0.03% cpu : usr=0.11%, sys=5.41%, ctx=6541, 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=179148: Thu Aug 27 12:25:10 2026 read: IOPS=11, BW=47.0KiB/s (49.1kB/s)(6028KiB/125651msec) clat (usec): min=43, max=203060, avg=45924.86, stdev=29029.89 lat (usec): min=43, max=203062, avg=45928.74, stdev=29028.72 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 11731], 10.00th=[ 17171], 20.00th=[ 23200], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 54264], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[147850], 99.50th=[160433], 99.90th=[196084], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 7, max= 104, per=25.05%, avg=47.85, stdev=17.36, samples=245 iops : min= 1, max= 26, avg=11.33, stdev= 4.39, samples=245 write: IOPS=12, BW=49.8KiB/s (51.0kB/s)(6260KiB/125651msec); 0 zone resets clat (usec): min=835, max=703541, avg=35713.79, stdev=38723.39 lat (usec): min=837, max=703545, avg=35717.25, stdev=38723.83 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1467], 20.00th=[ 3752], | 30.00th=[ 8455], 40.00th=[ 17957], 50.00th=[ 26870], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 84411], 95.00th=[103285], | 99.00th=[143655], 99.50th=[164627], 99.90th=[350225], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 112, per=24.88%, avg=49.75, stdev=21.28, samples=244 iops : min= 1, max= 28, avg=11.82, stdev= 5.36, samples=244 lat (usec) : 50=0.16%, 100=1.69%, 250=0.16%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=6.67%, 4=3.65%, 10=5.86%, 20=9.64%, 50=40.49% lat (msec) : 100=25.98%, 250=5.34%, 500=0.03%, 750=0.03% cpu : usr=0.10%, sys=5.29%, ctx=6527, 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=179150: Thu Aug 27 12:25:10 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6052KiB/124640msec) clat (usec): min=39, max=306035, avg=45492.20, stdev=29483.83 lat (usec): min=39, max=306035, avg=45495.40, stdev=29482.92 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 510], 10.00th=[ 16909], 20.00th=[ 23987], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[166724], 99.90th=[267387], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 8, max= 102, per=25.49%, avg=48.68, stdev=16.72, samples=242 iops : min= 2, max= 25, avg=11.55, stdev= 4.21, samples=242 write: IOPS=12, BW=50.0KiB/s (51.2kB/s)(6236KiB/124640msec); 0 zone resets clat (usec): min=767, max=684830, avg=35463.85, stdev=39045.18 lat (usec): min=768, max=684834, avg=35470.36, stdev=39045.99 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1303], 10.00th=[ 1647], 20.00th=[ 4080], | 30.00th=[ 8291], 40.00th=[ 16581], 50.00th=[ 25297], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 61080], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[149947], 99.50th=[185598], 99.90th=[295699], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 142, per=24.93%, avg=49.85, stdev=22.76, samples=243 iops : min= 1, max= 35, avg=11.84, stdev= 5.74, samples=243 lat (usec) : 50=0.10%, 100=2.08%, 250=0.16%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.42% lat (msec) : 2=5.83%, 4=3.97%, 10=6.84%, 20=9.18%, 50=39.55% lat (msec) : 100=26.73%, 250=4.85%, 500=0.13%, 750=0.03% cpu : usr=0.10%, sys=5.43%, ctx=6531, 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=191KiB/s (196kB/s), 47.0KiB/s-48.8KiB/s (49.1kB/s-49.0kB/s), io=23.4MiB (24.6MB), run=122799-125651msec WRITE: bw=200KiB/s (205kB/s), 49.8KiB/s-51.5KiB/s (51.0kB/s-52.8kB/s), io=24.6MiB (25.7MB), run=122799-125651msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179143: Thu Aug 27 12:25:52 2026 read: IOPS=8, BW=35.8KiB/s (36.6kB/s)(5992KiB/167479msec) clat (msec): min=6, max=776, avg=42.75, stdev=41.38 lat (msec): min=6, max=776, avg=42.75, stdev=41.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 91], 95.00th=[ 122], | 99.00th=[ 184], 99.50th=[ 201], 99.90th=[ 275], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 119, per=25.34%, avg=36.24, stdev=23.20, samples=319 iops : min= 1, max= 29, avg= 8.39, stdev= 5.83, samples=319 write: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6296KiB/167479msec); 0 zone resets clat (msec): min=10, max=410, avg=65.39, stdev=45.11 lat (msec): min=10, max=410, avg=65.40, stdev=45.10 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 77], 80.00th=[ 95], 90.00th=[ 123], 95.00th=[ 155], | 99.00th=[ 220], 99.50th=[ 279], 99.90th=[ 355], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7, max= 128, per=24.79%, avg=37.19, stdev=22.15, samples=327 iops : min= 1, max= 32, avg= 8.63, stdev= 5.56, samples=327 lat (msec) : 10=1.63%, 20=13.83%, 50=46.09%, 100=25.59%, 250=12.43% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.07%, sys=1.93%, ctx=4857, 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=179145: Thu Aug 27 12:25:52 2026 read: IOPS=8, BW=35.6KiB/s (36.4kB/s)(5940KiB/166973msec) clat (msec): min=5, max=683, avg=43.45, stdev=42.10 lat (msec): min=5, max=683, avg=43.46, stdev=42.10 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 97], 95.00th=[ 130], | 99.00th=[ 186], 99.50th=[ 207], 99.90th=[ 355], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 119, per=25.77%, avg=36.85, stdev=23.43, samples=312 iops : min= 1, max= 29, avg= 8.54, stdev= 5.90, samples=312 write: IOPS=9, BW=38.0KiB/s (38.9kB/s)(6348KiB/166973msec); 0 zone resets clat (msec): min=10, max=412, avg=64.27, stdev=43.80 lat (msec): min=10, max=412, avg=64.27, stdev=43.80 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 73], 80.00th=[ 93], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 218], 99.50th=[ 262], 99.90th=[ 351], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 103, per=25.25%, avg=37.88, stdev=21.59, samples=324 iops : min= 1, max= 25, avg= 8.81, stdev= 5.42, samples=324 lat (msec) : 10=1.27%, 20=13.64%, 50=46.88%, 100=24.74%, 250=13.05% lat (msec) : 500=0.39%, 750=0.03% cpu : usr=0.07%, sys=1.80%, ctx=4847, 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=179147: Thu Aug 27 12:25:52 2026 read: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6028KiB/166558msec) clat (msec): min=5, max=309, avg=43.03, stdev=38.08 lat (msec): min=5, max=309, avg=43.04, stdev=38.08 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 95], 95.00th=[ 126], | 99.00th=[ 186], 99.50th=[ 211], 99.90th=[ 262], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 144, per=25.55%, avg=36.54, stdev=23.56, samples=321 iops : min= 1, max= 36, avg= 8.47, stdev= 5.92, samples=321 write: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6260KiB/166558msec); 0 zone resets clat (msec): min=12, max=679, avg=64.67, stdev=46.15 lat (msec): min=12, max=679, avg=64.67, stdev=46.15 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 75], 80.00th=[ 94], 90.00th=[ 123], 95.00th=[ 150], | 99.00th=[ 218], 99.50th=[ 262], 99.90th=[ 405], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 103, per=24.83%, avg=37.25, stdev=22.30, samples=327 iops : min= 1, max= 25, avg= 8.65, stdev= 5.59, samples=327 lat (msec) : 10=1.46%, 20=13.64%, 50=47.23%, 100=24.67%, 250=12.66% lat (msec) : 500=0.29%, 750=0.03% cpu : usr=0.07%, sys=1.93%, ctx=4750, 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=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=179149: Thu Aug 27 12:25:52 2026 read: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6052KiB/167126msec) clat (msec): min=6, max=355, avg=43.79, stdev=40.08 lat (msec): min=6, max=355, avg=43.79, stdev=40.08 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 95], 95.00th=[ 128], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 309], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 119, per=26.14%, avg=37.37, stdev=22.70, samples=315 iops : min= 1, max= 29, avg= 8.68, stdev= 5.68, samples=315 write: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6236KiB/167126msec); 0 zone resets clat (msec): min=11, max=690, avg=64.40, stdev=46.06 lat (msec): min=11, max=690, avg=64.41, stdev=46.06 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 73], 80.00th=[ 92], 90.00th=[ 122], 95.00th=[ 148], | 99.00th=[ 228], 99.50th=[ 275], 99.90th=[ 317], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 128, per=24.93%, avg=37.39, stdev=22.16, samples=324 iops : min= 1, max= 32, avg= 8.68, stdev= 5.57, samples=324 lat (msec) : 10=1.60%, 20=13.38%, 50=46.78%, 100=25.36%, 250=12.30% lat (msec) : 500=0.55%, 750=0.03% cpu : usr=0.08%, sys=1.88%, ctx=4885, 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=143KiB/s (147kB/s), 35.6KiB/s-36.2KiB/s (36.4kB/s-37.1kB/s), io=23.4MiB (24.6MB), run=166558-167479msec WRITE: bw=150KiB/s (154kB/s), 37.3KiB/s-38.0KiB/s (38.2kB/s-38.9kB/s), io=24.6MiB (25.7MB), run=166558-167479msec 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=179204: Thu Aug 27 12:26:44 2026 read: IOPS=9, BW=154KiB/s (158kB/s)(5920KiB/38441msec) clat (usec): min=43, max=257680, avg=55416.14, stdev=39648.10 lat (usec): min=44, max=257682, avg=55418.08, stdev=39648.21 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 127], 20.00th=[ 26346], | 30.00th=[ 34866], 40.00th=[ 41157], 50.00th=[ 50070], 60.00th=[ 58983], | 70.00th=[ 67634], 80.00th=[ 82314], 90.00th=[105382], 95.00th=[123208], | 99.00th=[212861], 99.50th=[244319], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 382, per=24.40%, avg=152.04, stdev=64.12, samples=75 iops : min= 1, max= 23, avg= 8.71, stdev= 4.08, samples=75 write: IOPS=10, BW=166KiB/s (170kB/s)(6368KiB/38441msec); 0 zone resets clat (usec): min=1210, max=202618, avg=44938.05, stdev=42920.12 lat (usec): min=1211, max=202620, avg=44944.19, stdev=42920.04 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2057], 10.00th=[ 3818], 20.00th=[ 8455], | 30.00th=[ 13829], 40.00th=[ 22414], 50.00th=[ 31589], 60.00th=[ 41681], | 70.00th=[ 55837], 80.00th=[ 76022], 90.00th=[109577], 95.00th=[135267], | 99.00th=[181404], 99.50th=[198181], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 444, per=25.22%, avg=165.17, stdev=80.05, samples=75 iops : min= 1, max= 27, avg= 9.53, stdev= 5.05, samples=75 lat (usec) : 50=0.26%, 100=4.17%, 250=0.52%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.08%, 4=3.78%, 10=8.20%, 20=6.77%, 50=32.03% lat (msec) : 100=29.95%, 250=11.72%, 500=0.13% cpu : usr=0.08%, sys=5.04%, ctx=1683, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179205: Thu Aug 27 12:26:44 2026 read: IOPS=9, BW=156KiB/s (159kB/s)(5744KiB/36879msec) clat (usec): min=52, max=184721, avg=52338.43, stdev=32468.97 lat (usec): min=54, max=184723, avg=52372.39, stdev=32463.74 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 76], 10.00th=[ 239], 20.00th=[ 29492], | 30.00th=[ 35914], 40.00th=[ 42206], 50.00th=[ 46924], 60.00th=[ 56361], | 70.00th=[ 65799], 80.00th=[ 76022], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[164627], 99.50th=[179307], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 30, max= 349, per=24.89%, avg=155.06, stdev=68.36, samples=72 iops : min= 1, max= 21, avg= 8.89, stdev= 4.30, samples=72 write: IOPS=11, BW=177KiB/s (182kB/s)(6544KiB/36879msec); 0 zone resets clat (usec): min=1316, max=243611, avg=44009.16, stdev=43553.48 lat (usec): min=1317, max=243614, avg=44013.00, stdev=43555.32 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2089], 10.00th=[ 3982], 20.00th=[ 6980], | 30.00th=[ 13173], 40.00th=[ 21890], 50.00th=[ 31327], 60.00th=[ 41681], | 70.00th=[ 53740], 80.00th=[ 73925], 90.00th=[104334], 95.00th=[130548], | 99.00th=[181404], 99.50th=[235930], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 62, max= 384, per=27.22%, avg=178.27, stdev=70.88, samples=71 iops : min= 3, max= 24, avg=10.35, stdev= 4.52, samples=71 lat (usec) : 100=3.78%, 250=0.91% lat (msec) : 2=2.47%, 4=3.12%, 10=8.20%, 20=7.29%, 50=34.77% lat (msec) : 100=29.30%, 250=10.16% cpu : usr=0.10%, sys=5.46%, ctx=1721, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179206: Thu Aug 27 12:26:44 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(6256KiB/37764msec) clat (usec): min=46, max=220631, avg=55350.57, stdev=35173.29 lat (usec): min=46, max=220633, avg=55352.39, stdev=35173.08 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 68], 10.00th=[ 16712], 20.00th=[ 30540], | 30.00th=[ 37487], 40.00th=[ 43254], 50.00th=[ 51119], 60.00th=[ 60031], | 70.00th=[ 67634], 80.00th=[ 78119], 90.00th=[ 96994], 95.00th=[123208], | 99.00th=[175113], 99.50th=[191890], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 60, max= 319, per=26.50%, avg=165.09, stdev=62.94, samples=74 iops : min= 3, max= 19, avg= 9.51, stdev= 3.97, samples=74 write: IOPS=9, BW=160KiB/s (164kB/s)(6032KiB/37764msec); 0 zone resets clat (usec): min=1415, max=208378, avg=42538.87, stdev=40873.32 lat (usec): min=1417, max=208380, avg=42541.74, stdev=40873.69 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2024], 10.00th=[ 3720], 20.00th=[ 7504], | 30.00th=[ 12125], 40.00th=[ 21627], 50.00th=[ 31327], 60.00th=[ 40633], | 70.00th=[ 52167], 80.00th=[ 70779], 90.00th=[102237], 95.00th=[130548], | 99.00th=[177210], 99.50th=[183501], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 350, per=23.89%, avg=156.47, stdev=71.18, samples=74 iops : min= 1, max= 21, avg= 8.97, stdev= 4.51, samples=74 lat (usec) : 50=0.52%, 100=3.52%, 250=0.78% lat (msec) : 2=2.47%, 4=2.86%, 10=6.77%, 20=8.33%, 50=32.81% lat (msec) : 100=31.90%, 250=10.03% cpu : usr=0.06%, sys=5.14%, ctx=1722, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179207: Thu Aug 27 12:26:44 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(6032KiB/36653msec) clat (usec): min=40, max=257348, avg=49796.82, stdev=35751.36 lat (usec): min=40, max=257350, avg=49800.30, stdev=35750.70 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 22938], | 30.00th=[ 32637], 40.00th=[ 41681], 50.00th=[ 47973], 60.00th=[ 56886], | 70.00th=[ 64750], 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[107480], | 99.00th=[164627], 99.50th=[242222], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 350, per=26.37%, avg=164.31, stdev=73.77, samples=72 iops : min= 1, max= 21, avg= 9.49, stdev= 4.68, samples=72 write: IOPS=10, BW=171KiB/s (175kB/s)(6256KiB/36653msec); 0 zone resets clat (usec): min=1381, max=214312, avg=45510.98, stdev=45922.19 lat (usec): min=1383, max=214315, avg=45516.09, stdev=45922.65 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1958], 10.00th=[ 3884], 20.00th=[ 7046], | 30.00th=[ 11994], 40.00th=[ 19530], 50.00th=[ 28443], 60.00th=[ 44303], | 70.00th=[ 55313], 80.00th=[ 77071], 90.00th=[110625], 95.00th=[141558], | 99.00th=[198181], 99.50th=[210764], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 446, per=26.07%, avg=170.74, stdev=77.56, samples=72 iops : min= 1, max= 27, avg= 9.88, stdev= 4.90, samples=72 lat (usec) : 50=0.52%, 100=5.60%, 250=1.17%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=3.12%, 4=2.86%, 10=8.33%, 20=7.68%, 50=29.30% lat (msec) : 100=30.34%, 250=10.42%, 500=0.13% cpu : usr=0.08%, sys=5.18%, ctx=1571, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=623KiB/s (638kB/s), 154KiB/s-166KiB/s (158kB/s-170kB/s), io=23.4MiB (24.5MB), run=36653-38441msec WRITE: bw=656KiB/s (671kB/s), 160KiB/s-177KiB/s (164kB/s-182kB/s), io=24.6MiB (25.8MB), run=36653-38441msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179199: Thu Aug 27 12:26:57 2026 read: IOPS=7, BW=113KiB/s (115kB/s)(5920KiB/52552msec) clat (msec): min=7, max=238, avg=54.69, stdev=45.45 lat (msec): min=7, max=238, avg=54.70, stdev=45.45 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 58], 80.00th=[ 79], 90.00th=[ 132], 95.00th=[ 157], | 99.00th=[ 207], 99.50th=[ 226], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 320, per=25.38%, avg=115.48, stdev=73.23, samples=99 iops : min= 1, max= 20, avg= 6.44, stdev= 4.61, samples=99 write: IOPS=7, BW=121KiB/s (124kB/s)(6368KiB/52552msec); 0 zone resets clat (msec): min=19, max=383, avg=80.95, stdev=54.71 lat (msec): min=19, max=383, avg=80.97, stdev=54.70 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 30], 10.00th=[ 34], 20.00th=[ 40], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 63], 60.00th=[ 75], | 70.00th=[ 92], 80.00th=[ 117], 90.00th=[ 161], 95.00th=[ 190], | 99.00th=[ 305], 99.50th=[ 355], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 30, max= 288, per=25.26%, avg=121.01, stdev=67.86, samples=102 iops : min= 1, max= 18, avg= 6.80, stdev= 4.32, samples=102 lat (msec) : 10=0.52%, 20=5.60%, 50=44.53%, 100=29.69%, 250=19.01% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.64%, ctx=1213, 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=179200: Thu Aug 27 12:26:57 2026 read: IOPS=6, BW=110KiB/s (112kB/s)(5744KiB/52424msec) clat (msec): min=9, max=359, avg=55.53, stdev=51.79 lat (msec): min=9, max=359, avg=55.54, stdev=51.79 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 122], 95.00th=[ 184], | 99.00th=[ 253], 99.50th=[ 342], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 381, per=25.98%, avg=118.23, stdev=71.70, samples=95 iops : min= 1, max= 23, avg= 6.61, stdev= 4.50, samples=95 write: IOPS=7, BW=125KiB/s (128kB/s)(6544KiB/52424msec); 0 zone resets clat (msec): min=20, max=393, avg=78.70, stdev=54.36 lat (msec): min=20, max=393, avg=78.71, stdev=54.36 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 46], 40.00th=[ 52], 50.00th=[ 60], 60.00th=[ 69], | 70.00th=[ 87], 80.00th=[ 111], 90.00th=[ 159], 95.00th=[ 186], | 99.00th=[ 266], 99.50th=[ 330], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 318, per=26.16%, avg=125.31, stdev=71.73, samples=102 iops : min= 1, max= 19, avg= 7.07, stdev= 4.55, samples=102 lat (msec) : 10=0.26%, 20=6.38%, 50=44.14%, 100=29.95%, 250=18.10% lat (msec) : 500=1.17% cpu : usr=0.07%, sys=1.57%, ctx=1187, 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=179201: Thu Aug 27 12:26:57 2026 read: IOPS=7, BW=120KiB/s (123kB/s)(6256KiB/52153msec) clat (msec): min=8, max=307, avg=54.72, stdev=45.89 lat (msec): min=8, max=307, avg=54.72, stdev=45.89 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 58], 80.00th=[ 78], 90.00th=[ 115], 95.00th=[ 159], | 99.00th=[ 218], 99.50th=[ 275], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 445, per=26.69%, avg=121.45, stdev=85.25, samples=101 iops : min= 1, max= 27, avg= 6.82, stdev= 5.37, samples=101 write: IOPS=7, BW=116KiB/s (118kB/s)(6032KiB/52153msec); 0 zone resets clat (msec): min=21, max=341, avg=80.79, stdev=50.83 lat (msec): min=21, max=350, avg=80.82, stdev=50.96 clat percentiles (msec): | 1.00th=[ 27], 5.00th=[ 32], 10.00th=[ 36], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 54], 50.00th=[ 65], 60.00th=[ 78], | 70.00th=[ 92], 80.00th=[ 120], 90.00th=[ 148], 95.00th=[ 182], | 99.00th=[ 271], 99.50th=[ 317], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 288, per=24.11%, avg=115.49, stdev=61.49, samples=101 iops : min= 1, max= 18, avg= 6.45, stdev= 3.92, samples=101 lat (msec) : 10=0.26%, 20=6.90%, 50=41.41%, 100=31.25%, 250=19.40% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.78%, ctx=1192, 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=179202: Thu Aug 27 12:26:57 2026 read: IOPS=7, BW=117KiB/s (119kB/s)(6032KiB/51753msec) clat (msec): min=9, max=357, avg=55.72, stdev=50.93 lat (msec): min=9, max=357, avg=55.72, stdev=50.93 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 57], 80.00th=[ 72], 90.00th=[ 121], 95.00th=[ 184], | 99.00th=[ 243], 99.50th=[ 275], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 348, per=26.28%, avg=119.59, stdev=77.77, samples=97 iops : min= 1, max= 21, avg= 6.72, stdev= 4.95, samples=97 write: IOPS=7, BW=121KiB/s (124kB/s)(6256KiB/51753msec); 0 zone resets clat (msec): min=15, max=306, avg=77.97, stdev=49.49 lat (msec): min=15, max=306, avg=77.99, stdev=49.54 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 32], 20.00th=[ 40], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 63], 60.00th=[ 72], | 70.00th=[ 90], 80.00th=[ 112], 90.00th=[ 155], 95.00th=[ 178], | 99.00th=[ 249], 99.50th=[ 266], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 349, per=25.59%, avg=122.60, stdev=67.91, samples=99 iops : min= 1, max= 21, avg= 6.90, stdev= 4.29, samples=99 lat (msec) : 10=0.26%, 20=6.90%, 50=41.80%, 100=31.38%, 250=18.88% lat (msec) : 500=0.78% cpu : usr=0.06%, sys=1.64%, ctx=1144, 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=456KiB/s (467kB/s), 110KiB/s-120KiB/s (112kB/s-123kB/s), io=23.4MiB (24.5MB), run=51753-52552msec WRITE: bw=480KiB/s (491kB/s), 116KiB/s-125KiB/s (118kB/s-128kB/s), io=24.6MiB (25.8MB), run=51753-52552msec 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=179221: Thu Aug 27 12:27:15 2026 read: IOPS=2, BW=2211KiB/s (2264kB/s)(7168KiB/3242msec) clat (usec): min=516, max=368213, avg=213005.39, stdev=138181.65 lat (usec): min=518, max=368214, avg=213006.69, stdev=138181.59 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 49546], | 30.00th=[204473], 40.00th=[204473], 50.00th=[265290], 60.00th=[295699], | 70.00th=[295699], 80.00th=[308282], 90.00th=[367002], 95.00th=[367002], | 99.00th=[367002], 99.50th=[367002], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 1878, max= 3385, per=52.27%, avg=2246.40, stdev=638.80, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1579KiB/s (1617kB/s)(5120KiB/3242msec); 0 zone resets clat (msec): min=179, max=701, avg=341.47, stdev=207.52 lat (msec): min=179, max=701, avg=341.92, stdev=207.47 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1992, max= 3757, per=43.05%, avg=2590.67, stdev=1010.19, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=13.67%, ctx=222, 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=179222: Thu Aug 27 12:27:15 2026 read: IOPS=0, BW=430KiB/s (440kB/s)(2048KiB/4764msec) clat (usec): min=598, max=228997, avg=114797.99, stdev=161502.11 lat (usec): min=600, max=229000, avg=114800.45, stdev=161503.05 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 603], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 603], 60.00th=[229639], | 70.00th=[229639], 80.00th=[229639], 90.00th=[229639], 95.00th=[229639], | 99.00th=[229639], 99.50th=[229639], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 1539, max= 1878, per=39.75%, avg=1708.50, stdev=239.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2149KiB/s (2201kB/s)(10.0MiB/4764msec); 0 zone resets clat (msec): min=165, max=1053, avg=434.96, stdev=266.16 lat (msec): min=165, max=1053, avg=435.04, stdev=266.15 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 239], | 30.00th=[ 264], 40.00th=[ 284], 50.00th=[ 334], 60.00th=[ 368], | 70.00th=[ 393], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1954, max= 4087, per=43.89%, avg=2641.33, stdev=997.87, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=10.85%, ctx=193, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179223: Thu Aug 27 12:27:15 2026 read: IOPS=1, BW=1670KiB/s (1710kB/s)(6144KiB/3680msec) clat (usec): min=398, max=364353, avg=155802.97, stdev=160988.61 lat (usec): min=399, max=364356, avg=155804.55, stdev=160988.86 clat percentiles (usec): | 1.00th=[ 400], 5.00th=[ 400], 10.00th=[ 400], 20.00th=[ 594], | 30.00th=[ 594], 40.00th=[ 43779], 50.00th=[ 43779], 60.00th=[229639], | 70.00th=[295699], 80.00th=[295699], 90.00th=[362808], 95.00th=[362808], | 99.00th=[362808], 99.50th=[362808], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 1878, max= 4047, per=76.49%, avg=3287.67, stdev=1222.02, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1670KiB/s (1710kB/s)(6144KiB/3680msec); 0 zone resets clat (msec): min=196, max=1208, avg=433.85, stdev=394.23 lat (msec): min=196, max=1208, avg=433.94, stdev=394.24 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 251], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1878, max= 4047, per=49.87%, avg=3001.33, stdev=1086.58, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.05%, sys=12.26%, ctx=156, 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=179224: Thu Aug 27 12:27:15 2026 read: IOPS=1, BW=1651KiB/s (1690kB/s)(5120KiB/3102msec) clat (usec): min=471, max=298047, avg=94689.83, stdev=134237.30 lat (usec): min=473, max=298049, avg=94691.08, stdev=134237.54 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 474], | 30.00th=[ 553], 40.00th=[ 553], 50.00th=[ 6980], 60.00th=[ 6980], | 70.00th=[166724], 80.00th=[166724], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 2023, max= 5907, per=92.25%, avg=3965.00, stdev=2746.40, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2311KiB/s (2366kB/s)(7168KiB/3102msec); 0 zone resets clat (msec): min=200, max=640, avg=366.94, stdev=170.01 lat (msec): min=200, max=640, avg=367.58, stdev=169.47 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 220], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 342], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 542], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1563, max= 2023, per=31.58%, avg=1900.20, stdev=190.29, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 10=8.33%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=13.71%, ctx=135, 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=4299KiB/s (4402kB/s), 430KiB/s-2211KiB/s (440kB/s-2264kB/s), io=20.0MiB (20.0MB), run=3102-4764msec WRITE: bw=6018KiB/s (6163kB/s), 1579KiB/s-2311KiB/s (1617kB/s-2366kB/s), io=28.0MiB (29.4MB), run=3102-4764msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179225: Thu Aug 27 12:27:15 2026 read: IOPS=1, BW=1700KiB/s (1741kB/s)(7168KiB/4216msec) clat (msec): min=75, max=974, avg=304.34, stdev=318.26 lat (msec): min=75, max=974, avg=304.35, stdev=318.26 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 112], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 178], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 439], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1528, max= 4039, per=86.14%, avg=3199.33, stdev=1447.42, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1214KiB/s (1244kB/s)(5120KiB/4216msec); 0 zone resets clat (msec): min=139, max=592, avg=396.32, stdev=178.94 lat (msec): min=139, max=592, avg=396.42, stdev=178.94 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1878, max= 2011, per=37.75%, avg=1963.00, stdev=73.82, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=4.91%, ctx=89, 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=179226: Thu Aug 27 12:27:15 2026 read: IOPS=0, BW=389KiB/s (399kB/s)(2048KiB/5261msec) clat (msec): min=144, max=673, avg=408.95, stdev=373.64 lat (msec): min=144, max=673, avg=408.95, stdev=373.64 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 676], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 2043, max= 2043, per=55.01%, avg=2043.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1946KiB/s (1993kB/s)(10.0MiB/5261msec); 0 zone resets clat (msec): min=186, max=991, avg=438.53, stdev=278.00 lat (msec): min=186, max=991, avg=438.72, stdev=277.94 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 247], | 30.00th=[ 257], 40.00th=[ 284], 50.00th=[ 288], 60.00th=[ 342], | 70.00th=[ 380], 80.00th=[ 542], 90.00th=[ 869], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1878, max= 4087, per=44.99%, avg=2339.50, stdev=857.94, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=4.07%, ctx=86, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179227: Thu Aug 27 12:27:15 2026 read: IOPS=1, BW=1363KiB/s (1396kB/s)(6144KiB/4508msec) clat (msec): min=94, max=448, avg=202.35, stdev=141.97 lat (msec): min=94, max=448, avg=202.35, stdev=141.97 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 106], | 30.00th=[ 106], 40.00th=[ 111], 50.00th=[ 111], 60.00th=[ 159], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 2000, max= 4087, per=68.07%, avg=2528.25, stdev=1039.19, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1363KiB/s (1396kB/s)(6144KiB/4508msec); 0 zone resets clat (msec): min=196, max=726, avg=456.79, stdev=212.69 lat (msec): min=196, max=726, avg=457.09, stdev=212.70 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 518], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1878, max= 2043, per=38.38%, avg=1995.80, stdev=68.41, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=4.64%, ctx=110, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179228: Thu Aug 27 12:27:15 2026 read: IOPS=0, BW=929KiB/s (951kB/s)(5120KiB/5513msec) clat (msec): min=60, max=478, avg=252.03, stdev=180.83 lat (msec): min=60, max=478, avg=252.03, stdev=180.83 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 61], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2027, max= 4087, per=73.25%, avg=2720.67, stdev=1183.33, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1300KiB/s (1331kB/s)(7168KiB/5513msec); 0 zone resets clat (msec): min=80, max=1160, avg=584.35, stdev=427.17 lat (msec): min=80, max=1160, avg=584.62, stdev=427.30 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 127], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 617], 60.00th=[ 869], | 70.00th=[ 869], 80.00th=[ 944], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1878, max= 4096, per=46.26%, avg=2405.60, stdev=947.04, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=5.03%, ctx=108, 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=3715KiB/s (3804kB/s), 389KiB/s-1700KiB/s (399kB/s-1741kB/s), io=20.0MiB (20.0MB), run=4216-5513msec WRITE: bw=5201KiB/s (5326kB/s), 1214KiB/s-1946KiB/s (1244kB/s-1993kB/s), io=28.0MiB (29.4MB), run=4216-5513msec 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=179239: Thu Aug 27 12:27:29 2026 read: IOPS=1, BW=6526KiB/s (6682kB/s)(12.0MiB/1883msec) clat (msec): min=584, max=695, avg=627.30, stdev=59.85 lat (msec): min=584, max=695, avg=627.33, stdev=59.83 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 6086, max= 8175, per=94.88%, avg=7130.50, stdev=1477.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=19.08%, ctx=443, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179240: Thu Aug 27 12:27:29 2026 read: IOPS=0, BW=1879KiB/s (1924kB/s)(4096KiB/2180msec) clat (nsec): min=749046k, max=749046k, avg=749045986.00, stdev= 0.00 lat (nsec): min=749048k, max=749048k, avg=749047609.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3758KiB/s (3848kB/s)(8192KiB/2180msec); 0 zone resets clat (msec): min=670, max=756, avg=713.93, stdev=60.81 lat (msec): min=672, max=757, avg=714.76, stdev=60.18 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=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8126, max= 8126, per=58.11%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=6.24%, ctx=131, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179242: Thu Aug 27 12:27:29 2026 write: IOPS=1, BW=5245KiB/s (5370kB/s)(12.0MiB/2343msec); 0 zone resets clat (msec): min=472, max=1288, avg=778.11, stdev=444.91 lat (msec): min=473, max=1294, avg=780.44, stdev=448.25 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8159, max= 8175, per=58.40%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.30%, sys=4.27%, ctx=53, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179243: Thu Aug 27 12:27:29 2026 write: IOPS=1, BW=7411KiB/s (7589kB/s)(12.0MiB/1658msec); 0 zone resets clat (msec): min=269, max=812, avg=551.63, stdev=271.85 lat (msec): min=270, max=812, avg=552.22, stdev=271.87 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 6681, max= 8175, per=53.11%, avg=7428.00, stdev=1056.42, 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=0.18%, sys=7.79%, ctx=74, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7516KiB/s (7696kB/s), 1879KiB/s-6526KiB/s (1924kB/s-6682kB/s), io=16.0MiB (16.8MB), run=1883-2180msec WRITE: bw=13.7MiB/s (14.3MB/s), 3758KiB/s-7411KiB/s (3848kB/s-7589kB/s), io=32.0MiB (33.6MB), run=1658-2343msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179234: Thu Aug 27 12:27:29 2026 read: IOPS=2, BW=8641KiB/s (8849kB/s)(12.0MiB/1422msec) clat (msec): min=273, max=592, avg=470.41, stdev=171.99 lat (msec): min=273, max=592, avg=470.41, stdev=171.98 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7772, max= 8159, per=100.00%, avg=7965.50, stdev=273.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=6.54%, ctx=50, 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=179235: Thu Aug 27 12:27:29 2026 read: IOPS=0, BW=1460KiB/s (1495kB/s)(4096KiB/2805msec) clat (nsec): min=1094.9M, max=1094.9M, avg=1094856822.00, stdev= 0.00 lat (nsec): min=1094.9M, max=1094.9M, avg=1094858944.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1099], 5.00th=[ 1099], 10.00th=[ 1099], 20.00th=[ 1099], | 30.00th=[ 1099], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2920KiB/s (2991kB/s)(8192KiB/2805msec); 0 zone resets clat (msec): min=196, max=1510, avg=853.62, stdev=928.76 lat (msec): min=197, max=1511, avg=854.26, stdev=929.06 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 1519], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8126, max= 8126, per=69.57%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.21%, ctx=33, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179236: Thu Aug 27 12:27:29 2026 write: IOPS=1, BW=4817KiB/s (4933kB/s)(12.0MiB/2551msec); 0 zone resets clat (msec): min=331, max=1350, avg=826.99, stdev=509.67 lat (msec): min=332, max=1350, avg=828.56, stdev=509.56 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7984, max= 8159, per=69.10%, avg=8071.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.24%, 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=179237: Thu Aug 27 12:27:29 2026 write: IOPS=1, BW=7647KiB/s (7830kB/s)(12.0MiB/1607msec); 0 zone resets clat (msec): min=218, max=1023, avg=518.28, stdev=440.46 lat (msec): min=218, max=1024, avg=518.83, stdev=440.48 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min=13407, max=13407, per=100.00%, avg=13407.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.84%, ctx=60, 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=5841KiB/s (5981kB/s), 1460KiB/s-8641KiB/s (1495kB/s-8849kB/s), io=16.0MiB (16.8MB), run=1422-2805msec WRITE: bw=11.4MiB/s (11.0MB/s), 2920KiB/s-7647KiB/s (2991kB/s-7830kB/s), io=32.0MiB (33.6MB), run=1607-2805msec