== sanity test 398b: DIO and buffer IO race ============== 22:18:31 (1789611511) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.7134 s, 7.5 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=145217: Wed Sep 16 22:21:00 2026 read: IOPS=11, BW=46.6KiB/s (47.7kB/s)(5992KiB/128551msec) clat (usec): min=34, max=1019.9k, avg=43092.50, stdev=42499.20 lat (usec): min=34, max=1019.9k, avg=43097.21, stdev=42500.81 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 65], 10.00th=[ 90], | 20.00th=[ 18220], 30.00th=[ 23987], 40.00th=[ 28967], | 50.00th=[ 35390], 60.00th=[ 42730], 70.00th=[ 51643], | 80.00th=[ 63701], 90.00th=[ 83362], 95.00th=[ 107480], | 99.00th=[ 162530], 99.50th=[ 200279], 99.90th=[ 316670], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 102, per=24.98%, avg=46.47, stdev=19.91, samples=252 iops : min= 1, max= 25, avg=10.94, stdev= 5.01, samples=252 write: IOPS=12, BW=48.0KiB/s (50.2kB/s)(6296KiB/128551msec); 0 zone resets clat (usec): min=820, max=304344, avg=40359.93, stdev=41586.48 lat (usec): min=821, max=304346, avg=40363.50, stdev=41585.50 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1336], 10.00th=[ 1631], 20.00th=[ 4146], | 30.00th=[ 7767], 40.00th=[ 17957], 50.00th=[ 29754], 60.00th=[ 41157], | 70.00th=[ 52691], 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[122160], | 99.00th=[173016], 99.50th=[202376], 99.90th=[240124], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 150, per=25.12%, avg=48.98, stdev=22.53, samples=251 iops : min= 1, max= 37, avg=11.57, stdev= 5.66, samples=251 lat (usec) : 50=0.62%, 100=4.49%, 250=0.46%, 500=0.07%, 1000=0.13% lat (msec) : 2=6.41%, 4=3.68%, 10=7.55%, 20=9.02%, 50=35.77% lat (msec) : 100=24.02%, 250=7.65%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=5.04%, ctx=6501, 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=145218: Wed Sep 16 22:21:00 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5940KiB/128645msec) clat (usec): min=29, max=310413, avg=42580.84, stdev=32502.87 lat (usec): min=29, max=310415, avg=42585.71, stdev=32504.26 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 9110], 20.00th=[ 19530], | 30.00th=[ 24773], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 51643], 80.00th=[ 62129], 90.00th=[ 79168], 95.00th=[103285], | 99.00th=[156238], 99.50th=[175113], 99.90th=[270533], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 103, per=25.12%, avg=46.73, stdev=20.22, samples=248 iops : min= 1, max= 25, avg=11.01, stdev= 5.09, samples=248 write: IOPS=12, BW=49.3KiB/s (50.5kB/s)(6348KiB/128645msec); 0 zone resets clat (usec): min=705, max=984677, avg=40916.44, stdev=50188.96 lat (usec): min=707, max=984679, avg=40930.81, stdev=50183.43 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1319], 10.00th=[ 1680], 20.00th=[ 4146], | 30.00th=[ 8291], 40.00th=[ 16909], 50.00th=[ 27395], 60.00th=[ 40633], | 70.00th=[ 53216], 80.00th=[ 68682], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[183501], 99.50th=[291505], 99.90th=[413139], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 118, per=25.29%, avg=49.31, stdev=22.80, samples=251 iops : min= 1, max= 29, avg=11.66, stdev= 5.72, samples=251 lat (usec) : 50=0.26%, 100=3.71%, 250=0.55%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.86%, 4=4.13%, 10=7.52%, 20=10.32%, 50=35.45% lat (msec) : 100=24.48%, 250=7.16%, 500=0.36%, 1000=0.03% cpu : usr=0.09%, sys=5.22%, ctx=6623, 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=145219: Wed Sep 16 22:21:00 2026 read: IOPS=11, BW=46.9KiB/s (47.0kB/s)(6028KiB/128652msec) clat (usec): min=33, max=342317, avg=39397.09, stdev=30124.59 lat (usec): min=33, max=342318, avg=39399.37, stdev=30124.83 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 119], 20.00th=[ 18482], | 30.00th=[ 23462], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 48497], 80.00th=[ 59507], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[132645], 99.50th=[160433], 99.90th=[263193], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 103, per=25.31%, avg=47.07, stdev=20.94, samples=250 iops : min= 1, max= 25, avg=11.10, stdev= 5.27, samples=250 write: IOPS=12, BW=48.7KiB/s (49.8kB/s)(6260KiB/128652msec); 0 zone resets clat (usec): min=829, max=1135.1k, avg=43949.22, stdev=52093.62 lat (usec): min=831, max=1135.1k, avg=43973.63, stdev=52102.79 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1336], 10.00th=[ 1762], | 20.00th=[ 4817], 30.00th=[ 10290], 40.00th=[ 22676], | 50.00th=[ 33817], 60.00th=[ 43254], 70.00th=[ 56361], | 80.00th=[ 72877], 90.00th=[ 99091], 95.00th=[ 126354], | 99.00th=[ 179307], 99.50th=[ 204473], 99.90th=[ 566232], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 111, per=25.06%, avg=48.86, stdev=19.72, samples=250 iops : min= 1, max= 27, avg=11.54, stdev= 4.95, samples=250 lat (usec) : 50=0.49%, 100=4.23%, 250=0.46%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.07% lat (msec) : 2=5.53%, 4=3.65%, 10=6.45%, 20=9.44%, 50=37.96% lat (msec) : 100=24.74%, 250=6.54%, 500=0.16%, 750=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.00%, ctx=6533, 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=145220: Wed Sep 16 22:21:00 2026 read: IOPS=11, BW=47.3KiB/s (48.4kB/s)(6052KiB/127990msec) clat (usec): min=30, max=1017.0k, avg=40918.25, stdev=40223.20 lat (usec): min=31, max=1017.0k, avg=40920.46, stdev=40223.02 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 65], 10.00th=[ 89], | 20.00th=[ 17957], 30.00th=[ 23462], 40.00th=[ 28181], | 50.00th=[ 34341], 60.00th=[ 41157], 70.00th=[ 50070], | 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[ 139461], 99.50th=[ 177210], 99.90th=[ 341836], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 103, per=25.53%, avg=47.48, stdev=20.43, samples=249 iops : min= 1, max= 25, avg=11.20, stdev= 5.12, samples=249 write: IOPS=12, BW=48.7KiB/s (49.9kB/s)(6236KiB/127990msec); 0 zone resets clat (usec): min=993, max=663534, avg=42077.17, stdev=46142.11 lat (usec): min=994, max=663536, avg=42089.19, stdev=46142.32 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1303], 10.00th=[ 1696], 20.00th=[ 4424], | 30.00th=[ 8717], 40.00th=[ 18744], 50.00th=[ 30016], 60.00th=[ 42730], | 70.00th=[ 56361], 80.00th=[ 70779], 90.00th=[ 96994], 95.00th=[122160], | 99.00th=[187696], 99.50th=[214959], 99.90th=[442500], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 7, max= 125, per=24.86%, avg=48.48, stdev=21.43, samples=251 iops : min= 1, max= 31, avg=11.45, stdev= 5.38, samples=251 lat (usec) : 50=0.65%, 100=4.62%, 250=0.23%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.92%, 4=3.91%, 10=6.54%, 20=10.48%, 50=35.42% lat (msec) : 100=25.23%, 250=6.64%, 500=0.13%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.18%, ctx=6518, 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=187KiB/s (191kB/s), 46.2KiB/s-47.3KiB/s (47.3kB/s-48.4kB/s), io=23.4MiB (24.6MB), run=127990-128652msec WRITE: bw=195KiB/s (200kB/s), 48.7KiB/s-49.3KiB/s (49.8kB/s-50.5kB/s), io=24.6MiB (25.7MB), run=127990-128652msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145221: Wed Sep 16 22:23:22 2026 read: IOPS=5, BW=22.4KiB/s (22.0kB/s)(5992KiB/267103msec) clat (msec): min=5, max=1013, avg=37.07, stdev=47.49 lat (msec): min=5, max=1013, avg=37.07, stdev=47.49 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 75], 95.00th=[ 103], | 99.00th=[ 203], 99.50th=[ 300], 99.90th=[ 477], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 103, per=28.20%, avg=24.82, stdev=16.84, samples=466 iops : min= 1, max= 25, avg= 5.55, stdev= 4.23, samples=466 write: IOPS=5, BW=23.6KiB/s (24.1kB/s)(6296KiB/267103msec); 0 zone resets clat (msec): min=32, max=592, avg=134.20, stdev=63.45 lat (msec): min=32, max=592, avg=134.20, stdev=63.45 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 84], | 30.00th=[ 95], 40.00th=[ 108], 50.00th=[ 121], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 178], 90.00th=[ 222], 95.00th=[ 255], | 99.00th=[ 342], 99.50th=[ 393], 99.90th=[ 485], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7, max= 56, per=25.33%, avg=23.30, stdev=10.98, samples=520 iops : min= 1, max= 14, avg= 5.16, stdev= 2.80, samples=520 lat (msec) : 10=3.74%, 20=16.41%, 50=19.37%, 100=23.73%, 250=33.63% lat (msec) : 500=3.06%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.17%, ctx=5059, 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=145222: Wed Sep 16 22:23:22 2026 read: IOPS=5, BW=21.0KiB/s (22.5kB/s)(5940KiB/270374msec) clat (msec): min=4, max=912, avg=35.46, stdev=42.80 lat (msec): min=4, max=912, avg=35.46, stdev=42.80 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 77], 95.00th=[ 103], | 99.00th=[ 182], 99.50th=[ 232], 99.90th=[ 401], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 103, per=28.13%, avg=24.75, stdev=16.80, samples=462 iops : min= 1, max= 25, avg= 5.53, stdev= 4.24, samples=462 write: IOPS=5, BW=23.5KiB/s (24.0kB/s)(6348KiB/270374msec); 0 zone resets clat (msec): min=28, max=580, avg=136.89, stdev=66.23 lat (msec): min=28, max=580, avg=136.90, stdev=66.23 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 70], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 109], 50.00th=[ 124], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 180], 90.00th=[ 224], 95.00th=[ 268], | 99.00th=[ 351], 99.50th=[ 393], 99.90th=[ 506], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 71, per=25.14%, avg=23.13, stdev=10.78, samples=526 iops : min= 1, max= 17, avg= 5.12, stdev= 2.75, samples=526 lat (msec) : 10=4.20%, 20=16.60%, 50=19.86%, 100=22.30%, 250=33.56% lat (msec) : 500=3.39%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.16%, ctx=5060, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145223: Wed Sep 16 22:23:22 2026 read: IOPS=5, BW=22.4KiB/s (22.0kB/s)(6028KiB/268567msec) clat (msec): min=5, max=368, avg=36.16, stdev=35.00 lat (msec): min=5, max=368, avg=36.16, stdev=35.00 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 52], 90.00th=[ 81], 95.00th=[ 104], | 99.00th=[ 161], 99.50th=[ 228], 99.90th=[ 317], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 104, per=28.22%, avg=24.83, stdev=17.36, samples=467 iops : min= 1, max= 26, avg= 5.55, stdev= 4.39, samples=467 write: IOPS=5, BW=23.3KiB/s (23.9kB/s)(6260KiB/268567msec); 0 zone resets clat (msec): min=30, max=1121, avg=136.54, stdev=72.15 lat (msec): min=30, max=1121, avg=136.55, stdev=72.15 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 108], 50.00th=[ 122], 60.00th=[ 138], | 70.00th=[ 155], 80.00th=[ 178], 90.00th=[ 222], 95.00th=[ 257], | 99.00th=[ 393], 99.50th=[ 447], 99.90th=[ 676], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 56, per=24.95%, avg=22.95, stdev=10.62, samples=523 iops : min= 1, max= 14, avg= 5.08, stdev= 2.72, samples=523 lat (msec) : 10=3.12%, 20=16.83%, 50=19.82%, 100=23.70%, 250=33.30% lat (msec) : 500=3.06%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.19%, ctx=5150, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145224: Wed Sep 16 22:23:22 2026 read: IOPS=5, BW=22.7KiB/s (23.2kB/s)(6052KiB/266734msec) clat (msec): min=4, max=316, avg=34.43, stdev=32.77 lat (msec): min=4, max=316, avg=34.43, stdev=32.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 72], 95.00th=[ 95], | 99.00th=[ 174], 99.50th=[ 215], 99.90th=[ 296], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 111, per=28.85%, avg=25.39, stdev=17.31, samples=460 iops : min= 1, max= 27, avg= 5.69, stdev= 4.37, samples=460 write: IOPS=5, BW=23.4KiB/s (23.9kB/s)(6236KiB/266734msec); 0 zone resets clat (msec): min=33, max=1061, avg=137.41, stdev=72.51 lat (msec): min=33, max=1061, avg=137.41, stdev=72.51 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 84], | 30.00th=[ 97], 40.00th=[ 108], 50.00th=[ 121], 60.00th=[ 134], | 70.00th=[ 155], 80.00th=[ 180], 90.00th=[ 228], 95.00th=[ 271], | 99.00th=[ 363], 99.50th=[ 430], 99.90th=[ 676], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 63, per=25.15%, avg=23.14, stdev=10.67, samples=518 iops : min= 1, max= 15, avg= 5.13, stdev= 2.72, samples=518 lat (msec) : 10=2.99%, 20=16.28%, 50=22.17%, 100=22.27%, 250=32.78% lat (msec) : 500=3.39%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.17%, ctx=4987, 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=88.8KiB/s (90.9kB/s), 21.0KiB/s-22.7KiB/s (22.5kB/s-23.2kB/s), io=23.4MiB (24.6MB), run=266734-270374msec WRITE: bw=92.0KiB/s (95.2kB/s), 23.3KiB/s-23.6KiB/s (23.9kB/s-24.1kB/s), io=24.6MiB (25.7MB), run=266734-270374msec 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=145277: Wed Sep 16 22:24:06 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(5920KiB/32172msec) clat (usec): min=44, max=271851, avg=46220.96, stdev=40058.29 lat (usec): min=45, max=271852, avg=46227.04, stdev=40062.12 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 14877], | 30.00th=[ 27132], 40.00th=[ 33162], 50.00th=[ 40633], 60.00th=[ 49021], | 70.00th=[ 56886], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[119014], | 99.00th=[200279], 99.50th=[258999], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 373, per=24.69%, avg=183.19, stdev=71.71, samples=63 iops : min= 1, max= 23, avg=10.71, stdev= 4.49, samples=63 write: IOPS=12, BW=198KiB/s (203kB/s)(6368KiB/32172msec); 0 zone resets clat (usec): min=1350, max=260294, avg=37290.55, stdev=42078.38 lat (usec): min=1353, max=260298, avg=37293.32, stdev=42078.43 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2278], 10.00th=[ 3818], 20.00th=[ 6521], | 30.00th=[ 8979], 40.00th=[ 11863], 50.00th=[ 16909], 60.00th=[ 27657], | 70.00th=[ 47973], 80.00th=[ 66323], 90.00th=[ 95945], 95.00th=[130548], | 99.00th=[175113], 99.50th=[183501], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 407, per=25.34%, avg=197.94, stdev=86.68, samples=63 iops : min= 1, max= 25, avg=11.65, stdev= 5.42, samples=63 lat (usec) : 50=0.26%, 100=6.38%, 250=1.56%, 500=0.52%, 1000=0.13% lat (msec) : 2=2.21%, 4=2.99%, 10=12.89%, 20=10.81%, 50=27.86% lat (msec) : 100=26.04%, 250=7.81%, 500=0.52% cpu : usr=0.11%, sys=5.37%, ctx=1494, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145278: Wed Sep 16 22:24:06 2026 read: IOPS=11, BW=178KiB/s (182kB/s)(5744KiB/32259msec) clat (usec): min=38, max=216194, avg=47380.56, stdev=34840.11 lat (usec): min=38, max=216195, avg=47382.17, stdev=34840.12 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 70], 10.00th=[ 81], 20.00th=[ 22414], | 30.00th=[ 30540], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 49021], | 70.00th=[ 60556], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[108528], | 99.00th=[166724], 99.50th=[198181], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 21, max= 409, per=23.98%, avg=177.94, stdev=78.98, samples=63 iops : min= 1, max= 25, avg=10.38, stdev= 5.00, samples=63 write: IOPS=12, BW=203KiB/s (208kB/s)(6544KiB/32259msec); 0 zone resets clat (usec): min=1130, max=259453, avg=36716.12, stdev=44962.54 lat (usec): min=1132, max=259454, avg=36721.53, stdev=44961.12 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1827], 10.00th=[ 2474], 20.00th=[ 4228], | 30.00th=[ 6521], 40.00th=[ 10159], 50.00th=[ 18482], 60.00th=[ 29492], | 70.00th=[ 41681], 80.00th=[ 62129], 90.00th=[ 93848], 95.00th=[126354], | 99.00th=[204473], 99.50th=[219153], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 31, max= 503, per=26.06%, avg=203.54, stdev=87.76, samples=63 iops : min= 1, max= 31, avg=12.00, stdev= 5.55, samples=63 lat (usec) : 50=0.78%, 100=5.08%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=4.04%, 4=6.64%, 10=10.81%, 20=7.42%, 50=33.46% lat (msec) : 100=22.27%, 250=8.33%, 500=0.13% cpu : usr=0.06%, sys=5.27%, ctx=1511, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145280: Wed Sep 16 22:24:06 2026 read: IOPS=12, BW=197KiB/s (201kB/s)(6256KiB/31825msec) clat (usec): min=31, max=217706, avg=45652.70, stdev=36581.49 lat (usec): min=31, max=217708, avg=45664.44, stdev=36584.92 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 69], 10.00th=[ 82], 20.00th=[ 20055], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 46924], | 70.00th=[ 57410], 80.00th=[ 65799], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[187696], 99.50th=[200279], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 62, max= 378, per=26.66%, avg=197.82, stdev=80.22, samples=62 iops : min= 3, max= 23, avg=11.66, stdev= 5.11, samples=62 write: IOPS=11, BW=190KiB/s (194kB/s)(6032KiB/31825msec); 0 zone resets clat (usec): min=1246, max=342256, avg=36739.38, stdev=41708.70 lat (usec): min=1248, max=342258, avg=36765.56, stdev=41713.87 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2008], 10.00th=[ 2933], 20.00th=[ 5407], | 30.00th=[ 8029], 40.00th=[ 12387], 50.00th=[ 21365], 60.00th=[ 32900], | 70.00th=[ 45351], 80.00th=[ 63177], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[177210], 99.50th=[214959], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 31, max= 383, per=23.98%, avg=187.29, stdev=77.86, samples=62 iops : min= 1, max= 23, avg=11.00, stdev= 4.90, samples=62 lat (usec) : 50=0.78%, 100=5.47%, 250=1.56%, 500=0.26%, 750=0.13% lat (msec) : 2=2.47%, 4=4.69%, 10=10.81%, 20=7.81%, 50=33.98% lat (msec) : 100=24.35%, 250=7.55%, 500=0.13% cpu : usr=0.09%, sys=5.33%, ctx=1509, 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=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=145282: Wed Sep 16 22:24:06 2026 read: IOPS=11, BW=190KiB/s (194kB/s)(6032KiB/31783msec) clat (usec): min=35, max=320236, avg=43375.77, stdev=38543.89 lat (usec): min=35, max=320238, avg=43401.90, stdev=38546.33 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 388], | 30.00th=[ 25822], 40.00th=[ 31851], 50.00th=[ 38536], 60.00th=[ 45876], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 83362], 95.00th=[107480], | 99.00th=[208667], 99.50th=[231736], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 64, max= 320, per=25.38%, avg=188.34, stdev=64.54, samples=62 iops : min= 4, max= 20, avg=11.03, stdev= 4.11, samples=62 write: IOPS=12, BW=197KiB/s (202kB/s)(6256KiB/31783msec); 0 zone resets clat (usec): min=1378, max=364046, avg=38810.75, stdev=45012.93 lat (usec): min=1381, max=364050, avg=38816.89, stdev=45010.91 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1844], 10.00th=[ 2606], 20.00th=[ 5211], | 30.00th=[ 8586], 40.00th=[ 14222], 50.00th=[ 25035], 60.00th=[ 34341], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[177210], 99.50th=[362808], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 31, max= 378, per=25.23%, avg=197.05, stdev=85.94, samples=62 iops : min= 1, max= 23, avg=11.58, stdev= 5.45, samples=62 lat (usec) : 50=0.65%, 100=8.07%, 250=1.04%, 500=0.13%, 1000=0.26% lat (msec) : 2=3.39%, 4=5.08%, 10=8.72%, 20=8.98%, 50=30.86% lat (msec) : 100=25.13%, 250=7.29%, 500=0.39% cpu : usr=0.09%, sys=5.24%, ctx=1515, 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=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=742KiB/s (760kB/s), 178KiB/s-197KiB/s (182kB/s-201kB/s), io=23.4MiB (24.5MB), run=31783-32259msec WRITE: bw=781KiB/s (800kB/s), 190KiB/s-203KiB/s (194kB/s-208kB/s), io=24.6MiB (25.8MB), run=31783-32259msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145279: Wed Sep 16 22:24:41 2026 read: IOPS=5, BW=87.7KiB/s (89.8kB/s)(5920KiB/67522msec) clat (msec): min=7, max=446, avg=38.90, stdev=44.09 lat (msec): min=7, max=446, avg=38.91, stdev=44.09 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 120], | 99.00th=[ 220], 99.50th=[ 305], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 30, max= 320, per=28.11%, avg=99.24, stdev=60.17, samples=116 iops : min= 1, max= 20, avg= 5.45, stdev= 3.85, samples=116 write: IOPS=5, BW=94.3KiB/s (96.6kB/s)(6368KiB/67522msec); 0 zone resets clat (msec): min=36, max=514, avg=132.84, stdev=78.12 lat (msec): min=36, max=514, avg=132.84, stdev=78.12 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 110], 60.00th=[ 122], | 70.00th=[ 144], 80.00th=[ 184], 90.00th=[ 243], 95.00th=[ 296], | 99.00th=[ 414], 99.50th=[ 439], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 31, max= 255, per=25.57%, avg=94.88, stdev=52.05, samples=131 iops : min= 1, max= 15, avg= 5.16, stdev= 3.36, samples=131 lat (msec) : 10=2.08%, 20=16.28%, 50=20.96%, 100=28.65%, 250=26.82% lat (msec) : 500=5.08%, 750=0.13% cpu : usr=0.03%, sys=1.26%, ctx=1314, 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=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=145281: Wed Sep 16 22:24:41 2026 read: IOPS=5, BW=84.8KiB/s (86.8kB/s)(5744KiB/67757msec) clat (msec): min=6, max=378, avg=39.72, stdev=45.87 lat (msec): min=6, max=378, avg=39.72, stdev=45.87 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 94], 95.00th=[ 140], | 99.00th=[ 226], 99.50th=[ 268], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 30, max= 348, per=28.40%, avg=100.26, stdev=71.26, samples=112 iops : min= 1, max= 21, avg= 5.49, stdev= 4.54, samples=112 write: IOPS=6, BW=96.6KiB/s (98.9kB/s)(6544KiB/67757msec); 0 zone resets clat (msec): min=41, max=487, avg=130.41, stdev=74.30 lat (msec): min=41, max=487, avg=130.41, stdev=74.30 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 92], 50.00th=[ 107], 60.00th=[ 124], | 70.00th=[ 144], 80.00th=[ 171], 90.00th=[ 243], 95.00th=[ 296], | 99.00th=[ 380], 99.50th=[ 405], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 30, max= 223, per=26.62%, avg=98.76, stdev=52.76, samples=130 iops : min= 1, max= 13, avg= 5.41, stdev= 3.41, samples=130 lat (msec) : 10=2.86%, 20=16.28%, 50=19.40%, 100=27.99%, 250=28.91% lat (msec) : 500=4.56% cpu : usr=0.05%, sys=1.41%, ctx=1332, 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=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=145283: Wed Sep 16 22:24:41 2026 read: IOPS=5, BW=95.3KiB/s (97.6kB/s)(6256KiB/65640msec) clat (msec): min=6, max=240, avg=37.91, stdev=39.53 lat (msec): min=6, max=240, avg=37.91, stdev=39.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 47], 90.00th=[ 94], 95.00th=[ 129], | 99.00th=[ 205], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 384, per=29.72%, avg=104.91, stdev=75.66, samples=118 iops : min= 1, max= 24, avg= 5.80, stdev= 4.79, samples=118 write: IOPS=5, BW=91.9KiB/s (94.1kB/s)(6032KiB/65640msec); 0 zone resets clat (msec): min=39, max=528, avg=133.84, stdev=76.01 lat (msec): min=39, max=528, avg=133.85, stdev=76.01 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 73], | 30.00th=[ 85], 40.00th=[ 94], 50.00th=[ 112], 60.00th=[ 128], | 70.00th=[ 155], 80.00th=[ 186], 90.00th=[ 239], 95.00th=[ 292], | 99.00th=[ 372], 99.50th=[ 464], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 30, max= 223, per=24.82%, avg=92.09, stdev=50.86, samples=129 iops : min= 1, max= 13, avg= 4.98, stdev= 3.28, samples=129 lat (msec) : 10=3.39%, 20=17.84%, 50=21.48%, 100=24.74%, 250=28.52% lat (msec) : 500=3.91%, 750=0.13% cpu : usr=0.04%, sys=1.34%, ctx=1322, 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=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=145284: Wed Sep 16 22:24:41 2026 read: IOPS=5, BW=90.0KiB/s (92.2kB/s)(6032KiB/67005msec) clat (msec): min=7, max=420, avg=40.01, stdev=46.17 lat (msec): min=7, max=420, avg=40.01, stdev=46.17 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 96], 95.00th=[ 130], | 99.00th=[ 209], 99.50th=[ 305], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 30, max= 352, per=29.87%, avg=105.45, stdev=69.47, samples=111 iops : min= 1, max= 22, avg= 5.83, stdev= 4.40, samples=111 write: IOPS=5, BW=93.4KiB/s (95.6kB/s)(6256KiB/67005msec); 0 zone resets clat (msec): min=35, max=493, avg=132.01, stdev=73.04 lat (msec): min=35, max=493, avg=132.03, stdev=73.03 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 65], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 100], 50.00th=[ 112], 60.00th=[ 125], | 70.00th=[ 144], 80.00th=[ 176], 90.00th=[ 239], 95.00th=[ 279], | 99.00th=[ 397], 99.50th=[ 489], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 31, max= 224, per=25.51%, avg=94.64, stdev=47.88, samples=129 iops : min= 1, max= 14, avg= 5.14, stdev= 3.10, samples=129 lat (msec) : 10=2.73%, 20=17.19%, 50=20.18%, 100=25.78%, 250=29.56% lat (msec) : 500=4.56% cpu : usr=0.04%, sys=1.33%, ctx=1348, 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=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=353KiB/s (362kB/s), 84.8KiB/s-95.3KiB/s (86.8kB/s-97.6kB/s), io=23.4MiB (24.5MB), run=65640-67757msec WRITE: bw=372KiB/s (381kB/s), 91.9KiB/s-96.6KiB/s (94.1kB/s-98.9kB/s), io=24.6MiB (25.8MB), run=65640-67757msec 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=145306: Wed Sep 16 22:24:57 2026 read: IOPS=1, BW=1560KiB/s (1598kB/s)(7168KiB/4594msec) clat (msec): min=2, max=2252, avg=447.63, stdev=799.74 lat (msec): min=2, max=2252, avg=447.63, stdev=799.74 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 117], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 169], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 249], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 1352, max= 4087, per=74.92%, avg=2879.25, stdev=1403.18, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1114KiB/s (1141kB/s)(5120KiB/4594msec); 0 zone resets clat (msec): min=143, max=580, avg=285.82, stdev=188.05 lat (msec): min=143, max=580, avg=285.91, stdev=188.03 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2027, max= 3900, per=49.37%, avg=2656.67, stdev=1076.79, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 250=66.67%, 500=8.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.36%, ctx=631, 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=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=145307: Wed Sep 16 22:24:57 2026 read: IOPS=0, BW=384KiB/s (394kB/s)(2048KiB/5328msec) clat (msec): min=179, max=216, avg=197.91, stdev=26.19 lat (msec): min=179, max=216, avg=197.92, stdev=26.19 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 218], 90.00th=[ 218], 95.00th=[ 218], | 99.00th=[ 218], 99.50th=[ 218], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 1347, max= 2023, per=43.85%, avg=1685.00, stdev=478.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1922KiB/s (1968kB/s)(10.0MiB/5328msec); 0 zone resets clat (msec): min=99, max=2494, avg=492.47, stdev=715.55 lat (msec): min=100, max=2494, avg=492.69, stdev=715.49 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 142], | 30.00th=[ 176], 40.00th=[ 197], 50.00th=[ 234], 60.00th=[ 300], | 70.00th=[ 355], 80.00th=[ 388], 90.00th=[ 542], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 2003, max= 4055, per=52.12%, avg=2804.80, stdev=1072.02, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.33%, ctx=142, 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=145308: Wed Sep 16 22:24:57 2026 read: IOPS=1, BW=1382KiB/s (1415kB/s)(6144KiB/4447msec) clat (usec): min=566, max=411121, avg=106529.24, stdev=159272.98 lat (usec): min=567, max=411122, avg=106530.66, stdev=159272.98 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 1975], | 30.00th=[ 1975], 40.00th=[ 2704], 50.00th=[ 2704], 60.00th=[ 88605], | 70.00th=[135267], 80.00th=[135267], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 2023, max= 4055, per=86.55%, avg=3326.00, stdev=1131.09, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1382KiB/s (1415kB/s)(6144KiB/4447msec); 0 zone resets clat (msec): min=108, max=2619, avg=634.15, stdev=980.55 lat (msec): min=108, max=2619, avg=634.22, stdev=980.55 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 359], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 2023, max= 4055, per=55.32%, avg=2976.67, stdev=1021.72, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 4=8.33%, 100=8.33%, 250=33.33%, 500=25.00% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=7.04%, ctx=93, 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=145309: Wed Sep 16 22:24:57 2026 read: IOPS=1, BW=1045KiB/s (1070kB/s)(5120KiB/4900msec) clat (usec): min=541, max=270336, avg=55766.17, stdev=119967.72 lat (usec): min=543, max=270338, avg=55767.68, stdev=119967.78 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 660], 40.00th=[ 660], 50.00th=[ 1516], 60.00th=[ 1516], | 70.00th=[ 5800], 80.00th=[ 5800], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1463KiB/s (1498kB/s)(7168KiB/4900msec); 0 zone resets clat (msec): min=118, max=2814, avg=659.15, stdev=963.97 lat (msec): min=118, max=2814, avg=659.26, stdev=963.95 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 205], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 264], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 617], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 1448, max= 4047, per=53.56%, avg=2882.25, stdev=1342.91, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 10=8.33%, 250=25.00%, 500=25.00%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=6.06%, ctx=130, 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=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=3844KiB/s (3936kB/s), 384KiB/s-1560KiB/s (394kB/s-1598kB/s), io=20.0MiB (20.0MB), run=4447-5328msec WRITE: bw=5381KiB/s (5511kB/s), 1114KiB/s-1922KiB/s (1141kB/s-1968kB/s), io=28.0MiB (29.4MB), run=4447-5328msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145301: Wed Sep 16 22:24:57 2026 read: IOPS=1, BW=1534KiB/s (1571kB/s)(7168KiB/4672msec) clat (msec): min=97, max=1997, avg=408.14, stdev=702.79 lat (msec): min=97, max=1997, avg=408.14, stdev=702.79 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 99], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 155], 80.00th=[ 251], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 2011, max= 4445, per=100.00%, avg=3498.33, stdev=1303.97, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1096KiB/s (1122kB/s)(5120KiB/4672msec); 0 zone resets clat (msec): min=259, max=515, avg=339.88, stdev=102.53 lat (msec): min=259, max=516, avg=339.96, stdev=102.50 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2011, max= 4039, per=55.43%, avg=2696.33, stdev=1162.87, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.25%, ctx=62, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145302: Wed Sep 16 22:24:57 2026 read: IOPS=0, BW=364KiB/s (373kB/s)(2048KiB/5623msec) clat (msec): min=129, max=173, avg=151.38, stdev=30.61 lat (msec): min=129, max=173, avg=151.38, stdev=30.61 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 174], 90.00th=[ 174], 95.00th=[ 174], | 99.00th=[ 174], 99.50th=[ 174], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 1467, max= 2011, per=50.06%, avg=1739.00, stdev=384.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1821KiB/s (1865kB/s)(10.0MiB/5623msec); 0 zone resets clat (msec): min=153, max=2228, avg=519.24, stdev=609.70 lat (msec): min=153, max=2228, avg=519.37, stdev=609.70 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 222], | 30.00th=[ 253], 40.00th=[ 284], 50.00th=[ 317], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 418], 90.00th=[ 493], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 1467, max= 4096, per=60.51%, avg=2943.17, stdev=1226.96, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 250=33.33%, 500=58.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.40%, ctx=216, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145303: Wed Sep 16 22:24:57 2026 read: IOPS=1, BW=1042KiB/s (1067kB/s)(6144KiB/5894msec) clat (msec): min=96, max=701, avg=349.94, stdev=259.69 lat (msec): min=96, max=701, avg=349.94, stdev=259.69 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 472], | 70.00th=[ 558], 80.00th=[ 558], 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= 2011, max= 4007, per=72.57%, avg=2521.25, stdev=990.63, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1042KiB/s (1067kB/s)(6144KiB/5894msec); 0 zone resets clat (msec): min=134, max=2674, avg=616.55, stdev=1009.21 lat (msec): min=134, max=2674, avg=616.66, stdev=1009.20 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 222], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 2003, max= 2942, per=46.13%, avg=2243.75, stdev=465.55, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.17%, ctx=65, 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=145304: Wed Sep 16 22:24:57 2026 read: IOPS=1, BW=1043KiB/s (1068kB/s)(5120KiB/4907msec) clat (msec): min=113, max=321, avg=198.51, stdev=98.78 lat (msec): min=113, max=321, avg=198.51, stdev=98.78 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 4023, max= 4039, per=100.00%, avg=4031.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1461KiB/s (1496kB/s)(7168KiB/4907msec); 0 zone resets clat (msec): min=148, max=2394, avg=552.42, stdev=815.86 lat (msec): min=149, max=2394, avg=552.51, stdev=815.87 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 171], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 241], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 372], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 2019, max= 6144, per=66.87%, avg=3252.75, stdev=1962.27, samples=4 iops : min= 1, max= 6, avg= 2.50, stdev= 2.38, samples=4 lat (msec) : 250=58.33%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.47%, ctx=53, 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=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=3475KiB/s (3558kB/s), 364KiB/s-1534KiB/s (373kB/s-1571kB/s), io=20.0MiB (20.0MB), run=4672-5894msec WRITE: bw=4865KiB/s (4981kB/s), 1042KiB/s-1821KiB/s (1067kB/s-1865kB/s), io=28.0MiB (29.4MB), run=4672-5894msec 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=145316: Wed Sep 16 22:25:10 2026 read: IOPS=0, BW=2722KiB/s (2787kB/s)(12.0MiB/4515msec) clat (msec): min=849, max=2561, avg=1434.81, stdev=976.26 lat (msec): min=849, max=2561, avg=1434.81, stdev=976.26 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 2567], 80.00th=[ 2567], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 7907, max= 8126, per=100.00%, avg=8016.50, stdev=154.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=6.91%, ctx=271, 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=145317: Wed Sep 16 22:25:10 2026 read: IOPS=0, BW=815KiB/s (835kB/s)(4096KiB/5026msec) clat (nsec): min=2712.6M, max=2712.6M, avg=2712633782.00, stdev= 0.00 lat (nsec): min=2712.6M, max=2712.6M, avg=2712634927.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2702], 5.00th=[ 2702], 10.00th=[ 2702], 20.00th=[ 2702], | 30.00th=[ 2702], 40.00th=[ 2702], 50.00th=[ 2702], 60.00th=[ 2702], | 70.00th=[ 2702], 80.00th=[ 2702], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1630KiB/s (1669kB/s)(8192KiB/5026msec); 0 zone resets clat (msec): min=342, max=1708, avg=1025.54, stdev=965.48 lat (msec): min=343, max=1708, avg=1025.94, stdev=965.43 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7922, max= 7922, per=100.00%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=6.71%, ctx=458, 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=145318: Wed Sep 16 22:25:10 2026 write: IOPS=0, BW=3500KiB/s (3584kB/s)(12.0MiB/3511msec); 0 zone resets clat (msec): min=517, max=2373, avg=1149.69, stdev=1059.93 lat (msec): min=518, max=2374, avg=1150.59, stdev=1060.30 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7907, max= 8110, per=100.00%, avg=8008.50, stdev=143.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.42%, ctx=81, 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=145320: Wed Sep 16 22:25:10 2026 write: IOPS=0, BW=3224KiB/s (3301kB/s)(12.0MiB/3812msec); 0 zone resets clat (msec): min=344, max=2226, avg=1248.46, stdev=943.24 lat (msec): min=345, max=2227, avg=1249.01, stdev=943.41 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7907, max= 8110, per=100.00%, avg=8008.50, stdev=143.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.01%, ctx=56, 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=3260KiB/s (3338kB/s), 815KiB/s-2722KiB/s (835kB/s-2787kB/s), io=16.0MiB (16.8MB), run=4515-5026msec WRITE: bw=6520KiB/s (6676kB/s), 1630KiB/s-3500KiB/s (1669kB/s-3584kB/s), io=32.0MiB (33.6MB), run=3511-5026msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145319: Wed Sep 16 22:25:11 2026 read: IOPS=0, BW=2610KiB/s (2673kB/s)(12.0MiB/4708msec) clat (msec): min=299, max=2858, avg=1555.62, stdev=1279.92 lat (msec): min=299, max=2858, avg=1555.62, stdev=1279.92 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.06%, ctx=41, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145321: Wed Sep 16 22:25:11 2026 read: IOPS=0, BW=780KiB/s (799kB/s)(4096KiB/5249msec) clat (nsec): min=2973.4M, max=2973.4M, avg=2973385216.00, stdev= 0.00 lat (nsec): min=2973.4M, max=2973.4M, avg=2973387716.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2970], 5.00th=[ 2970], 10.00th=[ 2970], 20.00th=[ 2970], | 30.00th=[ 2970], 40.00th=[ 2970], 50.00th=[ 2970], 60.00th=[ 2970], | 70.00th=[ 2970], 80.00th=[ 2970], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] 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=1561KiB/s (1598kB/s)(8192KiB/5249msec); 0 zone resets clat (msec): min=700, max=1465, avg=1082.75, stdev=541.22 lat (msec): min=700, max=1465, avg=1083.18, stdev=541.34 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 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 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=2.13%, ctx=42, 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=145322: Wed Sep 16 22:25:11 2026 write: IOPS=0, BW=2337KiB/s (2394kB/s)(12.0MiB/5257msec); 0 zone resets clat (msec): min=246, max=3259, avg=1686.97, stdev=1511.09 lat (msec): min=247, max=3260, avg=1687.76, stdev=1510.52 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 70.00th=[ 3272], 80.00th=[ 3272], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 7907, max= 8175, per=100.00%, avg=8041.00, stdev=189.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.72%, ctx=40, 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=145323: Wed Sep 16 22:25:11 2026 write: IOPS=0, BW=2779KiB/s (2846kB/s)(12.0MiB/4421msec); 0 zone resets clat (msec): min=526, max=2452, avg=1424.12, stdev=969.91 lat (msec): min=526, max=2454, avg=1424.68, stdev=970.43 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.71%, ctx=64, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=3121KiB/s (3196kB/s), 780KiB/s-2610KiB/s (799kB/s-2673kB/s), io=16.0MiB (16.8MB), run=4708-5249msec WRITE: bw=6233KiB/s (6383kB/s), 1561KiB/s-2779KiB/s (1598kB/s-2846kB/s), io=32.0MiB (33.6MB), run=4421-5257msec