== sanity test 398b: DIO and buffer IO race ============== 04:29:59 (1787387399) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.13139 s, 8.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179912: Sat Aug 22 04:32:51 2026 read: IOPS=9, BW=39.4KiB/s (40.3kB/s)(5992KiB/152234msec) clat (usec): min=47, max=251248, avg=55088.10, stdev=36070.01 lat (usec): min=48, max=251250, avg=55094.01, stdev=36069.68 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 13829], 10.00th=[ 20579], 20.00th=[ 27919], | 30.00th=[ 33424], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 55837], | 70.00th=[ 64750], 80.00th=[ 78119], 90.00th=[100140], 95.00th=[122160], | 99.00th=[187696], 99.50th=[212861], 99.90th=[244319], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 7, max= 95, per=25.14%, avg=39.22, stdev=16.99, samples=297 iops : min= 1, max= 23, avg= 9.15, stdev= 4.26, samples=297 write: IOPS=10, BW=41.4KiB/s (42.3kB/s)(6296KiB/152234msec); 0 zone resets clat (usec): min=1254, max=1084.8k, avg=43920.10, stdev=52113.63 lat (usec): min=1256, max=1084.8k, avg=43927.14, stdev=52112.46 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1795], 10.00th=[ 2933], | 20.00th=[ 5800], 30.00th=[ 10028], 40.00th=[ 19792], | 50.00th=[ 30540], 60.00th=[ 41157], 70.00th=[ 55313], | 80.00th=[ 73925], 90.00th=[ 103285], 95.00th=[ 132645], | 99.00th=[ 189793], 99.50th=[ 240124], 99.90th=[ 467665], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 144, per=25.20%, avg=41.08, stdev=21.46, samples=298 iops : min= 1, max= 36, avg= 9.62, stdev= 5.42, samples=298 lat (usec) : 50=0.07%, 100=1.43%, 250=0.26%, 500=0.03%, 1000=0.07% lat (msec) : 2=3.12%, 4=3.94%, 10=8.46%, 20=7.55%, 50=34.70% lat (msec) : 100=29.92%, 250=10.25%, 500=0.16%, 2000=0.03% cpu : usr=0.07%, sys=5.11%, ctx=6944, 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=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=179913: Sat Aug 22 04:32:51 2026 read: IOPS=9, BW=39.2KiB/s (40.1kB/s)(5940KiB/151627msec) clat (usec): min=42, max=393414, avg=55925.08, stdev=36625.63 lat (usec): min=43, max=393416, avg=55929.50, stdev=36626.01 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 14484], 10.00th=[ 20841], 20.00th=[ 29230], | 30.00th=[ 34341], 40.00th=[ 40633], 50.00th=[ 48497], 60.00th=[ 55837], | 70.00th=[ 65799], 80.00th=[ 80217], 90.00th=[102237], 95.00th=[125305], | 99.00th=[170918], 99.50th=[219153], 99.90th=[283116], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 7, max= 95, per=25.22%, avg=39.34, stdev=17.35, samples=293 iops : min= 1, max= 23, avg= 9.17, stdev= 4.37, samples=293 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6348KiB/151627msec); 0 zone resets clat (usec): min=1197, max=1132.6k, avg=42806.09, stdev=53601.75 lat (usec): min=1198, max=1132.6k, avg=42814.07, stdev=53600.95 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1713], 10.00th=[ 2900], | 20.00th=[ 6063], 30.00th=[ 10945], 40.00th=[ 19268], | 50.00th=[ 28705], 60.00th=[ 38536], 70.00th=[ 51643], | 80.00th=[ 70779], 90.00th=[ 101188], 95.00th=[ 128451], | 99.00th=[ 210764], 99.50th=[ 295699], 99.90th=[ 446694], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 111, per=25.43%, avg=41.45, stdev=20.79, samples=296 iops : min= 1, max= 27, avg= 9.72, stdev= 5.24, samples=296 lat (usec) : 50=0.07%, 100=1.43%, 250=0.03%, 500=0.03%, 1000=0.07% lat (msec) : 2=3.52%, 4=3.48%, 10=8.07%, 20=8.76%, 50=35.38% lat (msec) : 100=28.68%, 250=10.06%, 500=0.39%, 2000=0.03% cpu : usr=0.09%, sys=5.28%, ctx=6986, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179914: Sat Aug 22 04:32:51 2026 read: IOPS=9, BW=39.2KiB/s (40.2kB/s)(6028KiB/153684msec) clat (usec): min=34, max=1238.1k, avg=56181.90, stdev=48197.29 lat (usec): min=34, max=1238.1k, avg=56185.39, stdev=48198.24 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 13173], 10.00th=[ 20055], | 20.00th=[ 28181], 30.00th=[ 33817], 40.00th=[ 40109], | 50.00th=[ 47449], 60.00th=[ 56361], 70.00th=[ 66323], | 80.00th=[ 78119], 90.00th=[ 99091], 95.00th=[ 119014], | 99.00th=[ 196084], 99.50th=[ 229639], 99.90th=[ 329253], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 7, max= 96, per=25.32%, avg=39.51, stdev=18.23, samples=295 iops : min= 1, max= 24, avg= 9.23, stdev= 4.58, samples=295 write: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6260KiB/153684msec); 0 zone resets clat (usec): min=1224, max=399023, avg=43693.83, stdev=45895.96 lat (usec): min=1226, max=399025, avg=43708.14, stdev=45897.27 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1844], 10.00th=[ 3425], 20.00th=[ 6849], | 30.00th=[ 11863], 40.00th=[ 21365], 50.00th=[ 31327], 60.00th=[ 41681], | 70.00th=[ 53740], 80.00th=[ 69731], 90.00th=[101188], 95.00th=[135267], | 99.00th=[223347], 99.50th=[258999], 99.90th=[333448], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 7, max= 103, per=24.95%, avg=40.67, stdev=17.92, samples=297 iops : min= 1, max= 25, avg= 9.52, stdev= 4.49, samples=297 lat (usec) : 50=0.13%, 100=1.50%, 250=0.23% lat (msec) : 2=2.86%, 4=2.90%, 10=8.27%, 20=8.53%, 50=35.51% lat (msec) : 100=30.11%, 250=9.51%, 500=0.42%, 2000=0.03% cpu : usr=0.09%, sys=5.08%, ctx=7066, 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=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=179915: Sat Aug 22 04:32:51 2026 read: IOPS=9, BW=39.4KiB/s (40.4kB/s)(6052KiB/153522msec) clat (usec): min=35, max=1220.2k, avg=55965.75, stdev=48824.10 lat (usec): min=35, max=1220.2k, avg=55975.69, stdev=48822.49 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 14877], 10.00th=[ 20841], | 20.00th=[ 27657], 30.00th=[ 33817], 40.00th=[ 40109], | 50.00th=[ 46924], 60.00th=[ 54789], 70.00th=[ 64226], | 80.00th=[ 77071], 90.00th=[ 99091], 95.00th=[ 122160], | 99.00th=[ 212861], 99.50th=[ 233833], 99.90th=[ 392168], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 96, per=25.46%, avg=39.72, stdev=17.13, samples=295 iops : min= 1, max= 24, avg= 9.27, stdev= 4.32, samples=295 write: IOPS=10, BW=40.6KiB/s (41.6kB/s)(6236KiB/153522msec); 0 zone resets clat (usec): min=1197, max=310930, avg=43818.43, stdev=43988.70 lat (usec): min=1198, max=310932, avg=43829.60, stdev=43982.25 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1778], 10.00th=[ 3130], 20.00th=[ 6652], | 30.00th=[ 11600], 40.00th=[ 21627], 50.00th=[ 31327], 60.00th=[ 42206], | 70.00th=[ 54789], 80.00th=[ 73925], 90.00th=[104334], 95.00th=[130548], | 99.00th=[189793], 99.50th=[214959], 99.90th=[308282], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 111, per=24.87%, avg=40.55, stdev=19.09, samples=297 iops : min= 1, max= 27, avg= 9.49, stdev= 4.80, samples=297 lat (usec) : 50=0.03%, 100=1.40%, 250=0.26%, 500=0.03%, 750=0.03% lat (msec) : 2=3.12%, 4=3.35%, 10=7.55%, 20=8.24%, 50=36.39% lat (msec) : 100=29.23%, 250=9.99%, 500=0.33%, 2000=0.03% cpu : usr=0.08%, sys=4.99%, ctx=7118, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=156KiB/s (160kB/s), 39.2KiB/s-39.4KiB/s (40.1kB/s-40.4kB/s), io=23.4MiB (24.6MB), run=151627-153684msec WRITE: bw=164KiB/s (168kB/s), 40.6KiB/s-41.9KiB/s (41.6kB/s-42.9kB/s), io=24.6MiB (25.7MB), run=151627-153684msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179918: Sat Aug 22 04:33:38 2026 read: IOPS=7, BW=30.2KiB/s (30.9kB/s)(5992KiB/198430msec) clat (msec): min=6, max=1166, avg=51.98, stdev=55.62 lat (msec): min=6, max=1166, avg=51.98, stdev=55.62 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 107], 95.00th=[ 142], | 99.00th=[ 232], 99.50th=[ 338], 99.90th=[ 518], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 115, per=26.50%, avg=31.79, stdev=21.47, samples=365 iops : min= 1, max= 28, avg= 7.26, stdev= 5.40, samples=365 write: IOPS=7, BW=31.7KiB/s (32.5kB/s)(6296KiB/198430msec); 0 zone resets clat (msec): min=11, max=534, avg=76.47, stdev=58.01 lat (msec): min=11, max=534, avg=76.48, stdev=58.01 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 69], | 70.00th=[ 89], 80.00th=[ 110], 90.00th=[ 153], 95.00th=[ 190], | 99.00th=[ 284], 99.50th=[ 313], 99.90th=[ 523], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7, max= 127, per=25.25%, avg=31.81, stdev=19.85, samples=383 iops : min= 1, max= 31, avg= 7.26, stdev= 5.00, samples=383 lat (msec) : 10=1.07%, 20=8.92%, 50=44.21%, 100=27.60%, 250=16.86% lat (msec) : 500=1.17%, 750=0.13%, 2000=0.03% cpu : usr=0.06%, sys=2.05%, ctx=5084, 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=179919: Sat Aug 22 04:33:38 2026 read: IOPS=7, BW=29.8KiB/s (30.6kB/s)(5940KiB/199066msec) clat (msec): min=5, max=1240, avg=53.17, stdev=59.03 lat (msec): min=5, max=1240, avg=53.17, stdev=59.03 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 111], 95.00th=[ 155], | 99.00th=[ 259], 99.50th=[ 313], 99.90th=[ 485], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 127, per=25.91%, avg=31.10, stdev=21.26, samples=369 iops : min= 1, max= 31, avg= 7.08, stdev= 5.35, samples=369 write: IOPS=7, BW=31.9KiB/s (32.7kB/s)(6348KiB/199066msec); 0 zone resets clat (msec): min=12, max=556, avg=75.55, stdev=56.39 lat (msec): min=12, max=556, avg=75.55, stdev=56.39 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 58], 60.00th=[ 69], | 70.00th=[ 86], 80.00th=[ 110], 90.00th=[ 146], 95.00th=[ 182], | 99.00th=[ 266], 99.50th=[ 334], 99.90th=[ 527], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 103, per=25.65%, avg=32.32, stdev=19.82, samples=380 iops : min= 1, max= 25, avg= 7.39, stdev= 4.98, samples=380 lat (msec) : 10=1.07%, 20=10.12%, 50=42.68%, 100=28.06%, 250=16.83% lat (msec) : 500=1.14%, 750=0.07%, 2000=0.03% cpu : usr=0.07%, sys=2.03%, ctx=5102, 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=179920: Sat Aug 22 04:33:38 2026 read: IOPS=7, BW=30.2KiB/s (30.0kB/s)(6028KiB/199339msec) clat (msec): min=5, max=509, avg=54.12, stdev=52.41 lat (msec): min=5, max=509, avg=54.13, stdev=52.40 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 38], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 115], 95.00th=[ 157], | 99.00th=[ 279], 99.50th=[ 338], 99.90th=[ 464], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 7, max= 95, per=25.46%, avg=30.56, stdev=19.83, samples=380 iops : min= 1, max= 23, avg= 6.95, stdev= 5.00, samples=380 write: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6260KiB/199339msec); 0 zone resets clat (msec): min=9, max=1259, avg=75.11, stdev=63.49 lat (msec): min=9, max=1259, avg=75.12, stdev=63.49 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 85], 80.00th=[ 108], 90.00th=[ 146], 95.00th=[ 184], | 99.00th=[ 288], 99.50th=[ 330], 99.90th=[ 527], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 127, per=25.22%, avg=31.78, stdev=20.95, samples=380 iops : min= 1, max= 31, avg= 7.26, stdev= 5.26, samples=380 lat (msec) : 10=0.81%, 20=9.70%, 50=43.20%, 100=28.61%, 250=15.98% lat (msec) : 500=1.60%, 750=0.07%, 2000=0.03% cpu : usr=0.06%, sys=2.04%, ctx=5112, 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=179921: Sat Aug 22 04:33:38 2026 read: IOPS=7, BW=30.6KiB/s (31.4kB/s)(6052KiB/197582msec) clat (msec): min=6, max=497, avg=52.08, stdev=50.08 lat (msec): min=6, max=497, avg=52.08, stdev=50.08 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 110], 95.00th=[ 150], | 99.00th=[ 253], 99.50th=[ 309], 99.90th=[ 481], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 7, max= 103, per=26.66%, avg=31.99, stdev=21.29, samples=366 iops : min= 1, max= 25, avg= 7.31, stdev= 5.36, samples=366 write: IOPS=7, BW=31.6KiB/s (32.3kB/s)(6236KiB/197582msec); 0 zone resets clat (msec): min=14, max=1264, avg=76.08, stdev=61.83 lat (msec): min=14, max=1264, avg=76.09, stdev=61.83 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 88], 80.00th=[ 111], 90.00th=[ 146], 95.00th=[ 182], | 99.00th=[ 266], 99.50th=[ 338], 99.90th=[ 481], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 111, per=25.18%, avg=31.73, stdev=20.01, samples=380 iops : min= 1, max= 27, avg= 7.24, stdev= 5.04, samples=380 lat (msec) : 10=0.91%, 20=10.48%, 50=42.81%, 100=27.38%, 250=17.19% lat (msec) : 500=1.20%, 2000=0.03% cpu : usr=0.06%, sys=2.06%, ctx=5036, 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=120KiB/s (123kB/s), 29.8KiB/s-30.6KiB/s (30.6kB/s-31.4kB/s), io=23.4MiB (24.6MB), run=197582-199339msec WRITE: bw=126KiB/s (129kB/s), 31.4KiB/s-31.9KiB/s (32.2kB/s-32.7kB/s), io=24.6MiB (25.7MB), run=197582-199339msec 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=179971: Sat Aug 22 04:34:35 2026 read: IOPS=8, BW=139KiB/s (143kB/s)(5920KiB/42462msec) clat (usec): min=39, max=212235, avg=60843.86, stdev=39063.36 lat (usec): min=40, max=212236, avg=60846.13, stdev=39063.09 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 121], 10.00th=[ 21103], 20.00th=[ 31589], | 30.00th=[ 39060], 40.00th=[ 46924], 50.00th=[ 53740], 60.00th=[ 61604], | 70.00th=[ 72877], 80.00th=[ 87557], 90.00th=[113771], 95.00th=[141558], | 99.00th=[200279], 99.50th=[206570], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 29, max= 318, per=25.03%, avg=141.17, stdev=59.70, samples=82 iops : min= 1, max= 19, avg= 8.00, stdev= 3.74, samples=82 write: IOPS=9, BW=150KiB/s (154kB/s)(6368KiB/42462msec); 0 zone resets clat (usec): min=1754, max=326471, avg=49048.39, stdev=45791.81 lat (usec): min=1755, max=326474, avg=49054.79, stdev=45790.71 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 3163], 10.00th=[ 4883], 20.00th=[ 10421], | 30.00th=[ 17957], 40.00th=[ 26084], 50.00th=[ 35390], 60.00th=[ 46400], | 70.00th=[ 64226], 80.00th=[ 85459], 90.00th=[112722], 95.00th=[137364], | 99.00th=[191890], 99.50th=[265290], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 29, max= 319, per=26.31%, avg=156.03, stdev=71.99, samples=80 iops : min= 1, max= 19, avg= 8.95, stdev= 4.51, samples=80 lat (usec) : 50=0.13%, 100=1.95%, 250=0.65%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=3.91%, 10=5.08%, 20=8.33%, 50=32.16% lat (msec) : 100=33.33%, 250=13.02%, 500=0.26% cpu : usr=0.07%, sys=4.97%, ctx=1774, 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=179972: Sat Aug 22 04:34:35 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(5744KiB/41109msec) clat (usec): min=58, max=249383, avg=60624.65, stdev=37097.60 lat (usec): min=59, max=249385, avg=60626.49, stdev=37097.54 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 1614], 10.00th=[ 23987], 20.00th=[ 32637], | 30.00th=[ 39060], 40.00th=[ 45876], 50.00th=[ 53216], 60.00th=[ 63701], | 70.00th=[ 72877], 80.00th=[ 86508], 90.00th=[104334], 95.00th=[129500], | 99.00th=[196084], 99.50th=[225444], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 318, per=24.71%, avg=139.38, stdev=63.31, samples=80 iops : min= 1, max= 19, avg= 7.90, stdev= 3.98, samples=80 write: IOPS=9, BW=159KiB/s (163kB/s)(6544KiB/41109msec); 0 zone resets clat (usec): min=1973, max=218588, avg=46870.45, stdev=45222.15 lat (usec): min=1974, max=218592, avg=46874.02, stdev=45221.81 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 14], 40.00th=[ 22], 50.00th=[ 34], 60.00th=[ 45], | 70.00th=[ 61], 80.00th=[ 81], 90.00th=[ 109], 95.00th=[ 144], | 99.00th=[ 194], 99.50th=[ 215], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 381, per=27.20%, avg=161.29, stdev=75.31, samples=79 iops : min= 1, max= 23, avg= 9.28, stdev= 4.74, samples=79 lat (usec) : 100=1.43%, 250=0.13%, 500=0.39%, 750=0.13% lat (msec) : 2=0.52%, 4=2.86%, 10=9.51%, 20=8.46%, 50=32.55% lat (msec) : 100=31.38%, 250=12.63% cpu : usr=0.07%, sys=5.09%, ctx=1772, 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=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=179973: Sat Aug 22 04:34:35 2026 read: IOPS=9, BW=147KiB/s (151kB/s)(6256KiB/42461msec) clat (usec): min=46, max=323541, avg=63188.43, stdev=45343.47 lat (usec): min=47, max=323543, avg=63190.49, stdev=45343.37 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 88], 10.00th=[ 20317], 20.00th=[ 31851], | 30.00th=[ 37487], 40.00th=[ 45351], 50.00th=[ 54264], 60.00th=[ 62653], | 70.00th=[ 71828], 80.00th=[ 91751], 90.00th=[121111], 95.00th=[149947], | 99.00th=[223347], 99.50th=[263193], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 57, max= 314, per=26.15%, avg=147.48, stdev=54.63, samples=83 iops : min= 3, max= 19, avg= 8.42, stdev= 3.46, samples=83 write: IOPS=8, BW=142KiB/s (145kB/s)(6032KiB/42461msec); 0 zone resets clat (usec): min=1873, max=320953, avg=46335.37, stdev=43832.78 lat (usec): min=1875, max=320956, avg=46345.23, stdev=43829.11 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 10], | 30.00th=[ 18], 40.00th=[ 26], 50.00th=[ 34], 60.00th=[ 44], | 70.00th=[ 61], 80.00th=[ 79], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 209], 99.50th=[ 262], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 28, max= 412, per=23.63%, avg=140.13, stdev=74.36, samples=83 iops : min= 1, max= 25, avg= 7.94, stdev= 4.69, samples=83 lat (usec) : 50=0.26%, 100=2.99%, 250=0.39%, 500=0.13% lat (msec) : 2=0.26%, 4=2.99%, 10=7.16%, 20=6.90%, 50=32.94% lat (msec) : 100=32.29%, 250=13.15%, 500=0.52% cpu : usr=0.06%, sys=4.86%, ctx=1738, 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=179974: Sat Aug 22 04:34:35 2026 read: IOPS=9, BW=150KiB/s (153kB/s)(6032KiB/40279msec) clat (usec): min=50, max=238277, avg=58030.11, stdev=36438.41 lat (usec): min=51, max=238278, avg=58032.26, stdev=36439.43 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 78], 10.00th=[ 13042], 20.00th=[ 32375], | 30.00th=[ 41681], 40.00th=[ 46924], 50.00th=[ 53216], 60.00th=[ 61080], | 70.00th=[ 70779], 80.00th=[ 81265], 90.00th=[100140], 95.00th=[123208], | 99.00th=[185598], 99.50th=[198181], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 30, max= 318, per=26.49%, avg=149.38, stdev=57.88, samples=79 iops : min= 1, max= 19, avg= 8.53, stdev= 3.64, samples=79 write: IOPS=9, BW=155KiB/s (159kB/s)(6256KiB/40279msec); 0 zone resets clat (usec): min=1894, max=287995, avg=46195.88, stdev=43850.44 lat (usec): min=1896, max=287997, avg=46210.50, stdev=43858.03 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 10], | 30.00th=[ 15], 40.00th=[ 22], 50.00th=[ 35], 60.00th=[ 44], | 70.00th=[ 58], 80.00th=[ 75], 90.00th=[ 111], 95.00th=[ 138], | 99.00th=[ 171], 99.50th=[ 180], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 28, max= 287, per=26.23%, avg=155.53, stdev=64.24, samples=79 iops : min= 1, max= 17, avg= 8.92, stdev= 4.03, samples=79 lat (usec) : 100=3.65%, 250=0.52%, 750=0.26% lat (msec) : 2=0.39%, 4=2.34%, 10=8.20%, 20=10.03%, 50=29.04% lat (msec) : 100=33.85%, 250=11.59%, 500=0.13% cpu : usr=0.10%, sys=5.23%, ctx=1679, 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=564KiB/s (578kB/s), 139KiB/s-150KiB/s (143kB/s-153kB/s), io=23.4MiB (24.5MB), run=40279-42462msec WRITE: bw=593KiB/s (608kB/s), 142KiB/s-159KiB/s (145kB/s-163kB/s), io=24.6MiB (25.8MB), run=40279-42462msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179966: Sat Aug 22 04:34:53 2026 read: IOPS=6, BW=99.2KiB/s (102kB/s)(5920KiB/59666msec) clat (msec): min=8, max=273, avg=65.89, stdev=49.61 lat (msec): min=8, max=273, avg=65.89, stdev=49.61 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 30], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 69], 80.00th=[ 90], 90.00th=[ 144], 95.00th=[ 180], | 99.00th=[ 239], 99.50th=[ 247], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 281, per=26.67%, avg=105.06, stdev=55.36, samples=110 iops : min= 1, max= 17, avg= 5.74, stdev= 3.51, samples=110 write: IOPS=6, BW=107KiB/s (109kB/s)(6368KiB/59666msec); 0 zone resets clat (msec): min=21, max=404, avg=88.41, stdev=55.70 lat (msec): min=21, max=404, avg=88.42, stdev=55.69 clat percentiles (msec): | 1.00th=[ 25], 5.00th=[ 34], 10.00th=[ 39], 20.00th=[ 48], | 30.00th=[ 57], 40.00th=[ 65], 50.00th=[ 74], 60.00th=[ 84], | 70.00th=[ 100], 80.00th=[ 118], 90.00th=[ 161], 95.00th=[ 201], | 99.00th=[ 330], 99.50th=[ 393], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 30, max= 223, per=25.79%, avg=107.04, stdev=46.88, samples=116 iops : min= 1, max= 13, avg= 5.85, stdev= 2.97, samples=116 lat (msec) : 10=0.13%, 20=3.39%, 50=32.42%, 100=40.36%, 250=22.79% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.85%, ctx=1299, 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=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=179967: Sat Aug 22 04:34:53 2026 read: IOPS=5, BW=94.6KiB/s (96.9kB/s)(5744KiB/60705msec) clat (msec): min=8, max=374, avg=68.44, stdev=53.50 lat (msec): min=8, max=374, avg=68.44, stdev=53.50 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 61], | 70.00th=[ 73], 80.00th=[ 95], 90.00th=[ 146], 95.00th=[ 180], | 99.00th=[ 259], 99.50th=[ 271], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 29, max= 317, per=25.13%, avg=99.00, stdev=56.18, samples=112 iops : min= 1, max= 19, avg= 5.35, stdev= 3.55, samples=112 write: IOPS=6, BW=108KiB/s (110kB/s)(6544KiB/60705msec); 0 zone resets clat (msec): min=16, max=327, avg=87.19, stdev=51.32 lat (msec): min=16, max=327, avg=87.20, stdev=51.33 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 31], 10.00th=[ 35], 20.00th=[ 46], | 30.00th=[ 52], 40.00th=[ 63], 50.00th=[ 73], 60.00th=[ 87], | 70.00th=[ 104], 80.00th=[ 127], 90.00th=[ 157], 95.00th=[ 190], | 99.00th=[ 255], 99.50th=[ 268], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 318, per=26.33%, avg=109.28, stdev=54.71, samples=116 iops : min= 1, max= 19, avg= 5.99, stdev= 3.48, samples=116 lat (msec) : 10=0.26%, 20=3.52%, 50=33.46%, 100=36.98%, 250=24.61% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.81%, ctx=1280, 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=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=179968: Sat Aug 22 04:34:53 2026 read: IOPS=6, BW=105KiB/s (107kB/s)(6256KiB/59807msec) clat (msec): min=9, max=260, avg=64.15, stdev=42.98 lat (msec): min=9, max=260, avg=64.15, stdev=42.97 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 20], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 53], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 91], 90.00th=[ 125], 95.00th=[ 163], | 99.00th=[ 218], 99.50th=[ 232], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 30, max= 320, per=27.33%, avg=107.68, stdev=65.46, samples=114 iops : min= 1, max= 20, avg= 5.89, stdev= 4.16, samples=114 write: IOPS=6, BW=101KiB/s (103kB/s)(6032KiB/59807msec); 0 zone resets clat (msec): min=19, max=396, avg=91.59, stdev=56.93 lat (msec): min=19, max=396, avg=91.60, stdev=56.93 clat percentiles (msec): | 1.00th=[ 27], 5.00th=[ 35], 10.00th=[ 41], 20.00th=[ 46], | 30.00th=[ 56], 40.00th=[ 65], 50.00th=[ 72], 60.00th=[ 86], | 70.00th=[ 104], 80.00th=[ 129], 90.00th=[ 167], 95.00th=[ 215], | 99.00th=[ 296], 99.50th=[ 317], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 253, per=24.57%, avg=101.98, stdev=48.11, samples=114 iops : min= 1, max= 15, avg= 5.54, stdev= 3.03, samples=114 lat (msec) : 10=0.13%, 20=2.86%, 50=32.68%, 100=41.41%, 250=21.61% lat (msec) : 500=1.30% cpu : usr=0.06%, sys=1.85%, ctx=1329, 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=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=179970: Sat Aug 22 04:34:53 2026 read: IOPS=6, BW=100KiB/s (103kB/s)(6032KiB/60124msec) clat (msec): min=11, max=235, avg=63.17, stdev=42.70 lat (msec): min=11, max=235, avg=63.17, stdev=42.70 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 93], 90.00th=[ 126], 95.00th=[ 159], | 99.00th=[ 207], 99.50th=[ 232], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 30, max= 280, per=25.74%, avg=101.40, stdev=59.44, samples=115 iops : min= 1, max= 17, avg= 5.50, stdev= 3.76, samples=115 write: IOPS=6, BW=104KiB/s (107kB/s)(6256KiB/60124msec); 0 zone resets clat (msec): min=16, max=377, avg=91.55, stdev=58.54 lat (msec): min=16, max=377, avg=91.55, stdev=58.54 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 34], 10.00th=[ 39], 20.00th=[ 47], | 30.00th=[ 55], 40.00th=[ 62], 50.00th=[ 74], 60.00th=[ 86], | 70.00th=[ 107], 80.00th=[ 129], 90.00th=[ 169], 95.00th=[ 205], | 99.00th=[ 338], 99.50th=[ 363], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 285, per=25.19%, avg=104.53, stdev=54.34, samples=117 iops : min= 1, max= 17, avg= 5.69, stdev= 3.46, samples=117 lat (msec) : 20=3.12%, 50=33.85%, 100=38.28%, 250=23.44%, 500=1.30% cpu : usr=0.05%, sys=1.86%, ctx=1296, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=395KiB/s (404kB/s), 94.6KiB/s-105KiB/s (96.9kB/s-107kB/s), io=23.4MiB (24.5MB), run=59666-60705msec WRITE: bw=415KiB/s (425kB/s), 101KiB/s-108KiB/s (103kB/s-110kB/s), io=24.6MiB (25.8MB), run=59666-60705msec 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=179994: Sat Aug 22 04:35:12 2026 read: IOPS=1, BW=1786KiB/s (1829kB/s)(7168KiB/4013msec) clat (usec): min=758, max=561318, avg=215898.66, stdev=219214.26 lat (usec): min=759, max=561320, avg=215900.78, stdev=219214.64 clat percentiles (usec): | 1.00th=[ 758], 5.00th=[ 758], 10.00th=[ 758], 20.00th=[ 1696], | 30.00th=[ 3687], 40.00th=[ 3687], 50.00th=[274727], 60.00th=[329253], | 70.00th=[329253], 80.00th=[341836], 90.00th=[557843], 95.00th=[557843], | 99.00th=[557843], 99.50th=[557843], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 2003, max= 6131, per=100.00%, avg=4057.67, stdev=2064.06, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1276KiB/s (1306kB/s)(5120KiB/4013msec); 0 zone resets clat (msec): min=201, max=627, avg=404.35, stdev=162.52 lat (msec): min=201, max=627, avg=404.85, stdev=162.79 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1885, max= 4007, per=55.62%, avg=2594.67, stdev=1223.12, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 250=8.33%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=12.19%, ctx=221, 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=179996: Sat Aug 22 04:35:12 2026 read: IOPS=0, BW=333KiB/s (341kB/s)(2048KiB/6146msec) clat (usec): min=645, max=155256, avg=77950.62, stdev=109326.56 lat (usec): min=646, max=155257, avg=77952.06, stdev=109326.11 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 644], | 30.00th=[ 644], 40.00th=[ 644], 50.00th=[ 644], 60.00th=[156238], | 70.00th=[156238], 80.00th=[156238], 90.00th=[156238], 95.00th=[156238], | 99.00th=[156238], 99.50th=[156238], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 1519, max= 2048, per=53.53%, avg=1783.50, stdev=374.06, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1666KiB/s (1706kB/s)(10.0MiB/6146msec); 0 zone resets clat (msec): min=134, max=1486, avg=585.18, stdev=433.31 lat (msec): min=135, max=1489, avg=585.73, stdev=433.98 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 163], | 30.00th=[ 271], 40.00th=[ 300], 50.00th=[ 359], 60.00th=[ 558], | 70.00th=[ 735], 80.00th=[ 860], 90.00th=[ 986], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1885, max= 6144, per=55.52%, avg=2589.86, stdev=1568.15, samples=7 iops : min= 1, max= 6, avg= 1.71, stdev= 1.89, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=25.00%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.02%, sys=9.60%, ctx=205, 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=179999: Sat Aug 22 04:35:12 2026 read: IOPS=1, BW=1562KiB/s (1600kB/s)(6144KiB/3933msec) clat (usec): min=768, max=379403, avg=237777.27, stdev=128864.32 lat (usec): min=769, max=379405, avg=237779.10, stdev=128864.34 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 766], 10.00th=[ 766], 20.00th=[217056], | 30.00th=[217056], 40.00th=[250610], 50.00th=[250610], 60.00th=[267387], | 70.00th=[312476], 80.00th=[312476], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 2003, max= 4087, per=98.79%, avg=3291.67, stdev=1126.19, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1562KiB/s (1600kB/s)(6144KiB/3933msec); 0 zone resets clat (msec): min=90, max=1207, avg=409.37, stdev=414.40 lat (msec): min=90, max=1207, avg=409.44, stdev=414.37 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 401], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 2003, max= 4020, per=53.83%, avg=2511.25, stdev=1005.86, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=14.52%, ctx=212, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180000: Sat Aug 22 04:35:12 2026 read: IOPS=0, BW=864KiB/s (885kB/s)(5120KiB/5926msec) clat (usec): min=575, max=365247, avg=200495.23, stdev=133836.35 lat (usec): min=577, max=365250, avg=200497.41, stdev=133836.61 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 578], | 30.00th=[177210], 40.00th=[177210], 50.00th=[196084], 60.00th=[196084], | 70.00th=[263193], 80.00th=[263193], 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= 2003, max= 6144, per=100.00%, avg=4073.50, stdev=2928.13, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1210KiB/s (1239kB/s)(7168KiB/5926msec); 0 zone resets clat (msec): min=297, max=1300, avg=629.84, stdev=344.76 lat (msec): min=297, max=1300, avg=630.35, stdev=344.78 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 372], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 592], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 810], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 1885, max= 2043, per=42.81%, avg=1997.14, stdev=52.73, samples=7 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.03%, sys=8.89%, ctx=160, 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=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=3332KiB/s (3412kB/s), 333KiB/s-1786KiB/s (341kB/s-1829kB/s), io=20.0MiB (20.0MB), run=3933-6146msec WRITE: bw=4665KiB/s (4777kB/s), 1210KiB/s-1666KiB/s (1239kB/s-1706kB/s), io=28.0MiB (29.4MB), run=3933-6146msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179993: Sat Aug 22 04:35:12 2026 read: IOPS=1, BW=1750KiB/s (1792kB/s)(7168KiB/4096msec) clat (msec): min=98, max=642, avg=245.20, stdev=194.17 lat (msec): min=98, max=642, avg=245.21, stdev=194.17 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 112], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 153], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 342], 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= 1896, max= 5688, per=100.00%, avg=3785.00, stdev=1896.04, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1250KiB/s (1280kB/s)(5120KiB/4096msec); 0 zone resets clat (msec): min=331, max=647, avg=466.49, stdev=116.81 lat (msec): min=332, max=647, avg=466.60, stdev=116.80 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1565, max= 4096, per=55.12%, avg=2392.00, stdev=1151.63, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=3.42%, ctx=61, 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=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=179995: Sat Aug 22 04:35:12 2026 read: IOPS=0, BW=310KiB/s (318kB/s)(2048KiB/6605msec) clat (msec): min=157, max=773, avg=465.43, stdev=435.95 lat (msec): min=157, max=773, avg=465.43, stdev=435.96 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 2031, max= 2031, per=65.52%, avg=2031.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1550KiB/s (1588kB/s)(10.0MiB/6605msec); 0 zone resets clat (msec): min=217, max=891, avg=554.34, stdev=251.57 lat (msec): min=217, max=891, avg=554.52, stdev=251.55 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 222], | 30.00th=[ 257], 40.00th=[ 481], 50.00th=[ 584], 60.00th=[ 625], | 70.00th=[ 709], 80.00th=[ 726], 90.00th=[ 835], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1747, max= 4063, per=56.87%, avg=2468.29, stdev=1002.46, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=25.00%, 500=16.67%, 750=33.33%, 1000=25.00% cpu : usr=0.00%, sys=4.48%, ctx=150, 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=179997: Sat Aug 22 04:35:12 2026 read: IOPS=0, BW=952KiB/s (975kB/s)(6144KiB/6456msec) clat (msec): min=74, max=902, avg=466.05, stdev=327.88 lat (msec): min=74, max=902, avg=466.05, stdev=327.88 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 485], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 2043, max= 4079, per=100.00%, avg=3205.33, stdev=1048.25, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=952KiB/s (975kB/s)(6144KiB/6456msec); 0 zone resets clat (msec): min=224, max=805, avg=571.43, stdev=228.47 lat (msec): min=224, max=805, avg=571.54, stdev=228.48 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 701], | 70.00th=[ 743], 80.00th=[ 743], 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= 1787, max= 2031, per=44.34%, avg=1924.40, stdev=92.02, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=16.67%, 500=25.00%, 750=25.00%, 1000=25.00% cpu : usr=0.02%, sys=3.87%, ctx=115, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179998: Sat Aug 22 04:35:12 2026 read: IOPS=0, BW=871KiB/s (892kB/s)(5120KiB/5880msec) clat (msec): min=104, max=683, avg=335.22, stdev=255.86 lat (msec): min=104, max=683, avg=335.22, stdev=255.86 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 106], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 247], 60.00th=[ 247], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 2039, max= 5742, per=100.00%, avg=3890.50, stdev=2618.42, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1219KiB/s (1248kB/s)(7168KiB/5880msec); 0 zone resets clat (msec): min=217, max=904, avg=579.99, stdev=232.92 lat (msec): min=218, max=904, avg=580.09, stdev=232.92 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 351], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 609], 60.00th=[ 693], | 70.00th=[ 693], 80.00th=[ 735], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1787, max= 4063, per=52.55%, avg=2280.83, stdev=876.95, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=33.33%, 500=8.33%, 750=50.00%, 1000=8.33% cpu : usr=0.00%, sys=4.17%, ctx=113, 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=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=3101KiB/s (3175kB/s), 310KiB/s-1750KiB/s (318kB/s-1792kB/s), io=20.0MiB (20.0MB), run=4096-6605msec WRITE: bw=4341KiB/s (4445kB/s), 952KiB/s-1550KiB/s (975kB/s-1588kB/s), io=28.0MiB (29.4MB), run=4096-6605msec 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=180012: Sat Aug 22 04:35:32 2026 read: IOPS=0, BW=3562KiB/s (3647kB/s)(12.0MiB/3450msec) clat (msec): min=379, max=1824, avg=1149.47, stdev=727.12 lat (msec): min=379, max=1824, avg=1149.47, stdev=727.12 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7846, max= 8143, per=100.00%, avg=7994.50, stdev=210.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.99%, 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=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=180013: Sat Aug 22 04:35:32 2026 read: IOPS=0, BW=1172KiB/s (1200kB/s)(4096KiB/3494msec) clat (nsec): min=1611.2M, max=1611.2M, avg=1611233972.00, stdev= 0.00 lat (nsec): min=1611.2M, max=1611.2M, avg=1611236722.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1620], 5.00th=[ 1620], 10.00th=[ 1620], 20.00th=[ 1620], | 30.00th=[ 1620], 40.00th=[ 1620], 50.00th=[ 1620], 60.00th=[ 1620], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] 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=2345KiB/s (2401kB/s)(8192KiB/3494msec); 0 zone resets clat (msec): min=679, max=1192, avg=935.68, stdev=362.89 lat (msec): min=679, max=1194, avg=937.23, stdev=364.47 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8192, max= 8192, per=87.35%, 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=66.67% cpu : usr=0.00%, sys=2.49%, ctx=37, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180014: Sat Aug 22 04:35:32 2026 write: IOPS=0, BW=3878KiB/s (3971kB/s)(12.0MiB/3169msec); 0 zone resets clat (msec): min=934, max=1226, avg=1053.83, stdev=152.99 lat (msec): min=934, max=1230, avg=1055.50, stdev=155.09 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8094, max= 8192, per=86.83%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.71%, ctx=36, 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=180015: Sat Aug 22 04:35:32 2026 write: IOPS=1, BW=4274KiB/s (4377kB/s)(12.0MiB/2875msec); 0 zone resets clat (msec): min=273, max=1330, avg=957.32, stdev=592.75 lat (msec): min=274, max=1332, avg=957.99, stdev=592.99 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8126, max= 8126, per=86.65%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.97%, ctx=44, 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=4689KiB/s (4802kB/s), 1172KiB/s-3562KiB/s (1200kB/s-3647kB/s), io=16.0MiB (16.8MB), run=3450-3494msec WRITE: bw=9378KiB/s (9603kB/s), 2345KiB/s-4274KiB/s (2401kB/s-4377kB/s), io=32.0MiB (33.6MB), run=2875-3494msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180007: Sat Aug 22 04:35:32 2026 read: IOPS=1, BW=4563KiB/s (4672kB/s)(12.0MiB/2693msec) clat (msec): min=812, max=935, avg=879.02, stdev=62.55 lat (msec): min=812, max=935, avg=879.02, stdev=62.55 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8000, max= 8126, per=100.00%, avg=8063.00, stdev=89.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=11.40%, ctx=304, 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=180008: Sat Aug 22 04:35:32 2026 read: IOPS=0, BW=889KiB/s (910kB/s)(4096KiB/4610msec) clat (nsec): min=992894k, max=992894k, avg=992893737.00, stdev= 0.00 lat (nsec): min=992896k, max=992896k, avg=992895955.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 995], 5.00th=[ 995], 10.00th=[ 995], 20.00th=[ 995], | 30.00th=[ 995], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1777KiB/s (1820kB/s)(8192KiB/4610msec); 0 zone resets clat (msec): min=894, max=2649, avg=1771.97, stdev=1240.37 lat (msec): min=895, max=2650, avg=1772.93, stdev=1241.19 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 2635], | 70.00th=[ 2635], 80.00th=[ 2635], 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= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.43%, ctx=179, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180009: Sat Aug 22 04:35:32 2026 write: IOPS=0, BW=3611KiB/s (3698kB/s)(12.0MiB/3403msec); 0 zone resets clat (msec): min=975, max=1270, avg=1100.67, stdev=152.74 lat (msec): min=977, max=1276, avg=1103.12, stdev=155.06 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.32%, ctx=71, 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=180010: Sat Aug 22 04:35:32 2026 write: IOPS=1, BW=4119KiB/s (4218kB/s)(12.0MiB/2983msec); 0 zone resets clat (msec): min=860, max=1053, avg=972.63, stdev=100.52 lat (msec): min=860, max=1054, avg=973.02, stdev=100.52 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.03%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3554KiB/s (3639kB/s), 889KiB/s-4563KiB/s (910kB/s-4672kB/s), io=16.0MiB (16.8MB), run=2693-4610msec WRITE: bw=7108KiB/s (7279kB/s), 1777KiB/s-4119KiB/s (1820kB/s-4218kB/s), io=32.0MiB (33.6MB), run=2983-4610msec