== sanity test 398b: DIO and buffer IO race ============== 05:50:49 (1789638649) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.82534 s, 8.6 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=144725: Thu Sep 17 05:53:11 2026 read: IOPS=12, BW=51.3KiB/s (52.6kB/s)(5992KiB/116690msec) clat (usec): min=30, max=772138, avg=37845.45, stdev=32978.03 lat (usec): min=30, max=772141, avg=37847.96, stdev=32978.48 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 62], 10.00th=[ 2442], 20.00th=[ 17433], | 30.00th=[ 22414], 40.00th=[ 27395], 50.00th=[ 32113], 60.00th=[ 38011], | 70.00th=[ 45351], 80.00th=[ 55313], 90.00th=[ 71828], 95.00th=[ 89654], | 99.00th=[124257], 99.50th=[145753], 99.90th=[196084], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 118, per=26.47%, avg=51.61, stdev=21.20, samples=227 iops : min= 1, max= 29, avg=12.27, stdev= 5.34, samples=227 write: IOPS=13, BW=53.0KiB/s (55.2kB/s)(6296KiB/116690msec); 0 zone resets clat (usec): min=989, max=382710, avg=37729.03, stdev=39356.14 lat (usec): min=990, max=382713, avg=37731.69, stdev=39355.65 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1811], 20.00th=[ 3949], | 30.00th=[ 8225], 40.00th=[ 18220], 50.00th=[ 28181], 60.00th=[ 37487], | 70.00th=[ 49546], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[112722], | 99.00th=[158335], 99.50th=[214959], 99.90th=[299893], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 127, per=26.46%, avg=53.98, stdev=22.45, samples=228 iops : min= 1, max= 31, avg=12.87, stdev= 5.65, samples=228 lat (usec) : 50=0.65%, 100=3.45%, 250=0.39%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=5.99%, 4=4.39%, 10=6.97%, 20=11.85%, 50=38.67% lat (msec) : 100=22.20%, 250=4.95%, 500=0.20%, 1000=0.03% cpu : usr=0.08%, sys=5.23%, ctx=6609, 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=144727: Thu Sep 17 05:53:11 2026 read: IOPS=12, BW=48.4KiB/s (49.6kB/s)(5940KiB/122703msec) clat (usec): min=33, max=373384, avg=39202.34, stdev=30260.96 lat (usec): min=33, max=373386, avg=39206.65, stdev=30261.48 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 10814], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 28181], 50.00th=[ 33424], 60.00th=[ 39584], | 70.00th=[ 46924], 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[135267], 99.50th=[181404], 99.90th=[333448], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 5, max= 110, per=24.78%, avg=48.31, stdev=20.88, samples=240 iops : min= 1, max= 27, avg=11.44, stdev= 5.29, samples=240 write: IOPS=12, BW=51.7KiB/s (52.0kB/s)(6348KiB/122703msec); 0 zone resets clat (usec): min=1001, max=870795, avg=40305.57, stdev=45004.00 lat (usec): min=1002, max=870796, avg=40307.87, stdev=45003.69 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1270], 10.00th=[ 1893], 20.00th=[ 4555], | 30.00th=[ 8848], 40.00th=[ 20055], 50.00th=[ 30016], 60.00th=[ 40633], | 70.00th=[ 53216], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[175113], 99.50th=[244319], 99.90th=[312476], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 5, max= 123, per=25.16%, avg=51.32, stdev=21.94, samples=241 iops : min= 1, max= 30, avg=12.20, stdev= 5.51, samples=241 lat (usec) : 50=0.39%, 100=3.52%, 250=0.29%, 500=0.03%, 750=0.07% lat (msec) : 2=5.53%, 4=4.20%, 10=6.97%, 20=9.86%, 50=39.26% lat (msec) : 100=24.51%, 250=5.08%, 500=0.26%, 1000=0.03% cpu : usr=0.07%, sys=5.14%, ctx=6710, 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=144729: Thu Sep 17 05:53:11 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6028KiB/121967msec) clat (usec): min=31, max=389208, avg=38059.27, stdev=30128.49 lat (usec): min=31, max=389216, avg=38060.83, stdev=30128.53 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 59], 10.00th=[ 537], 20.00th=[ 18220], | 30.00th=[ 23200], 40.00th=[ 27657], 50.00th=[ 32113], 60.00th=[ 38536], | 70.00th=[ 45876], 80.00th=[ 56361], 90.00th=[ 70779], 95.00th=[ 85459], | 99.00th=[124257], 99.50th=[170918], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 111, per=25.43%, avg=49.59, stdev=21.24, samples=238 iops : min= 1, max= 27, avg=11.77, stdev= 5.36, samples=238 write: IOPS=12, BW=51.3KiB/s (52.6kB/s)(6260KiB/121967msec); 0 zone resets clat (usec): min=982, max=1161.3k, avg=40922.88, stdev=49946.82 lat (usec): min=983, max=1161.3k, avg=40925.90, stdev=49946.49 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1827], | 20.00th=[ 4359], 30.00th=[ 8455], 40.00th=[ 20055], | 50.00th=[ 31065], 60.00th=[ 40633], 70.00th=[ 54264], | 80.00th=[ 69731], 90.00th=[ 94897], 95.00th=[ 116917], | 99.00th=[ 175113], 99.50th=[ 200279], 99.90th=[ 471860], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 111, per=25.14%, avg=51.29, stdev=20.32, samples=239 iops : min= 1, max= 27, avg=12.19, stdev= 5.14, samples=239 lat (usec) : 50=0.46%, 100=4.07%, 250=0.26%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=5.50%, 4=3.91%, 10=7.03%, 20=10.45%, 50=38.70% lat (msec) : 100=24.09%, 250=5.05%, 500=0.23%, 2000=0.03% cpu : usr=0.08%, sys=5.08%, ctx=6773, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144731: Thu Sep 17 05:53:11 2026 read: IOPS=12, BW=49.5KiB/s (50.7kB/s)(6052KiB/122342msec) clat (usec): min=31, max=885646, avg=39320.60, stdev=36366.67 lat (usec): min=31, max=885647, avg=39323.06, stdev=36366.17 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 9503], 20.00th=[ 18482], | 30.00th=[ 23725], 40.00th=[ 28181], 50.00th=[ 33162], 60.00th=[ 39584], | 70.00th=[ 47449], 80.00th=[ 56361], 90.00th=[ 74974], 95.00th=[ 88605], | 99.00th=[133694], 99.50th=[175113], 99.90th=[387974], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 5, max= 111, per=25.25%, avg=49.24, stdev=20.85, samples=239 iops : min= 1, max= 27, avg=11.67, stdev= 5.23, samples=239 write: IOPS=12, BW=50.0KiB/s (52.2kB/s)(6236KiB/122342msec); 0 zone resets clat (usec): min=926, max=387154, avg=39969.99, stdev=41917.59 lat (usec): min=926, max=387155, avg=39972.09, stdev=41917.60 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1221], 10.00th=[ 1893], 20.00th=[ 4293], | 30.00th=[ 8586], 40.00th=[ 19268], 50.00th=[ 30278], 60.00th=[ 41157], | 70.00th=[ 54264], 80.00th=[ 66847], 90.00th=[ 89654], 95.00th=[112722], | 99.00th=[185598], 99.50th=[240124], 99.90th=[371196], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 111, per=24.76%, avg=50.51, stdev=20.45, samples=240 iops : min= 1, max= 27, avg=12.00, stdev= 5.17, samples=240 lat (usec) : 50=0.65%, 100=3.19%, 250=0.42%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=5.24%, 4=4.49%, 10=6.67%, 20=10.84%, 50=38.35% lat (msec) : 100=24.48%, 250=4.92%, 500=0.26%, 1000=0.03% cpu : usr=0.07%, sys=5.11%, ctx=6662, 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=196KiB/s (200kB/s), 48.4KiB/s-51.3KiB/s (49.6kB/s-52.6kB/s), io=23.4MiB (24.6MB), run=116690-122703msec WRITE: bw=205KiB/s (210kB/s), 50.0KiB/s-53.0KiB/s (52.2kB/s-55.2kB/s), io=24.6MiB (25.7MB), run=116690-122703msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144726: Thu Sep 17 05:55:45 2026 read: IOPS=5, BW=21.9KiB/s (22.4kB/s)(5992KiB/273973msec) clat (msec): min=5, max=832, avg=36.28, stdev=40.07 lat (msec): min=5, max=832, avg=36.28, stdev=40.07 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 71], 95.00th=[ 99], | 99.00th=[ 178], 99.50th=[ 234], 99.90th=[ 422], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 95, per=28.26%, avg=24.30, stdev=15.88, samples=477 iops : min= 1, max= 23, avg= 5.47, stdev= 4.01, samples=477 write: IOPS=5, BW=22.0KiB/s (23.5kB/s)(6296KiB/273973msec); 0 zone resets clat (msec): min=33, max=526, avg=139.23, stdev=63.90 lat (msec): min=33, max=526, avg=139.23, stdev=63.90 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 64], 10.00th=[ 74], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 140], | 70.00th=[ 161], 80.00th=[ 184], 90.00th=[ 224], 95.00th=[ 264], | 99.00th=[ 342], 99.50th=[ 405], 99.90th=[ 523], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7, max= 63, per=24.82%, avg=22.58, stdev= 9.82, samples=538 iops : min= 1, max= 15, avg= 5.04, stdev= 2.50, samples=538 lat (msec) : 10=3.52%, 20=14.13%, 50=22.33%, 100=22.36%, 250=34.18% lat (msec) : 500=3.39%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5270, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144728: Thu Sep 17 05:55:45 2026 read: IOPS=5, BW=21.5KiB/s (22.0kB/s)(5940KiB/276233msec) clat (msec): min=5, max=870, avg=36.81, stdev=41.12 lat (msec): min=5, max=870, avg=36.81, stdev=41.12 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 73], 95.00th=[ 101], | 99.00th=[ 167], 99.50th=[ 213], 99.90th=[ 422], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 102, per=28.83%, avg=24.79, stdev=16.53, samples=463 iops : min= 1, max= 25, avg= 5.59, stdev= 4.17, samples=463 write: IOPS=5, BW=22.0KiB/s (23.5kB/s)(6348KiB/276233msec); 0 zone resets clat (msec): min=40, max=525, avg=139.30, stdev=61.37 lat (msec): min=40, max=525, avg=139.30, stdev=61.37 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 186], 90.00th=[ 224], 95.00th=[ 255], | 99.00th=[ 321], 99.50th=[ 359], 99.90th=[ 447], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7, max= 56, per=24.88%, avg=22.64, stdev= 9.80, samples=540 iops : min= 1, max= 14, avg= 5.05, stdev= 2.51, samples=540 lat (msec) : 10=3.16%, 20=14.32%, 50=21.74%, 100=22.33%, 250=35.45% lat (msec) : 500=2.93%, 750=0.03%, 1000=0.03% cpu : usr=0.03%, sys=1.10%, ctx=5271, 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=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=144730: Thu Sep 17 05:55:45 2026 read: IOPS=5, BW=22.0KiB/s (22.5kB/s)(6028KiB/273869msec) clat (msec): min=5, max=421, avg=37.27, stdev=37.15 lat (msec): min=5, max=421, avg=37.27, stdev=37.15 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 73], 95.00th=[ 100], | 99.00th=[ 188], 99.50th=[ 239], 99.90th=[ 418], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 111, per=28.91%, avg=24.86, stdev=16.36, samples=469 iops : min= 1, max= 27, avg= 5.62, stdev= 4.13, samples=469 write: IOPS=5, BW=22.9KiB/s (23.4kB/s)(6260KiB/273869msec); 0 zone resets clat (msec): min=35, max=1146, avg=138.80, stdev=66.42 lat (msec): min=35, max=1146, avg=138.80, stdev=66.42 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 74], 20.00th=[ 89], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 182], 90.00th=[ 222], 95.00th=[ 259], | 99.00th=[ 342], 99.50th=[ 372], 99.90th=[ 527], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 48, per=24.89%, avg=22.65, stdev=10.06, samples=532 iops : min= 1, max= 12, avg= 5.06, stdev= 2.55, samples=532 lat (msec) : 10=3.26%, 20=14.75%, 50=21.32%, 100=23.08%, 250=34.47% lat (msec) : 500=3.06%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.15%, ctx=5260, 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=144732: Thu Sep 17 05:55:45 2026 read: IOPS=5, BW=22.2KiB/s (22.7kB/s)(6052KiB/272921msec) clat (msec): min=4, max=419, avg=35.87, stdev=34.94 lat (msec): min=4, max=419, avg=35.87, stdev=34.94 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 72], 95.00th=[ 97], | 99.00th=[ 180], 99.50th=[ 266], 99.90th=[ 296], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 88, per=28.76%, avg=24.73, stdev=16.63, samples=474 iops : min= 1, max= 22, avg= 5.58, stdev= 4.19, samples=474 write: IOPS=5, BW=22.8KiB/s (23.4kB/s)(6236KiB/272921msec); 0 zone resets clat (msec): min=38, max=938, avg=139.85, stdev=64.58 lat (msec): min=38, max=938, avg=139.85, stdev=64.58 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 128], 60.00th=[ 144], | 70.00th=[ 161], 80.00th=[ 186], 90.00th=[ 224], 95.00th=[ 259], | 99.00th=[ 330], 99.50th=[ 384], 99.90th=[ 542], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 55, per=24.85%, avg=22.61, stdev= 9.64, samples=532 iops : min= 1, max= 13, avg= 5.05, stdev= 2.47, samples=532 lat (msec) : 10=3.81%, 20=15.30%, 50=20.67%, 100=22.53%, 250=34.54% lat (msec) : 500=3.09%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.13%, ctx=5350, 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=86.9KiB/s (89.0kB/s), 21.5KiB/s-22.2KiB/s (22.0kB/s-22.7kB/s), io=23.4MiB (24.6MB), run=272921-276233msec WRITE: bw=91.0KiB/s (93.2kB/s), 22.8KiB/s-22.0KiB/s (23.4kB/s-23.5kB/s), io=24.6MiB (25.7MB), run=272921-276233msec 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=144794: Thu Sep 17 05:56:19 2026 read: IOPS=14, BW=237KiB/s (243kB/s)(5920KiB/24951msec) clat (usec): min=33, max=212997, avg=34804.10, stdev=31242.68 lat (usec): min=33, max=212999, avg=34805.27, stdev=31242.71 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 92], | 30.00th=[ 17171], 40.00th=[ 25822], 50.00th=[ 32113], 60.00th=[ 36963], | 70.00th=[ 47449], 80.00th=[ 56886], 90.00th=[ 70779], 95.00th=[ 89654], | 99.00th=[139461], 99.50th=[166724], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 93, max= 508, per=26.08%, avg=237.35, stdev=90.42, samples=49 iops : min= 5, max= 31, avg=14.08, stdev= 5.71, samples=49 write: IOPS=15, BW=255KiB/s (261kB/s)(6368KiB/24951msec); 0 zone resets clat (usec): min=1486, max=199197, avg=29701.11, stdev=31947.86 lat (usec): min=1488, max=199199, avg=29713.81, stdev=31941.90 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1745], 10.00th=[ 2245], 20.00th=[ 4080], | 30.00th=[ 6390], 40.00th=[ 9634], 50.00th=[ 17433], 60.00th=[ 26608], | 70.00th=[ 37487], 80.00th=[ 56886], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[139461], 99.50th=[173016], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 413, per=26.67%, avg=255.51, stdev=101.20, samples=49 iops : min= 1, max= 25, avg=15.24, stdev= 6.37, samples=49 lat (usec) : 50=1.43%, 100=8.33%, 250=1.56%, 500=0.52%, 1000=0.13% lat (msec) : 2=4.04%, 4=6.38%, 10=11.20%, 20=10.16%, 50=30.99% lat (msec) : 100=21.74%, 250=3.52% cpu : usr=0.06%, sys=6.03%, ctx=1391, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144795: Thu Sep 17 05:56:19 2026 read: IOPS=13, BW=218KiB/s (224kB/s)(5744KiB/26299msec) clat (usec): min=39, max=219253, avg=32220.13, stdev=28944.61 lat (usec): min=40, max=219254, avg=32221.32, stdev=28944.59 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 87], | 30.00th=[ 17171], 40.00th=[ 24249], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 43779], 80.00th=[ 52167], 90.00th=[ 66323], 95.00th=[ 78119], | 99.00th=[127402], 99.50th=[164627], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 28, max= 541, per=25.18%, avg=229.17, stdev=98.28, samples=48 iops : min= 1, max= 33, avg=13.54, stdev= 6.17, samples=48 write: IOPS=15, BW=249KiB/s (255kB/s)(6544KiB/26299msec); 0 zone resets clat (usec): min=1401, max=487826, avg=35320.05, stdev=49796.31 lat (usec): min=1403, max=487828, avg=35322.42, stdev=49796.19 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1729], 10.00th=[ 2900], 20.00th=[ 5080], | 30.00th=[ 8356], 40.00th=[ 13829], 50.00th=[ 19530], 60.00th=[ 27919], | 70.00th=[ 38536], 80.00th=[ 56361], 90.00th=[ 81265], 95.00th=[111674], | 99.00th=[295699], 99.50th=[333448], 99.90th=[488637], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 31, max= 383, per=25.25%, avg=241.90, stdev=97.03, samples=51 iops : min= 1, max= 23, avg=14.37, stdev= 6.13, samples=51 lat (usec) : 50=1.56%, 100=8.46%, 250=0.91%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.26% lat (msec) : 2=3.91%, 4=5.08%, 10=10.29%, 20=10.81%, 50=33.72% lat (msec) : 100=20.05%, 250=3.52%, 500=0.78% cpu : usr=0.06%, sys=5.74%, ctx=1439, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144796: Thu Sep 17 05:56:19 2026 read: IOPS=15, BW=243KiB/s (249kB/s)(6256KiB/25724msec) clat (usec): min=32, max=206685, avg=35240.60, stdev=30133.44 lat (usec): min=32, max=206687, avg=35242.76, stdev=30133.48 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 198], | 30.00th=[ 21103], 40.00th=[ 26608], 50.00th=[ 32900], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 54789], 90.00th=[ 67634], 95.00th=[ 85459], | 99.00th=[131597], 99.50th=[196084], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 443, per=27.40%, avg=249.33, stdev=91.22, samples=49 iops : min= 1, max= 27, avg=14.84, stdev= 5.72, samples=49 write: IOPS=14, BW=234KiB/s (240kB/s)(6032KiB/25724msec); 0 zone resets clat (usec): min=1290, max=209554, avg=30905.26, stdev=33119.60 lat (usec): min=1291, max=209556, avg=30907.62, stdev=33119.57 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1762], 10.00th=[ 2212], 20.00th=[ 4424], | 30.00th=[ 7504], 40.00th=[ 9896], 50.00th=[ 17433], 60.00th=[ 30016], | 70.00th=[ 40633], 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[152044], 99.50th=[191890], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 448, per=24.17%, avg=231.52, stdev=102.31, samples=50 iops : min= 1, max= 28, avg=13.72, stdev= 6.49, samples=50 lat (usec) : 50=0.91%, 100=8.07%, 250=1.82%, 500=0.26%, 750=0.13% lat (msec) : 2=4.56%, 4=5.08%, 10=10.94%, 20=8.72%, 50=35.42% lat (msec) : 100=20.96%, 250=3.12% cpu : usr=0.10%, sys=5.97%, ctx=1490, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144797: Thu Sep 17 05:56:19 2026 read: IOPS=15, BW=241KiB/s (247kB/s)(6032KiB/25041msec) clat (usec): min=36, max=141406, avg=34088.20, stdev=26892.96 lat (usec): min=36, max=141407, avg=34089.51, stdev=26892.97 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 84], | 30.00th=[ 20055], 40.00th=[ 26346], 50.00th=[ 33162], 60.00th=[ 39584], | 70.00th=[ 46400], 80.00th=[ 53740], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[116917], 99.50th=[127402], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 27, max= 475, per=26.39%, avg=240.12, stdev=98.05, samples=49 iops : min= 1, max= 29, avg=14.27, stdev= 6.18, samples=49 write: IOPS=15, BW=250KiB/s (256kB/s)(6256KiB/25041msec); 0 zone resets clat (usec): min=1336, max=208208, avg=30848.39, stdev=34102.97 lat (usec): min=1338, max=208210, avg=30860.32, stdev=34095.78 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1827], 10.00th=[ 2409], 20.00th=[ 4113], | 30.00th=[ 6521], 40.00th=[ 10159], 50.00th=[ 18220], 60.00th=[ 29230], | 70.00th=[ 39584], 80.00th=[ 54264], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[168821], 99.50th=[202376], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 111, max= 477, per=26.19%, avg=250.90, stdev=89.95, samples=49 iops : min= 6, max= 29, avg=14.94, stdev= 5.62, samples=49 lat (usec) : 50=1.43%, 100=8.85%, 250=0.78%, 500=0.26%, 1000=0.13% lat (msec) : 2=3.52%, 4=6.25%, 10=10.55%, 20=9.11%, 50=35.29% lat (msec) : 100=21.22%, 250=2.60% cpu : usr=0.05%, sys=6.06%, ctx=1392, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=911KiB/s (933kB/s), 218KiB/s-243KiB/s (224kB/s-249kB/s), io=23.4MiB (24.5MB), run=24951-26299msec WRITE: bw=958KiB/s (981kB/s), 234KiB/s-255KiB/s (240kB/s-261kB/s), io=24.6MiB (25.8MB), run=24951-26299msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144789: Thu Sep 17 05:57:03 2026 read: IOPS=5, BW=85.6KiB/s (87.6kB/s)(5920KiB/69191msec) clat (msec): min=7, max=251, avg=40.38, stdev=37.79 lat (msec): min=7, max=251, avg=40.38, stdev=37.79 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 77], 95.00th=[ 115], | 99.00th=[ 222], 99.50th=[ 251], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 287, per=27.56%, avg=94.24, stdev=55.78, samples=124 iops : min= 1, max= 17, avg= 5.17, stdev= 3.46, samples=124 write: IOPS=5, BW=92.0KiB/s (94.2kB/s)(6368KiB/69191msec); 0 zone resets clat (msec): min=36, max=437, avg=135.91, stdev=61.75 lat (msec): min=36, max=437, avg=135.91, stdev=61.75 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 63], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 157], 80.00th=[ 178], 90.00th=[ 218], 95.00th=[ 253], | 99.00th=[ 372], 99.50th=[ 422], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 30, max= 192, per=25.64%, avg=92.30, stdev=38.68, samples=136 iops : min= 1, max= 12, avg= 5.04, stdev= 2.47, samples=136 lat (msec) : 10=1.43%, 20=11.46%, 50=25.52%, 100=22.92%, 250=35.68% lat (msec) : 500=2.99% cpu : usr=0.04%, sys=1.22%, ctx=1289, 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=144790: Thu Sep 17 05:57:03 2026 read: IOPS=5, BW=82.2KiB/s (84.2kB/s)(5744KiB/69881msec) clat (msec): min=7, max=252, avg=40.28, stdev=34.68 lat (msec): min=7, max=252, avg=40.28, stdev=34.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 57], 90.00th=[ 80], 95.00th=[ 115], | 99.00th=[ 182], 99.50th=[ 188], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 30, max= 382, per=27.43%, avg=93.82, stdev=63.77, samples=120 iops : min= 1, max= 23, avg= 5.13, stdev= 4.03, samples=120 write: IOPS=5, BW=93.6KiB/s (95.9kB/s)(6544KiB/69881msec); 0 zone resets clat (msec): min=40, max=481, avg=135.12, stdev=63.55 lat (msec): min=40, max=481, avg=135.12, stdev=63.55 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 87], | 30.00th=[ 96], 40.00th=[ 112], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 174], 90.00th=[ 211], 95.00th=[ 253], | 99.00th=[ 351], 99.50th=[ 363], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 31, max= 286, per=25.91%, avg=93.27, stdev=41.92, samples=138 iops : min= 1, max= 17, avg= 5.09, stdev= 2.66, samples=138 lat (msec) : 10=1.82%, 20=11.85%, 50=22.40%, 100=24.61%, 250=36.20% lat (msec) : 500=3.12% cpu : usr=0.04%, sys=1.27%, ctx=1375, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144791: Thu Sep 17 05:57:03 2026 read: IOPS=5, BW=93.5KiB/s (95.8kB/s)(6256KiB/66893msec) clat (msec): min=6, max=257, avg=39.72, stdev=34.99 lat (msec): min=6, max=257, avg=39.72, stdev=34.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 52], 90.00th=[ 74], 95.00th=[ 108], | 99.00th=[ 197], 99.50th=[ 226], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 317, per=29.42%, avg=100.61, stdev=63.49, samples=123 iops : min= 1, max= 19, avg= 5.56, stdev= 3.99, samples=123 write: IOPS=5, BW=90.2KiB/s (92.3kB/s)(6032KiB/66893msec); 0 zone resets clat (msec): min=50, max=410, avg=135.75, stdev=58.28 lat (msec): min=50, max=410, avg=135.75, stdev=58.28 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 91], | 30.00th=[ 100], 40.00th=[ 110], 50.00th=[ 122], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 180], 90.00th=[ 213], 95.00th=[ 247], | 99.00th=[ 347], 99.50th=[ 384], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 30, max= 192, per=24.93%, avg=89.77, stdev=36.50, samples=132 iops : min= 1, max= 12, avg= 4.88, stdev= 2.34, samples=132 lat (msec) : 10=1.30%, 20=13.93%, 50=25.00%, 100=22.66%, 250=34.77% lat (msec) : 500=2.34% cpu : usr=0.05%, sys=1.25%, ctx=1370, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144792: Thu Sep 17 05:57:03 2026 read: IOPS=5, BW=89.6KiB/s (91.8kB/s)(6032KiB/67296msec) clat (msec): min=6, max=220, avg=40.41, stdev=37.68 lat (msec): min=6, max=220, avg=40.41, stdev=37.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 82], 95.00th=[ 122], | 99.00th=[ 205], 99.50th=[ 220], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 320, per=28.94%, avg=98.99, stdev=61.00, samples=119 iops : min= 1, max= 20, avg= 5.45, stdev= 3.92, samples=119 write: IOPS=5, BW=92.0KiB/s (95.2kB/s)(6256KiB/67296msec); 0 zone resets clat (msec): min=40, max=521, avg=132.99, stdev=60.74 lat (msec): min=40, max=521, avg=132.99, stdev=60.74 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 109], 50.00th=[ 121], 60.00th=[ 134], | 70.00th=[ 150], 80.00th=[ 171], 90.00th=[ 205], 95.00th=[ 247], | 99.00th=[ 384], 99.50th=[ 414], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 31, max= 191, per=26.14%, avg=94.09, stdev=36.07, samples=131 iops : min= 1, max= 11, avg= 5.15, stdev= 2.29, samples=131 lat (msec) : 10=1.56%, 20=11.98%, 50=25.52%, 100=22.53%, 250=36.20% lat (msec) : 500=2.08%, 750=0.13% cpu : usr=0.05%, sys=1.28%, ctx=1293, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=343KiB/s (351kB/s), 82.2KiB/s-93.5KiB/s (84.2kB/s-95.8kB/s), io=23.4MiB (24.5MB), run=66893-69881msec WRITE: bw=361KiB/s (369kB/s), 90.2KiB/s-93.6KiB/s (92.3kB/s-95.9kB/s), io=24.6MiB (25.8MB), run=66893-69881msec 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=144814: Thu Sep 17 05:57:24 2026 read: IOPS=0, BW=933KiB/s (955kB/s)(7168KiB/7682msec) clat (msec): min=161, max=792, avg=382.48, stdev=247.70 lat (msec): min=161, max=792, avg=382.48, stdev=247.70 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 176], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 266], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1633, max= 3245, per=90.97%, avg=2157.00, stdev=629.96, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=666KiB/s (682kB/s)(5120KiB/7682msec); 0 zone resets clat (msec): min=239, max=3166, avg=973.21, stdev=1232.62 lat (msec): min=239, max=3166, avg=973.29, stdev=1232.62 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 1633, max= 1914, per=54.88%, avg=1821.60, stdev=108.98, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=33.33%, 500=16.67%, 750=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.38%, ctx=203, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144815: Thu Sep 17 05:57:24 2026 read: IOPS=0, BW=237KiB/s (243kB/s)(2048KiB/8637msec) clat (msec): min=461, max=3141, avg=1801.63, stdev=1895.38 lat (msec): min=461, max=3141, avg=1801.63, stdev=1895.38 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 3138], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 1845, max= 2031, per=81.74%, avg=1938.00, stdev=131.52, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1186KiB/s (1214kB/s)(10.0MiB/8637msec); 0 zone resets clat (msec): min=229, max=1223, avg=484.19, stdev=288.73 lat (msec): min=235, max=1230, avg=485.66, stdev=289.87 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 259], | 30.00th=[ 317], 40.00th=[ 321], 50.00th=[ 368], 60.00th=[ 493], | 70.00th=[ 506], 80.00th=[ 514], 90.00th=[ 617], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1848, max= 4079, per=66.78%, avg=2216.38, stdev=756.52, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 250=8.33%, 500=50.00%, 750=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=7.80%, ctx=528, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144816: Thu Sep 17 05:57:24 2026 read: IOPS=0, BW=790KiB/s (809kB/s)(6144KiB/7778msec) clat (usec): min=564, max=498430, avg=238447.33, stdev=200354.81 lat (usec): min=566, max=498432, avg=238448.51, stdev=200354.72 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 3916], | 30.00th=[ 3916], 40.00th=[244319], 50.00th=[244319], 60.00th=[337642], | 70.00th=[346031], 80.00th=[346031], 90.00th=[497026], 95.00th=[497026], | 99.00th=[497026], 99.50th=[497026], 99.90th=[497026], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 1633, max= 5535, per=100.00%, avg=3005.33, stdev=2193.39, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=0, BW=790KiB/s (809kB/s)(6144KiB/7778msec); 0 zone resets clat (msec): min=170, max=3877, avg=1028.16, stdev=1440.68 lat (msec): min=170, max=3877, avg=1028.25, stdev=1440.69 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 447], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 3876], 95.00th=[ 3876], | 99.00th=[ 3876], 99.50th=[ 3876], 99.90th=[ 3876], 99.95th=[ 3876], | 99.99th=[ 3876] bw ( KiB/s): min= 1633, max= 1917, per=55.36%, avg=1837.50, stdev=104.97, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=25.00%, 500=41.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.02%, ctx=201, 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=144817: Thu Sep 17 05:57:24 2026 read: IOPS=0, BW=737KiB/s (754kB/s)(5120KiB/6950msec) clat (msec): min=10, max=429, avg=200.26, stdev=159.69 lat (msec): min=10, max=429, avg=200.26, stdev=159.69 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 11], 10.00th=[ 11], 20.00th=[ 11], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1633, max= 4063, per=100.00%, avg=2537.67, stdev=1328.59, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1031KiB/s (1056kB/s)(7168KiB/6950msec); 0 zone resets clat (msec): min=161, max=3032, avg=839.62, stdev=1002.43 lat (msec): min=161, max=3032, avg=840.11, stdev=1002.17 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 243], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 468], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 919], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 1542, max= 3696, per=66.61%, avg=2210.80, stdev=849.89, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 20=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=5.53%, ctx=169, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2371KiB/s (2428kB/s), 237KiB/s-933KiB/s (243kB/s-955kB/s), io=20.0MiB (20.0MB), run=6950-8637msec WRITE: bw=3320KiB/s (3399kB/s), 666KiB/s-1186KiB/s (682kB/s-1214kB/s), io=28.0MiB (29.4MB), run=6950-8637msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144819: Thu Sep 17 05:57:25 2026 read: IOPS=0, BW=872KiB/s (893kB/s)(7168KiB/8222msec) clat (msec): min=90, max=768, avg=302.00, stdev=256.83 lat (msec): min=90, max=768, avg=302.00, stdev=256.83 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 100], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 211], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 535], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1954, max= 2048, per=89.85%, avg=2005.50, stdev=42.84, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 write: IOPS=0, BW=623KiB/s (638kB/s)(5120KiB/8222msec); 0 zone resets clat (msec): min=153, max=3824, avg=1172.17, stdev=1516.48 lat (msec): min=153, max=3824, avg=1173.31, stdev=1516.00 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 3809], 95.00th=[ 3809], | 99.00th=[ 3809], 99.50th=[ 3809], 99.90th=[ 3809], 99.95th=[ 3809], | 99.99th=[ 3809] bw ( KiB/s): min= 1872, max= 4071, per=80.31%, avg=2509.75, stdev=1044.13, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=16.67%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.82%, ctx=87, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144820: Thu Sep 17 05:57:25 2026 read: IOPS=0, BW=226KiB/s (231kB/s)(2048KiB/9074msec) clat (msec): min=52, max=3150, avg=1601.53, stdev=2190.22 lat (msec): min=52, max=3150, avg=1601.54, stdev=2190.22 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 53], | 30.00th=[ 53], 40.00th=[ 53], 50.00th=[ 53], 60.00th=[ 3138], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 1984, max= 2035, per=90.03%, avg=2009.50, stdev=36.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1128KiB/s (1156kB/s)(10.0MiB/9074msec); 0 zone resets clat (msec): min=183, max=1544, avg=554.34, stdev=427.71 lat (msec): min=183, max=1544, avg=554.46, stdev=427.68 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 218], 40.00th=[ 284], 50.00th=[ 426], 60.00th=[ 477], | 70.00th=[ 592], 80.00th=[ 684], 90.00th=[ 961], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 1872, max= 6107, per=95.93%, avg=2997.83, stdev=1719.78, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=3.57%, ctx=154, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144821: Thu Sep 17 05:57:25 2026 read: IOPS=0, BW=734KiB/s (752kB/s)(6144KiB/8365msec) clat (msec): min=65, max=1199, avg=405.11, stdev=520.02 lat (msec): min=65, max=1199, avg=405.11, stdev=520.02 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 73], | 30.00th=[ 73], 40.00th=[ 79], 50.00th=[ 79], 60.00th=[ 80], | 70.00th=[ 936], 80.00th=[ 936], 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= 1872, max= 6107, per=100.00%, avg=3342.33, stdev=2395.89, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=0, BW=734KiB/s (752kB/s)(6144KiB/8365msec); 0 zone resets clat (msec): min=120, max=3552, avg=973.94, stdev=1338.06 lat (msec): min=121, max=3553, avg=974.36, stdev=1338.16 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 368], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 1957, max= 4087, per=100.00%, avg=3371.67, stdev=1225.16, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=33.33%, 250=16.67%, 500=16.67%, 1000=8.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=2.10%, ctx=71, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144822: Thu Sep 17 05:57:25 2026 read: IOPS=0, BW=558KiB/s (571kB/s)(5120KiB/9175msec) clat (msec): min=61, max=418, avg=213.70, stdev=185.55 lat (msec): min=61, max=418, avg=213.70, stdev=185.55 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 71], 40.00th=[ 71], 50.00th=[ 104], 60.00th=[ 104], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2048, max= 6107, per=100.00%, avg=4077.50, stdev=2870.15, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=0, BW=781KiB/s (800kB/s)(7168KiB/9175msec); 0 zone resets clat (msec): min=195, max=3486, avg=1125.52, stdev=1106.80 lat (msec): min=195, max=3486, avg=1125.62, stdev=1106.79 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 305], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 885], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1200], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 1984, max= 4087, per=75.97%, avg=2374.17, stdev=839.46, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 0.82, samples=6 lat (msec) : 100=16.67%, 250=16.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=1.31%, ctx=63, 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=2232KiB/s (2286kB/s), 226KiB/s-872KiB/s (231kB/s-893kB/s), io=20.0MiB (20.0MB), run=8222-9175msec WRITE: bw=3125KiB/s (3200kB/s), 623KiB/s-1128KiB/s (638kB/s-1156kB/s), io=28.0MiB (29.4MB), run=8222-9175msec 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=144828: Thu Sep 17 05:57:37 2026 read: IOPS=1, BW=4526KiB/s (4635kB/s)(12.0MiB/2715msec) clat (msec): min=761, max=971, avg=871.35, stdev=105.23 lat (msec): min=761, max=971, avg=871.35, stdev=105.24 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7984, max= 8175, per=100.00%, avg=8079.50, stdev=135.06, 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=14.04%, ctx=293, 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=144829: Thu Sep 17 05:57:37 2026 read: IOPS=0, BW=1053KiB/s (1078kB/s)(4096KiB/3891msec) clat (nsec): min=1060.9M, max=1060.9M, avg=1060947691.00, stdev= 0.00 lat (nsec): min=1060.9M, max=1060.9M, avg=1060950017.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1062], 5.00th=[ 1062], 10.00th=[ 1062], 20.00th=[ 1062], | 30.00th=[ 1062], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2105KiB/s (2156kB/s)(8192KiB/3891msec); 0 zone resets clat (msec): min=488, max=2282, avg=1385.57, stdev=1268.47 lat (msec): min=489, max=2283, avg=1386.35, stdev=1268.98 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 2299], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7907, max= 7907, per=93.90%, avg=7907.00, 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=4.22%, ctx=190, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144830: Thu Sep 17 05:57:37 2026 write: IOPS=0, BW=3232KiB/s (3310kB/s)(12.0MiB/3802msec); 0 zone resets clat (msec): min=1109, max=1415, avg=1241.75, stdev=157.27 lat (msec): min=1110, max=1419, avg=1244.32, stdev=158.46 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7907, max= 7953, per=94.17%, avg=7930.00, stdev=32.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=4.21%, ctx=68, 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=144831: Thu Sep 17 05:57:37 2026 write: IOPS=1, BW=6444KiB/s (6598kB/s)(12.0MiB/1907msec); 0 zone resets clat (msec): min=540, max=670, avg=615.65, stdev=67.47 lat (msec): min=540, max=670, avg=616.09, stdev=67.44 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7907, max= 8175, per=95.49%, avg=8041.00, stdev=189.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=6.61%, ctx=59, 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=4211KiB/s (4312kB/s), 1053KiB/s-4526KiB/s (1078kB/s-4635kB/s), io=16.0MiB (16.8MB), run=2715-3891msec WRITE: bw=8421KiB/s (8624kB/s), 2105KiB/s-6444KiB/s (2156kB/s-6598kB/s), io=32.0MiB (33.6MB), run=1907-3891msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144834: Thu Sep 17 05:57:38 2026 read: IOPS=1, BW=4158KiB/s (4258kB/s)(12.0MiB/2955msec) clat (msec): min=443, max=1385, avg=984.71, stdev=486.80 lat (msec): min=443, max=1385, avg=984.71, stdev=486.80 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8062, max= 8094, per=100.00%, avg=8078.00, stdev=22.63, 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=3.52%, ctx=53, 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=144835: Thu Sep 17 05:57:38 2026 read: IOPS=0, BW=1183KiB/s (1212kB/s)(4096KiB/3462msec) clat (nsec): min=670964k, max=670964k, avg=670964350.00, stdev= 0.00 lat (nsec): min=670967k, max=670967k, avg=670966901.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 5505, max= 5505, per=100.00%, avg=5505.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2366KiB/s (2423kB/s)(8192KiB/3462msec); 0 zone resets clat (msec): min=1152, max=1624, avg=1388.42, stdev=333.24 lat (msec): min=1153, max=1624, avg=1388.91, stdev=333.03 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 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= 8126, max= 8126, per=85.85%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.20%, ctx=62, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144836: Thu Sep 17 05:57:38 2026 write: IOPS=0, BW=3651KiB/s (3738kB/s)(12.0MiB/3366msec); 0 zone resets clat (msec): min=444, max=1530, avg=1093.87, stdev=573.55 lat (msec): min=444, max=1532, avg=1094.52, stdev=573.75 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7953, max= 8175, per=85.20%, avg=8064.00, stdev=156.98, 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=3.51%, ctx=56, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144837: Thu Sep 17 05:57:38 2026 write: IOPS=1, BW=5218KiB/s (5343kB/s)(12.0MiB/2355msec); 0 zone resets clat (msec): min=448, max=1352, avg=783.78, stdev=495.07 lat (msec): min=449, max=1354, avg=784.71, stdev=495.99 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 5657, max= 8126, per=72.81%, avg=6891.50, stdev=1745.85, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.93%, ctx=45, 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=4733KiB/s (4846kB/s), 1183KiB/s-4158KiB/s (1212kB/s-4258kB/s), io=16.0MiB (16.8MB), run=2955-3462msec WRITE: bw=9465KiB/s (9692kB/s), 2366KiB/s-5218KiB/s (2423kB/s-5343kB/s), io=32.0MiB (33.6MB), run=2355-3462msec