== sanity test 398b: DIO and buffer IO race ============== 10:33:38 (1785940418) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.5965 s, 5.9 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=143747: Wed Aug 5 10:36:52 2026 read: IOPS=8, BW=35.3KiB/s (36.1kB/s)(5992KiB/169920msec) clat (usec): min=30, max=1230.9k, avg=53907.29, stdev=52971.61 lat (usec): min=30, max=1230.9k, avg=53910.64, stdev=52970.69 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 53], 10.00th=[ 64], | 20.00th=[ 21890], 30.00th=[ 29230], 40.00th=[ 36439], | 50.00th=[ 43779], 60.00th=[ 52167], 70.00th=[ 64750], | 80.00th=[ 83362], 90.00th=[ 107480], 95.00th=[ 132645], | 99.00th=[ 193987], 99.50th=[ 217056], 99.90th=[ 442500], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 7, max= 100, per=25.20%, avg=35.53, stdev=18.78, samples=325 iops : min= 1, max= 25, avg= 8.25, stdev= 4.74, samples=325 write: IOPS=9, BW=37.1KiB/s (37.9kB/s)(6296KiB/169920msec); 0 zone resets clat (usec): min=860, max=464436, avg=56353.30, stdev=61330.20 lat (usec): min=862, max=464437, avg=56354.80, stdev=61330.27 clat percentiles (usec): | 1.00th=[ 963], 5.00th=[ 1074], 10.00th=[ 1156], 20.00th=[ 4424], | 30.00th=[ 10290], 40.00th=[ 24511], 50.00th=[ 38536], 60.00th=[ 55837], | 70.00th=[ 72877], 80.00th=[ 98042], 90.00th=[139461], 95.00th=[175113], | 99.00th=[252707], 99.50th=[333448], 99.90th=[417334], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 7, max= 157, per=25.13%, avg=36.95, stdev=19.19, samples=329 iops : min= 1, max= 39, avg= 8.61, stdev= 4.83, samples=329 lat (usec) : 50=1.69%, 100=3.94%, 250=0.26%, 500=0.07%, 1000=1.11% lat (msec) : 2=6.87%, 4=1.92%, 10=5.66%, 20=6.64%, 50=29.00% lat (msec) : 100=26.86%, 250=15.17%, 500=0.78%, 2000=0.03% cpu : usr=0.05%, sys=4.03%, ctx=6120, 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=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=143748: Wed Aug 5 10:36:52 2026 read: IOPS=8, BW=35.2KiB/s (36.1kB/s)(5940KiB/168686msec) clat (usec): min=31, max=385880, avg=52850.12, stdev=43427.89 lat (usec): min=31, max=385881, avg=52852.44, stdev=43428.12 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 69], 20.00th=[ 21103], | 30.00th=[ 28181], 40.00th=[ 35914], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 63701], 80.00th=[ 80217], 90.00th=[107480], 95.00th=[130548], | 99.00th=[187696], 99.50th=[265290], 99.90th=[367002], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 110, per=25.03%, avg=35.29, stdev=17.82, samples=326 iops : min= 1, max= 27, avg= 8.18, stdev= 4.48, samples=326 write: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6348KiB/168686msec); 0 zone resets clat (usec): min=825, max=1213.5k, avg=56565.25, stdev=67827.14 lat (usec): min=826, max=1213.5k, avg=56571.21, stdev=67825.24 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 1045], 10.00th=[ 1123], | 20.00th=[ 3818], 30.00th=[ 9503], 40.00th=[ 23200], | 50.00th=[ 41157], 60.00th=[ 55313], 70.00th=[ 72877], | 80.00th=[ 96994], 90.00th=[ 137364], 95.00th=[ 175113], | 99.00th=[ 258999], 99.50th=[ 316670], 99.90th=[ 549454], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 118, per=25.42%, avg=37.37, stdev=18.66, samples=329 iops : min= 1, max= 29, avg= 8.71, stdev= 4.69, samples=329 lat (usec) : 50=1.53%, 100=3.65%, 250=0.13%, 500=0.07%, 750=0.07% lat (usec) : 1000=1.40% lat (msec) : 2=6.93%, 4=2.38%, 10=5.50%, 20=7.10%, 50=28.16% lat (msec) : 100=27.28%, 250=15.01%, 500=0.75%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=3.90%, ctx=5962, 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=143749: Wed Aug 5 10:36:52 2026 read: IOPS=8, BW=35.0KiB/s (36.8kB/s)(6028KiB/167674msec) clat (usec): min=31, max=1216.5k, avg=53659.60, stdev=58995.85 lat (usec): min=32, max=1216.5k, avg=53660.80, stdev=58995.82 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 52], 10.00th=[ 71], | 20.00th=[ 21890], 30.00th=[ 29230], 40.00th=[ 36963], | 50.00th=[ 43254], 60.00th=[ 52167], 70.00th=[ 62653], | 80.00th=[ 79168], 90.00th=[ 105382], 95.00th=[ 130548], | 99.00th=[ 185598], 99.50th=[ 287310], 99.90th=[ 960496], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 93, per=25.66%, avg=36.18, stdev=18.57, samples=323 iops : min= 1, max= 23, avg= 8.41, stdev= 4.66, samples=323 write: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6260KiB/167674msec); 0 zone resets clat (usec): min=846, max=679256, avg=55211.22, stdev=58764.30 lat (usec): min=848, max=679257, avg=55214.21, stdev=58764.40 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 1057], 10.00th=[ 1156], 20.00th=[ 4228], | 30.00th=[ 9765], 40.00th=[ 23462], 50.00th=[ 39584], 60.00th=[ 54789], | 70.00th=[ 73925], 80.00th=[ 98042], 90.00th=[137364], 95.00th=[164627], | 99.00th=[231736], 99.50th=[250610], 99.90th=[438305], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 101, per=25.38%, avg=37.30, stdev=17.82, samples=325 iops : min= 1, max= 25, avg= 8.71, stdev= 4.49, samples=325 lat (usec) : 50=1.63%, 100=3.78%, 250=0.23%, 500=0.03%, 750=0.03% lat (usec) : 1000=1.01% lat (msec) : 2=7.00%, 4=2.15%, 10=5.70%, 20=6.64%, 50=29.26% lat (msec) : 100=26.89%, 250=15.07%, 500=0.42%, 750=0.10%, 1000=0.03% lat (msec) : 2000=0.03% cpu : usr=0.06%, sys=3.90%, ctx=5842, 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=143750: Wed Aug 5 10:36:52 2026 read: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6052KiB/166999msec) clat (usec): min=27, max=318765, avg=52058.78, stdev=41217.61 lat (usec): min=27, max=318766, avg=52061.25, stdev=41217.93 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 52], 10.00th=[ 65], 20.00th=[ 21627], | 30.00th=[ 29492], 40.00th=[ 36439], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 62653], 80.00th=[ 79168], 90.00th=[105382], 95.00th=[135267], | 99.00th=[181404], 99.50th=[225444], 99.90th=[250610], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 95, per=25.89%, avg=36.51, stdev=18.54, samples=320 iops : min= 1, max= 23, avg= 8.49, stdev= 4.68, samples=320 write: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6236KiB/166999msec); 0 zone resets clat (usec): min=803, max=1175.5k, avg=56326.51, stdev=67699.63 lat (usec): min=805, max=1175.5k, avg=56329.85, stdev=67698.15 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 1057], 10.00th=[ 1139], | 20.00th=[ 3785], 30.00th=[ 8717], 40.00th=[ 23200], | 50.00th=[ 39060], 60.00th=[ 54789], 70.00th=[ 72877], | 80.00th=[ 95945], 90.00th=[ 135267], 95.00th=[ 175113], | 99.00th=[ 287310], 99.50th=[ 320865], 99.90th=[ 517997], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 7, max= 103, per=25.39%, avg=37.33, stdev=18.24, samples=322 iops : min= 1, max= 25, avg= 8.70, stdev= 4.58, samples=322 lat (usec) : 50=1.76%, 100=3.87%, 250=0.13%, 750=0.07%, 1000=0.98% lat (msec) : 2=7.00%, 4=2.51%, 10=5.76%, 20=6.32%, 50=29.17% lat (msec) : 100=27.60%, 250=14.13%, 500=0.65%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=3.91%, ctx=6022, 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=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=141KiB/s (145kB/s), 35.2KiB/s-36.2KiB/s (36.1kB/s-37.1kB/s), io=23.4MiB (24.6MB), run=166999-169920msec WRITE: bw=148KiB/s (152kB/s), 37.1KiB/s-37.6KiB/s (37.9kB/s-38.5kB/s), io=24.6MiB (25.7MB), run=166999-169920msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143752: Wed Aug 5 10:39:47 2026 read: IOPS=4, BW=17.5KiB/s (17.9kB/s)(5992KiB/343173msec) clat (msec): min=5, max=1417, avg=42.84, stdev=64.04 lat (msec): min=5, max=1417, avg=42.84, stdev=64.04 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 58], 90.00th=[ 99], 95.00th=[ 138], | 99.00th=[ 259], 99.50th=[ 338], 99.90th=[ 726], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7, max= 86, per=30.89%, avg=21.31, stdev=15.01, samples=540 iops : min= 1, max= 21, avg= 4.69, stdev= 3.78, samples=540 write: IOPS=4, BW=18.3KiB/s (18.8kB/s)(6296KiB/343173msec); 0 zone resets clat (msec): min=26, max=1065, avg=177.19, stdev=97.24 lat (msec): min=26, max=1065, avg=177.19, stdev=97.24 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 70], 10.00th=[ 84], 20.00th=[ 101], | 30.00th=[ 117], 40.00th=[ 136], 50.00th=[ 157], 60.00th=[ 176], | 70.00th=[ 203], 80.00th=[ 241], 90.00th=[ 300], 95.00th=[ 355], | 99.00th=[ 506], 99.50th=[ 625], 99.90th=[ 760], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 56, per=25.33%, avg=18.49, stdev= 9.53, samples=649 iops : min= 1, max= 14, avg= 3.98, stdev= 2.46, samples=649 lat (msec) : 10=2.96%, 20=16.21%, 50=18.88%, 100=16.47%, 250=35.51% lat (msec) : 500=9.31%, 750=0.52%, 1000=0.07%, 2000=0.07% cpu : usr=0.02%, sys=0.76%, ctx=4949, 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=143753: Wed Aug 5 10:39:47 2026 read: IOPS=4, BW=17.3KiB/s (17.7kB/s)(5940KiB/344002msec) clat (msec): min=4, max=1316, avg=41.93, stdev=61.30 lat (msec): min=4, max=1316, avg=41.94, stdev=61.30 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 99], 95.00th=[ 138], | 99.00th=[ 266], 99.50th=[ 321], 99.90th=[ 684], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 88, per=31.23%, avg=21.55, stdev=15.73, samples=529 iops : min= 1, max= 22, avg= 4.75, stdev= 3.98, samples=529 write: IOPS=4, BW=18.5KiB/s (18.9kB/s)(6348KiB/344002msec); 0 zone resets clat (msec): min=35, max=1067, avg=177.46, stdev=96.84 lat (msec): min=35, max=1067, avg=177.47, stdev=96.83 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 101], | 30.00th=[ 117], 40.00th=[ 134], 50.00th=[ 157], 60.00th=[ 182], | 70.00th=[ 203], 80.00th=[ 241], 90.00th=[ 300], 95.00th=[ 359], | 99.00th=[ 527], 99.50th=[ 567], 99.90th=[ 701], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 55, per=25.36%, avg=18.51, stdev= 9.76, samples=654 iops : min= 1, max= 13, avg= 3.98, stdev= 2.50, samples=654 lat (msec) : 10=3.52%, 20=16.18%, 50=18.88%, 100=15.56%, 250=36.26% lat (msec) : 500=8.95%, 750=0.59%, 2000=0.07% cpu : usr=0.03%, sys=0.77%, ctx=4934, 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=143754: Wed Aug 5 10:39:47 2026 read: IOPS=4, BW=17.7KiB/s (18.1kB/s)(6028KiB/340774msec) clat (msec): min=4, max=868, avg=43.16, stdev=52.35 lat (msec): min=4, max=868, avg=43.16, stdev=52.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 41], 80.00th=[ 63], 90.00th=[ 103], 95.00th=[ 138], | 99.00th=[ 253], 99.50th=[ 275], 99.90th=[ 430], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 110, per=30.17%, avg=20.82, stdev=15.33, samples=555 iops : min= 1, max= 27, avg= 4.56, stdev= 3.88, samples=555 write: IOPS=4, BW=18.4KiB/s (18.8kB/s)(6260KiB/340774msec); 0 zone resets clat (msec): min=34, max=1590, avg=176.10, stdev=98.07 lat (msec): min=34, max=1590, avg=176.10, stdev=98.07 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 99], | 30.00th=[ 118], 40.00th=[ 138], 50.00th=[ 157], 60.00th=[ 178], | 70.00th=[ 205], 80.00th=[ 239], 90.00th=[ 300], 95.00th=[ 355], | 99.00th=[ 477], 99.50th=[ 542], 99.90th=[ 701], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 64, per=25.36%, avg=18.52, stdev= 9.72, samples=645 iops : min= 1, max= 16, avg= 3.98, stdev= 2.50, samples=645 lat (msec) : 10=3.81%, 20=15.72%, 50=18.29%, 100=16.83%, 250=35.94% lat (msec) : 500=8.95%, 750=0.39%, 1000=0.03%, 2000=0.03% cpu : usr=0.02%, sys=0.76%, ctx=4832, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143755: Wed Aug 5 10:39:47 2026 read: IOPS=4, BW=17.8KiB/s (18.2kB/s)(6052KiB/340211msec) clat (msec): min=4, max=816, avg=42.32, stdev=53.01 lat (msec): min=4, max=816, avg=42.32, stdev=53.01 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 102], 95.00th=[ 138], | 99.00th=[ 245], 99.50th=[ 288], 99.90th=[ 718], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 95, per=32.08%, avg=22.14, stdev=15.19, samples=526 iops : min= 1, max= 23, avg= 4.89, stdev= 3.85, samples=526 write: IOPS=4, BW=18.3KiB/s (18.8kB/s)(6236KiB/340211msec); 0 zone resets clat (msec): min=28, max=1435, avg=177.10, stdev=98.76 lat (msec): min=28, max=1435, avg=177.10, stdev=98.76 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 102], | 30.00th=[ 117], 40.00th=[ 138], 50.00th=[ 157], 60.00th=[ 180], | 70.00th=[ 203], 80.00th=[ 236], 90.00th=[ 300], 95.00th=[ 355], | 99.00th=[ 514], 99.50th=[ 592], 99.90th=[ 625], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 55, per=25.01%, avg=18.25, stdev= 9.53, samples=651 iops : min= 1, max= 13, avg= 3.91, stdev= 2.44, samples=651 lat (msec) : 10=3.97%, 20=15.49%, 50=19.24%, 100=15.49%, 250=36.69% lat (msec) : 500=8.46%, 750=0.59%, 1000=0.03%, 2000=0.03% cpu : usr=0.03%, sys=0.83%, ctx=4972, 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=69.8KiB/s (71.5kB/s), 17.3KiB/s-17.8KiB/s (17.7kB/s-18.2kB/s), io=23.4MiB (24.6MB), run=340211-344002msec WRITE: bw=73.1KiB/s (74.8kB/s), 18.3KiB/s-18.5KiB/s (18.8kB/s-18.9kB/s), io=24.6MiB (25.7MB), run=340211-344002msec 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=143823: Wed Aug 5 10:40:40 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(5920KiB/42266msec) clat (usec): min=30, max=325356, avg=53689.95, stdev=54481.92 lat (usec): min=31, max=325357, avg=53690.97, stdev=54481.94 clat percentiles (usec): | 1.00th=[ 37], 5.00th=[ 51], 10.00th=[ 56], 20.00th=[ 70], | 30.00th=[ 17695], 40.00th=[ 33817], 50.00th=[ 44303], 60.00th=[ 54264], | 70.00th=[ 67634], 80.00th=[ 92799], 90.00th=[121111], 95.00th=[147850], | 99.00th=[274727], 99.50th=[291505], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 30, max= 381, per=25.29%, avg=143.13, stdev=71.12, samples=79 iops : min= 1, max= 23, avg= 8.16, stdev= 4.46, samples=79 write: IOPS=9, BW=151KiB/s (154kB/s)(6368KiB/42266msec); 0 zone resets clat (usec): min=1243, max=450037, avg=55617.27, stdev=63477.09 lat (usec): min=1244, max=450038, avg=55618.92, stdev=63477.16 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1663], 10.00th=[ 3490], 20.00th=[ 8717], | 30.00th=[ 14615], 40.00th=[ 22938], 50.00th=[ 32637], 60.00th=[ 44827], | 70.00th=[ 63177], 80.00th=[ 99091], 90.00th=[139461], 95.00th=[173016], | 99.00th=[287310], 99.50th=[346031], 99.90th=[450888], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 30, max= 413, per=26.07%, avg=155.35, stdev=85.02, samples=79 iops : min= 1, max= 25, avg= 8.95, stdev= 5.31, samples=79 lat (usec) : 50=2.34%, 100=8.98%, 250=1.17%, 500=0.13%, 750=0.26% lat (msec) : 2=4.69%, 4=1.17%, 10=6.77%, 20=8.72%, 50=25.91% lat (msec) : 100=21.09%, 250=16.93%, 500=1.82% cpu : usr=0.06%, sys=4.49%, ctx=1388, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143824: Wed Aug 5 10:40:40 2026 read: IOPS=8, BW=139KiB/s (143kB/s)(5744KiB/41238msec) clat (usec): min=31, max=239194, avg=55644.81, stdev=49592.37 lat (usec): min=32, max=239195, avg=55645.85, stdev=49592.35 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 52], 10.00th=[ 57], 20.00th=[ 76], | 30.00th=[ 26608], 40.00th=[ 38536], 50.00th=[ 46400], 60.00th=[ 58459], | 70.00th=[ 74974], 80.00th=[ 93848], 90.00th=[123208], 95.00th=[152044], | 99.00th=[206570], 99.50th=[219153], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 351, per=26.25%, avg=148.57, stdev=75.90, samples=75 iops : min= 1, max= 21, avg= 8.51, stdev= 4.75, samples=75 write: IOPS=9, BW=159KiB/s (162kB/s)(6544KiB/41238msec); 0 zone resets clat (usec): min=1298, max=533154, avg=51423.81, stdev=67202.68 lat (usec): min=1299, max=533156, avg=51425.89, stdev=67203.13 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1614], 10.00th=[ 1811], 20.00th=[ 5997], | 30.00th=[ 9896], 40.00th=[ 17695], 50.00th=[ 27657], 60.00th=[ 41157], | 70.00th=[ 61080], 80.00th=[ 88605], 90.00th=[123208], 95.00th=[177210], | 99.00th=[333448], 99.50th=[408945], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 29, max= 446, per=26.75%, avg=159.41, stdev=90.88, samples=80 iops : min= 1, max= 27, avg= 9.20, stdev= 5.71, samples=80 lat (usec) : 50=1.82%, 100=8.59%, 250=0.26%, 1000=0.13% lat (msec) : 2=5.86%, 4=1.69%, 10=9.11%, 20=7.94%, 50=24.48% lat (msec) : 100=23.31%, 250=15.63%, 500=1.04%, 750=0.13% cpu : usr=0.03%, sys=4.39%, ctx=1339, 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=143825: Wed Aug 5 10:40:40 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(6256KiB/38765msec) clat (usec): min=31, max=273229, avg=51711.85, stdev=46181.62 lat (usec): min=32, max=273230, avg=51712.88, stdev=46181.66 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 117], | 30.00th=[ 23987], 40.00th=[ 35914], 50.00th=[ 45351], 60.00th=[ 56361], | 70.00th=[ 69731], 80.00th=[ 82314], 90.00th=[104334], 95.00th=[135267], | 99.00th=[219153], 99.50th=[244319], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 29, max= 343, per=29.62%, avg=167.67, stdev=73.78, samples=73 iops : min= 1, max= 21, avg= 9.73, stdev= 4.69, samples=73 write: IOPS=9, BW=156KiB/s (159kB/s)(6032KiB/38765msec); 0 zone resets clat (usec): min=1279, max=713411, avg=48688.61, stdev=75013.83 lat (usec): min=1280, max=713413, avg=48690.38, stdev=75013.83 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1565], 10.00th=[ 2089], 20.00th=[ 5997], | 30.00th=[ 10159], 40.00th=[ 14222], 50.00th=[ 20841], 60.00th=[ 30016], | 70.00th=[ 49021], 80.00th=[ 65799], 90.00th=[119014], 95.00th=[196084], | 99.00th=[329253], 99.50th=[367002], 99.90th=[717226], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 31, max= 412, per=26.47%, avg=157.77, stdev=85.38, samples=74 iops : min= 1, max= 25, avg= 9.12, stdev= 5.36, samples=74 lat (usec) : 50=1.82%, 100=8.33%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=5.08%, 4=2.60%, 10=8.07%, 20=11.20%, 50=25.91% lat (msec) : 100=23.44%, 250=10.94%, 500=1.82%, 750=0.13% cpu : usr=0.05%, sys=4.41%, ctx=1352, 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=143826: Wed Aug 5 10:40:40 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(6032KiB/40140msec) clat (usec): min=32, max=471326, avg=53814.25, stdev=57634.68 lat (usec): min=32, max=471327, avg=53821.54, stdev=57636.61 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 49], 10.00th=[ 57], 20.00th=[ 65], | 30.00th=[ 19268], 40.00th=[ 30802], 50.00th=[ 42206], 60.00th=[ 54789], | 70.00th=[ 69731], 80.00th=[ 85459], 90.00th=[128451], 95.00th=[170918], | 99.00th=[252707], 99.50th=[375391], 99.90th=[471860], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 29, max= 410, per=27.28%, avg=154.42, stdev=81.27, samples=76 iops : min= 1, max= 25, avg= 8.89, stdev= 5.14, samples=76 write: IOPS=9, BW=156KiB/s (160kB/s)(6256KiB/40140msec); 0 zone resets clat (usec): min=1314, max=438248, avg=50503.69, stdev=63002.32 lat (usec): min=1316, max=438249, avg=50505.49, stdev=63002.33 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1565], 10.00th=[ 1811], 20.00th=[ 5735], | 30.00th=[ 9896], 40.00th=[ 15664], 50.00th=[ 24773], 60.00th=[ 39060], | 70.00th=[ 55313], 80.00th=[ 87557], 90.00th=[130548], 95.00th=[179307], | 99.00th=[283116], 99.50th=[371196], 99.90th=[438305], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 29, max= 412, per=27.04%, avg=161.14, stdev=85.58, samples=76 iops : min= 1, max= 25, avg= 9.32, stdev= 5.41, samples=76 lat (usec) : 50=2.60%, 100=9.77%, 250=0.26%, 500=0.13% lat (msec) : 2=5.86%, 4=1.69%, 10=8.46%, 20=8.85%, 50=23.70% lat (msec) : 100=22.66%, 250=14.71%, 500=1.30% cpu : usr=0.08%, sys=4.42%, ctx=1355, 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=567KiB/s (580kB/s), 139KiB/s-161KiB/s (143kB/s-165kB/s), io=23.4MiB (24.5MB), run=38765-42266msec WRITE: bw=596KiB/s (611kB/s), 151KiB/s-159KiB/s (154kB/s-162kB/s), io=24.6MiB (25.8MB), run=38765-42266msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143827: Wed Aug 5 10:41:29 2026 read: IOPS=4, BW=65.3KiB/s (66.8kB/s)(5920KiB/90709msec) clat (msec): min=4, max=619, avg=49.47, stdev=57.36 lat (msec): min=4, max=619, avg=49.48, stdev=57.36 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 105], 95.00th=[ 157], | 99.00th=[ 262], 99.50th=[ 388], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 26, max= 224, per=31.15%, avg=81.62, stdev=48.79, samples=141 iops : min= 1, max= 14, avg= 4.39, stdev= 3.14, samples=141 write: IOPS=4, BW=70.2KiB/s (71.9kB/s)(6368KiB/90709msec); 0 zone resets clat (msec): min=46, max=725, avg=181.36, stdev=114.78 lat (msec): min=46, max=726, avg=181.37, stdev=114.78 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 83], 20.00th=[ 97], | 30.00th=[ 111], 40.00th=[ 130], 50.00th=[ 150], 60.00th=[ 171], | 70.00th=[ 197], 80.00th=[ 245], 90.00th=[ 321], 95.00th=[ 426], | 99.00th=[ 625], 99.50th=[ 659], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 26, max= 191, per=26.84%, avg=74.08, stdev=39.18, samples=168 iops : min= 1, max= 11, avg= 3.90, stdev= 2.59, samples=168 lat (msec) : 10=1.69%, 20=11.20%, 50=21.61%, 100=19.53%, 250=35.68% lat (msec) : 500=8.46%, 750=1.82% cpu : usr=0.02%, sys=0.84%, ctx=1245, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143828: Wed Aug 5 10:41:29 2026 read: IOPS=3, BW=63.0KiB/s (64.5kB/s)(5744KiB/91142msec) clat (msec): min=5, max=446, avg=54.13, stdev=70.14 lat (msec): min=5, max=446, avg=54.13, stdev=70.14 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 65], 90.00th=[ 130], 95.00th=[ 215], | 99.00th=[ 376], 99.50th=[ 443], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 29, max= 287, per=32.15%, avg=84.24, stdev=56.46, samples=133 iops : min= 1, max= 17, avg= 4.56, stdev= 3.59, samples=133 write: IOPS=4, BW=71.8KiB/s (73.5kB/s)(6544KiB/91142msec); 0 zone resets clat (msec): min=47, max=840, avg=175.03, stdev=112.20 lat (msec): min=47, max=840, avg=175.04, stdev=112.20 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 73], 10.00th=[ 83], 20.00th=[ 99], | 30.00th=[ 113], 40.00th=[ 131], 50.00th=[ 146], 60.00th=[ 161], | 70.00th=[ 182], 80.00th=[ 222], 90.00th=[ 317], 95.00th=[ 384], | 99.00th=[ 659], 99.50th=[ 676], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 26, max= 160, per=28.10%, avg=77.56, stdev=37.74, samples=165 iops : min= 1, max= 10, avg= 4.13, stdev= 2.50, samples=165 lat (msec) : 10=1.95%, 20=10.55%, 50=23.44%, 100=14.97%, 250=39.71% lat (msec) : 500=8.20%, 750=0.91%, 1000=0.26% cpu : usr=0.03%, sys=0.91%, ctx=1238, 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=143829: Wed Aug 5 10:41:29 2026 read: IOPS=4, BW=72.1KiB/s (73.8kB/s)(6256KiB/86808msec) clat (msec): min=7, max=379, avg=51.70, stdev=56.78 lat (msec): min=7, max=379, avg=51.70, stdev=56.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 71], 90.00th=[ 115], 95.00th=[ 169], | 99.00th=[ 288], 99.50th=[ 317], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 29, max= 314, per=33.05%, avg=86.59, stdev=58.33, samples=142 iops : min= 1, max= 19, avg= 4.71, stdev= 3.68, samples=142 write: IOPS=4, BW=69.5KiB/s (71.2kB/s)(6032KiB/86808msec); 0 zone resets clat (msec): min=33, max=850, avg=175.98, stdev=110.37 lat (msec): min=33, max=850, avg=175.99, stdev=110.37 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 82], 20.00th=[ 97], | 30.00th=[ 113], 40.00th=[ 131], 50.00th=[ 144], 60.00th=[ 165], | 70.00th=[ 188], 80.00th=[ 236], 90.00th=[ 305], 95.00th=[ 405], | 99.00th=[ 609], 99.50th=[ 634], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 26, max= 192, per=26.36%, avg=72.76, stdev=38.10, samples=161 iops : min= 1, max= 12, avg= 3.81, stdev= 2.52, samples=161 lat (msec) : 10=1.04%, 20=11.72%, 50=24.35%, 100=17.97%, 250=35.68% lat (msec) : 500=7.94%, 750=1.17%, 1000=0.13% cpu : usr=0.03%, sys=0.96%, ctx=1308, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143830: Wed Aug 5 10:41:29 2026 read: IOPS=4, BW=67.9KiB/s (69.5kB/s)(6032KiB/88848msec) clat (msec): min=7, max=464, avg=52.61, stdev=61.12 lat (msec): min=7, max=464, avg=52.62, stdev=61.12 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 77], 90.00th=[ 133], 95.00th=[ 186], | 99.00th=[ 334], 99.50th=[ 351], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 29, max= 320, per=33.58%, avg=87.98, stdev=59.34, samples=135 iops : min= 1, max= 20, avg= 4.79, stdev= 3.79, samples=135 write: IOPS=4, BW=70.4KiB/s (72.1kB/s)(6256KiB/88848msec); 0 zone resets clat (msec): min=37, max=870, avg=175.84, stdev=117.12 lat (msec): min=37, max=870, avg=175.85, stdev=117.12 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 73], 10.00th=[ 84], 20.00th=[ 99], | 30.00th=[ 112], 40.00th=[ 126], 50.00th=[ 142], 60.00th=[ 157], | 70.00th=[ 184], 80.00th=[ 228], 90.00th=[ 309], 95.00th=[ 409], | 99.00th=[ 676], 99.50th=[ 768], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 26, max= 190, per=27.06%, avg=74.68, stdev=39.34, samples=165 iops : min= 1, max= 11, avg= 3.94, stdev= 2.64, samples=165 lat (msec) : 10=1.30%, 20=13.93%, 50=20.31%, 100=17.58%, 250=37.50% lat (msec) : 500=8.07%, 750=1.04%, 1000=0.26% cpu : usr=0.03%, sys=0.87%, ctx=1256, 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=263KiB/s (269kB/s), 63.0KiB/s-72.1KiB/s (64.5kB/s-73.8kB/s), io=23.4MiB (24.5MB), run=86808-91142msec WRITE: bw=276KiB/s (283kB/s), 69.5KiB/s-71.8KiB/s (71.2kB/s-73.5kB/s), io=24.6MiB (25.8MB), run=86808-91142msec 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=143861: Wed Aug 5 10:41:49 2026 read: IOPS=1, BW=1573KiB/s (1610kB/s)(7168KiB/4558msec) clat (usec): min=470, max=427098, avg=285689.10, stdev=144169.37 lat (usec): min=471, max=427099, avg=285690.45, stdev=144169.48 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], 20.00th=[235930], | 30.00th=[274727], 40.00th=[274727], 50.00th=[320865], 60.00th=[320865], | 70.00th=[320865], 80.00th=[421528], 90.00th=[425722], 95.00th=[425722], | 99.00th=[425722], 99.50th=[425722], 99.90th=[425722], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 1892, max= 2771, per=77.04%, avg=2140.20, stdev=356.65, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1123KiB/s (1150kB/s)(5120KiB/4558msec); 0 zone resets clat (msec): min=220, max=994, avg=493.73, stdev=309.53 lat (msec): min=220, max=994, avg=493.79, stdev=309.51 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 518], 80.00th=[ 518], 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= 2003, max= 3785, per=63.29%, avg=2461.50, stdev=882.49, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=16.67%, 500=58.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=6.32%, ctx=206, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143863: Wed Aug 5 10:41:49 2026 read: IOPS=0, BW=278KiB/s (285kB/s)(2048KiB/7371msec) clat (msec): min=7, max=633, avg=320.66, stdev=442.44 lat (msec): min=7, max=633, avg=320.66, stdev=442.44 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 8], | 30.00th=[ 8], 40.00th=[ 8], 50.00th=[ 8], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1996, max= 2035, per=72.55%, avg=2015.50, stdev=27.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1389KiB/s (1423kB/s)(10.0MiB/7371msec); 0 zone resets clat (msec): min=326, max=1765, avg=648.02, stdev=425.90 lat (msec): min=326, max=1765, avg=648.08, stdev=425.90 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 368], | 30.00th=[ 388], 40.00th=[ 405], 50.00th=[ 439], 60.00th=[ 609], | 70.00th=[ 659], 80.00th=[ 735], 90.00th=[ 793], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 1825, max= 3871, per=58.11%, avg=2259.86, stdev=714.45, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 10=8.33%, 500=41.67%, 750=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.03%, sys=7.29%, ctx=151, 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=143865: Wed Aug 5 10:41:49 2026 read: IOPS=0, BW=849KiB/s (870kB/s)(6144KiB/7234msec) clat (msec): min=235, max=656, avg=447.38, stdev=154.33 lat (msec): min=235, max=656, avg=447.38, stdev=154.33 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 443], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1790, max= 3976, per=86.33%, avg=2398.25, stdev=1053.59, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=849KiB/s (870kB/s)(6144KiB/7234msec); 0 zone resets clat (msec): min=392, max=1308, avg=714.93, stdev=345.39 lat (msec): min=393, max=1308, avg=715.26, stdev=345.10 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 776], | 70.00th=[ 860], 80.00th=[ 860], 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= 1436, max= 2035, per=48.52%, avg=1887.00, stdev=234.13, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=8.33%, 500=41.67%, 750=25.00%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=5.60%, ctx=192, 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=143866: Wed Aug 5 10:41:49 2026 read: IOPS=1, BW=1037KiB/s (1062kB/s)(5120KiB/4937msec) clat (msec): min=2, max=538, avg=266.15, stdev=252.29 lat (msec): min=2, max=538, avg=266.15, stdev=252.29 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 6], 40.00th=[ 6], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2043, max= 5657, per=100.00%, avg=3850.00, stdev=2555.48, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1452KiB/s (1487kB/s)(7168KiB/4937msec); 0 zone resets clat (msec): min=281, max=877, avg=502.21, stdev=213.29 lat (msec): min=281, max=877, avg=502.28, stdev=213.29 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 292], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 485], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 634], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1774, max= 2043, per=50.23%, avg=1953.29, stdev=121.20, samples=7 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=7 lat (msec) : 4=8.33%, 10=8.33%, 500=50.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=5.73%, ctx=135, 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=2778KiB/s (2845kB/s), 278KiB/s-1573KiB/s (285kB/s-1610kB/s), io=20.0MiB (20.0MB), run=4558-7371msec WRITE: bw=3890KiB/s (3983kB/s), 849KiB/s-1452KiB/s (870kB/s-1487kB/s), io=28.0MiB (29.4MB), run=4558-7371msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143862: Wed Aug 5 10:41:49 2026 read: IOPS=1, BW=1132KiB/s (1159kB/s)(7168KiB/6334msec) clat (msec): min=139, max=874, avg=455.49, stdev=280.82 lat (msec): min=139, max=874, avg=455.49, stdev=280.82 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 243], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 363], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 793], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1865, max= 4063, per=84.61%, avg=2395.40, stdev=934.54, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=808KiB/s (828kB/s)(5120KiB/6334msec); 0 zone resets clat (msec): min=311, max=1194, avg=598.69, stdev=352.63 lat (msec): min=311, max=1194, avg=598.77, stdev=352.62 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 609], 80.00th=[ 609], 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= 1980, max= 2048, per=50.65%, avg=2007.60, stdev=24.87, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=16.67%, 500=41.67%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=1.97%, ctx=48, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143864: Wed Aug 5 10:41:49 2026 read: IOPS=0, BW=283KiB/s (290kB/s)(2048KiB/7232msec) clat (msec): min=179, max=197, avg=188.14, stdev=12.74 lat (msec): min=179, max=197, avg=188.15, stdev=12.74 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 199], 90.00th=[ 199], 95.00th=[ 199], | 99.00th=[ 199], 99.50th=[ 199], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 1892, max= 2031, per=69.29%, avg=1961.50, stdev=98.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1416KiB/s (1450kB/s)(10.0MiB/7232msec); 0 zone resets clat (msec): min=276, max=1396, avg=677.64, stdev=406.96 lat (msec): min=276, max=1396, avg=677.71, stdev=406.97 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 279], | 30.00th=[ 309], 40.00th=[ 330], 50.00th=[ 531], 60.00th=[ 667], | 70.00th=[ 877], 80.00th=[ 894], 90.00th=[ 1217], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1692, max= 4055, per=55.16%, avg=2186.37, stdev=763.22, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=16.67%, 500=33.33%, 750=16.67%, 1000=16.67%, 2000=16.67% cpu : usr=0.01%, sys=1.78%, ctx=66, 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=143867: Wed Aug 5 10:41:49 2026 read: IOPS=0, BW=904KiB/s (925kB/s)(6144KiB/6798msec) clat (msec): min=131, max=827, avg=461.26, stdev=287.03 lat (msec): min=131, max=827, avg=461.26, stdev=287.03 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 456], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 2048, max= 4000, per=100.00%, avg=3336.33, stdev=1115.90, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=0, BW=904KiB/s (925kB/s)(6144KiB/6798msec); 0 zone resets clat (msec): min=312, max=1031, avg=663.45, stdev=296.65 lat (msec): min=313, max=1031, avg=663.54, stdev=296.67 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 743], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1718, max= 2031, per=48.62%, avg=1927.20, stdev=134.62, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=16.67%, 500=33.33%, 750=16.67%, 1000=25.00%, 2000=8.33% cpu : usr=0.03%, sys=1.91%, ctx=56, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143868: Wed Aug 5 10:41:49 2026 read: IOPS=0, BW=709KiB/s (726kB/s)(5120KiB/7221msec) clat (msec): min=135, max=542, avg=345.40, stdev=184.30 lat (msec): min=135, max=542, avg=345.40, stdev=184.30 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1988, max= 4071, per=94.97%, avg=2688.67, stdev=1197.17, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=993KiB/s (1016kB/s)(7168KiB/7221msec); 0 zone resets clat (msec): min=372, max=1373, avg=771.02, stdev=397.08 lat (msec): min=372, max=1373, avg=771.10, stdev=397.09 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 384], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 877], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 1099], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 1686, max= 4096, per=59.25%, avg=2348.60, stdev=987.75, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (msec) : 250=16.67%, 500=41.67%, 750=8.33%, 1000=16.67%, 2000=16.67% cpu : usr=0.00%, sys=1.72%, ctx=96, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2832KiB/s (2900kB/s), 283KiB/s-1132KiB/s (290kB/s-1159kB/s), io=20.0MiB (20.0MB), run=6334-7232msec WRITE: bw=3965KiB/s (4060kB/s), 808KiB/s-1416KiB/s (828kB/s-1450kB/s), io=28.0MiB (29.4MB), run=6334-7232msec 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=143877: Wed Aug 5 10:42:11 2026 read: IOPS=0, BW=3935KiB/s (4029kB/s)(12.0MiB/3123msec) clat (msec): min=788, max=1235, avg=975.93, stdev=231.80 lat (msec): min=788, max=1235, avg=975.93, stdev=231.80 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 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= 8031, max= 8192, per=100.00%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=9.13%, ctx=292, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143879: Wed Aug 5 10:42:11 2026 read: IOPS=0, BW=1111KiB/s (1138kB/s)(4096KiB/3686msec) clat (nsec): min=1251.0M, max=1251.0M, avg=1251958617.00, stdev= 0.00 lat (nsec): min=1251.0M, max=1251.0M, avg=1251960839.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1250], 5.00th=[ 1250], 10.00th=[ 1250], 20.00th=[ 1250], | 30.00th=[ 1250], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2222KiB/s (2276kB/s)(8192KiB/3686msec); 0 zone resets clat (msec): min=499, max=1758, avg=1128.97, stdev=889.93 lat (msec): min=500, max=1758, avg=1129.26, stdev=889.90 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 1754], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8031, max= 8031, per=90.35%, avg=8031.00, 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=3.80%, ctx=82, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143880: Wed Aug 5 10:42:11 2026 write: IOPS=0, BW=3346KiB/s (3427kB/s)(12.0MiB/3672msec); 0 zone resets clat (msec): min=408, max=1613, avg=1176.04, stdev=666.50 lat (msec): min=409, max=1613, avg=1176.32, stdev=666.49 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 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= 8031, max= 8031, per=90.35%, avg=8031.00, 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=3.57%, ctx=48, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143881: Wed Aug 5 10:42:11 2026 write: IOPS=1, BW=4230KiB/s (4331kB/s)(12.0MiB/2905msec); 0 zone resets clat (msec): min=513, max=1537, avg=917.79, stdev=545.26 lat (msec): min=514, max=1538, avg=918.54, stdev=544.75 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 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= 7787, max= 8192, per=89.88%, avg=7989.50, stdev=286.38, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.79%, ctx=44, 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=4445KiB/s (4552kB/s), 1111KiB/s-3935KiB/s (1138kB/s-4029kB/s), io=16.0MiB (16.8MB), run=3123-3686msec WRITE: bw=8890KiB/s (9103kB/s), 2222KiB/s-4230KiB/s (2276kB/s-4331kB/s), io=32.0MiB (33.6MB), run=2905-3686msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143883: Wed Aug 5 10:42:12 2026 read: IOPS=0, BW=3042KiB/s (3115kB/s)(12.0MiB/4040msec) clat (msec): min=430, max=1828, avg=1318.95, stdev=772.14 lat (msec): min=430, max=1828, avg=1318.95, stdev=772.14 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 1703], 50.00th=[ 1703], 60.00th=[ 1703], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.12%, sys=2.62%, ctx=60, 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=143884: Wed Aug 5 10:42:12 2026 read: IOPS=0, BW=1026KiB/s (1051kB/s)(4096KiB/3991msec) clat (nsec): min=1593.4M, max=1593.4M, avg=1593408818.00, stdev= 0.00 lat (nsec): min=1593.4M, max=1593.4M, avg=1593410233.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1586], 5.00th=[ 1586], 10.00th=[ 1586], 20.00th=[ 1586], | 30.00th=[ 1586], 40.00th=[ 1586], 50.00th=[ 1586], 60.00th=[ 1586], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] 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=2053KiB/s (2102kB/s)(8192KiB/3991msec); 0 zone resets clat (msec): min=911, max=1484, avg=1197.93, stdev=405.76 lat (msec): min=911, max=1485, avg=1198.17, stdev=405.66 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8078, max= 8078, per=98.39%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.11%, ctx=73, 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=143885: Wed Aug 5 10:42:12 2026 write: IOPS=0, BW=3317KiB/s (3396kB/s)(12.0MiB/3705msec); 0 zone resets clat (msec): min=337, max=2055, avg=1226.48, stdev=860.77 lat (msec): min=337, max=2055, avg=1226.89, stdev=860.60 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 8159, max= 8175, per=99.48%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.19%, ctx=34, 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=143886: Wed Aug 5 10:42:12 2026 write: IOPS=1, BW=4913KiB/s (5031kB/s)(12.0MiB/2501msec); 0 zone resets clat (msec): min=608, max=1099, avg=833.17, stdev=248.24 lat (msec): min=608, max=1100, avg=833.48, stdev=248.26 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8110, max= 8175, per=99.18%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.08%, ctx=62, 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=4055KiB/s (4153kB/s), 1026KiB/s-3042KiB/s (1051kB/s-3115kB/s), io=16.0MiB (16.8MB), run=3991-4040msec WRITE: bw=8210KiB/s (8408kB/s), 2053KiB/s-4913KiB/s (2102kB/s-5031kB/s), io=32.0MiB (33.6MB), run=2501-3991msec