== sanity test 398b: DIO and buffer IO race ============== 18:56:51 (1784415411) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.41764 s, 14.7 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=190139: Sat Jul 18 18:57:59 2026 read: IOPS=26, BW=105KiB/s (108kB/s)(5992KiB/57057msec) clat (usec): min=27, max=118454, avg=19876.21, stdev=11244.15 lat (usec): min=28, max=118455, avg=19880.63, stdev=11241.73 clat percentiles (usec): | 1.00th=[ 96], 5.00th=[ 7242], 10.00th=[ 8979], 20.00th=[ 11076], | 30.00th=[ 13042], 40.00th=[ 15139], 50.00th=[ 17433], 60.00th=[ 20579], | 70.00th=[ 23462], 80.00th=[ 27657], 90.00th=[ 34341], 95.00th=[ 41681], | 99.00th=[ 55313], 99.50th=[ 61604], 99.90th=[ 90702], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 20, max= 200, per=25.32%, avg=104.57, stdev=37.20, samples=113 iops : min= 5, max= 50, avg=25.75, stdev= 9.35, samples=113 write: IOPS=27, BW=110KiB/s (113kB/s)(6296KiB/57057msec); 0 zone resets clat (usec): min=680, max=706712, avg=17198.26, stdev=21679.88 lat (usec): min=680, max=706713, avg=17201.02, stdev=21679.80 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 2540], 10.00th=[ 3261], 20.00th=[ 5014], | 30.00th=[ 8356], 40.00th=[ 11207], 50.00th=[ 13960], 60.00th=[ 17171], | 70.00th=[ 20841], 80.00th=[ 26346], 90.00th=[ 34341], 95.00th=[ 41681], | 99.00th=[ 58459], 99.50th=[ 64226], 99.90th=[ 95945], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 31, max= 224, per=25.57%, avg=110.73, stdev=37.02, samples=112 iops : min= 7, max= 56, avg=27.29, stdev= 9.30, samples=112 lat (usec) : 50=0.10%, 100=0.42%, 250=0.65%, 500=0.13%, 750=0.20% lat (usec) : 1000=0.26% lat (msec) : 2=1.43%, 4=5.92%, 10=16.28%, 20=37.66%, 50=34.83% lat (msec) : 100=2.05%, 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=26.15%, ctx=9821, 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=190140: Sat Jul 18 18:57:59 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(5940KiB/57772msec) clat (usec): min=28, max=91599, avg=20430.15, stdev=11306.37 lat (usec): min=28, max=91600, avg=20430.78, stdev=11306.44 clat percentiles (usec): | 1.00th=[ 117], 5.00th=[ 7635], 10.00th=[ 8979], 20.00th=[11076], | 30.00th=[13435], 40.00th=[15664], 50.00th=[18220], 60.00th=[20579], | 70.00th=[24249], 80.00th=[28705], 90.00th=[35390], 95.00th=[41157], | 99.00th=[54789], 99.50th=[66323], 99.90th=[76022], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 6, max= 184, per=24.86%, avg=102.69, stdev=35.31, samples=115 iops : min= 1, max= 46, avg=25.29, stdev= 8.89, samples=115 write: IOPS=27, BW=110KiB/s (113kB/s)(6348KiB/57772msec); 0 zone resets clat (usec): min=669, max=726536, avg=17151.72, stdev=22239.18 lat (usec): min=669, max=726537, avg=17152.49, stdev=22239.20 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2638], 10.00th=[ 3261], 20.00th=[ 5014], | 30.00th=[ 7832], 40.00th=[ 10814], 50.00th=[ 13698], 60.00th=[ 17171], | 70.00th=[ 21103], 80.00th=[ 26084], 90.00th=[ 33424], 95.00th=[ 41681], | 99.00th=[ 62129], 99.50th=[ 71828], 99.90th=[111674], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 13, max= 272, per=25.35%, avg=109.77, stdev=41.40, samples=115 iops : min= 3, max= 68, avg=27.06, stdev=10.40, samples=115 lat (usec) : 50=0.16%, 100=0.20%, 250=0.55%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.29% lat (msec) : 2=1.04%, 4=6.48%, 10=17.12%, 20=36.33%, 50=35.51% lat (msec) : 100=2.08%, 250=0.03%, 750=0.03% cpu : usr=0.07%, sys=26.17%, ctx=10093, 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=190141: Sat Jul 18 18:57:59 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(6028KiB/58033msec) clat (usec): min=30, max=229530, avg=20491.46, stdev=12548.07 lat (usec): min=31, max=229531, avg=20492.20, stdev=12548.19 clat percentiles (usec): | 1.00th=[ 116], 5.00th=[ 7504], 10.00th=[ 8717], 20.00th=[ 11076], | 30.00th=[ 13566], 40.00th=[ 15926], 50.00th=[ 18220], 60.00th=[ 21103], | 70.00th=[ 23987], 80.00th=[ 27657], 90.00th=[ 34866], 95.00th=[ 42206], | 99.00th=[ 57934], 99.50th=[ 67634], 99.90th=[ 83362], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 13, max= 200, per=24.90%, avg=102.83, stdev=35.35, samples=115 iops : min= 3, max= 50, avg=25.32, stdev= 8.91, samples=115 write: IOPS=26, BW=108KiB/s (110kB/s)(6260KiB/58033msec); 0 zone resets clat (usec): min=655, max=722009, avg=17217.95, stdev=22379.96 lat (usec): min=655, max=722009, avg=17218.81, stdev=22379.98 clat percentiles (usec): | 1.00th=[ 906], 5.00th=[ 2409], 10.00th=[ 3195], 20.00th=[ 4686], | 30.00th=[ 7963], 40.00th=[ 10552], 50.00th=[ 13566], 60.00th=[ 16909], | 70.00th=[ 21365], 80.00th=[ 26084], 90.00th=[ 34866], 95.00th=[ 44303], | 99.00th=[ 58459], 99.50th=[ 67634], 99.90th=[124257], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 20, max= 192, per=24.58%, avg=106.42, stdev=39.52, samples=115 iops : min= 5, max= 48, avg=26.23, stdev= 9.89, samples=115 lat (usec) : 50=0.10%, 100=0.26%, 250=0.65%, 500=0.10%, 750=0.23% lat (usec) : 1000=0.33% lat (msec) : 2=1.24%, 4=6.45%, 10=17.02%, 20=35.68%, 50=35.45% lat (msec) : 100=2.41%, 250=0.07%, 750=0.03% cpu : usr=0.07%, sys=25.73%, ctx=10153, 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=190142: Sat Jul 18 18:57:59 2026 read: IOPS=26, BW=105KiB/s (107kB/s)(6052KiB/57851msec) clat (usec): min=74, max=138760, avg=20412.32, stdev=11966.22 lat (usec): min=75, max=138761, avg=20413.01, stdev=11966.27 clat percentiles (usec): | 1.00th=[ 112], 5.00th=[ 7308], 10.00th=[ 8979], 20.00th=[ 11469], | 30.00th=[ 13566], 40.00th=[ 15795], 50.00th=[ 18220], 60.00th=[ 20841], | 70.00th=[ 23987], 80.00th=[ 28443], 90.00th=[ 34866], 95.00th=[ 40633], | 99.00th=[ 60556], 99.50th=[ 64226], 99.90th=[114820], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 24, max= 200, per=25.50%, avg=105.30, stdev=32.82, samples=114 iops : min= 6, max= 50, avg=25.94, stdev= 8.29, samples=114 write: IOPS=26, BW=108KiB/s (110kB/s)(6236KiB/57851msec); 0 zone resets clat (usec): min=758, max=735110, avg=17164.39, stdev=22126.98 lat (usec): min=759, max=735111, avg=17165.22, stdev=22127.01 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 2540], 10.00th=[ 3130], 20.00th=[ 5014], | 30.00th=[ 8160], 40.00th=[ 11207], 50.00th=[ 14484], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 32900], 95.00th=[ 40633], | 99.00th=[ 54789], 99.50th=[ 61604], 99.90th=[ 85459], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 31, max= 199, per=25.01%, avg=108.31, stdev=35.87, samples=114 iops : min= 7, max= 49, avg=26.69, stdev= 9.05, samples=114 lat (usec) : 100=0.20%, 250=1.14%, 500=0.16%, 1000=0.33% lat (msec) : 2=1.33%, 4=6.05%, 10=16.02%, 20=36.72%, 50=35.81% lat (msec) : 100=2.12%, 250=0.10%, 750=0.03% cpu : usr=0.07%, sys=25.98%, ctx=9992, 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=414KiB/s (424kB/s), 103KiB/s-105KiB/s (105kB/s-108kB/s), io=23.4MiB (24.6MB), run=57057-58033msec WRITE: bw=433KiB/s (444kB/s), 108KiB/s-110KiB/s (110kB/s-113kB/s), io=24.6MiB (25.7MB), run=57057-58033msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190143: Sat Jul 18 18:58:06 2026 read: IOPS=23, BW=92.6KiB/s (94.8kB/s)(5992KiB/64716msec) clat (msec): min=2, max=737, avg=18.91, stdev=23.74 lat (msec): min=2, max=737, avg=18.91, stdev=23.74 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 50], | 99.00th=[ 72], 99.50th=[ 78], 99.90th=[ 125], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 23, max= 408, per=25.13%, avg=92.72, stdev=72.61, samples=127 iops : min= 5, max= 102, avg=22.80, stdev=18.26, samples=127 write: IOPS=24, BW=97.3KiB/s (99.6kB/s)(6296KiB/64716msec); 0 zone resets clat (msec): min=4, max=139, avg=23.00, stdev=16.96 lat (msec): min=4, max=139, avg=23.00, stdev=16.97 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 56], | 99.00th=[ 82], 99.50th=[ 92], 99.90th=[ 120], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 23, max= 392, per=25.07%, avg=97.01, stdev=73.06, samples=127 iops : min= 5, max= 98, avg=23.87, stdev=18.37, samples=127 lat (msec) : 4=1.53%, 10=30.31%, 20=27.12%, 50=35.09%, 100=5.73% lat (msec) : 250=0.20%, 750=0.03% cpu : usr=0.09%, sys=14.29%, ctx=6799, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190144: Sat Jul 18 18:58:06 2026 read: IOPS=22, BW=91.5KiB/s (93.7kB/s)(5940KiB/64884msec) clat (msec): min=2, max=729, avg=18.84, stdev=23.47 lat (msec): min=2, max=729, avg=18.84, stdev=23.47 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 39], 95.00th=[ 49], | 99.00th=[ 69], 99.50th=[ 72], 99.90th=[ 91], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 16, max= 384, per=24.96%, avg=92.12, stdev=73.06, samples=128 iops : min= 4, max= 96, avg=22.66, stdev=18.37, samples=128 write: IOPS=24, BW=97.8KiB/s (100kB/s)(6348KiB/64884msec); 0 zone resets clat (msec): min=3, max=181, avg=23.14, stdev=17.45 lat (msec): min=3, max=181, avg=23.14, stdev=17.45 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 56], | 99.00th=[ 86], 99.50th=[ 100], 99.90th=[ 138], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 32, max= 392, per=25.44%, avg=98.44, stdev=72.82, samples=128 iops : min= 8, max= 98, avg=24.23, stdev=18.33, samples=128 lat (msec) : 4=1.46%, 10=30.44%, 20=27.28%, 50=34.73%, 100=5.83% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.09%, sys=14.27%, ctx=6534, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190145: Sat Jul 18 18:58:06 2026 read: IOPS=23, BW=92.9KiB/s (95.1kB/s)(6028KiB/64883msec) clat (usec): min=2752, max=94359, avg=18546.79, stdev=14560.83 lat (usec): min=2753, max=94360, avg=18547.42, stdev=14560.92 clat percentiles (usec): | 1.00th=[ 3490], 5.00th=[ 4293], 10.00th=[ 4817], 20.00th=[ 5932], | 30.00th=[ 8225], 40.00th=[11469], 50.00th=[14877], 60.00th=[18220], | 70.00th=[22938], 80.00th=[27919], 90.00th=[38536], 95.00th=[46924], | 99.00th=[70779], 99.50th=[76022], 99.90th=[89654], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 15, max= 384, per=25.36%, avg=93.56, stdev=73.19, samples=128 iops : min= 3, max= 96, avg=23.02, stdev=18.41, samples=128 write: IOPS=24, BW=96.5KiB/s (98.8kB/s)(6260KiB/64883msec); 0 zone resets clat (msec): min=4, max=730, avg=23.49, stdev=24.71 lat (msec): min=4, max=730, avg=23.49, stdev=24.71 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 44], 95.00th=[ 54], | 99.00th=[ 82], 99.50th=[ 105], 99.90th=[ 146], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 15, max= 376, per=25.08%, avg=97.06, stdev=71.50, samples=128 iops : min= 3, max= 94, avg=23.89, stdev=18.00, samples=128 lat (msec) : 4=1.33%, 10=30.34%, 20=26.53%, 50=36.46%, 100=5.08% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.06%, sys=14.35%, ctx=6801, 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=190146: Sat Jul 18 18:58:06 2026 read: IOPS=23, BW=93.2KiB/s (95.4kB/s)(6052KiB/64946msec) clat (usec): min=2391, max=93352, avg=18907.75, stdev=14950.14 lat (usec): min=2392, max=93353, avg=18908.31, stdev=14950.19 clat percentiles (usec): | 1.00th=[ 3261], 5.00th=[ 4293], 10.00th=[ 4686], 20.00th=[ 5800], | 30.00th=[ 8225], 40.00th=[11600], 50.00th=[15139], 60.00th=[18220], | 70.00th=[22938], 80.00th=[29230], 90.00th=[40109], 95.00th=[49546], | 99.00th=[69731], 99.50th=[73925], 99.90th=[89654], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 15, max= 376, per=25.25%, avg=93.19, stdev=71.93, samples=128 iops : min= 3, max= 94, avg=22.92, stdev=18.10, samples=128 write: IOPS=24, BW=96.0KiB/s (98.3kB/s)(6236KiB/64946msec); 0 zone resets clat (msec): min=3, max=732, avg=23.20, stdev=25.06 lat (msec): min=3, max=732, avg=23.20, stdev=25.06 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 44], 95.00th=[ 54], | 99.00th=[ 87], 99.50th=[ 104], 99.90th=[ 182], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 31, max= 400, per=24.85%, avg=96.19, stdev=73.27, samples=128 iops : min= 7, max= 100, avg=23.67, stdev=18.43, samples=128 lat (msec) : 4=1.73%, 10=30.24%, 20=26.86%, 50=35.45%, 100=5.34% lat (msec) : 250=0.36%, 750=0.03% cpu : usr=0.05%, sys=14.25%, ctx=6751, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=370KiB/s (379kB/s), 91.5KiB/s-93.2KiB/s (93.7kB/s-95.4kB/s), io=23.4MiB (24.6MB), run=64716-64946msec WRITE: bw=387KiB/s (396kB/s), 96.0KiB/s-97.8KiB/s (98.3kB/s-100kB/s), io=24.6MiB (25.7MB), run=64716-64946msec 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=190176: Sat Jul 18 18:58:25 2026 read: IOPS=26, BW=426KiB/s (436kB/s)(5920KiB/13909msec) clat (usec): min=37, max=67794, avg=18335.89, stdev=9842.89 lat (usec): min=37, max=67794, avg=18336.63, stdev=9842.64 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 121], 10.00th=[ 7832], 20.00th=[11338], | 30.00th=[13042], 40.00th=[15664], 50.00th=[17695], 60.00th=[20055], | 70.00th=[22676], 80.00th=[25822], 90.00th=[29754], 95.00th=[34866], | 99.00th=[45351], 99.50th=[47449], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 222, max= 640, per=24.98%, avg=416.63, stdev=118.03, samples=27 iops : min= 13, max= 40, avg=25.63, stdev= 7.50, samples=27 write: IOPS=28, BW=458KiB/s (469kB/s)(6368KiB/13909msec); 0 zone resets clat (usec): min=956, max=65829, avg=17752.38, stdev=12281.03 lat (usec): min=957, max=65830, avg=17753.35, stdev=12281.12 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 3818], 10.00th=[ 4621], 20.00th=[ 5997], | 30.00th=[10028], 40.00th=[12649], 50.00th=[15008], 60.00th=[17957], | 70.00th=[22676], 80.00th=[26608], 90.00th=[35914], 95.00th=[43779], | 99.00th=[54264], 99.50th=[55837], 99.90th=[65799], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 255, max= 638, per=25.85%, avg=453.74, stdev=100.60, samples=27 iops : min= 15, max= 39, avg=27.96, stdev= 6.24, samples=27 lat (usec) : 50=0.26%, 100=1.69%, 250=1.69%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.39%, 4=2.86%, 10=15.76%, 20=38.15%, 50=37.76% lat (msec) : 100=1.04% cpu : usr=0.06%, sys=27.96%, ctx=2828, 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=190177: Sat Jul 18 18:58:25 2026 read: IOPS=25, BW=400KiB/s (410kB/s)(5744KiB/14358msec) clat (usec): min=80, max=63155, avg=19651.32, stdev=10241.55 lat (usec): min=80, max=63155, avg=19651.89, stdev=10241.57 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 6325], 10.00th=[ 9503], 20.00th=[12256], | 30.00th=[13960], 40.00th=[15926], 50.00th=[18220], 60.00th=[20317], | 70.00th=[22938], 80.00th=[26608], 90.00th=[33162], 95.00th=[39584], | 99.00th=[52167], 99.50th=[57410], 99.90th=[63177], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 182, max= 574, per=23.83%, avg=397.50, stdev=107.92, samples=28 iops : min= 11, max= 35, avg=24.46, stdev= 6.78, samples=28 write: IOPS=28, BW=456KiB/s (467kB/s)(6544KiB/14358msec); 0 zone resets clat (usec): min=1130, max=88013, avg=17672.26, stdev=12152.94 lat (usec): min=1131, max=88013, avg=17673.25, stdev=12152.96 clat percentiles (usec): | 1.00th=[ 2024], 5.00th=[ 3785], 10.00th=[ 4817], 20.00th=[ 7373], | 30.00th=[ 9896], 40.00th=[12649], 50.00th=[14877], 60.00th=[17695], | 70.00th=[21627], 80.00th=[26870], 90.00th=[33817], 95.00th=[40633], | 99.00th=[51643], 99.50th=[60031], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 222, max= 640, per=25.63%, avg=449.75, stdev=112.99, samples=28 iops : min= 13, max= 40, avg=27.71, stdev= 7.26, samples=28 lat (usec) : 100=0.78%, 250=1.17%, 500=0.13% lat (msec) : 2=0.39%, 4=2.47%, 10=16.28%, 20=41.28%, 50=35.81% lat (msec) : 100=1.69% cpu : usr=0.10%, sys=27.61%, ctx=3012, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190178: Sat Jul 18 18:58:25 2026 read: IOPS=27, BW=444KiB/s (455kB/s)(6256KiB/14079msec) clat (usec): min=31, max=86280, avg=19324.44, stdev=10996.48 lat (usec): min=31, max=86281, avg=19325.08, stdev=10996.52 clat percentiles (usec): | 1.00th=[ 74], 5.00th=[ 139], 10.00th=[ 8979], 20.00th=[11600], | 30.00th=[13566], 40.00th=[15270], 50.00th=[17433], 60.00th=[19792], | 70.00th=[22414], 80.00th=[26084], 90.00th=[32900], 95.00th=[39584], | 99.00th=[54789], 99.50th=[61604], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 222, max= 800, per=26.68%, avg=445.00, stdev=125.28, samples=27 iops : min= 13, max= 50, avg=27.41, stdev= 8.01, samples=27 write: IOPS=26, BW=428KiB/s (439kB/s)(6032KiB/14079msec); 0 zone resets clat (usec): min=1207, max=75922, avg=17255.86, stdev=11469.00 lat (usec): min=1208, max=75925, avg=17257.07, stdev=11469.14 clat percentiles (usec): | 1.00th=[ 2933], 5.00th=[ 4228], 10.00th=[ 4752], 20.00th=[ 7635], | 30.00th=[ 9896], 40.00th=[12518], 50.00th=[15008], 60.00th=[17957], | 70.00th=[21365], 80.00th=[25035], 90.00th=[32637], 95.00th=[36963], | 99.00th=[63177], 99.50th=[69731], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 224, max= 702, per=23.76%, avg=417.00, stdev=106.69, samples=27 iops : min= 14, max= 43, avg=25.67, stdev= 6.59, samples=27 lat (usec) : 50=0.13%, 100=1.56%, 250=1.17% lat (msec) : 2=0.26%, 4=1.95%, 10=16.15%, 20=42.84%, 50=34.24% lat (msec) : 100=1.69% cpu : usr=0.09%, sys=27.61%, ctx=2927, 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=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=190179: Sat Jul 18 18:58:25 2026 read: IOPS=26, BW=428KiB/s (438kB/s)(6032KiB/14098msec) clat (usec): min=58, max=84775, avg=19137.14, stdev=10312.21 lat (usec): min=59, max=84775, avg=19137.73, stdev=10312.20 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 131], 10.00th=[ 8979], 20.00th=[11731], | 30.00th=[13698], 40.00th=[15926], 50.00th=[17957], 60.00th=[19792], | 70.00th=[22152], 80.00th=[26084], 90.00th=[32637], 95.00th=[36439], | 99.00th=[50070], 99.50th=[57934], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 208, max= 608, per=25.41%, avg=423.85, stdev=112.78, samples=27 iops : min= 13, max= 38, avg=26.11, stdev= 7.16, samples=27 write: IOPS=27, BW=444KiB/s (454kB/s)(6256KiB/14098msec); 0 zone resets clat (usec): min=1842, max=57891, avg=17313.68, stdev=11548.41 lat (usec): min=1844, max=57892, avg=17315.51, stdev=11549.90 clat percentiles (usec): | 1.00th=[ 3064], 5.00th=[ 4015], 10.00th=[ 4621], 20.00th=[ 6456], | 30.00th=[10552], 40.00th=[12649], 50.00th=[14222], 60.00th=[17433], | 70.00th=[21365], 80.00th=[26608], 90.00th=[33817], 95.00th=[38536], | 99.00th=[55313], 99.50th=[57410], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 250, max= 701, per=25.19%, avg=442.11, stdev=115.48, samples=27 iops : min= 15, max= 43, avg=27.22, stdev= 7.30, samples=27 lat (usec) : 100=1.17%, 250=1.69%, 500=0.13%, 750=0.13% lat (msec) : 2=0.26%, 4=2.21%, 10=16.02%, 20=42.19%, 50=35.03% lat (msec) : 100=1.17% cpu : usr=0.05%, sys=27.58%, ctx=2912, 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=1668KiB/s (1708kB/s), 400KiB/s-444KiB/s (410kB/s-455kB/s), io=23.4MiB (24.5MB), run=13909-14358msec WRITE: bw=1755KiB/s (1797kB/s), 428KiB/s-458KiB/s (439kB/s-469kB/s), io=24.6MiB (25.8MB), run=13909-14358msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190172: Sat Jul 18 18:58:27 2026 read: IOPS=23, BW=373KiB/s (382kB/s)(5920KiB/15871msec) clat (usec): min=3960, max=84292, avg=18427.95, stdev=13826.78 lat (usec): min=3960, max=84293, avg=18429.92, stdev=13826.62 clat percentiles (usec): | 1.00th=[ 4686], 5.00th=[ 5407], 10.00th=[ 6194], 20.00th=[ 7439], | 30.00th=[ 9241], 40.00th=[11338], 50.00th=[13435], 60.00th=[15401], | 70.00th=[21365], 80.00th=[28705], 90.00th=[39584], 95.00th=[46924], | 99.00th=[62129], 99.50th=[80217], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 158, max= 1024, per=24.13%, avg=362.87, stdev=192.95, samples=31 iops : min= 9, max= 64, avg=22.39, stdev=12.15, samples=31 write: IOPS=25, BW=401KiB/s (411kB/s)(6368KiB/15871msec); 0 zone resets clat (usec): min=4772, max=92585, avg=22485.35, stdev=15030.02 lat (usec): min=4772, max=92587, avg=22486.48, stdev=15030.26 clat percentiles (usec): | 1.00th=[ 5211], 5.00th=[ 6390], 10.00th=[ 7308], 20.00th=[ 9503], | 30.00th=[11731], 40.00th=[14746], 50.00th=[18482], 60.00th=[22414], | 70.00th=[28967], 80.00th=[33817], 90.00th=[42730], 95.00th=[49546], | 99.00th=[71828], 99.50th=[82314], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 127, max= 1280, per=25.06%, avg=396.48, stdev=231.66, samples=31 iops : min= 7, max= 80, avg=24.48, stdev=14.61, samples=31 lat (msec) : 4=0.13%, 10=28.26%, 20=32.42%, 50=34.90%, 100=4.30% cpu : usr=0.03%, sys=14.35%, ctx=1710, 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=190173: Sat Jul 18 18:58:27 2026 read: IOPS=22, BW=361KiB/s (369kB/s)(5744KiB/15925msec) clat (usec): min=2709, max=84046, avg=17865.36, stdev=13082.81 lat (usec): min=2709, max=84047, avg=17865.90, stdev=13082.86 clat percentiles (usec): | 1.00th=[ 3294], 5.00th=[ 5604], 10.00th=[ 6521], 20.00th=[ 8356], | 30.00th=[10028], 40.00th=[11731], 50.00th=[14091], 60.00th=[16188], | 70.00th=[19530], 80.00th=[24511], 90.00th=[36439], 95.00th=[45351], | 99.00th=[65799], 99.50th=[77071], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 95, max= 864, per=23.52%, avg=353.71, stdev=189.59, samples=31 iops : min= 5, max= 54, avg=21.81, stdev=12.02, samples=31 write: IOPS=25, BW=411KiB/s (421kB/s)(6544KiB/15925msec); 0 zone resets clat (usec): min=4476, max=95213, avg=23163.98, stdev=15768.31 lat (usec): min=4478, max=95214, avg=23165.21, stdev=15768.40 clat percentiles (usec): | 1.00th=[ 4883], 5.00th=[ 6783], 10.00th=[ 7373], 20.00th=[ 9765], | 30.00th=[11863], 40.00th=[15139], 50.00th=[19006], 60.00th=[23200], | 70.00th=[29230], 80.00th=[34866], 90.00th=[43779], 95.00th=[54789], | 99.00th=[70779], 99.50th=[80217], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 192, max= 1312, per=24.96%, avg=394.84, stdev=224.11, samples=31 iops : min= 12, max= 82, avg=24.39, stdev=14.09, samples=31 lat (msec) : 4=0.78%, 10=25.00%, 20=35.29%, 50=33.07%, 100=5.86% cpu : usr=0.06%, sys=14.38%, ctx=1799, 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=190174: Sat Jul 18 18:58:27 2026 read: IOPS=24, BW=393KiB/s (403kB/s)(6256KiB/15906msec) clat (usec): min=3539, max=89713, avg=18219.21, stdev=14188.09 lat (usec): min=3540, max=89713, avg=18219.84, stdev=14188.11 clat percentiles (usec): | 1.00th=[ 4686], 5.00th=[ 5473], 10.00th=[ 6325], 20.00th=[ 8029], | 30.00th=[ 9372], 40.00th=[11207], 50.00th=[13566], 60.00th=[16319], | 70.00th=[20579], 80.00th=[25822], 90.00th=[34341], 95.00th=[46924], | 99.00th=[78119], 99.50th=[86508], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 127, max= 1312, per=25.86%, avg=388.87, stdev=242.87, samples=31 iops : min= 7, max= 82, avg=24.00, stdev=15.31, samples=31 write: IOPS=23, BW=379KiB/s (388kB/s)(6032KiB/15906msec); 0 zone resets clat (usec): min=4383, max=86432, avg=23065.89, stdev=15009.87 lat (usec): min=4384, max=86434, avg=23067.22, stdev=15009.87 clat percentiles (usec): | 1.00th=[ 5080], 5.00th=[ 6128], 10.00th=[ 7439], 20.00th=[10028], | 30.00th=[12256], 40.00th=[15270], 50.00th=[19006], 60.00th=[23200], | 70.00th=[28967], 80.00th=[34866], 90.00th=[44827], 95.00th=[53740], | 99.00th=[64750], 99.50th=[83362], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 128, max= 1024, per=23.12%, avg=365.71, stdev=203.03, samples=31 iops : min= 8, max= 64, avg=22.58, stdev=12.78, samples=31 lat (msec) : 4=0.13%, 10=27.21%, 20=32.81%, 50=34.38%, 100=5.47% cpu : usr=0.08%, sys=14.26%, ctx=1690, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190175: Sat Jul 18 18:58:27 2026 read: IOPS=23, BW=381KiB/s (390kB/s)(6032KiB/15829msec) clat (msec): min=3, max=108, avg=19.06, stdev=15.02 lat (msec): min=3, max=108, avg=19.06, stdev=15.02 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 52], | 99.00th=[ 79], 99.50th=[ 83], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 128, max= 1312, per=24.92%, avg=374.87, stdev=242.88, samples=31 iops : min= 8, max= 82, avg=23.13, stdev=15.24, samples=31 write: IOPS=24, BW=395KiB/s (405kB/s)(6256KiB/15829msec); 0 zone resets clat (usec): min=4907, max=87860, avg=22063.11, stdev=13812.65 lat (usec): min=4907, max=87861, avg=22064.30, stdev=13812.73 clat percentiles (usec): | 1.00th=[ 5473], 5.00th=[ 6456], 10.00th=[ 7701], 20.00th=[10028], | 30.00th=[12387], 40.00th=[15139], 50.00th=[18220], 60.00th=[22414], | 70.00th=[28181], 80.00th=[33817], 90.00th=[39060], 95.00th=[48497], | 99.00th=[69731], 99.50th=[77071], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 127, max= 1152, per=24.65%, avg=389.97, stdev=200.18, samples=31 iops : min= 7, max= 72, avg=24.06, stdev=12.67, samples=31 lat (msec) : 4=0.65%, 10=25.00%, 20=34.64%, 50=35.29%, 100=4.30% lat (msec) : 250=0.13% cpu : usr=0.06%, sys=14.28%, ctx=1738, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1504KiB/s (1540kB/s), 361KiB/s-393KiB/s (369kB/s-403kB/s), io=23.4MiB (24.5MB), run=15829-15925msec WRITE: bw=1582KiB/s (1620kB/s), 379KiB/s-411KiB/s (388kB/s-421kB/s), io=24.6MiB (25.8MB), run=15829-15925msec 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=190189: Sat Jul 18 18:58:39 2026 read: IOPS=1, BW=1569KiB/s (1607kB/s)(7168KiB/4568msec) clat (msec): min=128, max=539, avg=263.06, stdev=131.33 lat (msec): min=128, max=539, avg=263.06, stdev=131.33 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 199], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 230], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 292], 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= 2048, max= 4079, per=78.65%, avg=3004.25, stdev=1108.41, samples=4 iops : min= 2, max= 3, avg= 2.50, stdev= 0.58, samples=4 write: IOPS=1, BW=1121KiB/s (1148kB/s)(5120KiB/4568msec); 0 zone resets clat (msec): min=321, max=649, avg=535.97, stdev=134.20 lat (msec): min=321, max=649, avg=536.04, stdev=134.19 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 531], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1610, max= 2048, per=35.78%, avg=1913.80, stdev=185.10, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=41.67% cpu : usr=0.00%, sys=45.48%, ctx=880, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190190: Sat Jul 18 18:58:39 2026 read: IOPS=0, BW=382KiB/s (391kB/s)(2048KiB/5360msec) clat (usec): min=591, max=145878, avg=73234.93, stdev=102733.64 lat (usec): min=592, max=145881, avg=73236.80, stdev=102734.43 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 594], | 30.00th=[ 594], 40.00th=[ 594], 50.00th=[ 594], 60.00th=[145753], | 70.00th=[145753], 80.00th=[145753], 90.00th=[145753], 95.00th=[145753], | 99.00th=[145753], 99.50th=[145753], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 1610, max= 1924, per=46.26%, avg=1767.00, stdev=222.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1910KiB/s (1956kB/s)(10.0MiB/5360msec); 0 zone resets clat (msec): min=153, max=1249, avg=518.37, stdev=353.35 lat (msec): min=153, max=1249, avg=520.54, stdev=353.45 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 182], | 30.00th=[ 266], 40.00th=[ 363], 50.00th=[ 368], 60.00th=[ 527], | 70.00th=[ 535], 80.00th=[ 550], 90.00th=[ 995], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1610, max= 4096, per=47.28%, avg=2529.00, stdev=1054.31, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=25.00%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=42.34%, ctx=540, 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=190192: Sat Jul 18 18:58:39 2026 read: IOPS=1, BW=1350KiB/s (1383kB/s)(6144KiB/4550msec) clat (usec): min=619, max=739966, avg=308374.37, stdev=243288.70 lat (usec): min=620, max=739968, avg=308375.97, stdev=243288.68 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[214959], | 30.00th=[214959], 40.00th=[235930], 50.00th=[235930], 60.00th=[329253], | 70.00th=[329253], 80.00th=[329253], 90.00th=[742392], 95.00th=[742392], | 99.00th=[742392], 99.50th=[742392], 99.90th=[742392], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 1865, max= 4096, per=65.49%, avg=2501.75, stdev=1065.52, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1350KiB/s (1383kB/s)(6144KiB/4550msec); 0 zone resets clat (msec): min=270, max=751, avg=447.06, stdev=193.61 lat (msec): min=270, max=751, avg=447.12, stdev=193.64 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 477], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1610, max= 2048, per=35.74%, avg=1911.60, stdev=183.78, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=46.10%, ctx=754, 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=190194: Sat Jul 18 18:58:39 2026 read: IOPS=1, BW=1232KiB/s (1262kB/s)(5120KiB/4155msec) clat (usec): min=699, max=716673, avg=234357.20, stdev=292405.92 lat (usec): min=700, max=716752, avg=234374.14, stdev=292437.79 clat percentiles (usec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 791], 40.00th=[ 791], 50.00th=[219153], 60.00th=[219153], | 70.00th=[233833], 80.00th=[233833], 90.00th=[717226], 95.00th=[717226], | 99.00th=[717226], 99.50th=[717226], 99.90th=[717226], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 2007, max= 4830, per=89.49%, avg=3418.50, stdev=1996.16, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1725KiB/s (1767kB/s)(7168KiB/4155msec); 0 zone resets clat (msec): min=238, max=555, avg=414.79, stdev=126.96 lat (msec): min=238, max=555, avg=414.87, stdev=126.95 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 266], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 456], 60.00th=[ 477], | 70.00th=[ 477], 80.00th=[ 542], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1917, max= 4079, per=47.13%, avg=2520.75, stdev=1040.55, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=25.00% cpu : usr=0.05%, sys=49.98%, ctx=476, 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=3821KiB/s (3913kB/s), 382KiB/s-1569KiB/s (391kB/s-1607kB/s), io=20.0MiB (20.0MB), run=4155-5360msec WRITE: bw=5349KiB/s (5478kB/s), 1121KiB/s-1910KiB/s (1148kB/s-1956kB/s), io=28.0MiB (29.4MB), run=4155-5360msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190188: Sat Jul 18 18:58:39 2026 read: IOPS=1, BW=1640KiB/s (1680kB/s)(7168KiB/4370msec) clat (msec): min=103, max=1110, avg=287.15, stdev=364.79 lat (msec): min=103, max=1110, avg=287.15, stdev=364.79 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 108], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 161], 60.00th=[ 182], | 70.00th=[ 182], 80.00th=[ 190], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1868, max= 5626, per=78.47%, avg=2893.25, stdev=1823.64, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 write: IOPS=1, BW=1172KiB/s (1200kB/s)(5120KiB/4370msec); 0 zone resets clat (msec): min=135, max=738, avg=468.69, stdev=218.87 lat (msec): min=135, max=738, avg=468.81, stdev=218.88 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1868, max= 2048, per=38.89%, avg=2007.60, stdev=78.35, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 250=58.33%, 500=8.33%, 750=25.00%, 2000=8.33% cpu : usr=0.02%, sys=17.12%, ctx=146, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190191: Sat Jul 18 18:58:39 2026 read: IOPS=0, BW=369KiB/s (378kB/s)(2048KiB/5554msec) clat (msec): min=90, max=118, avg=104.54, stdev=19.67 lat (msec): min=90, max=118, avg=104.54, stdev=19.67 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 91], 60.00th=[ 118], | 70.00th=[ 118], 80.00th=[ 118], 90.00th=[ 118], 95.00th=[ 118], | 99.00th=[ 118], 99.50th=[ 118], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 1882, max= 2043, per=53.23%, avg=1962.50, stdev=113.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1844KiB/s (1888kB/s)(10.0MiB/5554msec); 0 zone resets clat (msec): min=78, max=1373, avg=523.80, stdev=441.79 lat (msec): min=78, max=1373, avg=523.90, stdev=441.79 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 110], | 30.00th=[ 148], 40.00th=[ 197], 50.00th=[ 334], 60.00th=[ 414], | 70.00th=[ 751], 80.00th=[ 877], 90.00th=[ 961], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 2007, max= 3737, per=46.04%, avg=2376.60, stdev=760.68, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 1000=25.00%, 2000=8.33% cpu : usr=0.00%, sys=15.78%, ctx=173, 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=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=190193: Sat Jul 18 18:58:39 2026 read: IOPS=1, BW=1192KiB/s (1221kB/s)(6144KiB/5153msec) clat (msec): min=82, max=675, avg=250.08, stdev=229.48 lat (msec): min=82, max=675, avg=250.08, stdev=229.48 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 99], | 30.00th=[ 99], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 176], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1868, max= 4015, per=67.60%, avg=2492.25, stdev=1018.51, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1192KiB/s (1221kB/s)(6144KiB/5153msec); 0 zone resets clat (msec): min=124, max=979, avg=593.53, stdev=393.81 lat (msec): min=124, max=979, avg=593.62, stdev=393.82 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 852], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 2007, max= 2048, per=39.45%, avg=2036.67, stdev=15.81, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 750=8.33%, 1000=25.00% cpu : usr=0.00%, sys=17.06%, ctx=294, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190195: Sat Jul 18 18:58:39 2026 read: IOPS=0, BW=925KiB/s (948kB/s)(5120KiB/5533msec) clat (msec): min=41, max=646, avg=392.33, stdev=296.53 lat (msec): min=41, max=646, avg=392.33, stdev=296.53 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 42], | 30.00th=[ 99], 40.00th=[ 99], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 2007, max= 4087, per=73.61%, avg=2714.00, stdev=1189.23, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1295KiB/s (1327kB/s)(7168KiB/5533msec); 0 zone resets clat (msec): min=69, max=1251, avg=501.42, stdev=447.30 lat (msec): min=69, max=1251, avg=501.51, stdev=447.30 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 96], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 355], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 978], 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= 2031, max= 3737, per=50.44%, avg=2603.67, stdev=981.51, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 500=25.00%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=15.82%, ctx=425, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3687KiB/s (3776kB/s), 369KiB/s-1640KiB/s (378kB/s-1680kB/s), io=20.0MiB (20.0MB), run=4370-5554msec WRITE: bw=5162KiB/s (5286kB/s), 1172KiB/s-1844KiB/s (1200kB/s-1888kB/s), io=28.0MiB (29.4MB), run=4370-5554msec 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=190205: Sat Jul 18 18:58:47 2026 read: IOPS=1, BW=6950KiB/s (7117kB/s)(12.0MiB/1768msec) clat (msec): min=396, max=829, avg=584.98, stdev=222.18 lat (msec): min=396, max=829, avg=584.98, stdev=222.18 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 827], 80.00th=[ 827], 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=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=14.49%, ctx=97, 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=190206: Sat Jul 18 18:58:47 2026 read: IOPS=0, BW=2096KiB/s (2147kB/s)(4096KiB/1954msec) clat (nsec): min=909379k, max=909379k, avg=909379184.00, stdev= 0.00 lat (nsec): min=909381k, max=909381k, avg=909381480.00, stdev= 0.00 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=[ 911], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 8192, max= 8192, per=97.71%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4192KiB/s (4293kB/s)(8192KiB/1954msec); 0 zone resets clat (msec): min=363, max=641, avg=502.38, stdev=197.03 lat (msec): min=363, max=642, avg=502.94, stdev=197.04 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=12.24%, ctx=78, 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=190207: Sat Jul 18 18:58:47 2026 write: IOPS=2, BW=8451KiB/s (8654kB/s)(12.0MiB/1454msec); 0 zone resets clat (msec): min=223, max=832, avg=478.61, stdev=316.70 lat (msec): min=223, max=833, avg=479.21, stdev=316.66 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7340, max= 8192, per=46.31%, avg=7766.00, stdev=602.45, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.14%, sys=21.40%, ctx=71, 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=190208: Sat Jul 18 18:58:47 2026 write: IOPS=1, BW=8016KiB/s (8208kB/s)(12.0MiB/1533msec); 0 zone resets clat (msec): min=158, max=970, avg=500.26, stdev=420.99 lat (msec): min=159, max=971, avg=500.65, stdev=421.07 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 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= 7406, max= 7406, per=44.16%, avg=7406.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.07%, sys=18.47%, ctx=69, 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=8385KiB/s (8586kB/s), 2096KiB/s-6950KiB/s (2147kB/s-7117kB/s), io=16.0MiB (16.8MB), run=1768-1954msec WRITE: bw=16.4MiB/s (17.2MB/s), 4192KiB/s-8451KiB/s (4293kB/s-8654kB/s), io=32.0MiB (33.6MB), run=1454-1954msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190210: Sat Jul 18 18:58:47 2026 read: IOPS=2, BW=9699KiB/s (9931kB/s)(12.0MiB/1267msec) clat (msec): min=342, max=461, avg=402.31, stdev=59.72 lat (msec): min=342, max=461, avg=402.32, stdev=59.72 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 7742, max= 8192, per=80.29%, avg=7967.00, stdev=318.20, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=57.42%, ctx=2792, 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=190211: Sat Jul 18 18:58:47 2026 read: IOPS=0, BW=2481KiB/s (2540kB/s)(4096KiB/1651msec) clat (nsec): min=418543k, max=418543k, avg=418542592.00, stdev= 0.00 lat (nsec): min=418545k, max=418545k, avg=418545221.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 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= 7301, max= 7301, per=73.58%, avg=7301.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4962KiB/s (5081kB/s)(8192KiB/1651msec); 0 zone resets clat (msec): min=506, max=709, avg=608.16, stdev=143.53 lat (msec): min=507, max=710, avg=608.68, stdev=143.30 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7937, max= 7937, per=45.61%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=19.58%, ctx=952, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190212: Sat Jul 18 18:58:47 2026 write: IOPS=1, BW=6526KiB/s (6682kB/s)(12.0MiB/1883msec); 0 zone resets clat (msec): min=109, max=1141, avg=604.43, stdev=517.43 lat (msec): min=109, max=1142, avg=604.79, stdev=517.40 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7937, max= 7937, per=45.61%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.65%, ctx=55, 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=190213: Sat Jul 18 18:58:47 2026 write: IOPS=1, BW=7416KiB/s (7594kB/s)(12.0MiB/1657msec); 0 zone resets clat (msec): min=185, max=772, avg=542.16, stdev=313.27 lat (msec): min=185, max=772, avg=542.66, stdev=313.37 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7937, max= 8192, per=46.34%, avg=8064.50, stdev=180.31, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.12%, sys=16.49%, ctx=54, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=9924KiB/s (10.2MB/s), 2481KiB/s-9699KiB/s (2540kB/s-9931kB/s), io=16.0MiB (16.8MB), run=1267-1651msec WRITE: bw=16.0MiB/s (17.8MB/s), 4962KiB/s-7416KiB/s (5081kB/s-7594kB/s), io=32.0MiB (33.6MB), run=1651-1883msec