== sanity test 398b: DIO and buffer IO race ============== 03:08:32 (1786172912) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.63785 s, 8.9 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=143199: Sat Aug 8 03:12:57 2026 read: IOPS=6, BW=24.4KiB/s (24.9kB/s)(5992KiB/245985msec) clat (usec): min=38, max=582590, avg=90207.49, stdev=73790.68 lat (usec): min=38, max=582592, avg=90217.57, stdev=73792.28 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 302], 10.00th=[ 23987], 20.00th=[ 35914], | 30.00th=[ 47449], 40.00th=[ 60031], 50.00th=[ 72877], 60.00th=[ 85459], | 70.00th=[106431], 80.00th=[133694], 90.00th=[175113], 95.00th=[227541], | 99.00th=[379585], 99.50th=[425722], 99.90th=[541066], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 6, max= 91, per=26.16%, avg=25.38, stdev=13.08, samples=448 iops : min= 1, max= 22, avg= 5.73, stdev= 3.32, samples=448 write: IOPS=6, BW=25.6KiB/s (26.2kB/s)(6296KiB/245985msec); 0 zone resets clat (usec): min=1234, max=744985, avg=70248.99, stdev=79916.65 lat (usec): min=1235, max=744987, avg=70252.38, stdev=79918.69 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 2089], 10.00th=[ 2933], 20.00th=[ 5800], | 30.00th=[ 13173], 40.00th=[ 27657], 50.00th=[ 45351], 60.00th=[ 63701], | 70.00th=[ 89654], 80.00th=[120062], 90.00th=[177210], 95.00th=[229639], | 99.00th=[358613], 99.50th=[413139], 99.90th=[574620], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 6, max= 94, per=26.27%, avg=26.53, stdev=15.14, samples=450 iops : min= 1, max= 23, avg= 6.03, stdev= 3.84, samples=450 lat (usec) : 50=0.20%, 100=1.76%, 250=0.46%, 500=0.10%, 750=0.03% lat (msec) : 2=2.21%, 4=5.18%, 10=6.51%, 20=5.18%, 50=21.16% lat (msec) : 100=27.77%, 250=25.65%, 500=3.61%, 750=0.20% cpu : usr=0.05%, sys=3.45%, ctx=6683, 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=143200: Sat Aug 8 03:12:57 2026 read: IOPS=6, BW=24.1KiB/s (24.7kB/s)(5940KiB/246478msec) clat (usec): min=47, max=643066, avg=88988.11, stdev=72076.14 lat (usec): min=48, max=643068, avg=88991.91, stdev=72076.83 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 15926], 10.00th=[ 23200], 20.00th=[ 34866], | 30.00th=[ 45351], 40.00th=[ 57410], 50.00th=[ 70779], 60.00th=[ 88605], | 70.00th=[105382], 80.00th=[132645], 90.00th=[173016], 95.00th=[227541], | 99.00th=[333448], 99.50th=[396362], 99.90th=[624952], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 4, max= 80, per=25.42%, avg=24.65, stdev=13.05, samples=456 iops : min= 1, max= 20, avg= 5.55, stdev= 3.30, samples=456 write: IOPS=6, BW=25.8KiB/s (26.4kB/s)(6348KiB/246478msec); 0 zone resets clat (usec): min=1116, max=712719, avg=71817.70, stdev=77957.97 lat (usec): min=1118, max=712720, avg=71830.51, stdev=77954.98 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 2089], 10.00th=[ 2966], 20.00th=[ 7111], | 30.00th=[ 15533], 40.00th=[ 31851], 50.00th=[ 49021], 60.00th=[ 69731], | 70.00th=[ 90702], 80.00th=[122160], 90.00th=[175113], 95.00th=[223347], | 99.00th=[337642], 99.50th=[379585], 99.90th=[599786], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 86, per=26.04%, avg=26.30, stdev=15.29, samples=456 iops : min= 1, max= 21, avg= 5.97, stdev= 3.89, samples=456 lat (usec) : 50=0.07%, 100=1.30%, 250=0.29%, 500=0.03%, 750=0.03% lat (msec) : 2=2.44%, 4=4.69%, 10=5.76%, 20=6.09%, 50=21.78% lat (msec) : 100=28.03%, 250=26.01%, 500=3.29%, 750=0.20% cpu : usr=0.05%, sys=3.04%, ctx=6901, 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=143201: Sat Aug 8 03:12:57 2026 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(6028KiB/247196msec) clat (usec): min=46, max=672600, avg=88870.11, stdev=72609.02 lat (usec): min=47, max=672602, avg=88875.51, stdev=72608.28 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10290], 10.00th=[ 22938], 20.00th=[ 35390], | 30.00th=[ 46400], 40.00th=[ 58459], 50.00th=[ 71828], 60.00th=[ 87557], | 70.00th=[104334], 80.00th=[129500], 90.00th=[175113], 95.00th=[217056], | 99.00th=[346031], 99.50th=[455082], 99.90th=[549454], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 6, max= 80, per=25.76%, avg=24.98, stdev=13.83, samples=458 iops : min= 1, max= 20, avg= 5.64, stdev= 3.52, samples=458 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6260KiB/247196msec); 0 zone resets clat (usec): min=1185, max=534890, avg=72147.11, stdev=79400.45 lat (usec): min=1186, max=534892, avg=72162.72, stdev=79395.64 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1991], 10.00th=[ 2835], 20.00th=[ 5669], | 30.00th=[ 14222], 40.00th=[ 29754], 50.00th=[ 46924], 60.00th=[ 66847], | 70.00th=[ 93848], 80.00th=[125305], 90.00th=[177210], 95.00th=[229639], | 99.00th=[354419], 99.50th=[421528], 99.90th=[492831], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 6, max= 79, per=25.78%, avg=26.04, stdev=15.09, samples=454 iops : min= 1, max= 19, avg= 5.91, stdev= 3.84, samples=454 lat (usec) : 50=0.10%, 100=1.53%, 250=0.39%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=2.73%, 4=5.14%, 10=6.05%, 20=5.31%, 50=21.06% lat (msec) : 100=27.28%, 250=26.73%, 500=3.35%, 750=0.16% cpu : usr=0.05%, sys=3.40%, ctx=6733, 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=143202: Sat Aug 8 03:12:57 2026 read: IOPS=6, BW=24.7KiB/s (25.3kB/s)(6052KiB/245269msec) clat (usec): min=33, max=706224, avg=89864.71, stdev=74979.31 lat (usec): min=33, max=706226, avg=89873.19, stdev=74985.17 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 10814], 10.00th=[ 22938], 20.00th=[ 34866], | 30.00th=[ 44827], 40.00th=[ 56361], 50.00th=[ 70779], 60.00th=[ 88605], | 70.00th=[105382], 80.00th=[132645], 90.00th=[181404], 95.00th=[231736], | 99.00th=[341836], 99.50th=[408945], 99.90th=[658506], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 86, per=25.79%, avg=25.02, stdev=13.84, samples=458 iops : min= 1, max= 21, avg= 5.65, stdev= 3.50, samples=458 write: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6236KiB/245269msec); 0 zone resets clat (usec): min=1161, max=778153, avg=69849.30, stdev=76793.68 lat (usec): min=1163, max=778156, avg=69853.82, stdev=76796.66 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1991], 10.00th=[ 2835], 20.00th=[ 6259], | 30.00th=[ 15008], 40.00th=[ 30802], 50.00th=[ 47973], 60.00th=[ 64226], | 70.00th=[ 89654], 80.00th=[119014], 90.00th=[168821], 95.00th=[223347], | 99.00th=[325059], 99.50th=[408945], 99.90th=[492831], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 91, per=26.04%, avg=26.30, stdev=14.69, samples=448 iops : min= 1, max= 22, avg= 5.99, stdev= 3.73, samples=448 lat (usec) : 50=0.16%, 100=1.63%, 250=0.26%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=2.70%, 4=4.95%, 10=5.24%, 20=5.53%, 50=22.53% lat (msec) : 100=27.57%, 250=25.55%, 500=3.58%, 750=0.13%, 1000=0.03% cpu : usr=0.05%, sys=3.28%, ctx=6826, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=97.1KiB/s (99.5kB/s), 24.1KiB/s-24.7KiB/s (24.7kB/s-25.3kB/s), io=23.4MiB (24.6MB), run=245269-247196msec WRITE: bw=102KiB/s (104kB/s), 25.3KiB/s-25.8KiB/s (25.9kB/s-26.4kB/s), io=24.6MiB (25.7MB), run=245269-247196msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143194: Sat Aug 8 03:15:39 2026 read: IOPS=3, BW=14.7KiB/s (15.0kB/s)(5992KiB/408092msec) clat (msec): min=6, max=813, avg=80.38, stdev=87.47 lat (msec): min=6, max=813, avg=80.39, stdev=87.47 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 34], 40.00th=[ 44], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 109], 90.00th=[ 169], 95.00th=[ 241], | 99.00th=[ 472], 99.50th=[ 617], 99.90th=[ 776], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 6, max= 94, per=31.28%, avg=18.14, stdev=11.97, samples=620 iops : min= 1, max= 23, avg= 3.92, stdev= 3.04, samples=620 write: IOPS=3, BW=15.4KiB/s (15.8kB/s)(6296KiB/408092msec); 0 zone resets clat (msec): min=38, max=993, avg=182.38, stdev=119.16 lat (msec): min=38, max=993, avg=182.39, stdev=119.16 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 93], | 30.00th=[ 111], 40.00th=[ 129], 50.00th=[ 148], 60.00th=[ 174], | 70.00th=[ 205], 80.00th=[ 253], 90.00th=[ 334], 95.00th=[ 422], | 99.00th=[ 634], 99.50th=[ 718], 99.90th=[ 919], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 5, max= 47, per=26.67%, avg=16.27, stdev= 8.41, samples=725 iops : min= 1, max= 11, avg= 3.45, stdev= 2.16, samples=725 lat (msec) : 10=0.36%, 20=4.98%, 50=17.90%, 100=26.76%, 250=37.27% lat (msec) : 500=11.20%, 750=1.24%, 1000=0.29% cpu : usr=0.03%, sys=1.19%, ctx=5557, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143195: Sat Aug 8 03:15:39 2026 read: IOPS=3, BW=14.5KiB/s (14.8kB/s)(5940KiB/410559msec) clat (msec): min=5, max=613, avg=79.73, stdev=77.92 lat (msec): min=5, max=613, avg=79.74, stdev=77.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 25], | 30.00th=[ 34], 40.00th=[ 44], 50.00th=[ 55], 60.00th=[ 68], | 70.00th=[ 88], 80.00th=[ 116], 90.00th=[ 180], 95.00th=[ 241], | 99.00th=[ 384], 99.50th=[ 430], 99.90th=[ 592], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 5, max= 71, per=30.78%, avg=17.85, stdev=11.77, samples=626 iops : min= 1, max= 17, avg= 3.85, stdev= 3.01, samples=626 write: IOPS=3, BW=15.5KiB/s (15.8kB/s)(6348KiB/410559msec); 0 zone resets clat (msec): min=29, max=964, avg=183.66, stdev=123.54 lat (msec): min=29, max=964, avg=183.66, stdev=123.54 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 95], | 30.00th=[ 110], 40.00th=[ 126], 50.00th=[ 146], 60.00th=[ 169], | 70.00th=[ 203], 80.00th=[ 255], 90.00th=[ 347], 95.00th=[ 447], | 99.00th=[ 634], 99.50th=[ 718], 99.90th=[ 919], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 5, max= 63, per=26.89%, avg=16.40, stdev= 8.90, samples=725 iops : min= 1, max= 15, avg= 3.48, stdev= 2.29, samples=725 lat (msec) : 10=0.78%, 20=6.02%, 50=15.72%, 100=26.46%, 250=37.99% lat (msec) : 500=11.23%, 750=1.56%, 1000=0.23% cpu : usr=0.03%, sys=1.19%, ctx=5578, 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=143196: Sat Aug 8 03:15:39 2026 read: IOPS=3, BW=14.7KiB/s (15.1kB/s)(6028KiB/409104msec) clat (msec): min=7, max=780, avg=82.29, stdev=82.23 lat (msec): min=7, max=780, avg=82.30, stdev=82.23 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 26], | 30.00th=[ 34], 40.00th=[ 46], 50.00th=[ 57], 60.00th=[ 72], | 70.00th=[ 91], 80.00th=[ 116], 90.00th=[ 180], 95.00th=[ 247], | 99.00th=[ 388], 99.50th=[ 510], 99.90th=[ 659], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 5, max= 88, per=31.13%, avg=18.06, stdev=11.70, samples=626 iops : min= 1, max= 22, avg= 3.90, stdev= 3.00, samples=626 write: IOPS=3, BW=15.3KiB/s (15.7kB/s)(6260KiB/409104msec); 0 zone resets clat (msec): min=35, max=977, avg=181.74, stdev=123.00 lat (msec): min=35, max=977, avg=181.75, stdev=123.00 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 93], | 30.00th=[ 108], 40.00th=[ 126], 50.00th=[ 148], 60.00th=[ 171], | 70.00th=[ 203], 80.00th=[ 245], 90.00th=[ 338], 95.00th=[ 430], | 99.00th=[ 634], 99.50th=[ 776], 99.90th=[ 969], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 6, max= 47, per=26.29%, avg=16.04, stdev= 8.60, samples=728 iops : min= 1, max= 11, avg= 3.39, stdev= 2.20, samples=728 lat (msec) : 10=0.52%, 20=5.18%, 50=17.02%, 100=26.30%, 250=38.96% lat (msec) : 500=10.29%, 750=1.43%, 1000=0.29% cpu : usr=0.03%, sys=1.22%, ctx=5678, 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=143197: Sat Aug 8 03:15:39 2026 read: IOPS=3, BW=14.9KiB/s (15.2kB/s)(6052KiB/407323msec) clat (msec): min=6, max=705, avg=82.13, stdev=86.68 lat (msec): min=6, max=705, avg=82.13, stdev=86.68 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 26], | 30.00th=[ 33], 40.00th=[ 42], 50.00th=[ 53], 60.00th=[ 67], | 70.00th=[ 87], 80.00th=[ 118], 90.00th=[ 186], 95.00th=[ 264], | 99.00th=[ 430], 99.50th=[ 527], 99.90th=[ 667], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 5, max= 79, per=31.76%, avg=18.42, stdev=12.26, samples=620 iops : min= 1, max= 19, avg= 3.98, stdev= 3.11, samples=620 write: IOPS=3, BW=15.3KiB/s (15.7kB/s)(6236KiB/407323msec); 0 zone resets clat (msec): min=39, max=941, avg=181.19, stdev=114.23 lat (msec): min=39, max=941, avg=181.20, stdev=114.23 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 80], 20.00th=[ 95], | 30.00th=[ 111], 40.00th=[ 129], 50.00th=[ 148], 60.00th=[ 169], | 70.00th=[ 201], 80.00th=[ 251], 90.00th=[ 338], 95.00th=[ 414], | 99.00th=[ 609], 99.50th=[ 684], 99.90th=[ 877], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 5, max= 47, per=26.52%, avg=16.18, stdev= 8.27, samples=722 iops : min= 1, max= 11, avg= 3.43, stdev= 2.12, samples=722 lat (msec) : 10=0.55%, 20=5.83%, 50=17.94%, 100=23.73%, 250=39.00% lat (msec) : 500=11.75%, 750=1.07%, 1000=0.13% cpu : usr=0.03%, sys=1.18%, ctx=5579, 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=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=58.5KiB/s (59.9kB/s), 14.5KiB/s-14.9KiB/s (14.8kB/s-15.2kB/s), io=23.4MiB (24.6MB), run=407323-410559msec WRITE: bw=61.2KiB/s (62.7kB/s), 15.3KiB/s-15.5KiB/s (15.7kB/s-15.8kB/s), io=24.6MiB (25.7MB), run=407323-410559msec 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=143277: Sat Aug 8 03:16:41 2026 read: IOPS=7, BW=114KiB/s (116kB/s)(5920KiB/52141msec) clat (usec): min=38, max=512907, avg=79407.11, stdev=66039.90 lat (usec): min=38, max=512908, avg=79408.76, stdev=66039.92 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 65], 10.00th=[ 123], 20.00th=[ 29230], | 30.00th=[ 43254], 40.00th=[ 55837], 50.00th=[ 67634], 60.00th=[ 82314], | 70.00th=[100140], 80.00th=[121111], 90.00th=[154141], 95.00th=[204473], | 99.00th=[295699], 99.50th=[408945], 99.90th=[513803], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 31, max= 252, per=25.15%, avg=113.43, stdev=53.53, samples=101 iops : min= 1, max= 15, avg= 6.38, stdev= 3.41, samples=101 write: IOPS=7, BW=122KiB/s (125kB/s)(6368KiB/52141msec); 0 zone resets clat (usec): min=1693, max=278750, avg=56480.24, stdev=60373.37 lat (usec): min=1695, max=278754, avg=56484.45, stdev=60372.49 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 7], | 30.00th=[ 12], 40.00th=[ 21], 50.00th=[ 34], 60.00th=[ 55], | 70.00th=[ 74], 80.00th=[ 101], 90.00th=[ 142], 95.00th=[ 178], | 99.00th=[ 264], 99.50th=[ 275], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 29, max= 347, per=26.34%, avg=124.84, stdev=68.63, samples=99 iops : min= 1, max= 21, avg= 7.08, stdev= 4.37, samples=99 lat (usec) : 50=0.65%, 100=3.91%, 250=1.43%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.26% lat (msec) : 2=0.39%, 4=5.34%, 10=8.72%, 20=7.16%, 50=18.36% lat (msec) : 100=28.65%, 250=22.79%, 500=1.69%, 750=0.13% cpu : usr=0.07%, sys=3.66%, ctx=1613, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143278: Sat Aug 8 03:16:41 2026 read: IOPS=6, BW=108KiB/s (111kB/s)(5744KiB/53070msec) clat (usec): min=37, max=455809, avg=81348.78, stdev=61741.81 lat (usec): min=37, max=455810, avg=81350.57, stdev=61741.66 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 70], 10.00th=[ 124], 20.00th=[ 35390], | 30.00th=[ 47973], 40.00th=[ 60031], 50.00th=[ 70779], 60.00th=[ 82314], | 70.00th=[100140], 80.00th=[125305], 90.00th=[162530], 95.00th=[202376], | 99.00th=[265290], 99.50th=[354419], 99.90th=[455082], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 30, max= 320, per=24.60%, avg=110.96, stdev=54.85, samples=100 iops : min= 1, max= 20, avg= 6.21, stdev= 3.51, samples=100 write: IOPS=7, BW=123KiB/s (126kB/s)(6544KiB/53070msec); 0 zone resets clat (usec): min=1584, max=402683, avg=57745.24, stdev=64856.33 lat (usec): min=1586, max=402687, avg=57752.80, stdev=64856.98 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 12], 40.00th=[ 21], 50.00th=[ 34], 60.00th=[ 50], | 70.00th=[ 75], 80.00th=[ 108], 90.00th=[ 144], 95.00th=[ 180], | 99.00th=[ 284], 99.50th=[ 326], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 30, max= 381, per=26.09%, avg=123.67, stdev=67.99, samples=102 iops : min= 1, max= 23, avg= 7.02, stdev= 4.30, samples=102 lat (usec) : 50=0.26%, 100=3.65%, 250=1.43%, 750=0.13% lat (msec) : 2=0.39%, 4=4.95%, 10=9.51%, 20=6.77%, 50=20.18% lat (msec) : 100=27.21%, 250=23.70%, 500=1.82% cpu : usr=0.05%, sys=3.93%, ctx=1674, 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=143279: Sat Aug 8 03:16:41 2026 read: IOPS=7, BW=120KiB/s (123kB/s)(6256KiB/52027msec) clat (usec): min=36, max=415063, avg=74605.49, stdev=62224.45 lat (usec): min=36, max=415064, avg=74613.79, stdev=62224.28 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 62], 10.00th=[ 83], 20.00th=[ 22938], | 30.00th=[ 38536], 40.00th=[ 50070], 50.00th=[ 62129], 60.00th=[ 74974], | 70.00th=[ 94897], 80.00th=[117965], 90.00th=[160433], 95.00th=[187696], | 99.00th=[270533], 99.50th=[287310], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 29, max= 256, per=27.14%, avg=122.39, stdev=59.23, samples=99 iops : min= 1, max= 16, avg= 6.93, stdev= 3.76, samples=99 write: IOPS=7, BW=116KiB/s (119kB/s)(6032KiB/52027msec); 0 zone resets clat (usec): min=1631, max=422055, avg=60267.49, stdev=69950.27 lat (usec): min=1633, max=422056, avg=60270.65, stdev=69950.03 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2835], 10.00th=[ 3916], 20.00th=[ 6194], | 30.00th=[ 10159], 40.00th=[ 18482], 50.00th=[ 33817], 60.00th=[ 56361], | 70.00th=[ 78119], 80.00th=[102237], 90.00th=[152044], 95.00th=[219153], | 99.00th=[278922], 99.50th=[375391], 99.90th=[421528], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 29, max= 347, per=25.18%, avg=119.37, stdev=63.63, samples=97 iops : min= 1, max= 21, avg= 6.75, stdev= 4.05, samples=97 lat (usec) : 50=0.65%, 100=5.60%, 250=0.91%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.91%, 4=4.69%, 10=9.51%, 20=6.90%, 50=19.14% lat (msec) : 100=25.65%, 250=22.92%, 500=2.34% cpu : usr=0.05%, sys=4.03%, ctx=1641, 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=143280: Sat Aug 8 03:16:41 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(6032KiB/50678msec) clat (usec): min=37, max=368200, avg=73666.55, stdev=62423.34 lat (usec): min=38, max=368202, avg=73669.39, stdev=62422.39 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 21365], | 30.00th=[ 39584], 40.00th=[ 51119], 50.00th=[ 63177], 60.00th=[ 77071], | 70.00th=[ 91751], 80.00th=[114820], 90.00th=[152044], 95.00th=[200279], | 99.00th=[304088], 99.50th=[333448], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 29, max= 288, per=26.27%, avg=118.46, stdev=57.23, samples=97 iops : min= 1, max= 18, avg= 6.69, stdev= 3.72, samples=97 write: IOPS=7, BW=123KiB/s (126kB/s)(6256KiB/50678msec); 0 zone resets clat (usec): min=1312, max=440854, avg=57845.91, stdev=68402.03 lat (usec): min=1315, max=440855, avg=57850.95, stdev=68400.60 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2409], 10.00th=[ 3195], 20.00th=[ 5669], | 30.00th=[ 9896], 40.00th=[ 16319], 50.00th=[ 29230], 60.00th=[ 51119], | 70.00th=[ 79168], 80.00th=[105382], 90.00th=[141558], 95.00th=[196084], | 99.00th=[295699], 99.50th=[367002], 99.90th=[442500], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 31, max= 378, per=26.47%, avg=125.48, stdev=75.07, samples=96 iops : min= 1, max= 23, avg= 7.15, stdev= 4.74, samples=96 lat (usec) : 50=0.91%, 100=6.12%, 250=0.91%, 750=0.52%, 1000=0.26% lat (msec) : 2=1.04%, 4=6.12%, 10=8.46%, 20=7.42%, 50=17.71% lat (msec) : 100=26.95%, 250=21.48%, 500=2.08% cpu : usr=0.06%, sys=4.02%, ctx=1565, 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=451KiB/s (462kB/s), 108KiB/s-120KiB/s (111kB/s-123kB/s), io=23.4MiB (24.5MB), run=50678-53070msec WRITE: bw=475KiB/s (486kB/s), 116KiB/s-123KiB/s (119kB/s-126kB/s), io=24.6MiB (25.8MB), run=50678-53070msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143282: Sat Aug 8 03:17:31 2026 read: IOPS=3, BW=59.1KiB/s (60.5kB/s)(5920KiB/100229msec) clat (msec): min=7, max=699, avg=76.55, stdev=74.21 lat (msec): min=7, max=699, avg=76.56, stdev=74.21 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 28], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 83], 80.00th=[ 109], 90.00th=[ 159], 95.00th=[ 192], | 99.00th=[ 376], 99.50th=[ 506], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 27, max= 216, per=31.29%, avg=72.90, stdev=41.97, samples=157 iops : min= 1, max= 13, avg= 3.83, stdev= 2.71, samples=157 write: IOPS=3, BW=63.5KiB/s (65.1kB/s)(6368KiB/100229msec); 0 zone resets clat (msec): min=48, max=685, avg=180.34, stdev=118.34 lat (msec): min=48, max=685, avg=180.34, stdev=118.34 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 94], | 30.00th=[ 110], 40.00th=[ 125], 50.00th=[ 140], 60.00th=[ 165], | 70.00th=[ 197], 80.00th=[ 245], 90.00th=[ 347], 95.00th=[ 443], | 99.00th=[ 584], 99.50th=[ 659], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 26, max= 159, per=27.68%, avg=67.81, stdev=35.51, samples=181 iops : min= 1, max= 9, avg= 3.52, stdev= 2.31, samples=181 lat (msec) : 10=0.39%, 20=4.95%, 50=16.67%, 100=27.34%, 250=39.32% lat (msec) : 500=9.24%, 750=2.08% cpu : usr=0.02%, sys=1.12%, ctx=1385, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143283: Sat Aug 8 03:17:31 2026 read: IOPS=3, BW=55.0KiB/s (57.3kB/s)(5744KiB/102642msec) clat (msec): min=6, max=460, avg=78.11, stdev=73.34 lat (msec): min=6, max=460, avg=78.11, stdev=73.33 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 18], 20.00th=[ 26], | 30.00th=[ 34], 40.00th=[ 44], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 89], 80.00th=[ 112], 90.00th=[ 171], 95.00th=[ 236], | 99.00th=[ 376], 99.50th=[ 435], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 27, max= 314, per=30.91%, avg=72.03, stdev=47.43, samples=152 iops : min= 1, max= 19, avg= 3.78, stdev= 3.03, samples=152 write: IOPS=3, BW=63.8KiB/s (65.3kB/s)(6544KiB/102642msec); 0 zone resets clat (msec): min=37, max=903, avg=182.08, stdev=119.71 lat (msec): min=38, max=903, avg=182.08, stdev=119.71 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 97], | 30.00th=[ 113], 40.00th=[ 130], 50.00th=[ 148], 60.00th=[ 165], | 70.00th=[ 199], 80.00th=[ 253], 90.00th=[ 342], 95.00th=[ 422], | 99.00th=[ 584], 99.50th=[ 667], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 22, max= 243, per=27.30%, avg=66.88, stdev=36.40, samples=186 iops : min= 1, max= 15, avg= 3.47, stdev= 2.35, samples=186 lat (msec) : 10=1.04%, 20=4.82%, 50=16.28%, 100=24.87%, 250=40.23% lat (msec) : 500=11.07%, 750=1.56%, 1000=0.13% cpu : usr=0.04%, sys=1.31%, ctx=1416, 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=143284: Sat Aug 8 03:17:31 2026 read: IOPS=3, BW=61.8KiB/s (63.3kB/s)(6256KiB/101269msec) clat (msec): min=9, max=605, avg=83.29, stdev=87.72 lat (msec): min=9, max=605, avg=83.29, stdev=87.72 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 21], 20.00th=[ 29], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 87], 80.00th=[ 120], 90.00th=[ 171], 95.00th=[ 279], | 99.00th=[ 472], 99.50th=[ 575], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 26, max= 256, per=32.10%, avg=74.80, stdev=48.75, samples=162 iops : min= 1, max= 16, avg= 3.96, stdev= 3.14, samples=162 write: IOPS=3, BW=59.6KiB/s (60.0kB/s)(6032KiB/101269msec); 0 zone resets clat (msec): min=42, max=877, avg=182.00, stdev=118.36 lat (msec): min=42, max=877, avg=182.01, stdev=118.36 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 67], 10.00th=[ 79], 20.00th=[ 94], | 30.00th=[ 109], 40.00th=[ 125], 50.00th=[ 144], 60.00th=[ 171], | 70.00th=[ 203], 80.00th=[ 251], 90.00th=[ 351], 95.00th=[ 409], | 99.00th=[ 592], 99.50th=[ 693], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 26, max= 160, per=26.24%, avg=64.29, stdev=32.97, samples=181 iops : min= 1, max= 10, avg= 3.30, stdev= 2.14, samples=181 lat (msec) : 10=0.13%, 20=4.95%, 50=17.45%, 100=28.39%, 250=36.07% lat (msec) : 500=11.33%, 750=1.56%, 1000=0.13% cpu : usr=0.02%, sys=1.42%, ctx=1498, 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=143285: Sat Aug 8 03:17:31 2026 read: IOPS=3, BW=59.3KiB/s (60.7kB/s)(6032KiB/101754msec) clat (msec): min=9, max=574, avg=80.66, stdev=79.57 lat (msec): min=9, max=574, avg=80.66, stdev=79.57 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 30], | 30.00th=[ 37], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 109], 90.00th=[ 171], 95.00th=[ 243], | 99.00th=[ 384], 99.50th=[ 558], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 26, max= 240, per=31.43%, avg=73.23, stdev=45.93, samples=158 iops : min= 1, max= 15, avg= 3.84, stdev= 2.99, samples=158 write: IOPS=3, BW=61.5KiB/s (62.0kB/s)(6256KiB/101754msec); 0 zone resets clat (msec): min=45, max=823, avg=182.22, stdev=124.71 lat (msec): min=45, max=823, avg=182.22, stdev=124.71 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 90], | 30.00th=[ 104], 40.00th=[ 124], 50.00th=[ 142], 60.00th=[ 171], | 70.00th=[ 197], 80.00th=[ 259], 90.00th=[ 347], 95.00th=[ 439], | 99.00th=[ 642], 99.50th=[ 701], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 22, max= 174, per=27.42%, avg=67.19, stdev=35.17, samples=180 iops : min= 1, max= 10, avg= 3.48, stdev= 2.27, samples=180 lat (msec) : 10=0.26%, 20=3.52%, 50=19.01%, 100=29.17%, 250=35.16% lat (msec) : 500=11.07%, 750=1.69%, 1000=0.13% cpu : usr=0.02%, sys=1.19%, ctx=1495, 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=233KiB/s (239kB/s), 55.0KiB/s-61.8KiB/s (57.3kB/s-63.3kB/s), io=23.4MiB (24.5MB), run=100229-102642msec WRITE: bw=246KiB/s (251kB/s), 59.6KiB/s-63.8KiB/s (60.0kB/s-65.3kB/s), io=24.6MiB (25.8MB), run=100229-102642msec 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=143309: Sat Aug 8 03:17:47 2026 read: IOPS=1, BW=1311KiB/s (1342kB/s)(7168KiB/5468msec) clat (usec): min=1068, max=728348, avg=314649.20, stdev=253375.70 lat (usec): min=1069, max=728349, avg=314653.71, stdev=253379.20 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1074], 10.00th=[ 1074], 20.00th=[154141], | 30.00th=[166724], 40.00th=[166724], 50.00th=[250610], 60.00th=[337642], | 70.00th=[337642], 80.00th=[566232], 90.00th=[725615], 95.00th=[725615], | 99.00th=[725615], 99.50th=[725615], 99.90th=[725615], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 1872, max= 3453, per=66.44%, avg=2282.80, stdev=657.74, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=936KiB/s (959kB/s)(5120KiB/5468msec); 0 zone resets clat (msec): min=239, max=1312, avg=641.13, stdev=405.83 lat (msec): min=239, max=1314, avg=641.58, stdev=406.62 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1872, max= 2043, per=41.18%, avg=1981.00, stdev=78.19, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=8.33%, 250=25.00%, 500=25.00%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=11.94%, ctx=256, 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=143310: Sat Aug 8 03:17:47 2026 read: IOPS=0, BW=381KiB/s (390kB/s)(2048KiB/5379msec) clat (msec): min=220, max=669, avg=445.29, stdev=317.30 lat (msec): min=220, max=669, avg=445.29, stdev=317.30 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1620, max= 2003, per=52.72%, avg=1811.50, stdev=270.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1904KiB/s (1949kB/s)(10.0MiB/5379msec); 0 zone resets clat (msec): min=98, max=1057, avg=427.44, stdev=364.87 lat (msec): min=98, max=1058, avg=428.22, stdev=364.23 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 113], | 30.00th=[ 121], 40.00th=[ 123], 50.00th=[ 292], 60.00th=[ 317], | 70.00th=[ 439], 80.00th=[ 827], 90.00th=[ 894], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 1872, max= 4087, per=62.08%, avg=2986.67, stdev=1138.22, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.65%, ctx=164, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143311: Sat Aug 8 03:17:47 2026 read: IOPS=1, BW=1193KiB/s (1221kB/s)(6144KiB/5152msec) clat (msec): min=75, max=425, avg=272.35, stdev=151.33 lat (msec): min=75, max=425, avg=272.35, stdev=151.33 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 376], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 1872, max= 4055, per=72.05%, avg=2475.75, stdev=1054.32, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1193KiB/s (1221kB/s)(6144KiB/5152msec); 0 zone resets clat (msec): min=257, max=1014, avg=548.99, stdev=267.10 lat (msec): min=259, max=1014, avg=550.13, stdev=267.08 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 584], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1969, max= 4079, per=52.30%, avg=2516.00, stdev=1042.55, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=6.79%, ctx=110, 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=143312: Sat Aug 8 03:17:47 2026 read: IOPS=0, BW=859KiB/s (880kB/s)(5120KiB/5959msec) clat (usec): min=474, max=900291, avg=252280.44, stdev=393661.57 lat (usec): min=475, max=900292, avg=252281.34, stdev=393661.64 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 474], | 30.00th=[ 1532], 40.00th=[ 1532], 50.00th=[ 1926], 60.00th=[ 1926], | 70.00th=[358613], 80.00th=[358613], 90.00th=[901776], 95.00th=[901776], | 99.00th=[901776], 99.50th=[901776], 99.90th=[901776], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 1872, max= 6011, per=100.00%, avg=3941.50, stdev=2926.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1203KiB/s (1232kB/s)(7168KiB/5959msec); 0 zone resets clat (msec): min=107, max=1511, avg=634.06, stdev=460.81 lat (msec): min=107, max=1511, avg=634.44, stdev=460.88 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 234], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 625], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 776], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 2027, max= 3946, per=61.63%, avg=2965.25, stdev=1077.21, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33% lat (msec) : 2=16.67%, 250=16.67%, 500=16.67%, 750=16.67%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.08%, sys=7.27%, ctx=119, 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=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=3437KiB/s (3519kB/s), 381KiB/s-1311KiB/s (390kB/s-1342kB/s), io=20.0MiB (20.0MB), run=5152-5959msec WRITE: bw=4812KiB/s (4927kB/s), 936KiB/s-1904KiB/s (959kB/s-1949kB/s), io=28.0MiB (29.4MB), run=5152-5959msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143314: Sat Aug 8 03:17:50 2026 read: IOPS=1, BW=1079KiB/s (1105kB/s)(7168KiB/6645msec) clat (msec): min=232, max=748, avg=474.76, stdev=221.98 lat (msec): min=232, max=748, avg=474.77, stdev=221.98 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 241], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 456], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 726], 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= 1885, max= 2043, per=68.56%, avg=1983.33, stdev=55.36, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=771KiB/s (789kB/s)(5120KiB/6645msec); 0 zone resets clat (msec): min=181, max=1158, avg=616.41, stdev=402.72 lat (msec): min=181, max=1158, avg=616.56, stdev=402.73 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1709, max= 4063, per=60.73%, avg=2459.50, stdev=1079.86, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=25.00%, 500=25.00%, 750=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=1.90%, ctx=57, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143315: Sat Aug 8 03:17:50 2026 read: IOPS=0, BW=292KiB/s (299kB/s)(2048KiB/7015msec) clat (msec): min=132, max=701, avg=417.47, stdev=402.30 lat (msec): min=132, max=701, avg=417.47, stdev=402.30 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 133], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1996, max= 2031, per=69.60%, avg=2013.50, stdev=24.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1460KiB/s (1495kB/s)(10.0MiB/7015msec); 0 zone resets clat (msec): min=175, max=1514, avg=599.71, stdev=391.24 lat (msec): min=176, max=1514, avg=599.83, stdev=391.25 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 271], | 30.00th=[ 330], 40.00th=[ 372], 50.00th=[ 493], 60.00th=[ 584], | 70.00th=[ 592], 80.00th=[ 785], 90.00th=[ 885], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 1709, max= 4087, per=62.82%, avg=2544.29, stdev=1051.90, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=16.67%, 500=33.33%, 750=25.00%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=2.94%, ctx=66, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143316: Sat Aug 8 03:17:50 2026 read: IOPS=1, BW=1061KiB/s (1087kB/s)(6144KiB/5790msec) clat (msec): min=167, max=622, avg=342.19, stdev=171.86 lat (msec): min=167, max=622, avg=342.20, stdev=171.86 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 257], 50.00th=[ 257], 60.00th=[ 355], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2023, max= 3419, per=82.16%, avg=2377.00, stdev=694.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1061KiB/s (1087kB/s)(6144KiB/5790msec); 0 zone resets clat (msec): min=197, max=825, avg=584.94, stdev=211.18 lat (msec): min=197, max=826, avg=585.23, stdev=211.37 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 659], | 70.00th=[ 667], 80.00th=[ 667], 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= 1885, max= 2043, per=49.04%, avg=1986.20, stdev=62.60, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=25.00%, 750=41.67%, 1000=8.33% cpu : usr=0.05%, sys=3.40%, ctx=70, 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=143317: Sat Aug 8 03:17:50 2026 read: IOPS=0, BW=723KiB/s (741kB/s)(5120KiB/7079msec) clat (msec): min=47, max=281, avg=177.71, stdev=88.04 lat (msec): min=47, max=281, avg=177.71, stdev=88.04 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 48], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 1988, max= 4063, per=93.17%, avg=2695.33, stdev=1184.67, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=1013KiB/s (1037kB/s)(7168KiB/7079msec); 0 zone resets clat (msec): min=218, max=2078, avg=855.73, stdev=612.08 lat (msec): min=218, max=2078, avg=855.89, stdev=612.05 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 550], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 600], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 1183], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 1885, max= 2043, per=49.31%, avg=1997.00, stdev=61.58, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 50=8.33%, 250=33.33%, 500=8.33%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.32%, ctx=51, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2893KiB/s (2962kB/s), 292KiB/s-1079KiB/s (299kB/s-1105kB/s), io=20.0MiB (20.0MB), run=5790-7079msec WRITE: bw=4050KiB/s (4147kB/s), 771KiB/s-1460KiB/s (789kB/s-1495kB/s), io=28.0MiB (29.4MB), run=5790-7079msec 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=143324: Sat Aug 8 03:18:09 2026 read: IOPS=0, BW=1601KiB/s (1639kB/s)(12.0MiB/7677msec) clat (msec): min=1561, max=3906, avg=2407.98, stdev=1301.03 lat (msec): min=1561, max=3906, avg=2407.98, stdev=1301.03 clat percentiles (msec): | 1.00th=[ 1569], 5.00th=[ 1569], 10.00th=[ 1569], 20.00th=[ 1569], | 30.00th=[ 1569], 40.00th=[ 1754], 50.00th=[ 1754], 60.00th=[ 1754], | 70.00th=[ 3910], 80.00th=[ 3910], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 7013, max= 7742, per=100.00%, avg=7377.50, stdev=515.48, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.01%, sys=6.72%, ctx=660, 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=143325: Sat Aug 8 03:18:09 2026 read: IOPS=0, BW=415KiB/s (425kB/s)(4096KiB/9861msec) clat (nsec): min=4493.4M, max=4493.4M, avg=4493402299.00, stdev= 0.00 lat (nsec): min=4493.4M, max=4493.4M, avg=4493405246.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4463], 5.00th=[ 4463], 10.00th=[ 4463], 20.00th=[ 4463], | 30.00th=[ 4463], 40.00th=[ 4463], 50.00th=[ 4463], 60.00th=[ 4463], | 70.00th=[ 4463], 80.00th=[ 4463], 90.00th=[ 4463], 95.00th=[ 4463], | 99.00th=[ 4463], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4463], | 99.99th=[ 4463] bw ( KiB/s): min= 7074, max= 7074, per=100.00%, avg=7074.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=831KiB/s (851kB/s)(8192KiB/9861msec); 0 zone resets clat (msec): min=2011, max=3127, avg=2569.06, stdev=789.17 lat (msec): min=2024, max=3130, avg=2577.22, stdev=781.75 clat percentiles (msec): | 1.00th=[ 2005], 5.00th=[ 2005], 10.00th=[ 2005], 20.00th=[ 2005], | 30.00th=[ 2005], 40.00th=[ 2005], 50.00th=[ 2005], 60.00th=[ 3138], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : >=2000=100.00% cpu : usr=0.09%, sys=3.46%, ctx=168, 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=143326: Sat Aug 8 03:18:09 2026 write: IOPS=0, BW=1784KiB/s (1827kB/s)(12.0MiB/6888msec); 0 zone resets clat (msec): min=1011, max=3474, avg=2231.28, stdev=1231.70 lat (msec): min=1011, max=3474, avg=2231.68, stdev=1231.57 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 2198], 50.00th=[ 2198], 60.00th=[ 2198], | 70.00th=[ 3473], 80.00th=[ 3473], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 7074, max= 8175, per=100.00%, avg=7624.50, stdev=778.52, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.61%, sys=4.63%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143327: Sat Aug 8 03:18:09 2026 write: IOPS=0, BW=1493KiB/s (1529kB/s)(12.0MiB/8228msec); 0 zone resets clat (msec): min=551, max=3989, avg=2700.95, stdev=1873.42 lat (msec): min=552, max=3990, avg=2701.98, stdev=1873.69 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 3574], 50.00th=[ 3574], 60.00th=[ 3574], | 70.00th=[ 3977], 80.00th=[ 3977], 90.00th=[ 3977], 95.00th=[ 3977], | 99.00th=[ 3977], 99.50th=[ 3977], 99.90th=[ 3977], 99.95th=[ 3977], | 99.99th=[ 3977] bw ( KiB/s): min= 7013, max= 8000, per=100.00%, avg=7506.50, stdev=697.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.56%, 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=1661KiB/s (1701kB/s), 415KiB/s-1601KiB/s (425kB/s-1639kB/s), io=16.0MiB (16.8MB), run=7677-9861msec WRITE: bw=3323KiB/s (3403kB/s), 831KiB/s-1784KiB/s (851kB/s-1827kB/s), io=32.0MiB (33.6MB), run=6888-9861msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143329: Sat Aug 8 03:18:10 2026 read: IOPS=0, BW=1582KiB/s (1620kB/s)(12.0MiB/7766msec) clat (msec): min=1006, max=3951, avg=2576.44, stdev=1481.93 lat (msec): min=1006, max=3951, avg=2576.44, stdev=1481.93 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 2769], 50.00th=[ 2769], 60.00th=[ 2769], | 70.00th=[ 3943], 80.00th=[ 3943], 90.00th=[ 3943], 95.00th=[ 3943], | 99.00th=[ 3943], 99.50th=[ 3943], 99.90th=[ 3943], 99.95th=[ 3943], | 99.99th=[ 3943] bw ( KiB/s): min= 8031, max= 8175, per=100.00%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.29%, ctx=46, 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=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=143330: Sat Aug 8 03:18:10 2026 read: IOPS=0, BW=439KiB/s (450kB/s)(4096KiB/9321msec) clat (nsec): min=4653.2M, max=4653.2M, avg=4653231484.00, stdev= 0.00 lat (nsec): min=4653.2M, max=4653.2M, avg=4653234188.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4665], 5.00th=[ 4665], 10.00th=[ 4665], 20.00th=[ 4665], | 30.00th=[ 4665], 40.00th=[ 4665], 50.00th=[ 4665], 60.00th=[ 4665], | 70.00th=[ 4665], 80.00th=[ 4665], 90.00th=[ 4665], 95.00th=[ 4665], | 99.00th=[ 4665], 99.50th=[ 4665], 99.90th=[ 4665], 99.95th=[ 4665], | 99.99th=[ 4665] 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=879KiB/s (900kB/s)(8192KiB/9321msec); 0 zone resets clat (msec): min=1912, max=2750, avg=2331.48, stdev=592.93 lat (msec): min=1913, max=2750, avg=2331.99, stdev=592.52 clat percentiles (msec): | 1.00th=[ 1905], 5.00th=[ 1905], 10.00th=[ 1905], 20.00th=[ 1905], | 30.00th=[ 1905], 40.00th=[ 1905], 50.00th=[ 1905], 60.00th=[ 2735], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.02%, sys=1.44%, ctx=43, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143331: Sat Aug 8 03:18:10 2026 write: IOPS=0, BW=1405KiB/s (1439kB/s)(12.0MiB/8747msec); 0 zone resets clat (msec): min=649, max=5707, avg=2913.18, stdev=2570.70 lat (msec): min=651, max=5709, avg=2914.83, stdev=2570.77 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 2400], 50.00th=[ 2400], 60.00th=[ 2400], | 70.00th=[ 5738], 80.00th=[ 5738], 90.00th=[ 5738], 95.00th=[ 5738], | 99.00th=[ 5738], 99.50th=[ 5738], 99.90th=[ 5738], 99.95th=[ 5738], | 99.99th=[ 5738] bw ( KiB/s): min= 8094, max= 8110, per=100.00%, avg=8102.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.06%, sys=2.09%, ctx=40, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143332: Sat Aug 8 03:18:10 2026 write: IOPS=0, BW=1533KiB/s (1570kB/s)(12.0MiB/8015msec); 0 zone resets clat (msec): min=522, max=4769, avg=2670.36, stdev=2124.08 lat (msec): min=523, max=4770, avg=2670.88, stdev=2123.94 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 2735], 50.00th=[ 2735], 60.00th=[ 2735], | 70.00th=[ 4799], 80.00th=[ 4799], 90.00th=[ 4799], 95.00th=[ 4799], | 99.00th=[ 4799], 99.50th=[ 4799], 99.90th=[ 4799], 99.95th=[ 4799], | 99.99th=[ 4799] bw ( KiB/s): min= 8015, max= 8175, per=100.00%, avg=8095.00, stdev=113.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.02%, ctx=30, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1758KiB/s (1800kB/s), 439KiB/s-1582KiB/s (450kB/s-1620kB/s), io=16.0MiB (16.8MB), run=7766-9321msec WRITE: bw=3516KiB/s (3600kB/s), 879KiB/s-1533KiB/s (900kB/s-1570kB/s), io=32.0MiB (33.6MB), run=8015-9321msec