== sanity test 398b: DIO and buffer IO race ============== 09:25:36 (1786109136) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.00991 s, 12.6 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179418: Fri Aug 7 09:27:11 2026 read: IOPS=18, BW=73.0KiB/s (75.8kB/s)(5992KiB/81000msec) clat (usec): min=35, max=587627, avg=29409.99, stdev=23076.78 lat (usec): min=36, max=587629, avg=29411.56, stdev=23077.08 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 9110], 10.00th=[ 11863], 20.00th=[ 15270], | 30.00th=[ 18220], 40.00th=[ 21627], 50.00th=[ 25297], 60.00th=[ 29230], | 70.00th=[ 34341], 80.00th=[ 41157], 90.00th=[ 51643], 95.00th=[ 61080], | 99.00th=[ 98042], 99.50th=[104334], 99.90th=[168821], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 17, max= 150, per=25.07%, avg=73.45, stdev=24.44, samples=160 iops : min= 4, max= 37, avg=17.83, stdev= 6.17, samples=160 write: IOPS=19, BW=77.7KiB/s (79.6kB/s)(6296KiB/81000msec); 0 zone resets clat (usec): min=781, max=182062, avg=23360.67, stdev=22404.67 lat (usec): min=782, max=182062, avg=23368.90, stdev=22413.25 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1434], 10.00th=[ 2008], 20.00th=[ 3523], | 30.00th=[ 6652], 40.00th=[ 13566], 50.00th=[ 18482], 60.00th=[ 23725], | 70.00th=[ 29230], 80.00th=[ 39060], 90.00th=[ 53740], 95.00th=[ 64226], | 99.00th=[ 94897], 99.50th=[121111], 99.90th=[166724], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 5, max= 184, per=25.20%, avg=77.36, stdev=28.53, samples=160 iops : min= 1, max= 46, avg=18.81, stdev= 7.18, samples=160 lat (usec) : 50=0.16%, 100=0.98%, 250=0.10%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=5.08%, 4=5.70%, 10=8.72%, 20=23.31%, 50=44.43% lat (msec) : 100=10.38%, 250=0.85%, 750=0.03% cpu : usr=0.10%, sys=8.67%, ctx=7262, 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=179419: Fri Aug 7 09:27:11 2026 read: IOPS=18, BW=73.2KiB/s (74.0kB/s)(5940KiB/81132msec) clat (usec): min=41, max=555479, avg=30820.74, stdev=24445.63 lat (usec): min=42, max=555480, avg=30821.95, stdev=24445.64 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 9634], 10.00th=[ 12518], 20.00th=[ 15926], | 30.00th=[ 19268], 40.00th=[ 22414], 50.00th=[ 26084], 60.00th=[ 30540], | 70.00th=[ 34866], 80.00th=[ 42206], 90.00th=[ 54264], 95.00th=[ 65274], | 99.00th=[107480], 99.50th=[115868], 99.90th=[200279], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 5, max= 152, per=24.81%, avg=72.69, stdev=24.12, samples=160 iops : min= 1, max= 38, avg=17.63, stdev= 6.08, samples=160 write: IOPS=19, BW=78.2KiB/s (80.1kB/s)(6348KiB/81132msec); 0 zone resets clat (usec): min=851, max=162202, avg=22192.20, stdev=21139.69 lat (usec): min=852, max=162203, avg=22202.29, stdev=21136.12 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1385], 10.00th=[ 1844], 20.00th=[ 3195], | 30.00th=[ 5276], 40.00th=[ 11731], 50.00th=[ 17171], 60.00th=[ 22938], | 70.00th=[ 29230], 80.00th=[ 37487], 90.00th=[ 51119], 95.00th=[ 62653], | 99.00th=[ 89654], 99.50th=[103285], 99.90th=[149947], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 11, max= 192, per=25.23%, avg=77.45, stdev=29.42, samples=160 iops : min= 2, max= 48, avg=18.83, stdev= 7.44, samples=160 lat (usec) : 50=0.26%, 100=0.85%, 250=0.36%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.33% lat (msec) : 2=5.63%, 4=6.87%, 10=7.65%, 20=22.53%, 50=43.75% lat (msec) : 100=10.58%, 250=0.98%, 750=0.03% cpu : usr=0.10%, sys=8.66%, ctx=7087, 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=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=179420: Fri Aug 7 09:27:11 2026 read: IOPS=18, BW=73.8KiB/s (75.5kB/s)(6028KiB/81704msec) clat (usec): min=38, max=171065, avg=28643.10, stdev=17408.66 lat (usec): min=39, max=171067, avg=28651.61, stdev=17406.32 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 9241], 10.00th=[ 11731], 20.00th=[ 15139], | 30.00th=[ 18744], 40.00th=[ 21627], 50.00th=[ 25822], 60.00th=[ 29492], | 70.00th=[ 33817], 80.00th=[ 39584], 90.00th=[ 50070], 95.00th=[ 58459], | 99.00th=[ 89654], 99.50th=[107480], 99.90th=[141558], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 15, max= 168, per=25.08%, avg=73.49, stdev=25.50, samples=160 iops : min= 3, max= 42, avg=17.84, stdev= 6.45, samples=160 write: IOPS=19, BW=76.6KiB/s (78.5kB/s)(6260KiB/81704msec); 0 zone resets clat (usec): min=854, max=566794, avg=24540.63, stdev=26970.42 lat (usec): min=856, max=566796, avg=24546.86, stdev=26972.70 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1450], 10.00th=[ 2089], 20.00th=[ 3654], | 30.00th=[ 7177], 40.00th=[ 12649], 50.00th=[ 18482], 60.00th=[ 23462], | 70.00th=[ 31589], 80.00th=[ 40109], 90.00th=[ 56361], 95.00th=[ 70779], | 99.00th=[ 98042], 99.50th=[124257], 99.90th=[189793], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 11, max= 176, per=24.64%, avg=75.64, stdev=28.51, samples=161 iops : min= 2, max= 44, avg=18.37, stdev= 7.20, samples=161 lat (usec) : 50=0.16%, 100=1.30%, 250=0.20%, 500=0.03%, 1000=0.13% lat (msec) : 2=4.56%, 4=6.38%, 10=8.37%, 20=23.50%, 50=44.08% lat (msec) : 100=10.55%, 250=0.72%, 750=0.03% cpu : usr=0.09%, sys=8.71%, ctx=7360, 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=179421: Fri Aug 7 09:27:11 2026 read: IOPS=18, BW=74.8KiB/s (76.6kB/s)(6052KiB/80911msec) clat (usec): min=34, max=161181, avg=29398.83, stdev=19458.96 lat (usec): min=35, max=161182, avg=29400.23, stdev=19458.92 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 7504], 10.00th=[ 11600], 20.00th=[ 15795], | 30.00th=[ 18744], 40.00th=[ 22152], 50.00th=[ 25560], 60.00th=[ 29492], | 70.00th=[ 34341], 80.00th=[ 41157], 90.00th=[ 51119], 95.00th=[ 62653], | 99.00th=[106431], 99.50th=[125305], 99.90th=[158335], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 23, max= 168, per=25.60%, avg=75.01, stdev=22.70, samples=159 iops : min= 5, max= 42, avg=18.20, stdev= 5.72, samples=159 write: IOPS=19, BW=77.1KiB/s (78.9kB/s)(6236KiB/80911msec); 0 zone resets clat (usec): min=884, max=569671, avg=23296.92, stdev=26217.47 lat (usec): min=885, max=569672, avg=23299.56, stdev=26217.53 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1401], 10.00th=[ 1975], 20.00th=[ 3359], | 30.00th=[ 5932], 40.00th=[ 11207], 50.00th=[ 17433], 60.00th=[ 22938], | 70.00th=[ 30278], 80.00th=[ 39060], 90.00th=[ 53740], 95.00th=[ 67634], | 99.00th=[105382], 99.50th=[113771], 99.90th=[152044], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 15, max= 207, per=24.93%, avg=76.55, stdev=28.82, samples=160 iops : min= 3, max= 51, avg=18.60, stdev= 7.27, samples=160 lat (usec) : 50=0.55%, 100=1.07%, 250=0.26%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.11%, 4=6.71%, 10=8.56%, 20=21.71%, 50=44.43% lat (msec) : 100=10.12%, 250=1.07%, 750=0.03% cpu : usr=0.10%, sys=8.62%, ctx=7053, 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=294KiB/s (301kB/s), 73.2KiB/s-74.8KiB/s (74.0kB/s-76.6kB/s), io=23.4MiB (24.6MB), run=80911-81704msec WRITE: bw=308KiB/s (315kB/s), 76.6KiB/s-78.2KiB/s (78.5kB/s-80.1kB/s), io=24.6MiB (25.7MB), run=80911-81704msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179413: Fri Aug 7 09:27:33 2026 read: IOPS=14, BW=58.1KiB/s (59.5kB/s)(5992KiB/103160msec) clat (msec): min=3, max=675, avg=27.33, stdev=28.90 lat (msec): min=3, max=675, avg=27.34, stdev=28.91 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 61], 95.00th=[ 77], | 99.00th=[ 116], 99.50th=[ 136], 99.90th=[ 161], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 200, per=25.38%, avg=58.64, stdev=40.37, samples=201 iops : min= 1, max= 50, avg=14.10, stdev=10.16, samples=201 write: IOPS=15, BW=61.0KiB/s (62.5kB/s)(6296KiB/103160msec); 0 zone resets clat (msec): min=7, max=216, avg=39.34, stdev=28.92 lat (msec): min=7, max=216, avg=39.35, stdev=28.92 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 59], 90.00th=[ 77], 95.00th=[ 96], | 99.00th=[ 140], 99.50th=[ 174], 99.90th=[ 213], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 15, max= 176, per=25.20%, avg=60.98, stdev=37.87, samples=203 iops : min= 3, max= 44, avg=14.68, stdev= 9.55, samples=203 lat (msec) : 4=0.03%, 10=10.25%, 20=29.72%, 50=39.97%, 100=16.86% lat (msec) : 250=3.12%, 750=0.03% cpu : usr=0.08%, sys=3.81%, ctx=5064, 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=179414: Fri Aug 7 09:27:33 2026 read: IOPS=14, BW=57.4KiB/s (58.8kB/s)(5940KiB/103511msec) clat (msec): min=3, max=654, avg=27.06, stdev=29.29 lat (msec): min=3, max=654, avg=27.06, stdev=29.29 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 61], 95.00th=[ 78], | 99.00th=[ 130], 99.50th=[ 144], 99.90th=[ 190], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 184, per=24.82%, avg=57.33, stdev=40.96, samples=204 iops : min= 1, max= 46, avg=13.77, stdev=10.29, samples=204 write: IOPS=15, BW=61.3KiB/s (62.8kB/s)(6348KiB/103511msec); 0 zone resets clat (msec): min=7, max=289, avg=39.73, stdev=29.47 lat (msec): min=7, max=289, avg=39.73, stdev=29.47 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 59], 90.00th=[ 79], 95.00th=[ 96], | 99.00th=[ 138], 99.50th=[ 178], 99.90th=[ 220], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 192, per=25.28%, avg=61.17, stdev=38.38, samples=204 iops : min= 1, max= 48, avg=14.74, stdev= 9.67, samples=204 lat (msec) : 4=0.03%, 10=11.69%, 20=29.79%, 50=38.35%, 100=16.83% lat (msec) : 250=3.26%, 500=0.03%, 750=0.03% cpu : usr=0.06%, sys=3.85%, ctx=5127, 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=179415: Fri Aug 7 09:27:33 2026 read: IOPS=14, BW=58.2KiB/s (59.6kB/s)(6028KiB/103543msec) clat (msec): min=3, max=174, avg=27.78, stdev=24.24 lat (msec): min=3, max=174, avg=27.78, stdev=24.24 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 61], 95.00th=[ 81], | 99.00th=[ 117], 99.50th=[ 131], 99.90th=[ 157], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 7, max= 191, per=25.27%, avg=58.37, stdev=38.67, samples=203 iops : min= 1, max= 47, avg=14.03, stdev= 9.74, samples=203 write: IOPS=15, BW=60.5KiB/s (61.9kB/s)(6260KiB/103543msec); 0 zone resets clat (msec): min=6, max=670, avg=39.23, stdev=32.64 lat (msec): min=6, max=670, avg=39.24, stdev=32.64 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 75], 95.00th=[ 90], | 99.00th=[ 142], 99.50th=[ 192], 99.90th=[ 284], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 200, per=25.07%, avg=60.67, stdev=39.10, samples=203 iops : min= 1, max= 50, avg=14.61, stdev= 9.84, samples=203 lat (msec) : 4=0.07%, 10=9.60%, 20=30.57%, 50=39.71%, 100=17.38% lat (msec) : 250=2.60%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=3.94%, ctx=5327, 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=179416: Fri Aug 7 09:27:33 2026 read: IOPS=14, BW=58.4KiB/s (59.8kB/s)(6052KiB/103616msec) clat (msec): min=3, max=272, avg=26.99, stdev=25.57 lat (msec): min=3, max=272, avg=26.99, stdev=25.57 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 41], 90.00th=[ 59], 95.00th=[ 79], | 99.00th=[ 130], 99.50th=[ 148], 99.90th=[ 205], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 208, per=25.58%, avg=59.08, stdev=39.75, samples=201 iops : min= 1, max= 52, avg=14.21, stdev=10.01, samples=201 write: IOPS=15, BW=60.2KiB/s (61.6kB/s)(6236KiB/103616msec); 0 zone resets clat (msec): min=6, max=666, avg=40.10, stdev=32.43 lat (msec): min=6, max=666, avg=40.10, stdev=32.43 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 60], 90.00th=[ 77], 95.00th=[ 94], | 99.00th=[ 144], 99.50th=[ 161], 99.90th=[ 234], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 176, per=24.78%, avg=59.97, stdev=37.75, samples=204 iops : min= 1, max= 44, avg=14.43, stdev= 9.51, samples=204 lat (msec) : 4=0.03%, 10=11.17%, 20=30.05%, 50=37.76%, 100=17.81% lat (msec) : 250=3.12%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=3.85%, ctx=5227, 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=232KiB/s (237kB/s), 57.4KiB/s-58.4KiB/s (58.8kB/s-59.8kB/s), io=23.4MiB (24.6MB), run=103160-103616msec WRITE: bw=243KiB/s (248kB/s), 60.2KiB/s-61.3KiB/s (61.6kB/s-62.8kB/s), io=24.6MiB (25.7MB), run=103160-103616msec 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=179459: Fri Aug 7 09:28:31 2026 read: IOPS=7, BW=113KiB/s (116kB/s)(5920KiB/52304msec) clat (usec): min=25, max=727895, avg=73107.08, stdev=68553.29 lat (usec): min=25, max=727895, avg=73129.74, stdev=68543.30 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 64], 10.00th=[ 11076], 20.00th=[ 26084], | 30.00th=[ 36963], 40.00th=[ 48497], 50.00th=[ 60031], 60.00th=[ 71828], | 70.00th=[ 85459], 80.00th=[107480], 90.00th=[141558], 95.00th=[179307], | 99.00th=[350225], 99.50th=[417334], 99.90th=[725615], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 30, max= 317, per=26.01%, avg=118.10, stdev=68.76, samples=97 iops : min= 1, max= 19, avg= 6.59, stdev= 4.34, samples=97 write: IOPS=7, BW=122KiB/s (125kB/s)(6368KiB/52304msec); 0 zone resets clat (usec): min=1267, max=689264, avg=63187.13, stdev=81308.08 lat (usec): min=1269, max=689266, avg=63200.89, stdev=81303.17 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2311], 10.00th=[ 4359], 20.00th=[ 9765], | 30.00th=[ 15926], 40.00th=[ 24249], 50.00th=[ 35914], 60.00th=[ 51119], | 70.00th=[ 71828], 80.00th=[104334], 90.00th=[152044], 95.00th=[200279], | 99.00th=[476054], 99.50th=[641729], 99.90th=[692061], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 30, max= 447, per=26.87%, avg=128.19, stdev=71.50, samples=96 iops : min= 1, max= 27, avg= 7.24, stdev= 4.50, samples=96 lat (usec) : 50=0.78%, 100=2.99%, 250=0.52%, 500=0.13% lat (msec) : 2=1.43%, 4=3.39%, 10=6.12%, 20=10.55%, 50=24.61% lat (msec) : 100=26.95%, 250=19.92%, 500=2.08%, 750=0.52% cpu : usr=0.04%, sys=3.90%, ctx=1803, 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=179460: Fri Aug 7 09:28:31 2026 read: IOPS=6, BW=111KiB/s (114kB/s)(5744KiB/51822msec) clat (usec): min=51, max=948873, avg=78981.73, stdev=84983.50 lat (usec): min=52, max=948875, avg=79013.61, stdev=84977.58 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 90], 10.00th=[ 18482], 20.00th=[ 28967], | 30.00th=[ 40109], 40.00th=[ 50594], 50.00th=[ 60556], 60.00th=[ 76022], | 70.00th=[ 88605], 80.00th=[109577], 90.00th=[149947], 95.00th=[204473], | 99.00th=[396362], 99.50th=[775947], 99.90th=[952108], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 30, max= 383, per=26.31%, avg=119.43, stdev=71.93, samples=93 iops : min= 1, max= 23, avg= 6.69, stdev= 4.53, samples=93 write: IOPS=7, BW=126KiB/s (129kB/s)(6544KiB/51822msec); 0 zone resets clat (usec): min=1525, max=489080, avg=56957.59, stdev=68448.64 lat (usec): min=1528, max=489082, avg=56960.08, stdev=68448.65 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2442], 10.00th=[ 3949], 20.00th=[ 8455], | 30.00th=[ 16909], 40.00th=[ 24249], 50.00th=[ 34341], 60.00th=[ 44303], | 70.00th=[ 62129], 80.00th=[ 91751], 90.00th=[137364], 95.00th=[187696], | 99.00th=[308282], 99.50th=[408945], 99.90th=[488637], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 26, max= 479, per=27.89%, avg=133.02, stdev=83.74, samples=95 iops : min= 1, max= 29, avg= 7.53, stdev= 5.27, samples=95 lat (usec) : 100=2.34%, 250=0.13%, 500=0.13% lat (msec) : 2=1.82%, 4=3.65%, 10=6.12%, 20=9.38%, 50=29.17% lat (msec) : 100=27.34%, 250=17.71%, 500=1.82%, 750=0.13%, 1000=0.26% cpu : usr=0.04%, sys=3.75%, ctx=1737, 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=179461: Fri Aug 7 09:28:31 2026 read: IOPS=7, BW=119KiB/s (121kB/s)(6256KiB/52732msec) clat (usec): min=42, max=855129, avg=72400.04, stdev=72514.38 lat (usec): min=43, max=855130, avg=72401.43, stdev=72514.46 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 310], 20.00th=[ 28967], | 30.00th=[ 37487], 40.00th=[ 46924], 50.00th=[ 57410], 60.00th=[ 68682], | 70.00th=[ 85459], 80.00th=[105382], 90.00th=[139461], 95.00th=[173016], | 99.00th=[337642], 99.50th=[517997], 99.90th=[851444], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 26, max= 383, per=26.86%, avg=121.94, stdev=66.00, samples=99 iops : min= 1, max= 23, avg= 6.83, stdev= 4.13, samples=99 write: IOPS=7, BW=114KiB/s (117kB/s)(6032KiB/52732msec); 0 zone resets clat (usec): min=1359, max=560896, avg=64181.37, stdev=76205.54 lat (usec): min=1361, max=560898, avg=64338.72, stdev=76208.99 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2573], 10.00th=[ 4883], 20.00th=[ 9765], | 30.00th=[ 18482], 40.00th=[ 27395], 50.00th=[ 36963], 60.00th=[ 52691], | 70.00th=[ 70779], 80.00th=[101188], 90.00th=[147850], 95.00th=[231736], | 99.00th=[354419], 99.50th=[459277], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 22, max= 383, per=24.94%, avg=118.95, stdev=75.18, samples=98 iops : min= 1, max= 23, avg= 6.65, stdev= 4.73, samples=98 lat (usec) : 50=0.39%, 100=4.30%, 250=0.26%, 500=0.39% lat (msec) : 2=1.30%, 4=2.73%, 10=5.86%, 20=7.16%, 50=27.21% lat (msec) : 100=29.04%, 250=18.75%, 500=2.21%, 750=0.26%, 1000=0.13% cpu : usr=0.03%, sys=4.25%, ctx=1714, 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=179462: Fri Aug 7 09:28:31 2026 read: IOPS=7, BW=117KiB/s (120kB/s)(6032KiB/51370msec) clat (usec): min=39, max=351047, avg=75122.02, stdev=62325.74 lat (usec): min=39, max=351049, avg=75124.53, stdev=62324.45 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 1467], 20.00th=[ 29230], | 30.00th=[ 39584], 40.00th=[ 52167], 50.00th=[ 61080], 60.00th=[ 74974], | 70.00th=[ 90702], 80.00th=[113771], 90.00th=[141558], 95.00th=[189793], | 99.00th=[320865], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 22, max= 380, per=26.49%, avg=120.27, stdev=70.59, samples=96 iops : min= 1, max= 23, avg= 6.74, stdev= 4.47, samples=96 write: IOPS=7, BW=122KiB/s (125kB/s)(6256KiB/51370msec); 0 zone resets clat (usec): min=1545, max=869008, avg=58578.63, stdev=84864.70 lat (usec): min=1548, max=869009, avg=58581.89, stdev=84864.74 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2057], 10.00th=[ 3359], 20.00th=[ 6456], | 30.00th=[ 12780], 40.00th=[ 21890], 50.00th=[ 33817], 60.00th=[ 46400], | 70.00th=[ 67634], 80.00th=[ 92799], 90.00th=[133694], 95.00th=[168821], | 99.00th=[455082], 99.50th=[742392], 99.90th=[868221], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 28, max= 346, per=26.58%, avg=126.80, stdev=67.61, samples=96 iops : min= 1, max= 21, avg= 7.15, stdev= 4.28, samples=96 lat (usec) : 50=0.13%, 100=4.04%, 250=0.52%, 750=0.13% lat (msec) : 2=2.21%, 4=4.56%, 10=7.29%, 20=7.29%, 50=23.70% lat (msec) : 100=28.13%, 250=19.27%, 500=2.34%, 750=0.26%, 1000=0.13% cpu : usr=0.04%, sys=3.43%, ctx=1746, 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=454KiB/s (465kB/s), 111KiB/s-119KiB/s (114kB/s-121kB/s), io=23.4MiB (24.5MB), run=51370-52732msec WRITE: bw=478KiB/s (489kB/s), 114KiB/s-126KiB/s (117kB/s-129kB/s), io=24.6MiB (25.8MB), run=51370-52732msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179454: Fri Aug 7 09:28:51 2026 read: IOPS=5, BW=81.1KiB/s (83.1kB/s)(5920KiB/72973msec) clat (msec): min=5, max=770, avg=76.04, stdev=77.10 lat (msec): min=5, max=770, avg=76.06, stdev=77.11 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 25], | 30.00th=[ 35], 40.00th=[ 44], 50.00th=[ 57], 60.00th=[ 68], | 70.00th=[ 84], 80.00th=[ 102], 90.00th=[ 163], 95.00th=[ 213], | 99.00th=[ 397], 99.50th=[ 498], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 21, max= 383, per=27.32%, avg=89.60, stdev=61.00, samples=124 iops : min= 1, max= 23, avg= 4.78, stdev= 3.84, samples=124 write: IOPS=5, BW=87.3KiB/s (89.4kB/s)(6368KiB/72973msec); 0 zone resets clat (msec): min=15, max=752, avg=112.49, stdev=100.29 lat (msec): min=15, max=752, avg=112.49, stdev=100.29 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 43], | 30.00th=[ 58], 40.00th=[ 70], 50.00th=[ 84], 60.00th=[ 103], | 70.00th=[ 121], 80.00th=[ 155], 90.00th=[ 222], 95.00th=[ 305], | 99.00th=[ 518], 99.50th=[ 684], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 21, max= 319, per=25.73%, avg=88.76, stdev=60.02, samples=136 iops : min= 1, max= 19, avg= 4.74, stdev= 3.78, samples=136 lat (msec) : 10=0.65%, 20=6.51%, 50=26.30%, 100=35.03%, 250=26.04% lat (msec) : 500=4.82%, 750=0.39%, 1000=0.26% cpu : usr=0.03%, sys=1.32%, ctx=1250, 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=179455: Fri Aug 7 09:28:51 2026 read: IOPS=4, BW=78.7KiB/s (80.6kB/s)(5744KiB/72947msec) clat (msec): min=8, max=652, avg=80.39, stdev=81.63 lat (msec): min=8, max=652, avg=80.40, stdev=81.62 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 27], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 68], | 70.00th=[ 85], 80.00th=[ 116], 90.00th=[ 178], 95.00th=[ 239], | 99.00th=[ 456], 99.50th=[ 468], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 25, max= 319, per=26.43%, avg=86.68, stdev=60.19, samples=126 iops : min= 1, max= 19, avg= 4.60, stdev= 3.80, samples=126 write: IOPS=5, BW=89.7KiB/s (91.9kB/s)(6544KiB/72947msec); 0 zone resets clat (msec): min=9, max=996, avg=107.52, stdev=94.41 lat (msec): min=9, max=996, avg=107.53, stdev=94.41 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 37], 20.00th=[ 48], | 30.00th=[ 55], 40.00th=[ 67], 50.00th=[ 83], 60.00th=[ 94], | 70.00th=[ 120], 80.00th=[ 153], 90.00th=[ 211], 95.00th=[ 292], | 99.00th=[ 472], 99.50th=[ 498], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 21, max= 351, per=27.59%, avg=95.18, stdev=64.79, samples=131 iops : min= 1, max= 21, avg= 5.15, stdev= 4.10, samples=131 lat (msec) : 10=0.52%, 20=5.73%, 50=28.26%, 100=35.68%, 250=24.61% lat (msec) : 500=4.82%, 750=0.26%, 1000=0.13% cpu : usr=0.04%, sys=1.26%, ctx=1267, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179456: Fri Aug 7 09:28:51 2026 read: IOPS=5, BW=85.8KiB/s (87.9kB/s)(6256KiB/72900msec) clat (msec): min=7, max=753, avg=79.05, stdev=86.89 lat (msec): min=7, max=753, avg=79.05, stdev=86.89 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 85], 80.00th=[ 110], 90.00th=[ 155], 95.00th=[ 218], | 99.00th=[ 405], 99.50th=[ 726], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 21, max= 351, per=28.35%, avg=92.99, stdev=65.94, samples=129 iops : min= 1, max= 21, avg= 5.00, stdev= 4.13, samples=129 write: IOPS=5, BW=82.7KiB/s (84.7kB/s)(6032KiB/72900msec); 0 zone resets clat (msec): min=10, max=769, avg=111.23, stdev=93.87 lat (msec): min=10, max=769, avg=111.23, stdev=93.87 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 27], 10.00th=[ 39], 20.00th=[ 50], | 30.00th=[ 61], 40.00th=[ 72], 50.00th=[ 88], 60.00th=[ 101], | 70.00th=[ 118], 80.00th=[ 155], 90.00th=[ 220], 95.00th=[ 271], | 99.00th=[ 489], 99.50th=[ 726], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 28, max= 258, per=25.82%, avg=89.07, stdev=53.40, samples=128 iops : min= 1, max= 16, avg= 4.75, stdev= 3.36, samples=128 lat (msec) : 10=0.52%, 20=5.47%, 50=28.39%, 100=34.38%, 250=25.52% lat (msec) : 500=5.08%, 750=0.39%, 1000=0.26% cpu : usr=0.04%, sys=1.35%, ctx=1208, 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=179457: Fri Aug 7 09:28:51 2026 read: IOPS=5, BW=82.9KiB/s (84.9kB/s)(6032KiB/72755msec) clat (msec): min=8, max=850, avg=79.95, stdev=84.97 lat (msec): min=8, max=850, avg=79.97, stdev=84.97 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 67], | 70.00th=[ 86], 80.00th=[ 115], 90.00th=[ 161], 95.00th=[ 228], | 99.00th=[ 451], 99.50th=[ 684], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 21, max= 255, per=28.30%, avg=92.82, stdev=57.57, samples=124 iops : min= 1, max= 15, avg= 4.98, stdev= 3.64, samples=124 write: IOPS=5, BW=85.0KiB/s (88.1kB/s)(6256KiB/72755msec); 0 zone resets clat (msec): min=10, max=996, avg=108.77, stdev=93.61 lat (msec): min=10, max=996, avg=108.78, stdev=93.61 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 44], | 30.00th=[ 59], 40.00th=[ 70], 50.00th=[ 83], 60.00th=[ 97], | 70.00th=[ 116], 80.00th=[ 153], 90.00th=[ 213], 95.00th=[ 268], | 99.00th=[ 451], 99.50th=[ 567], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 28, max= 255, per=27.19%, avg=93.80, stdev=55.04, samples=128 iops : min= 1, max= 15, avg= 5.05, stdev= 3.49, samples=128 lat (msec) : 10=0.52%, 20=5.08%, 50=29.17%, 100=33.85%, 250=26.56% lat (msec) : 500=4.30%, 750=0.26%, 1000=0.26% cpu : usr=0.03%, sys=1.30%, ctx=1230, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=328KiB/s (336kB/s), 78.7KiB/s-85.8KiB/s (80.6kB/s-87.9kB/s), io=23.4MiB (24.5MB), run=72755-72973msec WRITE: bw=345KiB/s (354kB/s), 82.7KiB/s-89.7KiB/s (84.7kB/s-91.9kB/s), io=24.6MiB (25.8MB), run=72755-72973msec 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=179481: Fri Aug 7 09:29:07 2026 read: IOPS=1, BW=1628KiB/s (1667kB/s)(7168KiB/4403msec) clat (usec): min=528, max=607692, avg=265827.30, stdev=187949.48 lat (usec): min=529, max=607694, avg=265829.03, stdev=187949.59 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[127402], | 30.00th=[242222], 40.00th=[242222], 50.00th=[270533], 60.00th=[274727], | 70.00th=[274727], 80.00th=[337642], 90.00th=[608175], 95.00th=[608175], | 99.00th=[608175], 99.50th=[608175], 99.90th=[608175], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 1715, max= 3946, per=50.67%, avg=2356.60, stdev=899.64, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1163KiB/s (1191kB/s)(5120KiB/4403msec); 0 zone resets clat (msec): min=222, max=964, avg=473.95, stdev=287.99 lat (msec): min=222, max=964, avg=474.03, stdev=287.96 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 2023, max= 4096, per=39.09%, avg=2545.25, stdev=1033.85, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=12.43%, ctx=172, 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=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=179482: Fri Aug 7 09:29:07 2026 read: IOPS=0, BW=498KiB/s (510kB/s)(2048KiB/4110msec) clat (usec): min=570, max=324096, avg=162333.21, stdev=228767.15 lat (usec): min=571, max=324098, avg=162335.21, stdev=228768.37 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 570], 60.00th=[325059], | 70.00th=[325059], 80.00th=[325059], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 1973, max= 2048, per=43.23%, avg=2010.50, stdev=53.03, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2491KiB/s (2551kB/s)(10.0MiB/4110msec); 0 zone resets clat (msec): min=54, max=890, avg=340.40, stdev=286.47 lat (msec): min=54, max=890, avg=340.50, stdev=286.47 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 67], | 30.00th=[ 114], 40.00th=[ 161], 50.00th=[ 201], 60.00th=[ 213], | 70.00th=[ 506], 80.00th=[ 592], 90.00th=[ 609], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 2023, max= 7907, per=55.60%, avg=3620.00, stdev=2557.69, samples=5 iops : min= 1, max= 7, avg= 2.80, stdev= 2.68, samples=5 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=33.33%, 500=8.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=19.52%, ctx=128, 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=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=179483: Fri Aug 7 09:29:07 2026 read: IOPS=1, BW=1752KiB/s (1794kB/s)(6144KiB/3506msec) clat (usec): min=486, max=569002, avg=249138.88, stdev=245572.90 lat (usec): min=487, max=569003, avg=249140.08, stdev=245572.86 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 816], | 30.00th=[ 816], 40.00th=[177210], 50.00th=[177210], 60.00th=[233833], | 70.00th=[513803], 80.00th=[513803], 90.00th=[566232], 95.00th=[566232], | 99.00th=[566232], 99.50th=[566232], 99.90th=[566232], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 2023, max= 2048, per=43.79%, avg=2036.67, stdev=12.66, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 write: IOPS=1, BW=1752KiB/s (1794kB/s)(6144KiB/3506msec); 0 zone resets clat (msec): min=69, max=1254, avg=328.63, stdev=455.41 lat (msec): min=69, max=1254, avg=328.71, stdev=455.42 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 182], | 70.00th=[ 186], 80.00th=[ 186], 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= 2023, max= 3297, per=37.65%, avg=2451.67, stdev=732.10, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.06%, sys=12.55%, ctx=213, 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=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=179484: Fri Aug 7 09:29:07 2026 read: IOPS=1, BW=1618KiB/s (1657kB/s)(5120KiB/3165msec) clat (usec): min=624, max=219794, avg=140869.93, stdev=88852.48 lat (usec): min=626, max=219796, avg=141093.70, stdev=88933.47 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[ 627], | 30.00th=[110625], 40.00th=[110625], 50.00th=[170918], 60.00th=[170918], | 70.00th=[202376], 80.00th=[202376], 90.00th=[219153], 95.00th=[219153], | 99.00th=[219153], 99.50th=[219153], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 2039, max= 6071, per=87.19%, avg=4055.00, stdev=2851.05, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2265KiB/s (2319kB/s)(7168KiB/3165msec); 0 zone resets clat (msec): min=90, max=1127, avg=344.03, stdev=355.13 lat (msec): min=90, max=1127, avg=344.12, stdev=355.13 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 165], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 228], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 342], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 1508, max= 4079, per=37.03%, avg=2411.25, stdev=1138.65, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 2000=8.33% cpu : usr=0.03%, sys=16.69%, ctx=122, 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=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=4651KiB/s (4763kB/s), 498KiB/s-1752KiB/s (510kB/s-1794kB/s), io=20.0MiB (20.0MB), run=3165-4403msec WRITE: bw=6512KiB/s (6668kB/s), 1163KiB/s-2491KiB/s (1191kB/s-2551kB/s), io=28.0MiB (29.4MB), run=3165-4403msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179485: Fri Aug 7 09:29:07 2026 read: IOPS=1, BW=1938KiB/s (1984kB/s)(7168KiB/3699msec) clat (msec): min=135, max=842, avg=310.89, stdev=253.45 lat (msec): min=135, max=842, avg=310.89, stdev=253.45 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 144], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 230], 60.00th=[ 251], | 70.00th=[ 251], 80.00th=[ 414], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1855, max= 4096, per=70.01%, avg=2685.00, stdev=1029.42, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1384KiB/s (1417kB/s)(5120KiB/3699msec); 0 zone resets clat (msec): min=97, max=780, avg=291.72, stdev=278.95 lat (msec): min=97, max=780, avg=291.82, stdev=278.94 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 97], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1855, max= 3976, per=48.91%, avg=2626.33, stdev=1172.82, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 1000=16.67% cpu : usr=0.00%, sys=4.25%, ctx=67, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179486: Fri Aug 7 09:29:07 2026 read: IOPS=0, BW=384KiB/s (393kB/s)(2048KiB/5339msec) clat (msec): min=275, max=543, avg=409.48, stdev=190.14 lat (msec): min=275, max=543, avg=409.48, stdev=190.14 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1988, max= 2048, per=52.62%, avg=2018.00, stdev=42.43, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1918KiB/s (1964kB/s)(10.0MiB/5339msec); 0 zone resets clat (msec): min=112, max=1041, avg=418.66, stdev=352.03 lat (msec): min=112, max=1041, avg=418.76, stdev=352.02 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 134], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 262], 60.00th=[ 338], | 70.00th=[ 439], 80.00th=[ 558], 90.00th=[ 1011], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1988, max= 3976, per=51.13%, avg=2745.60, stdev=1006.35, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 2000=16.67% cpu : usr=0.06%, sys=5.83%, ctx=125, 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=179487: Fri Aug 7 09:29:07 2026 read: IOPS=1, BW=1180KiB/s (1209kB/s)(6144KiB/5205msec) clat (msec): min=106, max=1277, avg=393.26, stdev=441.79 lat (msec): min=106, max=1277, avg=393.27, stdev=441.79 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 128], | 30.00th=[ 128], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 271], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 1988, max= 3976, per=69.35%, avg=2659.67, stdev=1140.06, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1180KiB/s (1209kB/s)(6144KiB/5205msec); 0 zone resets clat (msec): min=66, max=1273, avg=364.40, stdev=453.98 lat (msec): min=66, max=1273, avg=364.51, stdev=453.97 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 226], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1855, max= 4096, per=46.34%, avg=2488.50, stdev=1073.95, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 2000=16.67% cpu : usr=0.00%, sys=4.13%, ctx=76, 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=179488: Fri Aug 7 09:29:07 2026 read: IOPS=0, BW=977KiB/s (1001kB/s)(5120KiB/5239msec) clat (msec): min=67, max=708, avg=402.26, stdev=273.77 lat (msec): min=67, max=708, avg=402.26, stdev=273.77 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 609], 80.00th=[ 609], 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= 1932, max= 2039, per=51.98%, avg=1993.50, stdev=45.99, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1368KiB/s (1401kB/s)(7168KiB/5239msec); 0 zone resets clat (msec): min=77, max=1337, avg=437.29, stdev=426.55 lat (msec): min=77, max=1337, avg=437.43, stdev=426.61 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 218], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 271], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 600], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1855, max= 3976, per=48.91%, avg=2626.33, stdev=1172.82, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=25.00%, 2000=8.33% cpu : usr=0.04%, sys=3.34%, ctx=129, 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=3836KiB/s (3928kB/s), 384KiB/s-1938KiB/s (393kB/s-1984kB/s), io=20.0MiB (20.0MB), run=3699-5339msec WRITE: bw=5370KiB/s (5499kB/s), 1180KiB/s-1918KiB/s (1209kB/s-1964kB/s), io=28.0MiB (29.4MB), run=3699-5339msec 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=179500: Fri Aug 7 09:29:23 2026 read: IOPS=1, BW=4560KiB/s (4669kB/s)(12.0MiB/2695msec) clat (msec): min=708, max=1025, avg=862.53, stdev=158.82 lat (msec): min=708, max=1025, avg=862.53, stdev=158.82 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8000, max= 8143, per=100.00%, avg=8071.50, stdev=101.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.45%, ctx=46, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179501: Fri Aug 7 09:29:23 2026 read: IOPS=0, BW=979KiB/s (1003kB/s)(4096KiB/4183msec) clat (nsec): min=1159.9M, max=1159.9M, avg=1159899628.00, stdev= 0.00 lat (nsec): min=1159.9M, max=1159.9M, avg=1159902393.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1958KiB/s (2005kB/s)(8192KiB/4183msec); 0 zone resets clat (msec): min=1029, max=1932, avg=1480.64, stdev=638.50 lat (msec): min=1033, max=1932, avg=1483.09, stdev=635.54 clat percentiles (msec): | 1.00th=[ 1028], 5.00th=[ 1028], 10.00th=[ 1028], 20.00th=[ 1028], | 30.00th=[ 1028], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1938], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, 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=0.00%, sys=2.58%, ctx=56, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179502: Fri Aug 7 09:29:23 2026 write: IOPS=0, BW=3466KiB/s (3549kB/s)(12.0MiB/3545msec); 0 zone resets clat (msec): min=194, max=1716, avg=1164.83, stdev=842.78 lat (msec): min=195, max=1716, avg=1165.32, stdev=842.82 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 1586], 50.00th=[ 1586], 60.00th=[ 1586], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.68%, ctx=38, 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=179503: Fri Aug 7 09:29:23 2026 write: IOPS=0, BW=3942KiB/s (4037kB/s)(12.0MiB/3117msec); 0 zone resets clat (msec): min=433, max=1780, avg=1006.32, stdev=695.47 lat (msec): min=434, max=1782, avg=1007.29, stdev=696.49 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.06%, sys=4.20%, ctx=45, 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=3917KiB/s (4011kB/s), 979KiB/s-4560KiB/s (1003kB/s-4669kB/s), io=16.0MiB (16.8MB), run=2695-4183msec WRITE: bw=7834KiB/s (8022kB/s), 1958KiB/s-3942KiB/s (2005kB/s-4037kB/s), io=32.0MiB (33.6MB), run=3117-4183msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179496: Fri Aug 7 09:29:23 2026 read: IOPS=1, BW=4830KiB/s (4946kB/s)(12.0MiB/2544msec) clat (msec): min=535, max=1087, avg=822.78, stdev=276.92 lat (msec): min=535, max=1087, avg=822.79, stdev=276.92 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 6311, max= 8062, per=100.00%, avg=7186.50, stdev=1238.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.44%, ctx=179, 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=179497: Fri Aug 7 09:29:23 2026 read: IOPS=0, BW=1078KiB/s (1104kB/s)(4096KiB/3800msec) clat (nsec): min=595690k, max=595690k, avg=595690141.00, stdev= 0.00 lat (nsec): min=595693k, max=595693k, avg=595693099.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] 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=2156KiB/s (2208kB/s)(8192KiB/3800msec); 0 zone resets clat (msec): min=1232, max=1821, avg=1526.72, stdev=416.35 lat (msec): min=1236, max=1822, avg=1529.47, stdev=414.62 clat percentiles (msec): | 1.00th=[ 1234], 5.00th=[ 1234], 10.00th=[ 1234], 20.00th=[ 1234], | 30.00th=[ 1234], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1821], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.71%, ctx=103, 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=179498: Fri Aug 7 09:29:23 2026 write: IOPS=0, BW=2913KiB/s (2983kB/s)(12.0MiB/4218msec); 0 zone resets clat (msec): min=277, max=2519, avg=1339.61, stdev=1126.06 lat (msec): min=277, max=2520, avg=1340.22, stdev=1126.04 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.94%, ctx=50, 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=179499: Fri Aug 7 09:29:23 2026 write: IOPS=0, BW=3520KiB/s (3604kB/s)(12.0MiB/3491msec); 0 zone resets clat (msec): min=328, max=1846, avg=1058.09, stdev=760.61 lat (msec): min=329, max=1847, avg=1058.43, stdev=760.60 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.18%, 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=4312KiB/s (4415kB/s), 1078KiB/s-4830KiB/s (1104kB/s-4946kB/s), io=16.0MiB (16.8MB), run=2544-3800msec WRITE: bw=7769KiB/s (7955kB/s), 2156KiB/s-3520KiB/s (2208kB/s-3604kB/s), io=32.0MiB (33.6MB), run=3491-4218msec