== sanity test 398b: DIO and buffer IO race ============== 07:17:53 (1789384673) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.69058 s, 8.8 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=178283: Mon Sep 14 07:20:08 2026 read: IOPS=12, BW=50.8KiB/s (52.0kB/s)(5992KiB/117996msec) clat (usec): min=33, max=728107, avg=42767.03, stdev=32607.16 lat (usec): min=33, max=728108, avg=42770.61, stdev=32607.36 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 10945], 10.00th=[ 16188], 20.00th=[ 21365], | 30.00th=[ 25822], 40.00th=[ 31065], 50.00th=[ 36963], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[141558], 99.50th=[162530], 99.90th=[295699], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 5, max= 103, per=24.81%, avg=50.36, stdev=18.65, samples=233 iops : min= 1, max= 25, avg=11.94, stdev= 4.69, samples=233 write: IOPS=13, BW=53.4KiB/s (54.6kB/s)(6296KiB/117996msec); 0 zone resets clat (usec): min=1011, max=256108, avg=33979.62, stdev=33769.31 lat (usec): min=1012, max=256108, avg=33984.38, stdev=33768.18 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1450], 10.00th=[ 2089], 20.00th=[ 4047], | 30.00th=[ 7701], 40.00th=[ 17433], 50.00th=[ 25560], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[135267], 99.50th=[160433], 99.90th=[233833], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 15, max= 139, per=24.93%, avg=53.09, stdev=22.07, samples=232 iops : min= 3, max= 34, avg=12.62, stdev= 5.55, samples=232 lat (usec) : 50=0.16%, 100=1.53%, 250=0.29%, 500=0.07%, 750=0.03% lat (msec) : 2=4.52%, 4=5.73%, 10=7.29%, 20=10.71%, 50=40.53% lat (msec) : 100=25.16%, 250=3.87%, 500=0.07%, 750=0.03% cpu : usr=0.09%, sys=5.89%, ctx=6873, 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=178285: Mon Sep 14 07:20:08 2026 read: IOPS=12, BW=51.0KiB/s (53.2kB/s)(5940KiB/114231msec) clat (usec): min=42, max=264993, avg=41963.59, stdev=25936.61 lat (usec): min=43, max=264994, avg=41967.30, stdev=25936.21 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 11207], 10.00th=[ 17695], 20.00th=[ 22152], | 30.00th=[ 26608], 40.00th=[ 32113], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[129500], 99.50th=[143655], 99.90th=[185598], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 5, max= 96, per=25.47%, avg=51.70, stdev=18.45, samples=224 iops : min= 1, max= 24, avg=12.28, stdev= 4.65, samples=224 write: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6348KiB/114231msec); 0 zone resets clat (usec): min=1008, max=701391, avg=32408.89, stdev=36752.89 lat (usec): min=1009, max=701393, avg=32411.12, stdev=36752.97 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1467], 10.00th=[ 2057], 20.00th=[ 4113], | 30.00th=[ 7439], 40.00th=[ 15008], 50.00th=[ 23200], 60.00th=[ 31327], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 76022], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[170918], 99.90th=[227541], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 143, per=25.93%, avg=55.22, stdev=23.10, samples=224 iops : min= 1, max= 35, avg=13.15, stdev= 5.80, samples=224 lat (usec) : 50=0.13%, 100=1.40%, 250=0.23%, 500=0.10%, 1000=0.07% lat (msec) : 2=4.98%, 4=5.37%, 10=7.98%, 20=10.68%, 50=43.13% lat (msec) : 100=22.17%, 250=3.71%, 500=0.03%, 750=0.03% cpu : usr=0.10%, sys=6.06%, ctx=6730, 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=178287: Mon Sep 14 07:20:08 2026 read: IOPS=13, BW=52.5KiB/s (53.8kB/s)(6028KiB/114783msec) clat (usec): min=35, max=310225, avg=41971.06, stdev=28064.25 lat (usec): min=36, max=310227, avg=41974.79, stdev=28064.26 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 8029], 10.00th=[ 16319], 20.00th=[ 21627], | 30.00th=[ 26346], 40.00th=[ 31065], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 58983], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[139461], 99.50th=[175113], 99.90th=[246416], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 101, per=25.84%, avg=52.46, stdev=18.74, samples=224 iops : min= 1, max= 25, avg=12.46, stdev= 4.72, samples=224 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6260KiB/114783msec); 0 zone resets clat (usec): min=982, max=898292, avg=32654.16, stdev=39267.27 lat (usec): min=983, max=898296, avg=32658.77, stdev=39268.07 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1385], 10.00th=[ 1909], 20.00th=[ 3752], | 30.00th=[ 6587], 40.00th=[ 14484], 50.00th=[ 23987], 60.00th=[ 32113], | 70.00th=[ 41681], 80.00th=[ 56361], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[145753], 99.50th=[164627], 99.90th=[227541], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 110, per=25.41%, avg=54.12, stdev=21.38, samples=225 iops : min= 1, max= 27, avg=12.88, stdev= 5.37, samples=225 lat (usec) : 50=0.16%, 100=1.86%, 250=0.29%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.57%, 4=5.21%, 10=7.85%, 20=10.42%, 50=41.73% lat (msec) : 100=22.98%, 250=3.74%, 500=0.03%, 1000=0.03% cpu : usr=0.10%, sys=6.08%, ctx=6660, 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=178289: Mon Sep 14 07:20:08 2026 read: IOPS=13, BW=52.5KiB/s (53.8kB/s)(6052KiB/115215msec) clat (usec): min=35, max=241399, avg=41788.19, stdev=27853.36 lat (usec): min=35, max=241400, avg=41792.58, stdev=27854.40 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 10683], 10.00th=[ 15795], 20.00th=[ 21890], | 30.00th=[ 26346], 40.00th=[ 31327], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 49021], 80.00th=[ 58983], 90.00th=[ 72877], 95.00th=[ 87557], | 99.00th=[149947], 99.50th=[189793], 99.90th=[227541], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 7, max= 112, per=25.71%, avg=52.20, stdev=18.30, samples=225 iops : min= 1, max= 28, avg=12.40, stdev= 4.61, samples=225 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(6236KiB/115215msec); 0 zone resets clat (usec): min=1001, max=857101, avg=33043.17, stdev=39241.92 lat (usec): min=1002, max=857103, avg=33048.54, stdev=39245.70 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1385], 10.00th=[ 1958], 20.00th=[ 4047], | 30.00th=[ 7570], 40.00th=[ 15008], 50.00th=[ 23987], 60.00th=[ 31851], | 70.00th=[ 41681], 80.00th=[ 56886], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[143655], 99.50th=[164627], 99.90th=[291505], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 119, per=25.18%, avg=53.64, stdev=21.04, samples=226 iops : min= 1, max= 29, avg=12.76, stdev= 5.26, samples=226 lat (usec) : 50=0.10%, 100=1.63%, 250=0.13%, 500=0.10%, 750=0.07% lat (msec) : 2=5.21%, 4=4.92%, 10=7.68%, 20=11.43%, 50=42.02% lat (msec) : 100=23.11%, 250=3.52%, 500=0.07%, 1000=0.03% cpu : usr=0.10%, sys=5.98%, ctx=6769, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=203KiB/s (208kB/s), 50.8KiB/s-52.5KiB/s (52.0kB/s-53.8kB/s), io=23.4MiB (24.6MB), run=114231-117996msec WRITE: bw=213KiB/s (218kB/s), 53.4KiB/s-55.6KiB/s (54.6kB/s-56.9kB/s), io=24.6MiB (25.7MB), run=114231-117996msec fio: pid=178288, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=178284: Mon Sep 14 07:20:48 2026 read: IOPS=9, BW=38.2KiB/s (39.2kB/s)(5992KiB/156670msec) clat (msec): min=5, max=711, avg=40.32, stdev=37.22 lat (msec): min=5, max=711, avg=40.32, stdev=37.22 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 85], 95.00th=[ 111], | 99.00th=[ 169], 99.50th=[ 197], 99.90th=[ 228], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 128, per=27.76%, avg=38.87, stdev=24.59, samples=300 iops : min= 1, max= 32, avg= 9.06, stdev= 6.19, samples=300 write: IOPS=10, BW=40.2KiB/s (41.1kB/s)(6296KiB/156670msec); 0 zone resets clat (msec): min=10, max=322, avg=60.91, stdev=41.60 lat (msec): min=10, max=322, avg=60.91, stdev=41.60 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 73], 80.00th=[ 90], 90.00th=[ 116], 95.00th=[ 142], | 99.00th=[ 218], 99.50th=[ 245], 99.90th=[ 296], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 111, per=27.02%, avg=39.72, stdev=23.19, samples=308 iops : min= 1, max= 27, avg= 9.28, stdev= 5.84, samples=308 lat (msec) : 10=2.18%, 20=15.07%, 50=46.58%, 100=25.20%, 250=10.74% lat (msec) : 500=0.20%, 750=0.03% cpu : usr=0.07%, sys=2.11%, ctx=5051, 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=178286: Mon Sep 14 07:20:48 2026 read: IOPS=9, BW=37.7KiB/s (38.6kB/s)(5940KiB/157590msec) clat (msec): min=6, max=811, avg=41.68, stdev=40.00 lat (msec): min=6, max=811, avg=41.68, stdev=40.00 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 174], 99.50th=[ 197], 99.90th=[ 245], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 134, per=27.05%, avg=37.88, stdev=24.85, samples=305 iops : min= 1, max= 33, avg= 8.81, stdev= 6.26, samples=305 write: IOPS=10, BW=40.3KiB/s (41.2kB/s)(6348KiB/157590msec); 0 zone resets clat (msec): min=12, max=412, avg=60.04, stdev=40.90 lat (msec): min=12, max=412, avg=60.04, stdev=40.90 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 58], | 70.00th=[ 71], 80.00th=[ 89], 90.00th=[ 113], 95.00th=[ 136], | 99.00th=[ 205], 99.50th=[ 226], 99.90th=[ 326], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 119, per=27.12%, avg=39.87, stdev=22.97, samples=309 iops : min= 1, max= 29, avg= 9.31, stdev= 5.79, samples=309 lat (msec) : 10=2.12%, 20=14.62%, 50=46.26%, 100=25.52%, 250=11.26% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=2.12%, ctx=5189, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178288: Mon Sep 14 07:20:48 2026 read: IOPS=8, BW=32.0KiB/s (32.8kB/s)(4148KiB/129561msec) clat (msec): min=5, max=297, avg=50.06, stdev=38.97 lat (msec): min=5, max=297, avg=50.06, stdev=38.97 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 78], 90.00th=[ 106], 95.00th=[ 129], | 99.00th=[ 188], 99.50th=[ 205], 99.90th=[ 284], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 118, per=22.66%, avg=31.72, stdev=18.10, samples=252 iops : min= 1, max= 29, avg= 7.25, stdev= 4.54, samples=252 write: IOPS=8, BW=33.9KiB/s (34.7kB/s)(4388KiB/129561msec); 0 zone resets clat (msec): min=13, max=864, avg=70.43, stdev=49.05 lat (msec): min=13, max=864, avg=70.44, stdev=49.05 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 51], 50.00th=[ 59], 60.00th=[ 70], | 70.00th=[ 85], 80.00th=[ 102], 90.00th=[ 125], 95.00th=[ 146], | 99.00th=[ 218], 99.50th=[ 239], 99.90th=[ 414], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 111, per=22.92%, avg=33.70, stdev=18.97, samples=251 iops : min= 1, max= 27, avg= 7.75, stdev= 4.75, samples=251 lat (msec) : 10=0.98%, 20=9.41%, 50=40.98%, 100=32.69%, 250=15.55% lat (msec) : 500=0.28%, 1000=0.05% cpu : usr=0.06%, sys=1.80%, ctx=3080, majf=0, minf=18 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=1038,1097,0,0 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=178290: Mon Sep 14 07:20:48 2026 read: IOPS=9, BW=38.4KiB/s (39.3kB/s)(6052KiB/157774msec) clat (msec): min=5, max=294, avg=42.54, stdev=37.63 lat (msec): min=5, max=294, avg=42.54, stdev=37.63 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 93], 95.00th=[ 121], | 99.00th=[ 180], 99.50th=[ 207], 99.90th=[ 288], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 173, per=27.43%, avg=38.41, stdev=24.99, samples=304 iops : min= 1, max= 43, avg= 8.95, stdev= 6.31, samples=304 write: IOPS=9, BW=39.5KiB/s (40.5kB/s)(6236KiB/157774msec); 0 zone resets clat (msec): min=10, max=854, avg=59.64, stdev=45.20 lat (msec): min=10, max=854, avg=59.65, stdev=45.20 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 68], 80.00th=[ 85], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 205], 99.50th=[ 243], 99.90th=[ 359], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 119, per=26.49%, avg=38.94, stdev=23.35, samples=310 iops : min= 1, max= 29, avg= 9.07, stdev= 5.87, samples=310 lat (msec) : 10=2.12%, 20=15.30%, 50=46.55%, 100=24.77%, 250=11.00% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.08%, sys=2.08%, ctx=5030, 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=140KiB/s (144kB/s), 32.0KiB/s-38.4KiB/s (32.8kB/s-39.3kB/s), io=21.6MiB (22.7MB), run=129561-157774msec WRITE: bw=147KiB/s (151kB/s), 33.9KiB/s-40.3KiB/s (34.7kB/s-41.2kB/s), io=22.7MiB (23.8MB), run=129561-157774msec 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=178340: Mon Sep 14 07:21:38 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36299msec) clat (usec): min=46, max=235548, avg=51719.28, stdev=33268.86 lat (usec): min=47, max=235550, avg=51720.95, stdev=33268.83 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 75], 10.00th=[ 217], 20.00th=[ 27395], | 30.00th=[ 34341], 40.00th=[ 41681], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 62653], 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[164627], 99.50th=[191890], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 410, per=25.92%, avg=162.76, stdev=65.84, samples=71 iops : min= 1, max= 25, avg= 9.38, stdev= 4.15, samples=71 write: IOPS=10, BW=175KiB/s (180kB/s)(6368KiB/36299msec); 0 zone resets clat (usec): min=1544, max=254315, avg=42726.20, stdev=40074.18 lat (usec): min=1547, max=254317, avg=42729.63, stdev=40073.77 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2704], 10.00th=[ 4146], 20.00th=[ 7373], | 30.00th=[ 13960], 40.00th=[ 22676], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 54789], 80.00th=[ 71828], 90.00th=[ 96994], 95.00th=[120062], | 99.00th=[175113], 99.50th=[191890], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 31, max= 383, per=26.59%, avg=175.76, stdev=71.60, samples=71 iops : min= 1, max= 23, avg=10.18, stdev= 4.51, samples=71 lat (usec) : 50=0.26%, 100=3.12%, 250=1.43% lat (msec) : 2=1.56%, 4=3.65%, 10=7.81%, 20=7.55%, 50=35.03% lat (msec) : 100=31.51%, 250=7.94%, 500=0.13% cpu : usr=0.08%, sys=5.75%, ctx=1824, majf=0, minf=18 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=178341: Mon Sep 14 07:21:38 2026 read: IOPS=9, BW=151KiB/s (154kB/s)(5744KiB/38099msec) clat (usec): min=42, max=218135, avg=51780.05, stdev=34706.17 lat (usec): min=43, max=218136, avg=51781.94, stdev=34705.85 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 75], 10.00th=[ 13304], 20.00th=[ 25560], | 30.00th=[ 33817], 40.00th=[ 41681], 50.00th=[ 48497], 60.00th=[ 55313], | 70.00th=[ 64750], 80.00th=[ 73925], 90.00th=[ 88605], 95.00th=[102237], | 99.00th=[196084], 99.50th=[217056], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 318, per=23.93%, avg=150.27, stdev=62.09, samples=74 iops : min= 1, max= 19, avg= 8.58, stdev= 3.93, samples=74 write: IOPS=10, BW=172KiB/s (176kB/s)(6544KiB/38099msec); 0 zone resets clat (usec): min=1659, max=232895, avg=46835.21, stdev=40640.73 lat (usec): min=1663, max=232898, avg=46837.89, stdev=40640.71 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 2999], 10.00th=[ 4359], 20.00th=[ 11338], | 30.00th=[ 19792], 40.00th=[ 25822], 50.00th=[ 35914], 60.00th=[ 47449], | 70.00th=[ 62129], 80.00th=[ 78119], 90.00th=[104334], 95.00th=[124257], | 99.00th=[179307], 99.50th=[187696], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 359, per=25.79%, avg=170.46, stdev=70.51, samples=74 iops : min= 1, max= 22, avg= 9.86, stdev= 4.41, samples=74 lat (usec) : 50=0.65%, 100=2.73%, 250=0.65%, 500=0.13%, 750=0.13% lat (msec) : 2=1.17%, 4=3.65%, 10=5.47%, 20=8.07%, 50=34.64% lat (msec) : 100=34.24%, 250=8.46% cpu : usr=0.08%, sys=5.86%, ctx=1924, majf=0, minf=18 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=178342: Mon Sep 14 07:21:38 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35771msec) clat (usec): min=57, max=179395, avg=52045.97, stdev=31938.31 lat (usec): min=58, max=179397, avg=52047.57, stdev=31938.30 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 102], 10.00th=[ 19006], 20.00th=[ 28181], | 30.00th=[ 34866], 40.00th=[ 39584], 50.00th=[ 45351], 60.00th=[ 53740], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 95945], 95.00th=[110625], | 99.00th=[147850], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 31, max= 381, per=27.92%, avg=175.36, stdev=66.28, samples=70 iops : min= 1, max= 23, avg=10.17, stdev= 4.19, samples=70 write: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35771msec); 0 zone resets clat (usec): min=1851, max=207343, avg=39989.01, stdev=36689.61 lat (usec): min=1854, max=207345, avg=39992.98, stdev=36689.62 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 2311], 10.00th=[ 4146], 20.00th=[ 7504], | 30.00th=[ 12780], 40.00th=[ 20579], 50.00th=[ 30802], 60.00th=[ 39584], | 70.00th=[ 53216], 80.00th=[ 68682], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[156238], 99.50th=[168821], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 62, max= 320, per=25.49%, avg=168.50, stdev=66.37, samples=70 iops : min= 3, max= 20, avg= 9.74, stdev= 4.22, samples=70 lat (usec) : 100=2.47%, 250=0.65%, 750=0.26%, 1000=0.13% lat (msec) : 2=0.91%, 4=3.91%, 10=8.33%, 20=8.20%, 50=36.59% lat (msec) : 100=30.47%, 250=8.07% cpu : usr=0.10%, sys=5.88%, ctx=1847, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178343: Mon Sep 14 07:21:38 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(6032KiB/36098msec) clat (usec): min=44, max=214199, avg=52699.10, stdev=36778.04 lat (usec): min=44, max=214202, avg=52701.42, stdev=36778.11 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 76], 10.00th=[ 153], 20.00th=[ 25822], | 30.00th=[ 33424], 40.00th=[ 41157], 50.00th=[ 47449], 60.00th=[ 57934], | 70.00th=[ 65274], 80.00th=[ 74974], 90.00th=[ 94897], 95.00th=[116917], | 99.00th=[200279], 99.50th=[212861], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 32, max= 378, per=26.75%, avg=168.00, stdev=66.00, samples=69 iops : min= 2, max= 23, avg= 9.72, stdev= 4.14, samples=69 write: IOPS=10, BW=173KiB/s (177kB/s)(6256KiB/36098msec); 0 zone resets clat (usec): min=1425, max=232866, avg=40650.56, stdev=39822.09 lat (usec): min=1428, max=232867, avg=40694.55, stdev=39794.05 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2278], 10.00th=[ 3949], 20.00th=[ 7242], | 30.00th=[ 10945], 40.00th=[ 18744], 50.00th=[ 28443], 60.00th=[ 39060], | 70.00th=[ 50594], 80.00th=[ 69731], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[175113], 99.50th=[212861], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 30, max= 384, per=26.03%, avg=172.09, stdev=77.12, samples=70 iops : min= 1, max= 24, avg= 9.96, stdev= 4.86, samples=70 lat (usec) : 50=0.39%, 100=3.39%, 250=1.43%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.82%, 4=3.39%, 10=9.11%, 20=7.94%, 50=34.11% lat (msec) : 100=28.65%, 250=9.38% cpu : usr=0.08%, sys=5.64%, ctx=1771, majf=0, minf=19 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=629KiB/s (644kB/s), 151KiB/s-175KiB/s (154kB/s-179kB/s), io=23.4MiB (24.5MB), run=35771-38099msec WRITE: bw=661KiB/s (677kB/s), 169KiB/s-175KiB/s (173kB/s-180kB/s), io=24.6MiB (25.8MB), run=35771-38099msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178336: Mon Sep 14 07:21:48 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(5920KiB/48062msec) clat (msec): min=10, max=312, avg=51.36, stdev=42.92 lat (msec): min=10, max=312, avg=51.37, stdev=42.92 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 111], 95.00th=[ 155], | 99.00th=[ 203], 99.50th=[ 236], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 380, per=25.35%, avg=125.49, stdev=69.06, samples=91 iops : min= 1, max= 23, avg= 7.02, stdev= 4.37, samples=91 write: IOPS=8, BW=132KiB/s (136kB/s)(6368KiB/48062msec); 0 zone resets clat (msec): min=12, max=306, avg=72.24, stdev=43.22 lat (msec): min=12, max=306, avg=72.25, stdev=43.22 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 37], | 30.00th=[ 44], 40.00th=[ 51], 50.00th=[ 60], 60.00th=[ 71], | 70.00th=[ 83], 80.00th=[ 106], 90.00th=[ 130], 95.00th=[ 159], | 99.00th=[ 211], 99.50th=[ 257], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 28, max= 318, per=25.55%, avg=133.11, stdev=65.12, samples=93 iops : min= 1, max= 19, avg= 7.51, stdev= 4.13, samples=93 lat (msec) : 20=8.33%, 50=44.53%, 100=29.56%, 250=17.19%, 500=0.39% cpu : usr=0.07%, sys=1.85%, ctx=1188, 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=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=178337: Mon Sep 14 07:21:48 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(5744KiB/48360msec) clat (msec): min=8, max=237, avg=51.84, stdev=42.09 lat (msec): min=8, max=237, avg=51.84, stdev=42.09 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 56], 80.00th=[ 73], 90.00th=[ 117], 95.00th=[ 146], | 99.00th=[ 197], 99.50th=[ 220], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 28, max= 504, per=24.84%, avg=122.95, stdev=74.72, samples=91 iops : min= 1, max= 31, avg= 6.86, stdev= 4.76, samples=91 write: IOPS=8, BW=135KiB/s (139kB/s)(6544KiB/48360msec); 0 zone resets clat (msec): min=15, max=294, avg=72.21, stdev=46.48 lat (msec): min=15, max=294, avg=72.22, stdev=46.48 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 44], 40.00th=[ 50], 50.00th=[ 59], 60.00th=[ 72], | 70.00th=[ 85], 80.00th=[ 101], 90.00th=[ 140], 95.00th=[ 161], | 99.00th=[ 236], 99.50th=[ 268], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 440, per=26.03%, avg=135.64, stdev=76.93, samples=94 iops : min= 1, max= 27, avg= 7.67, stdev= 4.84, samples=94 lat (msec) : 10=0.13%, 20=8.33%, 50=43.23%, 100=31.12%, 250=16.67% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.73%, ctx=1145, 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=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=178338: Mon Sep 14 07:21:48 2026 read: IOPS=8, BW=130KiB/s (134kB/s)(6256KiB/47962msec) clat (msec): min=8, max=328, avg=52.32, stdev=43.68 lat (msec): min=8, max=328, avg=52.32, stdev=43.68 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 44], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 108], 95.00th=[ 133], | 99.00th=[ 234], 99.50th=[ 317], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 415, per=26.98%, avg=133.54, stdev=77.45, samples=92 iops : min= 1, max= 25, avg= 7.53, stdev= 4.90, samples=92 write: IOPS=7, BW=126KiB/s (129kB/s)(6032KiB/47962msec); 0 zone resets clat (msec): min=16, max=256, avg=72.45, stdev=42.86 lat (msec): min=16, max=256, avg=72.46, stdev=42.86 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 29], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 44], 40.00th=[ 51], 50.00th=[ 57], 60.00th=[ 70], | 70.00th=[ 87], 80.00th=[ 107], 90.00th=[ 136], 95.00th=[ 159], | 99.00th=[ 201], 99.50th=[ 249], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 30, max= 316, per=24.04%, avg=125.26, stdev=61.71, samples=93 iops : min= 1, max= 19, avg= 7.01, stdev= 3.91, samples=93 lat (msec) : 10=0.26%, 20=6.25%, 50=46.09%, 100=29.56%, 250=17.32% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.78%, ctx=1203, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178339: Mon Sep 14 07:21:48 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(6032KiB/47713msec) clat (msec): min=8, max=244, avg=52.02, stdev=45.70 lat (msec): min=8, max=244, avg=52.03, stdev=45.71 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 52], 80.00th=[ 73], 90.00th=[ 122], 95.00th=[ 159], | 99.00th=[ 226], 99.50th=[ 239], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 440, per=25.72%, avg=127.31, stdev=83.98, samples=93 iops : min= 1, max= 27, avg= 7.14, stdev= 5.32, samples=93 write: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47713msec); 0 zone resets clat (msec): min=18, max=297, avg=71.68, stdev=45.97 lat (msec): min=18, max=297, avg=71.68, stdev=45.96 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 51], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 82], 80.00th=[ 102], 90.00th=[ 134], 95.00th=[ 163], | 99.00th=[ 253], 99.50th=[ 292], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 319, per=25.67%, avg=133.73, stdev=70.18, samples=92 iops : min= 1, max= 19, avg= 7.54, stdev= 4.46, samples=92 lat (msec) : 10=0.52%, 20=10.81%, 50=42.19%, 100=29.17%, 250=16.80% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.78%, ctx=1173, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=495KiB/s (507kB/s), 119KiB/s-130KiB/s (122kB/s-134kB/s), io=23.4MiB (24.5MB), run=47713-48360msec WRITE: bw=521KiB/s (534kB/s), 126KiB/s-135KiB/s (129kB/s-139kB/s), io=24.6MiB (25.8MB), run=47713-48360msec 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=178357: Mon Sep 14 07:22:07 2026 read: IOPS=1, BW=1555KiB/s (1593kB/s)(7168KiB/4609msec) clat (msec): min=104, max=388, avg=232.01, stdev=110.11 lat (msec): min=104, max=388, avg=232.01, stdev=110.11 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 153], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 380], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1988, max= 4140, per=100.00%, avg=3355.33, stdev=1188.44, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1111KiB/s (1138kB/s)(5120KiB/4609msec); 0 zone resets clat (msec): min=148, max=978, avg=589.30, stdev=366.33 lat (msec): min=148, max=978, avg=589.40, stdev=366.30 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1765, max= 4047, per=60.07%, avg=2452.00, stdev=1069.25, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=16.67% cpu : usr=0.07%, sys=3.56%, ctx=79, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178358: Mon Sep 14 07:22:07 2026 read: IOPS=0, BW=292KiB/s (299kB/s)(2048KiB/7024msec) clat (msec): min=127, max=917, avg=522.33, stdev=558.56 lat (msec): min=127, max=917, avg=522.33, stdev=558.56 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 128], 40.00th=[ 128], 50.00th=[ 128], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1984, max= 2031, per=68.87%, avg=2007.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1458KiB/s (1493kB/s)(10.0MiB/7024msec); 0 zone resets clat (msec): min=124, max=2239, avg=593.59, stdev=608.46 lat (msec): min=124, max=2239, avg=593.82, stdev=608.48 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 228], | 30.00th=[ 259], 40.00th=[ 313], 50.00th=[ 372], 60.00th=[ 477], | 70.00th=[ 575], 80.00th=[ 642], 90.00th=[ 701], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 1980, max= 4063, per=56.19%, avg=2293.86, stdev=780.33, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.17%, ctx=145, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178359: Mon Sep 14 07:22:07 2026 read: IOPS=0, BW=881KiB/s (902kB/s)(6144KiB/6972msec) clat (msec): min=78, max=969, avg=576.63, stdev=294.05 lat (msec): min=78, max=969, avg=576.63, stdev=294.05 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 642], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1969, max= 2039, per=68.77%, avg=2004.60, stdev=28.50, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=881KiB/s (902kB/s)(6144KiB/6972msec); 0 zone resets clat (msec): min=128, max=1849, avg=575.67, stdev=651.04 lat (msec): min=129, max=1849, avg=575.89, stdev=650.97 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 347], | 70.00th=[ 667], 80.00th=[ 667], 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= 2007, max= 4112, per=62.35%, avg=2545.25, stdev=1044.58, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=16.67%, 750=33.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=2.30%, ctx=104, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178360: Mon Sep 14 07:22:07 2026 read: IOPS=1, BW=1278KiB/s (1309kB/s)(5120KiB/4006msec) clat (msec): min=103, max=1208, avg=399.94, stdev=458.69 lat (msec): min=103, max=1208, avg=399.94, stdev=458.69 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 243], 60.00th=[ 243], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1969, max= 2000, per=68.04%, avg=1983.25, stdev=13.65, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1789KiB/s (1832kB/s)(7168KiB/4006msec); 0 zone resets clat (msec): min=132, max=571, avg=273.76, stdev=187.91 lat (msec): min=132, max=571, avg=273.88, stdev=187.96 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 142], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 150], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 510], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1765, max= 5930, per=76.13%, avg=3107.75, stdev=1930.54, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.22%, ctx=74, 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=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=2916KiB/s (2986kB/s), 292KiB/s-1555KiB/s (299kB/s-1593kB/s), io=20.0MiB (20.0MB), run=4006-7024msec WRITE: bw=4082KiB/s (4180kB/s), 881KiB/s-1789KiB/s (902kB/s-1832kB/s), io=28.0MiB (29.4MB), run=4006-7024msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178362: Mon Sep 14 07:22:07 2026 read: IOPS=1, BW=1685KiB/s (1725kB/s)(7168KiB/4254msec) clat (usec): min=1046, max=337422, avg=238359.24, stdev=111337.95 lat (usec): min=1050, max=337424, avg=238361.17, stdev=111337.53 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1045], 10.00th=[ 1045], 20.00th=[225444], | 30.00th=[240124], 40.00th=[240124], 50.00th=[270533], 60.00th=[283116], | 70.00th=[283116], 80.00th=[308282], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 1957, max= 3390, per=77.38%, avg=2294.40, stdev=613.56, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1204KiB/s (1232kB/s)(5120KiB/4254msec); 0 zone resets clat (msec): min=250, max=954, avg=514.11, stdev=302.26 lat (msec): min=252, max=954, avg=514.61, stdev=301.82 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 2039, max= 3900, per=64.10%, avg=2660.67, stdev=1073.30, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=16.67%, 500=58.33%, 750=8.33%, 1000=8.33% cpu : usr=0.12%, sys=15.35%, ctx=184, 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=178363: Mon Sep 14 07:22:07 2026 read: IOPS=0, BW=297KiB/s (304kB/s)(2048KiB/6907msec) clat (msec): min=263, max=289, avg=276.38, stdev=18.44 lat (msec): min=263, max=289, avg=276.38, stdev=18.44 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 1338, max= 1943, per=55.33%, avg=1640.50, stdev=427.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1483KiB/s (1518kB/s)(10.0MiB/6907msec); 0 zone resets clat (msec): min=190, max=1817, avg=633.48, stdev=508.68 lat (msec): min=190, max=1817, avg=635.08, stdev=508.40 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 232], | 30.00th=[ 243], 40.00th=[ 347], 50.00th=[ 397], 60.00th=[ 514], | 70.00th=[ 667], 80.00th=[ 818], 90.00th=[ 1116], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 2000, max= 4087, per=62.67%, avg=2601.57, stdev=982.79, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33%, 2000=16.67% cpu : usr=0.04%, sys=10.38%, ctx=177, 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=178364: Mon Sep 14 07:22:07 2026 read: IOPS=1, BW=1324KiB/s (1355kB/s)(6144KiB/4642msec) clat (usec): min=549, max=395352, avg=161136.37, stdev=150051.85 lat (usec): min=550, max=395353, avg=161137.76, stdev=150051.95 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 9634], | 30.00th=[ 9634], 40.00th=[132645], 50.00th=[132645], 60.00th=[179307], | 70.00th=[250610], 80.00th=[250610], 90.00th=[396362], 95.00th=[396362], | 99.00th=[396362], 99.50th=[396362], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 1973, max= 4087, per=91.10%, avg=2701.00, stdev=1200.82, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1324KiB/s (1355kB/s)(6144KiB/4642msec); 0 zone resets clat (msec): min=183, max=1089, avg=609.67, stdev=430.62 lat (msec): min=183, max=1089, avg=611.59, stdev=428.77 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 827], | 70.00th=[ 1062], 80.00th=[ 1062], 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= 2039, max= 3611, per=61.78%, avg=2564.33, stdev=906.44, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=50.00%, 500=8.33%, 1000=8.33%, 2000=16.67% cpu : usr=0.00%, sys=9.93%, ctx=200, 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=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=178365: Mon Sep 14 07:22:07 2026 read: IOPS=0, BW=782KiB/s (801kB/s)(5120KiB/6549msec) clat (usec): min=1141, max=1973.9k, avg=593027.59, stdev=831185.74 lat (usec): min=1142, max=1973.9k, avg=593028.77, stdev=831185.37 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1139], 10.00th=[ 1139], | 20.00th=[ 1139], 30.00th=[ 1352], 40.00th=[ 1352], | 50.00th=[ 233833], 60.00th=[ 233833], 70.00th=[ 759170], | 80.00th=[ 759170], 90.00th=[1971323], 95.00th=[1971323], | 99.00th=[1971323], 99.50th=[1971323], 99.90th=[1971323], | 99.95th=[1971323], 99.99th=[1971323] bw ( KiB/s): min= 2000, max= 4071, per=91.22%, avg=2704.67, stdev=1183.47, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1095KiB/s (1121kB/s)(7168KiB/6549msec); 0 zone resets clat (msec): min=152, max=985, avg=510.25, stdev=280.66 lat (msec): min=153, max=985, avg=510.48, stdev=280.46 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 247], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 510], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 684], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 2000, max= 4079, per=58.67%, avg=2435.20, stdev=919.08, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 2=16.67%, 250=25.00%, 500=8.33%, 750=25.00%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=10.81%, ctx=478, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2965KiB/s (3036kB/s), 297KiB/s-1685KiB/s (304kB/s-1725kB/s), io=20.0MiB (20.0MB), run=4254-6907msec WRITE: bw=4151KiB/s (4251kB/s), 1095KiB/s-1483KiB/s (1121kB/s-1518kB/s), io=28.0MiB (29.4MB), run=4254-6907msec 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=178377: Mon Sep 14 07:22:27 2026 read: IOPS=0, BW=4093KiB/s (4192kB/s)(12.0MiB/3002msec) clat (msec): min=848, max=1105, avg=968.75, stdev=129.51 lat (msec): min=848, max=1105, avg=968.75, stdev=129.51 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8031, max= 8126, per=100.00%, avg=8078.50, stdev=67.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.77%, ctx=42, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178378: Mon Sep 14 07:22:27 2026 read: IOPS=0, BW=1048KiB/s (1073kB/s)(4096KiB/3908msec) clat (nsec): min=2857.9M, max=2857.9M, avg=2857929688.00, stdev= 0.00 lat (nsec): min=2857.9M, max=2857.9M, avg=2857932706.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2869], 5.00th=[ 2869], 10.00th=[ 2869], 20.00th=[ 2869], | 30.00th=[ 2869], 40.00th=[ 2869], 50.00th=[ 2869], 60.00th=[ 2869], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 7757, max= 7757, per=100.00%, avg=7757.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2096KiB/s (2147kB/s)(8192KiB/3908msec); 0 zone resets clat (msec): min=423, max=472, avg=447.89, stdev=35.20 lat (msec): min=423, max=473, avg=448.12, stdev=35.32 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 8192, max= 8192, per=97.71%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.82%, ctx=54, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178379: Mon Sep 14 07:22:27 2026 write: IOPS=0, BW=3253KiB/s (3331kB/s)(12.0MiB/3777msec); 0 zone resets clat (msec): min=705, max=1655, avg=1229.06, stdev=482.11 lat (msec): min=706, max=1656, avg=1231.49, stdev=482.84 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7757, max= 8031, per=94.16%, avg=7894.00, stdev=193.75, 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=0.11%, sys=3.97%, ctx=56, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178380: Mon Sep 14 07:22:27 2026 write: IOPS=0, BW=3415KiB/s (3497kB/s)(12.0MiB/3598msec); 0 zone resets clat (msec): min=235, max=2827, avg=1141.17, stdev=1462.16 lat (msec): min=235, max=2828, avg=1141.50, stdev=1462.16 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 7148, max= 8031, per=90.52%, avg=7589.50, stdev=624.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.20%, 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 Run status group 0 (all jobs): READ: bw=4192KiB/s (4293kB/s), 1048KiB/s-4093KiB/s (1073kB/s-4192kB/s), io=16.0MiB (16.8MB), run=3002-3908msec WRITE: bw=8385KiB/s (8586kB/s), 2096KiB/s-3415KiB/s (2147kB/s-3497kB/s), io=32.0MiB (33.6MB), run=3598-3908msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178373: Mon Sep 14 07:22:27 2026 read: IOPS=0, BW=3931KiB/s (4025kB/s)(12.0MiB/3126msec) clat (msec): min=866, max=972, avg=932.67, stdev=57.40 lat (msec): min=866, max=972, avg=932.67, stdev=57.40 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 8078, max= 8192, per=100.00%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.19%, sys=10.85%, ctx=335, 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=178374: Mon Sep 14 07:22:27 2026 read: IOPS=0, BW=1487KiB/s (1523kB/s)(4096KiB/2754msec) clat (nsec): min=888446k, max=888446k, avg=888445658.00, stdev= 0.00 lat (nsec): min=888448k, max=888448k, avg=888448062.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2975KiB/s (3046kB/s)(8192KiB/2754msec); 0 zone resets clat (msec): min=746, max=903, avg=824.72, stdev=111.18 lat (msec): min=746, max=907, avg=827.18, stdev=113.65 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] 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 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=6.94%, ctx=74, 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=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=178375: Mon Sep 14 07:22:27 2026 write: IOPS=0, BW=2969KiB/s (3040kB/s)(12.0MiB/4139msec); 0 zone resets clat (msec): min=513, max=2078, avg=1299.77, stdev=782.83 lat (msec): min=513, max=2079, avg=1301.62, stdev=782.87 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 2072], 80.00th=[ 2072], 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= 8015, max= 8126, per=100.00%, avg=8070.50, stdev=78.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.79%, ctx=35, 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=178376: Mon Sep 14 07:22:27 2026 write: IOPS=0, BW=3104KiB/s (3178kB/s)(12.0MiB/3959msec); 0 zone resets clat (msec): min=327, max=2879, avg=1260.35, stdev=1407.56 lat (msec): min=328, max=2883, avg=1262.02, stdev=1409.89 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8062, max= 8078, per=100.00%, avg=8070.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.03%, ctx=39, 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=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=5241KiB/s (5367kB/s), 1487KiB/s-3931KiB/s (1523kB/s-4025kB/s), io=16.0MiB (16.8MB), run=2754-3126msec WRITE: bw=7917KiB/s (8107kB/s), 2969KiB/s-3104KiB/s (3040kB/s-3178kB/s), io=32.0MiB (33.6MB), run=2754-4139msec