== sanity test 398b: DIO and buffer IO race ============== 17:22:44 (1787606564) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.28446 s, 9.5 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=175678: Mon Aug 24 17:24:52 2026 read: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5992KiB/111230msec) clat (usec): min=32, max=278209, avg=35871.40, stdev=26954.60 lat (usec): min=32, max=278211, avg=35881.73, stdev=26957.41 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 938], 20.00th=[ 16909], | 30.00th=[ 21890], 40.00th=[ 26608], 50.00th=[ 30802], 60.00th=[ 35914], | 70.00th=[ 43254], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 83362], | 99.00th=[123208], 99.50th=[149947], 99.90th=[263193], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 111, per=25.02%, avg=53.54, stdev=22.95, samples=219 iops : min= 1, max= 27, avg=12.75, stdev= 5.78, samples=219 write: IOPS=14, BW=56.6KiB/s (57.0kB/s)(6296KiB/111230msec); 0 zone resets clat (usec): min=949, max=959177, avg=36219.93, stdev=44458.42 lat (usec): min=950, max=959178, avg=36223.95, stdev=44457.94 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1565], 20.00th=[ 3359], | 30.00th=[ 6849], 40.00th=[ 16581], 50.00th=[ 27919], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 61604], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[168821], 99.50th=[187696], 99.90th=[450888], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 7, max= 128, per=25.10%, avg=56.21, stdev=23.21, samples=219 iops : min= 1, max= 32, avg=13.41, stdev= 5.87, samples=219 lat (usec) : 50=0.55%, 100=3.78%, 250=0.39%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.26% lat (msec) : 2=6.77%, 4=4.92%, 10=6.51%, 20=11.69%, 50=39.68% lat (msec) : 100=21.48%, 250=3.68%, 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=5.40%, ctx=6641, 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=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=175679: Mon Aug 24 17:24:52 2026 read: IOPS=13, BW=53.8KiB/s (55.1kB/s)(5940KiB/110398msec) clat (usec): min=33, max=1050.6k, avg=36596.63, stdev=38819.16 lat (usec): min=34, max=1050.6k, avg=36598.26, stdev=38819.14 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 8094], | 20.00th=[ 17171], 30.00th=[ 21103], 40.00th=[ 25822], | 50.00th=[ 30540], 60.00th=[ 35390], 70.00th=[ 42730], | 80.00th=[ 53216], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[ 126354], 99.50th=[ 147850], 99.90th=[ 471860], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 103, per=25.07%, avg=53.65, stdev=21.06, samples=217 iops : min= 1, max= 25, avg=12.77, stdev= 5.29, samples=217 write: IOPS=14, BW=57.5KiB/s (58.9kB/s)(6348KiB/110398msec); 0 zone resets clat (usec): min=941, max=441261, avg=35026.41, stdev=36882.43 lat (usec): min=943, max=441263, avg=35030.96, stdev=36882.85 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1254], 10.00th=[ 1844], 20.00th=[ 3752], | 30.00th=[ 7570], 40.00th=[ 16909], 50.00th=[ 26084], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 60031], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[160433], 99.50th=[191890], 99.90th=[325059], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 8, max= 135, per=25.59%, avg=57.32, stdev=22.71, samples=217 iops : min= 2, max= 33, avg=13.70, stdev= 5.73, samples=217 lat (usec) : 50=0.59%, 100=3.19%, 250=0.52%, 500=0.23%, 1000=0.13% lat (msec) : 2=5.79%, 4=4.85%, 10=6.97%, 20=12.99%, 50=39.42% lat (msec) : 100=21.52%, 250=3.61%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=5.44%, ctx=6499, 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=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=175680: Mon Aug 24 17:24:52 2026 read: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6028KiB/111773msec) clat (usec): min=23, max=986978, avg=35192.17, stdev=35843.46 lat (usec): min=24, max=986980, avg=35194.16, stdev=35843.18 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 297], 20.00th=[ 16057], | 30.00th=[ 20579], 40.00th=[ 25035], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 42206], 80.00th=[ 52167], 90.00th=[ 65274], 95.00th=[ 78119], | 99.00th=[127402], 99.50th=[170918], 99.90th=[223347], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 142, per=25.02%, avg=53.55, stdev=23.22, samples=220 iops : min= 1, max= 35, avg=12.75, stdev= 5.83, samples=220 write: IOPS=14, BW=56.0KiB/s (57.3kB/s)(6260KiB/111773msec); 0 zone resets clat (usec): min=974, max=450906, avg=37227.69, stdev=38272.46 lat (usec): min=975, max=450907, avg=37231.74, stdev=38271.83 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1237], 10.00th=[ 1778], 20.00th=[ 3785], | 30.00th=[ 8356], 40.00th=[ 19006], 50.00th=[ 28443], 60.00th=[ 38536], | 70.00th=[ 50594], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[160433], 99.50th=[210764], 99.90th=[337642], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 7, max= 158, per=24.80%, avg=55.55, stdev=21.65, samples=220 iops : min= 1, max= 39, avg=13.25, stdev= 5.47, samples=220 lat (usec) : 50=0.94%, 100=3.39%, 250=0.52%, 500=0.13%, 1000=0.10% lat (msec) : 2=5.70%, 4=4.85%, 10=6.18%, 20=13.09%, 50=39.03% lat (msec) : 100=21.97%, 250=4.00%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.45%, ctx=6604, 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=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=175681: Mon Aug 24 17:24:52 2026 read: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6052KiB/111045msec) clat (usec): min=33, max=510823, avg=34983.93, stdev=27233.16 lat (usec): min=33, max=510824, avg=34986.37, stdev=27234.37 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 57], 10.00th=[ 5080], 20.00th=[ 16450], | 30.00th=[ 20579], 40.00th=[ 24511], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 43254], 80.00th=[ 53740], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[104334], 99.50th=[130548], 99.90th=[166724], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 7, max= 109, per=25.34%, avg=54.24, stdev=21.08, samples=219 iops : min= 1, max= 27, avg=12.93, stdev= 5.31, samples=219 write: IOPS=14, BW=56.2KiB/s (57.5kB/s)(6236KiB/111045msec); 0 zone resets clat (usec): min=780, max=989970, avg=36993.51, stdev=44161.35 lat (usec): min=781, max=989971, avg=36998.82, stdev=44165.27 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1156], 10.00th=[ 1647], 20.00th=[ 3851], | 30.00th=[ 7963], 40.00th=[ 18744], 50.00th=[ 27919], 60.00th=[ 36963], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[154141], 99.50th=[191890], 99.90th=[341836], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 111, per=24.95%, avg=55.89, stdev=20.70, samples=219 iops : min= 1, max= 27, avg=13.34, stdev= 5.23, samples=219 lat (usec) : 50=0.59%, 100=3.87%, 250=0.33%, 500=0.03%, 1000=0.29% lat (msec) : 2=5.96%, 4=4.49%, 10=6.09%, 20=13.22%, 50=38.83% lat (msec) : 100=22.59%, 250=3.55%, 500=0.10%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.37%, ctx=6583, majf=0, minf=20 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=215KiB/s (220kB/s), 53.8KiB/s-54.5KiB/s (55.1kB/s-55.8kB/s), io=23.4MiB (24.6MB), run=110398-111773msec WRITE: bw=225KiB/s (230kB/s), 56.0KiB/s-57.5KiB/s (57.3kB/s-58.9kB/s), io=24.6MiB (25.7MB), run=110398-111773msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175683: Mon Aug 24 17:27:27 2026 read: IOPS=5, BW=22.8KiB/s (23.3kB/s)(5992KiB/262800msec) clat (msec): min=4, max=1037, avg=31.18, stdev=39.62 lat (msec): min=4, max=1037, avg=31.18, stdev=39.62 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 40], 90.00th=[ 63], 95.00th=[ 88], | 99.00th=[ 161], 99.50th=[ 203], 99.90th=[ 347], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 104, per=27.84%, avg=25.05, stdev=16.88, samples=463 iops : min= 1, max= 26, avg= 5.65, stdev= 4.26, samples=463 write: IOPS=5, BW=23.0KiB/s (24.5kB/s)(6296KiB/262800msec); 0 zone resets clat (msec): min=34, max=668, avg=137.22, stdev=57.71 lat (msec): min=34, max=668, avg=137.22, stdev=57.71 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 115], 50.00th=[ 127], 60.00th=[ 140], | 70.00th=[ 155], 80.00th=[ 176], 90.00th=[ 211], 95.00th=[ 239], | 99.00th=[ 321], 99.50th=[ 368], 99.90th=[ 535], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 48, per=24.93%, avg=23.43, stdev= 9.12, samples=518 iops : min= 1, max= 12, avg= 5.24, stdev= 2.34, samples=518 lat (msec) : 10=4.69%, 20=17.81%, 50=19.86%, 100=18.29%, 250=37.50% lat (msec) : 500=1.76%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.06%, ctx=5029, 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=175684: Mon Aug 24 17:27:27 2026 read: IOPS=5, BW=22.4KiB/s (22.9kB/s)(5940KiB/265554msec) clat (msec): min=5, max=1010, avg=30.65, stdev=38.15 lat (msec): min=5, max=1010, avg=30.65, stdev=38.15 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 40], 90.00th=[ 65], 95.00th=[ 81], | 99.00th=[ 142], 99.50th=[ 186], 99.90th=[ 359], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 88, per=27.53%, avg=24.78, stdev=16.69, samples=464 iops : min= 1, max= 22, avg= 5.59, stdev= 4.21, samples=464 write: IOPS=5, BW=23.9KiB/s (24.5kB/s)(6348KiB/265554msec); 0 zone resets clat (msec): min=36, max=577, avg=138.58, stdev=59.52 lat (msec): min=36, max=577, avg=138.59, stdev=59.52 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 93], | 30.00th=[ 105], 40.00th=[ 117], 50.00th=[ 129], 60.00th=[ 142], | 70.00th=[ 159], 80.00th=[ 178], 90.00th=[ 213], 95.00th=[ 243], | 99.00th=[ 338], 99.50th=[ 401], 99.90th=[ 535], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 48, per=24.99%, avg=23.49, stdev= 9.11, samples=522 iops : min= 1, max= 12, avg= 5.26, stdev= 2.34, samples=522 lat (msec) : 10=4.07%, 20=18.68%, 50=19.43%, 100=18.26%, 250=37.27% lat (msec) : 500=2.15%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.07%, ctx=5188, 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=175685: Mon Aug 24 17:27:27 2026 read: IOPS=5, BW=22.8KiB/s (23.3kB/s)(6028KiB/264950msec) clat (msec): min=5, max=362, avg=32.26, stdev=32.52 lat (msec): min=5, max=362, avg=32.27, stdev=32.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 69], 95.00th=[ 90], | 99.00th=[ 163], 99.50th=[ 201], 99.90th=[ 334], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 118, per=27.30%, avg=24.57, stdev=16.94, samples=474 iops : min= 1, max= 29, avg= 5.54, stdev= 4.29, samples=474 write: IOPS=5, BW=23.6KiB/s (24.2kB/s)(6260KiB/264950msec); 0 zone resets clat (msec): min=35, max=1169, avg=138.15, stdev=61.64 lat (msec): min=35, max=1169, avg=138.16, stdev=61.63 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 80], 20.00th=[ 93], | 30.00th=[ 104], 40.00th=[ 115], 50.00th=[ 127], 60.00th=[ 140], | 70.00th=[ 157], 80.00th=[ 180], 90.00th=[ 209], 95.00th=[ 241], | 99.00th=[ 317], 99.50th=[ 351], 99.90th=[ 584], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 55, per=24.92%, avg=23.43, stdev= 8.99, samples=515 iops : min= 1, max= 13, avg= 5.24, stdev= 2.32, samples=515 lat (msec) : 10=3.91%, 20=18.49%, 50=19.08%, 100=19.17%, 250=37.21% lat (msec) : 500=2.05%, 750=0.07%, 2000=0.03% cpu : usr=0.03%, sys=1.03%, ctx=4971, 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=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=175686: Mon Aug 24 17:27:27 2026 read: IOPS=5, BW=23.1KiB/s (23.7kB/s)(6052KiB/261738msec) clat (msec): min=5, max=336, avg=30.69, stdev=29.82 lat (msec): min=5, max=336, avg=30.70, stdev=29.82 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 67], 95.00th=[ 90], | 99.00th=[ 140], 99.50th=[ 188], 99.90th=[ 313], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 95, per=28.29%, avg=25.46, stdev=16.97, samples=460 iops : min= 1, max= 23, avg= 5.76, stdev= 4.28, samples=460 write: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6236KiB/261738msec); 0 zone resets clat (msec): min=29, max=1204, avg=138.02, stdev=61.79 lat (msec): min=29, max=1204, avg=138.02, stdev=61.79 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 106], 40.00th=[ 116], 50.00th=[ 128], 60.00th=[ 140], | 70.00th=[ 157], 80.00th=[ 178], 90.00th=[ 209], 95.00th=[ 241], | 99.00th=[ 309], 99.50th=[ 359], 99.90th=[ 659], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 55, per=24.90%, avg=23.40, stdev= 9.03, samples=514 iops : min= 1, max= 13, avg= 5.23, stdev= 2.31, samples=514 lat (msec) : 10=4.65%, 20=18.85%, 50=18.39%, 100=18.49%, 250=37.76% lat (msec) : 500=1.79%, 750=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.03%, ctx=5160, 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=90.4KiB/s (92.6kB/s), 22.4KiB/s-23.1KiB/s (22.9kB/s-23.7kB/s), io=23.4MiB (24.6MB), run=261738-265554msec WRITE: bw=94.7KiB/s (96.9kB/s), 23.6KiB/s-23.0KiB/s (24.2kB/s-24.5kB/s), io=24.6MiB (25.7MB), run=261738-265554msec 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=175743: Mon Aug 24 17:28:03 2026 read: IOPS=13, BW=220KiB/s (225kB/s)(5920KiB/26938msec) clat (usec): min=34, max=191720, avg=36872.79, stdev=32500.76 lat (usec): min=34, max=191721, avg=36874.08, stdev=32500.74 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 74], | 30.00th=[ 20317], 40.00th=[ 27657], 50.00th=[ 33817], 60.00th=[ 40633], | 70.00th=[ 48497], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 94897], | 99.00th=[152044], 99.50th=[191890], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 90, max= 544, per=26.50%, avg=223.42, stdev=91.07, samples=52 iops : min= 5, max= 34, avg=13.23, stdev= 5.82, samples=52 write: IOPS=14, BW=236KiB/s (242kB/s)(6368KiB/26938msec); 0 zone resets clat (usec): min=1355, max=332165, avg=32404.09, stdev=37171.62 lat (usec): min=1357, max=332167, avg=32406.05, stdev=37171.57 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1696], 10.00th=[ 2573], 20.00th=[ 5211], | 30.00th=[ 7242], 40.00th=[ 10945], 50.00th=[ 19792], 60.00th=[ 30016], | 70.00th=[ 41157], 80.00th=[ 58459], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[160433], 99.50th=[256902], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 30, max= 403, per=27.18%, avg=241.12, stdev=83.90, samples=52 iops : min= 1, max= 25, avg=14.35, stdev= 5.33, samples=52 lat (usec) : 50=1.56%, 100=8.85%, 250=0.91%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.52%, 4=5.34%, 10=11.07%, 20=9.11%, 50=32.42% lat (msec) : 100=22.40%, 250=4.30%, 500=0.26% cpu : usr=0.11%, sys=5.80%, ctx=1411, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175745: Mon Aug 24 17:28:03 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(5744KiB/26753msec) clat (usec): min=39, max=276942, avg=36941.25, stdev=32054.37 lat (usec): min=39, max=276943, avg=36943.66, stdev=32054.43 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 58], 10.00th=[ 64], 20.00th=[ 1270], | 30.00th=[ 21365], 40.00th=[ 28181], 50.00th=[ 33424], 60.00th=[ 39584], | 70.00th=[ 47449], 80.00th=[ 56361], 90.00th=[ 72877], 95.00th=[ 86508], | 99.00th=[145753], 99.50th=[208667], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 349, per=25.57%, avg=215.54, stdev=66.55, samples=52 iops : min= 1, max= 21, avg=12.73, stdev= 4.16, samples=52 write: IOPS=15, BW=245KiB/s (250kB/s)(6544KiB/26753msec); 0 zone resets clat (usec): min=1294, max=274464, avg=32767.10, stdev=36345.73 lat (usec): min=1295, max=274467, avg=32769.26, stdev=36345.68 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1778], 10.00th=[ 2769], 20.00th=[ 4752], | 30.00th=[ 8455], 40.00th=[ 11731], 50.00th=[ 21365], 60.00th=[ 31327], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 79168], 95.00th=[102237], | 99.00th=[154141], 99.50th=[187696], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 63, max= 444, per=27.70%, avg=245.71, stdev=89.83, samples=52 iops : min= 3, max= 27, avg=14.63, stdev= 5.71, samples=52 lat (usec) : 50=0.78%, 100=6.77%, 250=0.91%, 500=0.13%, 750=0.39% lat (usec) : 1000=0.26% lat (msec) : 2=3.78%, 4=4.95%, 10=10.81%, 20=9.77%, 50=36.59% lat (msec) : 100=20.83%, 250=3.65%, 500=0.39% cpu : usr=0.09%, sys=5.68%, ctx=1412, 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=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=175747: Mon Aug 24 17:28:03 2026 read: IOPS=13, BW=220KiB/s (226kB/s)(6256KiB/28384msec) clat (usec): min=34, max=457353, avg=36003.49, stdev=37494.38 lat (usec): min=34, max=457355, avg=36008.15, stdev=37493.21 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 108], | 30.00th=[ 19268], 40.00th=[ 26870], 50.00th=[ 32375], 60.00th=[ 38536], | 70.00th=[ 45351], 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[185598], 99.50th=[200279], 99.90th=[459277], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 31, max= 479, per=26.65%, avg=224.65, stdev=90.08, samples=55 iops : min= 1, max= 29, avg=13.29, stdev= 5.68, samples=55 write: IOPS=13, BW=213KiB/s (218kB/s)(6032KiB/28384msec); 0 zone resets clat (usec): min=1226, max=273801, avg=36985.40, stdev=42506.31 lat (usec): min=1227, max=273803, avg=36988.21, stdev=42505.68 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1811], 10.00th=[ 2802], 20.00th=[ 4490], | 30.00th=[ 7963], 40.00th=[ 11994], 50.00th=[ 20579], 60.00th=[ 33817], | 70.00th=[ 47973], 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[200279], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 29, max= 509, per=23.92%, avg=212.16, stdev=101.95, samples=56 iops : min= 1, max= 31, avg=12.50, stdev= 6.41, samples=56 lat (usec) : 50=1.43%, 100=8.20%, 250=1.56%, 500=0.65%, 750=0.13% lat (msec) : 2=3.26%, 4=6.38%, 10=7.94%, 20=10.68%, 50=33.33% lat (msec) : 100=21.22%, 250=4.82%, 500=0.39% cpu : usr=0.05%, sys=5.44%, ctx=1442, 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=175749: Mon Aug 24 17:28:03 2026 read: IOPS=14, BW=226KiB/s (232kB/s)(6032KiB/26677msec) clat (usec): min=33, max=496726, avg=38828.26, stdev=37792.76 lat (usec): min=33, max=496727, avg=38832.69, stdev=37790.96 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 59], 10.00th=[ 63], 20.00th=[ 109], | 30.00th=[ 21890], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 43779], | 70.00th=[ 51119], 80.00th=[ 62129], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[122160], 99.50th=[156238], 99.90th=[497026], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 31, max= 407, per=27.10%, avg=228.45, stdev=81.54, samples=51 iops : min= 1, max= 25, avg=13.53, stdev= 5.17, samples=51 write: IOPS=14, BW=235KiB/s (240kB/s)(6256KiB/26677msec); 0 zone resets clat (usec): min=1420, max=257256, avg=29881.41, stdev=32005.20 lat (usec): min=1421, max=257259, avg=29883.36, stdev=32005.19 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1745], 10.00th=[ 2573], 20.00th=[ 5145], | 30.00th=[ 7570], 40.00th=[ 10290], 50.00th=[ 15401], 60.00th=[ 28181], | 70.00th=[ 38011], 80.00th=[ 53740], 90.00th=[ 72877], 95.00th=[ 89654], | 99.00th=[123208], 99.50th=[145753], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 61, max= 569, per=26.83%, avg=238.02, stdev=98.91, samples=51 iops : min= 3, max= 35, avg=14.14, stdev= 6.20, samples=51 lat (usec) : 50=0.65%, 100=8.85%, 250=1.69%, 500=0.13% lat (msec) : 2=3.78%, 4=5.34%, 10=11.20%, 20=9.11%, 50=32.68% lat (msec) : 100=23.31%, 250=2.99%, 500=0.26% cpu : usr=0.06%, sys=5.59%, ctx=1388, 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=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=844KiB/s (864kB/s), 215KiB/s-226KiB/s (220kB/s-232kB/s), io=23.4MiB (24.5MB), run=26677-28384msec WRITE: bw=888KiB/s (909kB/s), 213KiB/s-245KiB/s (218kB/s-250kB/s), io=24.6MiB (25.8MB), run=26677-28384msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175742: Mon Aug 24 17:28:41 2026 read: IOPS=5, BW=89.0KiB/s (91.2kB/s)(5920KiB/66497msec) clat (msec): min=6, max=362, avg=35.88, stdev=36.81 lat (msec): min=6, max=362, avg=35.88, stdev=36.81 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 77], 95.00th=[ 102], | 99.00th=[ 211], 99.50th=[ 279], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 319, per=27.48%, avg=98.12, stdev=59.38, samples=118 iops : min= 1, max= 19, avg= 5.31, stdev= 3.76, samples=118 write: IOPS=5, BW=95.8KiB/s (98.1kB/s)(6368KiB/66497msec); 0 zone resets clat (msec): min=43, max=382, avg=133.07, stdev=61.37 lat (msec): min=43, max=382, avg=133.09, stdev=61.37 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 66], 10.00th=[ 73], 20.00th=[ 83], | 30.00th=[ 95], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 130], | 70.00th=[ 144], 80.00th=[ 178], 90.00th=[ 230], 95.00th=[ 262], | 99.00th=[ 338], 99.50th=[ 372], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 21, max= 192, per=26.19%, avg=98.46, stdev=42.62, samples=127 iops : min= 1, max= 12, avg= 5.33, stdev= 2.75, samples=127 lat (msec) : 10=1.82%, 20=16.80%, 50=21.22%, 100=24.48%, 250=32.42% lat (msec) : 500=3.26% cpu : usr=0.04%, sys=1.23%, ctx=1215, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175744: Mon Aug 24 17:28:41 2026 read: IOPS=5, BW=85.7KiB/s (87.8kB/s)(5744KiB/67012msec) clat (msec): min=5, max=261, avg=35.63, stdev=33.78 lat (msec): min=5, max=261, avg=35.63, stdev=33.79 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 48], 90.00th=[ 86], 95.00th=[ 113], | 99.00th=[ 184], 99.50th=[ 194], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 21, max= 319, per=28.34%, avg=101.18, stdev=66.24, samples=112 iops : min= 1, max= 19, avg= 5.52, stdev= 4.21, samples=112 write: IOPS=6, BW=97.7KiB/s (99.0kB/s)(6544KiB/67012msec); 0 zone resets clat (msec): min=45, max=610, avg=131.78, stdev=62.70 lat (msec): min=45, max=610, avg=131.79, stdev=62.70 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 108], 50.00th=[ 120], 60.00th=[ 130], | 70.00th=[ 142], 80.00th=[ 171], 90.00th=[ 213], 95.00th=[ 247], | 99.00th=[ 351], 99.50th=[ 384], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 31, max= 224, per=26.67%, avg=100.27, stdev=39.28, samples=128 iops : min= 1, max= 14, avg= 5.45, stdev= 2.55, samples=128 lat (msec) : 10=1.69%, 20=16.80%, 50=20.18%, 100=22.79%, 250=35.94% lat (msec) : 500=2.47%, 750=0.13% cpu : usr=0.05%, sys=1.23%, ctx=1242, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175746: Mon Aug 24 17:28:41 2026 read: IOPS=6, BW=96.6KiB/s (98.9kB/s)(6256KiB/64756msec) clat (msec): min=6, max=358, avg=33.33, stdev=37.51 lat (msec): min=6, max=358, avg=33.33, stdev=37.51 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 72], 95.00th=[ 99], | 99.00th=[ 203], 99.50th=[ 243], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 318, per=29.83%, avg=106.51, stdev=70.58, samples=116 iops : min= 1, max= 19, avg= 5.84, stdev= 4.45, samples=116 write: IOPS=5, BW=93.1KiB/s (95.4kB/s)(6032KiB/64756msec); 0 zone resets clat (msec): min=46, max=500, avg=136.40, stdev=66.62 lat (msec): min=46, max=500, avg=136.41, stdev=66.62 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 89], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 120], 60.00th=[ 133], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 226], 95.00th=[ 271], | 99.00th=[ 384], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 31, max= 192, per=24.85%, avg=93.44, stdev=40.40, samples=126 iops : min= 1, max= 12, avg= 5.02, stdev= 2.59, samples=126 lat (msec) : 10=2.60%, 20=20.83%, 50=20.96%, 100=19.66%, 250=32.16% lat (msec) : 500=3.52%, 750=0.26% cpu : usr=0.03%, sys=1.21%, ctx=1369, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175748: Mon Aug 24 17:28:41 2026 read: IOPS=5, BW=91.9KiB/s (94.1kB/s)(6032KiB/65607msec) clat (msec): min=6, max=201, avg=33.29, stdev=30.25 lat (msec): min=6, max=201, avg=33.29, stdev=30.25 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 67], 95.00th=[ 109], | 99.00th=[ 153], 99.50th=[ 194], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 31, max= 307, per=29.03%, avg=103.65, stdev=61.06, samples=113 iops : min= 1, max= 19, avg= 5.66, stdev= 3.90, samples=113 write: IOPS=5, BW=95.4KiB/s (97.6kB/s)(6256KiB/65607msec); 0 zone resets clat (msec): min=50, max=493, avg=135.39, stdev=62.97 lat (msec): min=50, max=493, avg=135.39, stdev=62.97 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 89], | 30.00th=[ 99], 40.00th=[ 109], 50.00th=[ 120], 60.00th=[ 131], | 70.00th=[ 148], 80.00th=[ 174], 90.00th=[ 211], 95.00th=[ 259], | 99.00th=[ 376], 99.50th=[ 489], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 31, max= 190, per=25.26%, avg=94.98, stdev=39.78, samples=129 iops : min= 1, max= 11, avg= 5.11, stdev= 2.53, samples=129 lat (msec) : 10=1.82%, 20=18.62%, 50=20.31%, 100=21.74%, 250=34.24% lat (msec) : 500=3.26% cpu : usr=0.04%, sys=1.20%, ctx=1246, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=357KiB/s (366kB/s), 85.7KiB/s-96.6KiB/s (87.8kB/s-98.9kB/s), io=23.4MiB (24.5MB), run=64756-67012msec WRITE: bw=376KiB/s (385kB/s), 93.1KiB/s-97.7KiB/s (95.4kB/s-99.0kB/s), io=24.6MiB (25.8MB), run=64756-67012msec 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=175768: Mon Aug 24 17:28:55 2026 read: IOPS=2, BW=2081KiB/s (2131kB/s)(7168KiB/3445msec) clat (msec): min=92, max=402, avg=153.26, stdev=112.62 lat (msec): min=92, max=402, avg=153.27, stdev=112.62 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 95], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 106], 60.00th=[ 108], | 70.00th=[ 108], 80.00th=[ 167], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1878, max= 6071, per=92.68%, avg=3972.33, stdev=2096.50, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1486KiB/s (1522kB/s)(5120KiB/3445msec); 0 zone resets clat (msec): min=210, max=713, avg=465.37, stdev=187.95 lat (msec): min=210, max=714, avg=465.46, stdev=187.96 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1848, max= 3968, per=43.66%, avg=2619.67, stdev=1171.75, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=4.56%, 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=175769: Mon Aug 24 17:28:55 2026 read: IOPS=0, BW=429KiB/s (439kB/s)(2048KiB/4778msec) clat (msec): min=122, max=162, avg=142.48, stdev=28.92 lat (msec): min=122, max=162, avg=142.49, stdev=28.92 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 163], | 70.00th=[ 163], 80.00th=[ 163], 90.00th=[ 163], 95.00th=[ 163], | 99.00th=[ 163], 99.50th=[ 163], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 1418, max= 1885, per=38.53%, avg=1651.50, stdev=330.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2143KiB/s (2195kB/s)(10.0MiB/4778msec); 0 zone resets clat (msec): min=115, max=813, avg=429.61, stdev=258.25 lat (msec): min=115, max=813, avg=429.82, stdev=258.22 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 142], | 30.00th=[ 174], 40.00th=[ 271], 50.00th=[ 368], 60.00th=[ 435], | 70.00th=[ 558], 80.00th=[ 709], 90.00th=[ 718], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1418, max= 4087, per=36.30%, avg=2178.14, stdev=868.80, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=4.10%, ctx=100, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175770: Mon Aug 24 17:28:55 2026 read: IOPS=1, BW=1501KiB/s (1538kB/s)(6144KiB/4092msec) clat (msec): min=112, max=723, avg=281.06, stdev=230.06 lat (msec): min=112, max=723, avg=281.06, stdev=230.06 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 125], | 30.00th=[ 125], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 215], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1885, max= 3599, per=55.41%, avg=2374.75, stdev=818.43, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1501KiB/s (1538kB/s)(6144KiB/4092msec); 0 zone resets clat (msec): min=181, max=593, avg=376.96, stdev=150.83 lat (msec): min=181, max=593, avg=377.05, stdev=150.84 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1414, max= 4087, per=39.04%, avg=2342.50, stdev=1189.29, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=3.76%, ctx=90, 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=175771: Mon Aug 24 17:28:55 2026 read: IOPS=1, BW=1170KiB/s (1198kB/s)(5120KiB/4376msec) clat (msec): min=94, max=610, avg=284.15, stdev=226.78 lat (msec): min=94, max=610, avg=284.15, stdev=226.78 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 144], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 3968, max= 4071, per=93.78%, avg=4019.50, stdev=72.83, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1638KiB/s (1677kB/s)(7168KiB/4376msec); 0 zone resets clat (msec): min=160, max=726, avg=403.34, stdev=240.67 lat (msec): min=160, max=726, avg=404.38, stdev=240.22 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 184], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 305], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 676], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1799, max= 2756, per=35.95%, avg=2157.25, stdev=414.66, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=33.33% cpu : usr=0.00%, sys=3.43%, ctx=83, 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=4286KiB/s (4389kB/s), 429KiB/s-2081KiB/s (439kB/s-2131kB/s), io=20.0MiB (20.0MB), run=3445-4778msec WRITE: bw=6001KiB/s (6145kB/s), 1486KiB/s-2143KiB/s (1522kB/s-2195kB/s), io=28.0MiB (29.4MB), run=3445-4778msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175773: Mon Aug 24 17:28:55 2026 read: IOPS=2, BW=2052KiB/s (2101kB/s)(7168KiB/3493msec) clat (usec): min=455, max=390571, avg=209234.64, stdev=118848.83 lat (usec): min=456, max=390573, avg=209236.15, stdev=118848.94 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[160433], | 30.00th=[173016], 40.00th=[173016], 50.00th=[235930], 60.00th=[238027], | 70.00th=[238027], 80.00th=[265290], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 1973, max= 4079, per=77.86%, avg=3337.67, stdev=1183.31, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1466KiB/s (1501kB/s)(5120KiB/3493msec); 0 zone resets clat (msec): min=218, max=411, avg=344.94, stdev=76.49 lat (msec): min=218, max=411, avg=345.17, stdev=76.54 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2039, max= 3976, per=44.73%, avg=2684.67, stdev=1118.33, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=50.00% cpu : usr=0.00%, sys=15.64%, ctx=216, 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=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=175774: Mon Aug 24 17:28:55 2026 read: IOPS=0, BW=429KiB/s (439kB/s)(2048KiB/4777msec) clat (usec): min=559, max=618946, avg=309753.40, stdev=437265.68 lat (usec): min=561, max=618949, avg=309755.33, stdev=437266.12 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 562], 50.00th=[ 562], 60.00th=[616563], | 70.00th=[616563], 80.00th=[616563], 90.00th=[616563], 95.00th=[616563], | 99.00th=[616563], 99.50th=[616563], 99.90th=[616563], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 2039, max= 2039, per=47.56%, avg=2039.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2144KiB/s (2195kB/s)(10.0MiB/4777msec); 0 zone resets clat (msec): min=135, max=808, avg=388.39, stdev=266.78 lat (msec): min=135, max=808, avg=388.45, stdev=266.78 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 207], 50.00th=[ 284], 60.00th=[ 288], | 70.00th=[ 342], 80.00th=[ 718], 90.00th=[ 768], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1980, max= 6047, per=50.61%, avg=3037.83, stdev=1687.79, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.04%, sys=11.54%, ctx=126, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175775: Mon Aug 24 17:28:55 2026 read: IOPS=1, BW=1769KiB/s (1811kB/s)(6144KiB/3474msec) clat (usec): min=517, max=358854, avg=165584.24, stdev=171390.02 lat (usec): min=519, max=358856, avg=165585.84, stdev=171389.94 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 31589], 50.00th=[ 31589], 60.00th=[283116], | 70.00th=[316670], 80.00th=[316670], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 1980, max= 4079, per=62.57%, avg=2682.33, stdev=1209.56, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1769KiB/s (1811kB/s)(6144KiB/3474msec); 0 zone resets clat (msec): min=313, max=587, avg=401.03, stdev=120.67 lat (msec): min=313, max=587, avg=401.13, stdev=120.65 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 359], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1928, max= 2039, per=33.30%, avg=1998.50, stdev=52.79, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 500=58.33%, 750=16.67% cpu : usr=0.03%, sys=12.47%, ctx=260, 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=175776: Mon Aug 24 17:28:55 2026 read: IOPS=1, BW=1340KiB/s (1372kB/s)(5120KiB/3822msec) clat (usec): min=1133, max=326043, avg=163943.92, stdev=157486.55 lat (usec): min=1134, max=326044, avg=163945.11, stdev=157486.51 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1139], 10.00th=[ 1139], 20.00th=[ 1139], | 30.00th=[ 1532], 40.00th=[ 1532], 50.00th=[187696], 60.00th=[187696], | 70.00th=[304088], 80.00th=[304088], 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= 7953, max= 7953, per=100.00%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1875KiB/s (1920kB/s)(7168KiB/3822msec); 0 zone resets clat (msec): min=245, max=593, avg=399.16, stdev=120.23 lat (msec): min=246, max=593, avg=399.41, stdev=120.01 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 330], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 347], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 514], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2039, max= 4087, per=47.20%, avg=2833.00, stdev=1088.14, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 2=16.67%, 250=16.67%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=13.58%, ctx=167, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4287KiB/s (4390kB/s), 429KiB/s-2052KiB/s (439kB/s-2101kB/s), io=20.0MiB (20.0MB), run=3474-4777msec WRITE: bw=6002KiB/s (6146kB/s), 1466KiB/s-2144KiB/s (1501kB/s-2195kB/s), io=28.0MiB (29.4MB), run=3474-4777msec 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=175783: Mon Aug 24 17:29:07 2026 read: IOPS=1, BW=4681KiB/s (4793kB/s)(12.0MiB/2625msec) clat (msec): min=611, max=960, avg=793.71, stdev=174.84 lat (msec): min=611, max=960, avg=793.71, stdev=174.84 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 961], 80.00th=[ 961], 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= 7907, max= 7937, per=100.00%, avg=7922.00, stdev=21.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=17.38%, ctx=523, 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=175784: Mon Aug 24 17:29:07 2026 read: IOPS=0, BW=1753KiB/s (1795kB/s)(4096KiB/2337msec) clat (nsec): min=748485k, max=748485k, avg=748485311.00, stdev= 0.00 lat (nsec): min=748488k, max=748488k, avg=748487762.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7907, max= 7907, per=100.00%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3505KiB/s (3589kB/s)(8192KiB/2337msec); 0 zone resets clat (msec): min=594, max=915, avg=754.95, stdev=227.39 lat (msec): min=594, max=915, avg=755.23, stdev=227.29 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 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= 7922, max= 7922, per=75.63%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=9.03%, ctx=131, 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=175785: Mon Aug 24 17:29:07 2026 write: IOPS=0, BW=3928KiB/s (4023kB/s)(12.0MiB/3128msec); 0 zone resets clat (msec): min=313, max=1517, avg=970.21, stdev=609.22 lat (msec): min=314, max=1517, avg=970.67, stdev=609.25 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7922, max= 7922, per=75.63%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.17%, ctx=58, 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=175786: Mon Aug 24 17:29:07 2026 write: IOPS=1, BW=4752KiB/s (4866kB/s)(12.0MiB/2586msec); 0 zone resets clat (msec): min=475, max=958, avg=778.90, stdev=264.08 lat (msec): min=476, max=959, avg=779.23, stdev=264.09 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 961], 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= 7907, max= 7937, per=75.63%, avg=7922.00, stdev=21.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=7.97%, ctx=88, 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=6242KiB/s (6391kB/s), 1753KiB/s-4681KiB/s (1795kB/s-4793kB/s), io=16.0MiB (16.8MB), run=2337-2625msec WRITE: bw=10.2MiB/s (10.7MB/s), 3505KiB/s-4752KiB/s (3589kB/s-4866kB/s), io=32.0MiB (33.6MB), run=2337-3128msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175787: Mon Aug 24 17:29:08 2026 read: IOPS=2, BW=11.3MiB/s (11.9MB/s)(12.0MiB/1060msec) clat (msec): min=260, max=450, avg=330.66, stdev=104.43 lat (msec): min=260, max=450, avg=330.67, stdev=104.43 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 5712, max= 5712, per=100.00%, avg=5712.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.19%, sys=15.58%, ctx=72, 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=175788: Mon Aug 24 17:29:08 2026 read: IOPS=0, BW=1397KiB/s (1430kB/s)(4096KiB/2933msec) clat (nsec): min=885489k, max=885489k, avg=885489079.00, stdev= 0.00 lat (nsec): min=885492k, max=885492k, avg=885491807.00, 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= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2793KiB/s (2860kB/s)(8192KiB/2933msec); 0 zone resets clat (msec): min=975, max=1019, avg=997.43, stdev=30.79 lat (msec): min=976, max=1019, avg=997.79, stdev=30.75 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 1020], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 8192, max= 8192, per=83.35%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.03%, sys=5.01%, ctx=40, 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=175789: Mon Aug 24 17:29:08 2026 write: IOPS=0, BW=3686KiB/s (3774kB/s)(12.0MiB/3334msec); 0 zone resets clat (msec): min=269, max=1781, avg=1087.61, stdev=763.84 lat (msec): min=269, max=1783, avg=1088.22, stdev=764.24 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 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= 8192, max= 8192, per=83.35%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.85%, 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=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=175790: Mon Aug 24 17:29:08 2026 write: IOPS=1, BW=4840KiB/s (4956kB/s)(12.0MiB/2539msec); 0 zone resets clat (msec): min=608, max=1233, avg=824.31, stdev=354.69 lat (msec): min=608, max=1233, avg=824.64, stdev=354.59 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8062, max= 8192, per=82.69%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=7.72%, ctx=49, 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=5586KiB/s (5720kB/s), 1397KiB/s-11.3MiB/s (1430kB/s-11.9MB/s), io=16.0MiB (16.8MB), run=1060-2933msec WRITE: bw=9828KiB/s (10.1MB/s), 2793KiB/s-4840KiB/s (2860kB/s-4956kB/s), io=32.0MiB (33.6MB), run=2539-3334msec