== sanity test 398b: DIO and buffer IO race ============== 06:50:36 (1779101436) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.13727 s, 7.1 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=178786: Mon May 18 06:54:11 2026 read: IOPS=7, BW=31.7KiB/s (32.5kB/s)(5992KiB/188957msec) clat (usec): min=40, max=686932, avg=70299.28, stdev=55812.90 lat (usec): min=40, max=686936, avg=70306.48, stdev=55812.95 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 13829], 10.00th=[ 23462], 20.00th=[ 32900], | 30.00th=[ 41157], 40.00th=[ 49546], 50.00th=[ 57410], 60.00th=[ 66847], | 70.00th=[ 79168], 80.00th=[ 99091], 90.00th=[131597], 95.00th=[164627], | 99.00th=[291505], 99.50th=[375391], 99.90th=[650118], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 94, per=25.66%, avg=32.08, stdev=15.74, samples=359 iops : min= 1, max= 23, avg= 7.33, stdev= 3.95, samples=359 write: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6296KiB/188957msec); 0 zone resets clat (usec): min=971, max=1055.9k, avg=52882.90, stdev=62471.41 lat (usec): min=973, max=1055.9k, avg=52892.10, stdev=62476.53 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1516], 10.00th=[ 1926], | 20.00th=[ 6194], 30.00th=[ 13435], 40.00th=[ 23462], | 50.00th=[ 34866], 60.00th=[ 47973], 70.00th=[ 66847], | 80.00th=[ 89654], 90.00th=[ 125305], 95.00th=[ 162530], | 99.00th=[ 238027], 99.50th=[ 287310], 99.90th=[ 517997], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 5, max= 103, per=25.52%, avg=33.43, stdev=18.31, samples=361 iops : min= 1, max= 25, avg= 7.68, stdev= 4.62, samples=361 lat (usec) : 50=0.13%, 100=1.63%, 250=0.07%, 1000=0.03% lat (msec) : 2=5.27%, 4=2.21%, 10=5.79%, 20=7.42%, 50=28.65% lat (msec) : 100=30.92%, 250=16.80%, 500=0.94%, 750=0.10%, 2000=0.03% cpu : usr=0.07%, sys=4.32%, ctx=6601, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178787: Mon May 18 06:54:11 2026 read: IOPS=7, BW=31.1KiB/s (31.9kB/s)(5940KiB/190854msec) clat (usec): min=52, max=1130.8k, avg=71481.12, stdev=61643.64 lat (usec): min=53, max=1130.8k, avg=71483.26, stdev=61643.28 clat percentiles (usec): | 1.00th=[ 66], 5.00th=[ 17433], 10.00th=[ 25297], | 20.00th=[ 33162], 30.00th=[ 40109], 40.00th=[ 47449], | 50.00th=[ 56886], 60.00th=[ 68682], 70.00th=[ 81265], | 80.00th=[ 102237], 90.00th=[ 133694], 95.00th=[ 168821], | 99.00th=[ 242222], 99.50th=[ 346031], 99.90th=[ 725615], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 79, per=25.04%, avg=31.30, stdev=15.47, samples=365 iops : min= 1, max= 19, avg= 7.14, stdev= 3.89, samples=365 write: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6348KiB/190854msec); 0 zone resets clat (usec): min=1126, max=470597, avg=53195.01, stdev=58264.42 lat (usec): min=1127, max=470599, avg=53201.78, stdev=58264.21 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1582], 10.00th=[ 2376], 20.00th=[ 7242], | 30.00th=[ 14091], 40.00th=[ 23725], 50.00th=[ 35390], 60.00th=[ 48497], | 70.00th=[ 65799], 80.00th=[ 87557], 90.00th=[128451], 95.00th=[173016], | 99.00th=[256902], 99.50th=[308282], 99.90th=[455082], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 7, max= 106, per=25.58%, avg=33.52, stdev=18.96, samples=365 iops : min= 1, max= 26, avg= 7.69, stdev= 4.78, samples=365 lat (usec) : 100=1.33%, 250=0.20%, 500=0.10% lat (msec) : 2=4.72%, 4=2.47%, 10=5.47%, 20=7.06%, 50=30.99% lat (msec) : 100=29.59%, 250=17.02%, 500=0.94%, 750=0.07%, 2000=0.03% cpu : usr=0.09%, sys=4.37%, ctx=6591, 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=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=178788: Mon May 18 06:54:11 2026 read: IOPS=8, BW=32.1KiB/s (32.8kB/s)(6028KiB/187959msec) clat (usec): min=42, max=1827.6k, avg=70619.14, stdev=66664.55 lat (usec): min=42, max=1827.6k, avg=70624.16, stdev=66662.91 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 17695], 10.00th=[ 24773], | 20.00th=[ 33162], 30.00th=[ 41157], 40.00th=[ 47973], | 50.00th=[ 57934], 60.00th=[ 68682], 70.00th=[ 80217], | 80.00th=[ 98042], 90.00th=[ 130548], 95.00th=[ 164627], | 99.00th=[ 250610], 99.50th=[ 308282], 99.90th=[ 400557], | 99.95th=[1820328], 99.99th=[1820328] bw ( KiB/s): min= 6, max= 87, per=25.93%, avg=32.41, stdev=15.72, samples=358 iops : min= 1, max= 21, avg= 7.42, stdev= 3.95, samples=358 write: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6260KiB/187959msec); 0 zone resets clat (usec): min=1028, max=747792, avg=51886.06, stdev=58799.79 lat (usec): min=1030, max=747795, avg=51896.55, stdev=58803.07 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1532], 10.00th=[ 2057], 20.00th=[ 6587], | 30.00th=[ 13173], 40.00th=[ 22938], 50.00th=[ 34866], 60.00th=[ 47449], | 70.00th=[ 64226], 80.00th=[ 85459], 90.00th=[123208], 95.00th=[160433], | 99.00th=[256902], 99.50th=[304088], 99.90th=[404751], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 103, per=25.92%, avg=33.95, stdev=19.15, samples=355 iops : min= 1, max= 25, avg= 7.81, stdev= 4.82, samples=355 lat (usec) : 50=0.07%, 100=1.24%, 250=0.20% lat (msec) : 2=5.01%, 4=2.64%, 10=5.18%, 20=8.01%, 50=29.46% lat (msec) : 100=30.63%, 250=16.44%, 500=1.07%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=4.15%, ctx=6587, 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=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=178789: Mon May 18 06:54:11 2026 read: IOPS=7, BW=31.6KiB/s (32.3kB/s)(6052KiB/191651msec) clat (usec): min=33, max=418797, avg=69480.16, stdev=48666.36 lat (usec): min=33, max=418799, avg=69483.16, stdev=48666.88 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 12780], 10.00th=[ 22152], 20.00th=[ 32637], | 30.00th=[ 41681], 40.00th=[ 49546], 50.00th=[ 58459], 60.00th=[ 68682], | 70.00th=[ 82314], 80.00th=[100140], 90.00th=[129500], 95.00th=[164627], | 99.00th=[244319], 99.50th=[278922], 99.90th=[346031], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 85, per=25.62%, avg=32.02, stdev=15.12, samples=364 iops : min= 1, max= 21, avg= 7.32, stdev= 3.83, samples=364 write: IOPS=8, BW=32.5KiB/s (33.3kB/s)(6236KiB/191651msec); 0 zone resets clat (usec): min=922, max=1746.2k, avg=55257.46, stdev=75694.85 lat (usec): min=923, max=1746.2k, avg=55272.93, stdev=75699.20 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1582], 10.00th=[ 2835], | 20.00th=[ 6980], 30.00th=[ 13698], 40.00th=[ 24773], | 50.00th=[ 35914], 60.00th=[ 50070], 70.00th=[ 66847], | 80.00th=[ 90702], 90.00th=[ 129500], 95.00th=[ 160433], | 99.00th=[ 267387], 99.50th=[ 371196], 99.90th=[ 775947], | 99.95th=[1753220], 99.99th=[1753220] bw ( KiB/s): min= 7, max= 118, per=24.94%, avg=32.67, stdev=17.34, samples=368 iops : min= 1, max= 29, avg= 7.49, stdev= 4.37, samples=368 lat (usec) : 50=0.23%, 100=1.56%, 250=0.29%, 500=0.07%, 1000=0.03% lat (msec) : 2=4.07%, 4=2.54%, 10=6.48%, 20=7.19%, 50=27.90% lat (msec) : 100=31.32%, 250=17.22%, 500=0.98%, 750=0.07%, 1000=0.03% lat (msec) : 2000=0.03% cpu : usr=0.08%, sys=4.20%, ctx=6809, 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=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=125KiB/s (128kB/s), 31.1KiB/s-32.1KiB/s (31.9kB/s-32.8kB/s), io=23.4MiB (24.6MB), run=187959-191651msec WRITE: bw=131KiB/s (134kB/s), 32.5KiB/s-33.3KiB/s (33.3kB/s-34.1kB/s), io=24.6MiB (25.7MB), run=187959-191651msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178781: Mon May 18 06:55:07 2026 read: IOPS=6, BW=24.1KiB/s (24.7kB/s)(5992KiB/248162msec) clat (msec): min=7, max=1619, avg=65.42, stdev=77.93 lat (msec): min=7, max=1619, avg=65.42, stdev=77.93 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 52], | 70.00th=[ 66], 80.00th=[ 93], 90.00th=[ 142], 95.00th=[ 192], | 99.00th=[ 321], 99.50th=[ 338], 99.90th=[ 1062], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 5, max= 120, per=26.93%, avg=25.85, stdev=18.72, samples=444 iops : min= 1, max= 30, avg= 5.77, stdev= 4.72, samples=444 write: IOPS=6, BW=25.4KiB/s (25.0kB/s)(6296KiB/248162msec); 0 zone resets clat (msec): min=14, max=580, avg=95.03, stdev=75.28 lat (msec): min=14, max=580, avg=95.04, stdev=75.28 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 43], | 30.00th=[ 51], 40.00th=[ 58], 50.00th=[ 70], 60.00th=[ 84], | 70.00th=[ 105], 80.00th=[ 136], 90.00th=[ 186], 95.00th=[ 241], | 99.00th=[ 405], 99.50th=[ 477], 99.90th=[ 558], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 6, max= 93, per=26.17%, avg=26.44, stdev=17.05, samples=456 iops : min= 1, max= 23, avg= 5.92, stdev= 4.31, samples=456 lat (msec) : 10=0.42%, 20=6.41%, 50=36.88%, 100=31.41%, 250=21.16% lat (msec) : 500=3.52%, 750=0.13%, 2000=0.07% cpu : usr=0.06%, sys=1.59%, ctx=4844, 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=178782: Mon May 18 06:55:07 2026 read: IOPS=5, BW=23.0KiB/s (24.5kB/s)(5940KiB/247859msec) clat (msec): min=6, max=1036, avg=63.63, stdev=64.26 lat (msec): min=6, max=1036, avg=63.63, stdev=64.26 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 66], 80.00th=[ 91], 90.00th=[ 138], 95.00th=[ 182], | 99.00th=[ 309], 99.50th=[ 347], 99.90th=[ 523], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 6, max= 119, per=27.32%, avg=26.23, stdev=18.79, samples=434 iops : min= 1, max= 29, avg= 5.87, stdev= 4.75, samples=434 write: IOPS=6, BW=25.6KiB/s (26.2kB/s)(6348KiB/247859msec); 0 zone resets clat (msec): min=13, max=1832, avg=96.28, stdev=88.66 lat (msec): min=13, max=1832, avg=96.28, stdev=88.67 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 44], | 30.00th=[ 52], 40.00th=[ 61], 50.00th=[ 72], 60.00th=[ 87], | 70.00th=[ 109], 80.00th=[ 138], 90.00th=[ 180], 95.00th=[ 230], | 99.00th=[ 401], 99.50th=[ 485], 99.90th=[ 1011], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 7, max= 88, per=25.67%, avg=25.93, stdev=16.51, samples=468 iops : min= 1, max= 22, avg= 5.79, stdev= 4.16, samples=468 lat (msec) : 10=0.49%, 20=6.48%, 50=36.49%, 100=30.57%, 250=23.14% lat (msec) : 500=2.57%, 750=0.16%, 2000=0.10% cpu : usr=0.06%, sys=1.64%, ctx=4998, 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=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=178783: Mon May 18 06:55:07 2026 read: IOPS=6, BW=24.3KiB/s (24.8kB/s)(6028KiB/248438msec) clat (msec): min=7, max=649, avg=65.29, stdev=63.45 lat (msec): min=7, max=649, avg=65.30, stdev=63.45 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 70], 80.00th=[ 94], 90.00th=[ 142], 95.00th=[ 190], | 99.00th=[ 309], 99.50th=[ 372], 99.90th=[ 477], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 6, max= 128, per=27.07%, avg=25.99, stdev=18.88, samples=446 iops : min= 1, max= 32, avg= 5.81, stdev= 4.78, samples=446 write: IOPS=6, BW=25.2KiB/s (25.8kB/s)(6260KiB/248438msec); 0 zone resets clat (msec): min=12, max=1827, avg=95.49, stdev=86.87 lat (msec): min=12, max=1827, avg=95.50, stdev=86.87 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 42], | 30.00th=[ 51], 40.00th=[ 60], 50.00th=[ 71], 60.00th=[ 87], | 70.00th=[ 107], 80.00th=[ 134], 90.00th=[ 186], 95.00th=[ 234], | 99.00th=[ 376], 99.50th=[ 430], 99.90th=[ 1083], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 6, max= 95, per=25.58%, avg=25.83, stdev=17.13, samples=465 iops : min= 1, max= 23, avg= 5.77, stdev= 4.32, samples=465 lat (msec) : 10=0.46%, 20=6.32%, 50=36.52%, 100=30.99%, 250=22.40% lat (msec) : 500=3.12%, 750=0.13%, 2000=0.07% cpu : usr=0.06%, sys=1.68%, ctx=5059, 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=178784: Mon May 18 06:55:07 2026 read: IOPS=6, BW=24.4KiB/s (25.0kB/s)(6052KiB/247780msec) clat (msec): min=6, max=525, avg=63.83, stdev=59.92 lat (msec): min=6, max=525, avg=63.84, stdev=59.93 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 92], 90.00th=[ 144], 95.00th=[ 192], | 99.00th=[ 296], 99.50th=[ 321], 99.90th=[ 401], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 6, max= 103, per=27.60%, avg=26.50, stdev=18.32, samples=438 iops : min= 1, max= 25, avg= 5.94, stdev= 4.61, samples=438 write: IOPS=6, BW=25.2KiB/s (25.8kB/s)(6236KiB/247780msec); 0 zone resets clat (msec): min=11, max=1404, avg=96.63, stdev=84.57 lat (msec): min=11, max=1404, avg=96.63, stdev=84.57 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 43], | 30.00th=[ 51], 40.00th=[ 60], 50.00th=[ 71], 60.00th=[ 88], | 70.00th=[ 108], 80.00th=[ 138], 90.00th=[ 188], 95.00th=[ 243], | 99.00th=[ 393], 99.50th=[ 498], 99.90th=[ 1083], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 96, per=25.41%, avg=25.67, stdev=17.21, samples=465 iops : min= 1, max= 24, avg= 5.73, stdev= 4.35, samples=465 lat (msec) : 10=0.49%, 20=6.32%, 50=36.69%, 100=31.05%, 250=22.27% lat (msec) : 500=2.93%, 750=0.16%, 1000=0.03%, 2000=0.07% cpu : usr=0.06%, sys=1.64%, ctx=4982, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=96.7KiB/s (98.0kB/s), 23.0KiB/s-24.4KiB/s (24.5kB/s-25.0kB/s), io=23.4MiB (24.6MB), run=247780-248438msec WRITE: bw=101KiB/s (104kB/s), 25.2KiB/s-25.6KiB/s (25.8kB/s-26.2kB/s), io=24.6MiB (25.7MB), run=247780-248438msec 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=178853: Mon May 18 06:56:04 2026 read: IOPS=8, BW=139KiB/s (142kB/s)(5920KiB/42642msec) clat (usec): min=36, max=341769, avg=60732.72, stdev=38797.76 lat (usec): min=37, max=341773, avg=60738.71, stdev=38794.16 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 80], 10.00th=[ 17695], 20.00th=[ 33817], | 30.00th=[ 39584], 40.00th=[ 47973], 50.00th=[ 57410], 60.00th=[ 66323], | 70.00th=[ 74974], 80.00th=[ 85459], 90.00th=[103285], 95.00th=[126354], | 99.00th=[187696], 99.50th=[217056], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 31, max= 242, per=25.48%, avg=138.87, stdev=50.92, samples=83 iops : min= 1, max= 15, avg= 7.88, stdev= 3.25, samples=83 write: IOPS=9, BW=149KiB/s (153kB/s)(6368KiB/42642msec); 0 zone resets clat (usec): min=1968, max=294724, avg=50403.81, stdev=49217.47 lat (usec): min=1971, max=294728, avg=50408.40, stdev=49218.01 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 5], 20.00th=[ 9], | 30.00th=[ 16], 40.00th=[ 26], 50.00th=[ 35], 60.00th=[ 49], | 70.00th=[ 63], 80.00th=[ 86], 90.00th=[ 120], 95.00th=[ 146], | 99.00th=[ 211], 99.50th=[ 292], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 346, per=26.30%, avg=150.96, stdev=65.22, samples=82 iops : min= 1, max= 21, avg= 8.65, stdev= 4.15, samples=82 lat (usec) : 50=0.13%, 100=3.26%, 250=0.39% lat (msec) : 2=0.39%, 4=5.08%, 10=6.51%, 20=7.94%, 50=28.52% lat (msec) : 100=33.98%, 250=13.28%, 500=0.52% cpu : usr=0.08%, sys=5.15%, ctx=1785, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178854: Mon May 18 06:56:04 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(5744KiB/41132msec) clat (usec): min=43, max=278752, avg=61036.55, stdev=37859.01 lat (usec): min=43, max=278754, avg=61038.86, stdev=37858.94 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 87], 10.00th=[ 21103], 20.00th=[ 32900], | 30.00th=[ 41157], 40.00th=[ 49021], 50.00th=[ 56361], 60.00th=[ 61604], | 70.00th=[ 71828], 80.00th=[ 89654], 90.00th=[109577], 95.00th=[131597], | 99.00th=[173016], 99.50th=[179307], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 29, max= 349, per=26.00%, avg=141.68, stdev=62.66, samples=79 iops : min= 1, max= 21, avg= 8.05, stdev= 3.93, samples=79 write: IOPS=9, BW=159KiB/s (163kB/s)(6544KiB/41132msec); 0 zone resets clat (usec): min=1912, max=235308, avg=46764.80, stdev=44121.18 lat (usec): min=1915, max=235312, avg=46777.43, stdev=44131.59 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 3097], 10.00th=[ 5145], 20.00th=[ 9503], | 30.00th=[ 15008], 40.00th=[ 22938], 50.00th=[ 34866], 60.00th=[ 46924], | 70.00th=[ 57934], 80.00th=[ 74974], 90.00th=[114820], 95.00th=[135267], | 99.00th=[187696], 99.50th=[189793], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 30, max= 333, per=28.02%, avg=160.81, stdev=75.34, samples=79 iops : min= 1, max= 20, avg= 9.25, stdev= 4.78, samples=79 lat (usec) : 50=0.26%, 100=2.99%, 250=0.39% lat (msec) : 2=0.91%, 4=3.12%, 10=7.29%, 20=8.98%, 50=29.17% lat (msec) : 100=33.85%, 250=12.89%, 500=0.13% cpu : usr=0.09%, sys=5.22%, ctx=1801, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178855: Mon May 18 06:56:04 2026 read: IOPS=8, BW=143KiB/s (146kB/s)(6256KiB/43885msec) clat (usec): min=38, max=248247, avg=61267.13, stdev=39952.22 lat (usec): min=38, max=248249, avg=61285.22, stdev=39958.39 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 85], 10.00th=[ 13960], 20.00th=[ 30278], | 30.00th=[ 38011], 40.00th=[ 47973], 50.00th=[ 57934], 60.00th=[ 65799], | 70.00th=[ 73925], 80.00th=[ 89654], 90.00th=[111674], 95.00th=[128451], | 99.00th=[193987], 99.50th=[240124], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 286, per=26.08%, avg=142.13, stdev=60.87, samples=86 iops : min= 1, max= 17, avg= 8.09, stdev= 3.86, samples=86 write: IOPS=8, BW=137KiB/s (141kB/s)(6032KiB/43885msec); 0 zone resets clat (usec): min=1773, max=250924, avg=52652.57, stdev=47468.94 lat (usec): min=1775, max=250930, avg=52666.47, stdev=47490.33 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 2606], 10.00th=[ 5342], 20.00th=[ 10421], | 30.00th=[ 16909], 40.00th=[ 25822], 50.00th=[ 41681], 60.00th=[ 52691], | 70.00th=[ 71828], 80.00th=[ 90702], 90.00th=[113771], 95.00th=[156238], | 99.00th=[206570], 99.50th=[212861], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 30, max= 286, per=24.35%, avg=139.77, stdev=62.29, samples=84 iops : min= 1, max= 17, avg= 7.95, stdev= 3.97, samples=84 lat (usec) : 50=0.26%, 100=2.86%, 250=0.65%, 500=0.26%, 1000=0.13% lat (msec) : 2=0.78%, 4=3.12%, 10=5.99%, 20=8.20%, 50=27.21% lat (msec) : 100=35.03%, 250=15.36%, 500=0.13% cpu : usr=0.07%, sys=5.11%, ctx=1866, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178856: Mon May 18 06:56:04 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(6032KiB/39434msec) clat (usec): min=53, max=246256, avg=57786.05, stdev=37502.27 lat (usec): min=55, max=246258, avg=57788.65, stdev=37503.52 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 75], 10.00th=[ 1401], 20.00th=[ 30278], | 30.00th=[ 39060], 40.00th=[ 46924], 50.00th=[ 54789], 60.00th=[ 61080], | 70.00th=[ 69731], 80.00th=[ 82314], 90.00th=[102237], 95.00th=[128451], | 99.00th=[175113], 99.50th=[206570], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 29, max= 318, per=28.34%, avg=154.45, stdev=64.69, samples=76 iops : min= 1, max= 19, avg= 8.87, stdev= 4.12, samples=76 write: IOPS=9, BW=159KiB/s (162kB/s)(6256KiB/39434msec); 0 zone resets clat (usec): min=1317, max=239920, avg=44869.03, stdev=43241.62 lat (usec): min=1321, max=239923, avg=44879.18, stdev=43241.98 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2409], 10.00th=[ 5014], 20.00th=[ 8848], | 30.00th=[ 15008], 40.00th=[ 24511], 50.00th=[ 32113], 60.00th=[ 40633], | 70.00th=[ 54264], 80.00th=[ 73925], 90.00th=[108528], 95.00th=[145753], | 99.00th=[173016], 99.50th=[189793], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 284, per=27.67%, avg=158.84, stdev=55.75, samples=77 iops : min= 1, max= 17, avg= 9.13, stdev= 3.55, samples=77 lat (usec) : 100=4.17%, 250=0.52%, 500=0.13% lat (msec) : 2=1.17%, 4=2.86%, 10=7.94%, 20=7.42%, 50=31.51% lat (msec) : 100=33.20%, 250=11.07% cpu : usr=0.07%, sys=5.10%, ctx=1724, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=546KiB/s (559kB/s), 139KiB/s-153KiB/s (142kB/s-157kB/s), io=23.4MiB (24.5MB), run=39434-43885msec WRITE: bw=574KiB/s (588kB/s), 137KiB/s-159KiB/s (141kB/s-163kB/s), io=24.6MiB (25.8MB), run=39434-43885msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178847: Mon May 18 06:56:22 2026 read: IOPS=5, BW=93.7KiB/s (95.9kB/s)(5920KiB/63204msec) clat (msec): min=8, max=312, avg=66.86, stdev=49.91 lat (msec): min=8, max=312, avg=66.88, stdev=49.91 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 60], | 70.00th=[ 70], 80.00th=[ 89], 90.00th=[ 136], 95.00th=[ 180], | 99.00th=[ 243], 99.50th=[ 292], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 256, per=25.79%, avg=97.23, stdev=52.82, samples=119 iops : min= 1, max= 16, avg= 5.23, stdev= 3.36, samples=119 write: IOPS=6, BW=101KiB/s (103kB/s)(6368KiB/63204msec); 0 zone resets clat (msec): min=16, max=368, avg=96.12, stdev=55.80 lat (msec): min=16, max=368, avg=96.13, stdev=55.80 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 35], 10.00th=[ 44], 20.00th=[ 54], | 30.00th=[ 63], 40.00th=[ 71], 50.00th=[ 81], 60.00th=[ 92], | 70.00th=[ 106], 80.00th=[ 136], 90.00th=[ 178], 95.00th=[ 203], | 99.00th=[ 292], 99.50th=[ 338], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 29, max= 250, per=25.45%, avg=101.03, stdev=45.32, samples=123 iops : min= 1, max= 15, avg= 5.48, stdev= 2.89, samples=123 lat (msec) : 10=0.13%, 20=1.95%, 50=28.91%, 100=43.49%, 250=24.09% lat (msec) : 500=1.43% cpu : usr=0.06%, sys=1.82%, ctx=1320, 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=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=178848: Mon May 18 06:56:22 2026 read: IOPS=5, BW=91.1KiB/s (93.3kB/s)(5744KiB/63065msec) clat (msec): min=10, max=287, avg=66.33, stdev=44.68 lat (msec): min=10, max=287, avg=66.33, stdev=44.68 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 63], | 70.00th=[ 71], 80.00th=[ 93], 90.00th=[ 125], 95.00th=[ 155], | 99.00th=[ 234], 99.50th=[ 268], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 287, per=25.27%, avg=95.28, stdev=52.37, samples=116 iops : min= 1, max= 17, avg= 5.09, stdev= 3.32, samples=116 write: IOPS=6, BW=104KiB/s (106kB/s)(6544KiB/63065msec); 0 zone resets clat (msec): min=18, max=376, avg=95.71, stdev=56.43 lat (msec): min=18, max=376, avg=95.72, stdev=56.43 clat percentiles (msec): | 1.00th=[ 28], 5.00th=[ 39], 10.00th=[ 44], 20.00th=[ 51], | 30.00th=[ 60], 40.00th=[ 69], 50.00th=[ 80], 60.00th=[ 93], | 70.00th=[ 111], 80.00th=[ 132], 90.00th=[ 174], 95.00th=[ 209], | 99.00th=[ 279], 99.50th=[ 330], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 31, max= 255, per=26.21%, avg=104.05, stdev=49.61, samples=121 iops : min= 1, max= 15, avg= 5.65, stdev= 3.12, samples=121 lat (msec) : 20=2.21%, 50=28.52%, 100=42.06%, 250=25.78%, 500=1.43% cpu : usr=0.05%, sys=1.74%, ctx=1224, 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=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=178849: Mon May 18 06:56:22 2026 read: IOPS=6, BW=98.7KiB/s (101kB/s)(6256KiB/63406msec) clat (msec): min=10, max=312, avg=68.54, stdev=53.01 lat (msec): min=10, max=312, avg=68.54, stdev=53.01 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 74], 80.00th=[ 93], 90.00th=[ 134], 95.00th=[ 188], | 99.00th=[ 288], 99.50th=[ 305], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 288, per=26.54%, avg=100.06, stdev=60.07, samples=122 iops : min= 1, max= 18, avg= 5.41, stdev= 3.83, samples=122 write: IOPS=5, BW=95.1KiB/s (97.4kB/s)(6032KiB/63406msec); 0 zone resets clat (msec): min=20, max=307, avg=96.36, stdev=54.76 lat (msec): min=20, max=307, avg=96.37, stdev=54.76 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 33], 10.00th=[ 40], 20.00th=[ 51], | 30.00th=[ 59], 40.00th=[ 69], 50.00th=[ 82], 60.00th=[ 102], | 70.00th=[ 116], 80.00th=[ 142], 90.00th=[ 178], 95.00th=[ 205], | 99.00th=[ 279], 99.50th=[ 296], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 29, max= 247, per=23.89%, avg=94.84, stdev=45.95, samples=122 iops : min= 1, max= 15, avg= 5.08, stdev= 2.92, samples=122 lat (msec) : 20=2.34%, 50=30.47%, 100=38.80%, 250=26.43%, 500=1.95% cpu : usr=0.07%, sys=1.80%, ctx=1326, 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=178850: Mon May 18 06:56:22 2026 read: IOPS=5, BW=95.2KiB/s (97.5kB/s)(6032KiB/63362msec) clat (msec): min=11, max=315, avg=72.11, stdev=53.97 lat (msec): min=11, max=315, avg=72.12, stdev=53.99 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 69], | 70.00th=[ 82], 80.00th=[ 99], 90.00th=[ 148], 95.00th=[ 199], | 99.00th=[ 255], 99.50th=[ 309], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 285, per=25.93%, avg=97.77, stdev=52.64, samples=119 iops : min= 1, max= 17, avg= 5.28, stdev= 3.34, samples=119 write: IOPS=6, BW=98.7KiB/s (101kB/s)(6256KiB/63362msec); 0 zone resets clat (msec): min=19, max=295, avg=91.86, stdev=51.91 lat (msec): min=19, max=295, avg=91.87, stdev=51.91 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 35], 10.00th=[ 41], 20.00th=[ 52], | 30.00th=[ 59], 40.00th=[ 67], 50.00th=[ 77], 60.00th=[ 89], | 70.00th=[ 105], 80.00th=[ 128], 90.00th=[ 169], 95.00th=[ 199], | 99.00th=[ 266], 99.50th=[ 275], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 29, max= 224, per=25.16%, avg=99.89, stdev=50.22, samples=122 iops : min= 1, max= 14, avg= 5.39, stdev= 3.17, samples=122 lat (msec) : 20=3.52%, 50=27.21%, 100=42.97%, 250=25.00%, 500=1.30% cpu : usr=0.05%, sys=1.77%, ctx=1301, 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=378KiB/s (387kB/s), 91.1KiB/s-98.7KiB/s (93.3kB/s-101kB/s), io=23.4MiB (24.5MB), run=63065-63406msec WRITE: bw=397KiB/s (407kB/s), 95.1KiB/s-104KiB/s (97.4kB/s-106kB/s), io=24.6MiB (25.8MB), run=63065-63406msec 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=178872: Mon May 18 06:56:42 2026 read: IOPS=1, BW=1538KiB/s (1575kB/s)(7168KiB/4660msec) clat (usec): min=1035, max=1954.1k, avg=421698.22, stdev=684111.76 lat (usec): min=1037, max=1954.1k, avg=421700.42, stdev=684111.64 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1037], 10.00th=[ 1037], | 20.00th=[ 65274], 30.00th=[ 175113], 40.00th=[ 175113], | 50.00th=[ 183501], 60.00th=[ 258999], 70.00th=[ 258999], | 80.00th=[ 312476], 90.00th=[1954546], 95.00th=[1954546], | 99.00th=[1954546], 99.50th=[1954546], 99.90th=[1954546], | 99.95th=[1954546], 99.99th=[1954546] bw ( KiB/s): min= 2039, max= 4096, per=95.92%, avg=2795.00, stdev=978.52, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1099KiB/s (1125kB/s)(5120KiB/4660msec); 0 zone resets clat (msec): min=46, max=829, avg=327.50, stdev=295.10 lat (msec): min=46, max=829, avg=327.61, stdev=295.07 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 47], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 2039, max= 4087, per=66.74%, avg=2723.00, stdev=1181.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 50=8.33%, 100=8.33%, 250=25.00%, 500=33.33% lat (msec) : 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=12.11%, ctx=316, 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=178874: Mon May 18 06:56:42 2026 read: IOPS=0, BW=291KiB/s (298kB/s)(2048KiB/7026msec) clat (msec): min=276, max=826, avg=551.20, stdev=388.86 lat (msec): min=276, max=826, avg=551.21, stdev=388.86 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 827], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1726, max= 1996, per=63.86%, avg=1861.00, stdev=190.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1457KiB/s (1492kB/s)(10.0MiB/7026msec); 0 zone resets clat (msec): min=151, max=1797, avg=582.90, stdev=503.51 lat (msec): min=151, max=1797, avg=583.32, stdev=503.43 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 161], | 30.00th=[ 192], 40.00th=[ 222], 50.00th=[ 468], 60.00th=[ 472], | 70.00th=[ 743], 80.00th=[ 810], 90.00th=[ 818], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 1939, max= 4087, per=79.52%, avg=3244.60, stdev=1146.75, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=25.00%, 750=8.33%, 1000=25.00%, 2000=8.33% cpu : usr=0.06%, sys=9.45%, ctx=149, 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=178877: Mon May 18 06:56:42 2026 read: IOPS=1, BW=1329KiB/s (1361kB/s)(6144KiB/4624msec) clat (usec): min=665, max=533122, avg=219146.50, stdev=226427.09 lat (usec): min=667, max=533135, avg=219150.13, stdev=226430.11 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 4424], | 30.00th=[ 4424], 40.00th=[158335], 50.00th=[158335], 60.00th=[160433], | 70.00th=[459277], 80.00th=[459277], 90.00th=[534774], 95.00th=[534774], | 99.00th=[534774], 99.50th=[534774], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 2043, max= 4096, per=100.00%, avg=3406.00, stdev=1180.42, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1329KiB/s (1361kB/s)(6144KiB/4624msec); 0 zone resets clat (msec): min=111, max=1701, avg=541.32, stdev=598.74 lat (msec): min=111, max=1701, avg=541.43, stdev=598.76 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 253], 50.00th=[ 253], 60.00th=[ 351], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 1996, max= 4079, per=59.83%, avg=2441.00, stdev=915.90, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=9.45%, ctx=114, 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=178879: Mon May 18 06:56:42 2026 read: IOPS=0, BW=749KiB/s (767kB/s)(5120KiB/6833msec) clat (usec): min=575, max=913125, avg=405673.18, stdev=330667.65 lat (usec): min=576, max=913127, avg=405674.54, stdev=330667.66 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 578], | 30.00th=[283116], 40.00th=[283116], 50.00th=[392168], 60.00th=[392168], | 70.00th=[438305], 80.00th=[438305], 90.00th=[910164], 95.00th=[910164], | 99.00th=[910164], 99.50th=[910164], 99.90th=[910164], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 1943, max= 4096, per=92.45%, avg=2694.00, stdev=1215.20, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1049KiB/s (1074kB/s)(7168KiB/6833msec); 0 zone resets clat (msec): min=212, max=1880, avg=675.92, stdev=586.37 lat (msec): min=212, max=1880, avg=676.08, stdev=586.35 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 224], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 531], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 835], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 1595, max= 4087, per=67.74%, avg=2763.80, stdev=1213.88, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=33.33%, 750=8.33%, 1000=25.00%, 2000=8.33% cpu : usr=0.01%, sys=8.42%, ctx=182, 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=2915KiB/s (2985kB/s), 291KiB/s-1538KiB/s (298kB/s-1575kB/s), io=20.0MiB (20.0MB), run=4624-7026msec WRITE: bw=4081KiB/s (4179kB/s), 1049KiB/s-1457KiB/s (1074kB/s-1492kB/s), io=28.0MiB (29.4MB), run=4624-7026msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178873: Mon May 18 06:56:43 2026 read: IOPS=0, BW=946KiB/s (968kB/s)(7168KiB/7580msec) clat (msec): min=118, max=1951, avg=657.12, stdev=661.41 lat (msec): min=118, max=1951, avg=657.12, stdev=661.41 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 174], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 338], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 1053], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 2023, max= 2963, per=83.61%, avg=2218.20, stdev=416.40, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=675KiB/s (692kB/s)(5120KiB/7580msec); 0 zone resets clat (msec): min=452, max=937, avg=573.68, stdev=204.96 lat (msec): min=452, max=940, avg=574.59, stdev=206.38 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 472], 40.00th=[ 472], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 2031, max= 2043, per=54.78%, avg=2035.00, stdev= 5.66, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33%, 2000=16.67% cpu : usr=0.00%, sys=2.96%, ctx=89, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178875: Mon May 18 06:56:43 2026 read: IOPS=0, BW=327KiB/s (335kB/s)(2048KiB/6264msec) clat (msec): min=176, max=918, avg=547.53, stdev=524.58 lat (msec): min=176, max=918, avg=547.54, stdev=524.58 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 178], 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= 1654, max= 1855, per=66.13%, avg=1754.50, stdev=142.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1635KiB/s (1674kB/s)(10.0MiB/6264msec); 0 zone resets clat (msec): min=116, max=1602, avg=508.05, stdev=411.93 lat (msec): min=116, max=1602, avg=508.64, stdev=411.80 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 245], | 30.00th=[ 317], 40.00th=[ 380], 50.00th=[ 397], 60.00th=[ 414], | 70.00th=[ 443], 80.00th=[ 498], 90.00th=[ 676], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 2031, max= 4079, per=70.49%, avg=2618.57, stdev=992.23, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.03%, sys=2.17%, ctx=52, 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=178876: Mon May 18 06:56:43 2026 read: IOPS=0, BW=827KiB/s (847kB/s)(6144KiB/7431msec) clat (msec): min=183, max=950, avg=379.75, stdev=307.09 lat (msec): min=183, max=950, avg=379.75, stdev=307.09 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 220], | 70.00th=[ 518], 80.00th=[ 518], 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= 1805, max= 4063, per=93.65%, avg=2484.50, stdev=1057.90, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=827KiB/s (847kB/s)(6144KiB/7431msec); 0 zone resets clat (msec): min=110, max=1921, avg=843.24, stdev=670.00 lat (msec): min=110, max=1921, avg=843.40, stdev=669.99 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 1062], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 2023, max= 2043, per=54.69%, avg=2031.67, stdev= 6.89, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=41.67%, 500=16.67%, 750=8.33%, 1000=8.33%, 2000=25.00% cpu : usr=0.00%, sys=2.15%, ctx=65, 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=178878: Mon May 18 06:56:43 2026 read: IOPS=0, BW=663KiB/s (679kB/s)(5120KiB/7717msec) clat (msec): min=112, max=628, avg=308.30, stdev=251.39 lat (msec): min=112, max=628, avg=308.30, stdev=251.39 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2043, max= 6095, per=100.00%, avg=4069.00, stdev=2865.20, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=0, BW=929KiB/s (951kB/s)(7168KiB/7717msec); 0 zone resets clat (msec): min=183, max=1879, avg=844.86, stdev=573.09 lat (msec): min=183, max=1879, avg=844.96, stdev=573.07 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 218], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 835], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 1083], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 1805, max= 2043, per=53.45%, avg=1985.80, stdev=101.35, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 750=16.67%, 1000=25.00%, 2000=16.67% cpu : usr=0.04%, sys=4.00%, ctx=104, 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=2654KiB/s (2718kB/s), 327KiB/s-946KiB/s (335kB/s-968kB/s), io=20.0MiB (20.0MB), run=6264-7717msec WRITE: bw=3715KiB/s (3805kB/s), 675KiB/s-1635KiB/s (692kB/s-1674kB/s), io=28.0MiB (29.4MB), run=6264-7717msec 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=178889: Mon May 18 06:57:03 2026 read: IOPS=0, BW=3243KiB/s (3321kB/s)(12.0MiB/3789msec) clat (msec): min=1063, max=1324, avg=1213.52, stdev=135.17 lat (msec): min=1063, max=1324, avg=1213.53, stdev=135.17 clat percentiles (msec): | 1.00th=[ 1062], 5.00th=[ 1062], 10.00th=[ 1062], 20.00th=[ 1062], | 30.00th=[ 1062], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8047, max= 8159, per=100.00%, avg=8103.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.05%, sys=2.46%, ctx=38, 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=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=178890: Mon May 18 06:57:03 2026 read: IOPS=0, BW=1012KiB/s (1036kB/s)(4096KiB/4049msec) clat (nsec): min=1775.6M, max=1775.6M, avg=1775592712.00, stdev= 0.00 lat (nsec): min=1775.6M, max=1775.6M, avg=1775598282.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1770], 5.00th=[ 1770], 10.00th=[ 1770], 20.00th=[ 1770], | 30.00th=[ 1770], 40.00th=[ 1770], 50.00th=[ 1770], 60.00th=[ 1770], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2023KiB/s (2072kB/s)(8192KiB/4049msec); 0 zone resets clat (msec): min=1015, max=1061, avg=1038.49, stdev=32.49 lat (msec): min=1016, max=1061, avg=1039.00, stdev=32.34 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.15%, sys=2.89%, ctx=54, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178891: Mon May 18 06:57:03 2026 write: IOPS=0, BW=2621KiB/s (2683kB/s)(12.0MiB/4689msec); 0 zone resets clat (msec): min=243, max=3893, avg=1525.02, stdev=2053.38 lat (msec): min=254, max=3893, avg=1529.10, stdev=2050.08 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 3910], 80.00th=[ 3910], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 8078, max= 8126, per=100.00%, avg=8102.00, stdev=33.94, 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=0.06%, sys=2.47%, ctx=66, 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=178892: Mon May 18 06:57:03 2026 write: IOPS=1, BW=4125KiB/s (4224kB/s)(12.0MiB/2979msec); 0 zone resets clat (msec): min=473, max=1735, avg=964.51, stdev=675.67 lat (msec): min=473, max=1735, avg=965.05, stdev=675.88 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7160, max= 8159, per=100.00%, avg=7659.50, stdev=706.40, 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=0.03%, sys=2.89%, ctx=48, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4046KiB/s (4144kB/s), 1012KiB/s-3243KiB/s (1036kB/s-3321kB/s), io=16.0MiB (16.8MB), run=3789-4049msec WRITE: bw=6988KiB/s (7156kB/s), 2023KiB/s-4125KiB/s (2072kB/s-4224kB/s), io=32.0MiB (33.6MB), run=2979-4689msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178893: Mon May 18 06:57:03 2026 read: IOPS=0, BW=3461KiB/s (3544kB/s)(12.0MiB/3550msec) clat (msec): min=824, max=1269, avg=1052.67, stdev=222.94 lat (msec): min=824, max=1269, avg=1052.67, stdev=222.94 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7907, max= 8031, per=100.00%, avg=7969.00, stdev=87.68, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.11%, sys=9.83%, ctx=229, 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=178894: Mon May 18 06:57:03 2026 read: IOPS=0, BW=1056KiB/s (1082kB/s)(4096KiB/3878msec) clat (nsec): min=1241.5M, max=1241.5M, avg=1241482016.00, stdev= 0.00 lat (nsec): min=1241.5M, max=1241.5M, avg=1241486412.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1234], 5.00th=[ 1234], 10.00th=[ 1234], 20.00th=[ 1234], | 30.00th=[ 1234], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 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= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2112KiB/s (2163kB/s)(8192KiB/3878msec); 0 zone resets clat (msec): min=814, max=1685, avg=1249.78, stdev=616.10 lat (msec): min=814, max=1689, avg=1251.99, stdev=618.46 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 1687], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] 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) : 1000=33.33%, 2000=66.67% cpu : usr=0.13%, sys=4.28%, ctx=106, 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=178895: Mon May 18 06:57:03 2026 write: IOPS=0, BW=2522KiB/s (2583kB/s)(12.0MiB/4872msec); 0 zone resets clat (msec): min=116, max=4288, avg=1553.39, stdev=2369.44 lat (msec): min=117, max=4288, avg=1553.94, stdev=2369.49 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 255], | 70.00th=[ 4279], 80.00th=[ 4279], 90.00th=[ 4279], 95.00th=[ 4279], | 99.00th=[ 4279], 99.50th=[ 4279], 99.90th=[ 4279], 99.95th=[ 4279], | 99.99th=[ 4279] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=2.18%, ctx=47, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178896: Mon May 18 06:57:03 2026 write: IOPS=0, BW=3735KiB/s (3825kB/s)(12.0MiB/3290msec); 0 zone resets clat (msec): min=782, max=1060, avg=953.49, stdev=149.91 lat (msec): min=782, max=1061, avg=954.07, stdev=149.92 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.15%, sys=3.53%, ctx=48, 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=4225KiB/s (4326kB/s), 1056KiB/s-3461KiB/s (1082kB/s-3544kB/s), io=16.0MiB (16.8MB), run=3550-3878msec WRITE: bw=6726KiB/s (6887kB/s), 2112KiB/s-3735KiB/s (2163kB/s-3825kB/s), io=32.0MiB (33.6MB), run=3290-4872msec