== sanity test 398b: DIO and buffer IO race ============== 03:10:09 (1787382609) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.08193 s, 8.3 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=146208: Sat Aug 22 03:12:47 2026 read: IOPS=10, BW=43.0KiB/s (44.1kB/s)(5992KiB/139221msec) clat (usec): min=34, max=503951, avg=46334.32, stdev=35329.71 lat (usec): min=34, max=503954, avg=46336.58, stdev=35329.04 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 68], 10.00th=[ 12518], 20.00th=[ 22414], | 30.00th=[ 28181], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[103285], | 99.00th=[156238], 99.50th=[183501], 99.90th=[346031], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 7, max= 103, per=25.35%, avg=42.83, stdev=18.41, samples=271 iops : min= 1, max= 25, avg=10.06, stdev= 4.65, samples=271 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6296KiB/139221msec); 0 zone resets clat (usec): min=1190, max=694060, avg=44219.58, stdev=46389.18 lat (usec): min=1190, max=694062, avg=44237.17, stdev=46402.10 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1565], 10.00th=[ 2409], 20.00th=[ 6259], | 30.00th=[ 12125], 40.00th=[ 23200], 50.00th=[ 33817], 60.00th=[ 43779], | 70.00th=[ 57410], 80.00th=[ 73925], 90.00th=[ 98042], 95.00th=[127402], | 99.00th=[196084], 99.50th=[221250], 99.90th=[442500], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 108, per=25.47%, avg=45.09, stdev=19.23, samples=271 iops : min= 1, max= 27, avg=10.63, stdev= 4.85, samples=271 lat (usec) : 50=0.33%, 100=3.58%, 250=0.13%, 500=0.03%, 750=0.10% lat (msec) : 2=4.46%, 4=3.19%, 10=6.41%, 20=9.28%, 50=36.69% lat (msec) : 100=27.96%, 250=7.62%, 500=0.16%, 750=0.07% cpu : usr=0.08%, sys=5.13%, ctx=6885, 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=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=146209: Sat Aug 22 03:12:47 2026 read: IOPS=10, BW=41.0KiB/s (42.0kB/s)(5940KiB/141487msec) clat (usec): min=34, max=629938, avg=47561.42, stdev=39157.05 lat (usec): min=35, max=629953, avg=47566.57, stdev=39154.89 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 70], 10.00th=[ 13173], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 33424], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[109577], | 99.00th=[162530], 99.50th=[250610], 99.90th=[396362], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 103, per=24.66%, avg=41.68, stdev=19.05, samples=277 iops : min= 1, max= 25, avg= 9.77, stdev= 4.81, samples=277 write: IOPS=11, BW=44.9KiB/s (45.9kB/s)(6348KiB/141487msec); 0 zone resets clat (usec): min=1091, max=593953, avg=44542.28, stdev=44133.13 lat (usec): min=1091, max=593955, avg=44546.62, stdev=44134.49 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1582], 10.00th=[ 2638], 20.00th=[ 6259], | 30.00th=[ 11731], 40.00th=[ 22414], 50.00th=[ 35390], 60.00th=[ 46924], | 70.00th=[ 59507], 80.00th=[ 74974], 90.00th=[ 99091], 95.00th=[126354], | 99.00th=[179307], 99.50th=[210764], 99.90th=[383779], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 7, max= 125, per=25.23%, avg=44.66, stdev=19.32, samples=277 iops : min= 1, max= 31, avg=10.51, stdev= 4.85, samples=277 lat (usec) : 50=0.29%, 100=3.16%, 250=0.46%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.07%, 4=3.39%, 10=6.90%, 20=9.02%, 50=35.45% lat (msec) : 100=28.61%, 250=8.14%, 500=0.29%, 750=0.07% cpu : usr=0.07%, sys=5.00%, ctx=6928, 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=146210: Sat Aug 22 03:12:47 2026 read: IOPS=10, BW=43.0KiB/s (44.1kB/s)(6028KiB/140057msec) clat (usec): min=32, max=513515, avg=44619.84, stdev=34270.62 lat (usec): min=32, max=513516, avg=44622.46, stdev=34270.27 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 9372], 20.00th=[ 21365], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[141558], 99.50th=[183501], 99.90th=[425722], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 7, max= 119, per=25.43%, avg=42.97, stdev=19.42, samples=273 iops : min= 1, max= 29, avg=10.08, stdev= 4.89, samples=273 write: IOPS=11, BW=44.7KiB/s (45.8kB/s)(6260KiB/140057msec); 0 zone resets clat (usec): min=1126, max=722877, avg=46354.11, stdev=49943.77 lat (usec): min=1127, max=722882, avg=46355.88, stdev=49943.85 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1549], 10.00th=[ 2409], 20.00th=[ 5407], | 30.00th=[ 11600], 40.00th=[ 23462], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 60031], 80.00th=[ 80217], 90.00th=[109577], 95.00th=[127402], | 99.00th=[202376], 99.50th=[240124], 99.90th=[509608], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 95, per=24.99%, avg=44.23, stdev=17.51, samples=275 iops : min= 1, max= 23, avg=10.41, stdev= 4.44, samples=275 lat (usec) : 50=0.46%, 100=3.48%, 250=0.55%, 500=0.07%, 750=0.03% lat (msec) : 2=4.33%, 4=3.65%, 10=6.51%, 20=9.02%, 50=36.10% lat (msec) : 100=26.86%, 250=8.63%, 500=0.23%, 750=0.10% cpu : usr=0.07%, sys=4.88%, ctx=6720, 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=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=146211: Sat Aug 22 03:12:47 2026 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(6052KiB/140141msec) clat (usec): min=36, max=224291, avg=45838.13, stdev=30798.11 lat (usec): min=37, max=224293, avg=45845.68, stdev=30795.31 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 12387], 20.00th=[ 23200], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[101188], | 99.00th=[147850], 99.50th=[166724], 99.90th=[210764], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 7, max= 103, per=25.59%, avg=43.25, stdev=17.60, samples=272 iops : min= 1, max= 25, avg=10.16, stdev= 4.43, samples=272 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(6236KiB/140141msec); 0 zone resets clat (usec): min=1109, max=876774, avg=45247.50, stdev=52324.33 lat (usec): min=1109, max=876777, avg=45250.09, stdev=52324.34 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1582], 10.00th=[ 2769], 20.00th=[ 5997], | 30.00th=[ 10945], 40.00th=[ 21103], 50.00th=[ 32113], 60.00th=[ 43779], | 70.00th=[ 58459], 80.00th=[ 76022], 90.00th=[105382], 95.00th=[131597], | 99.00th=[187696], 99.50th=[219153], 99.90th=[616563], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 96, per=25.09%, avg=44.42, stdev=19.04, samples=273 iops : min= 1, max= 24, avg=10.45, stdev= 4.80, samples=273 lat (usec) : 50=0.49%, 100=3.45%, 250=0.26%, 500=0.10%, 750=0.13% lat (usec) : 1000=0.07% lat (msec) : 2=3.84%, 4=3.42%, 10=7.55%, 20=8.59%, 50=35.61% lat (msec) : 100=28.29%, 250=8.01%, 500=0.10%, 750=0.07%, 1000=0.03% cpu : usr=0.07%, sys=4.90%, ctx=6727, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=170KiB/s (174kB/s), 41.0KiB/s-43.2KiB/s (42.0kB/s-44.2kB/s), io=23.4MiB (24.6MB), run=139221-141487msec WRITE: bw=178KiB/s (182kB/s), 44.5KiB/s-45.2KiB/s (45.6kB/s-46.3kB/s), io=24.6MiB (25.7MB), run=139221-141487msec fio: pid=146206, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=146203: Sat Aug 22 03:14:48 2026 read: IOPS=5, BW=22.9KiB/s (23.4kB/s)(5992KiB/261849msec) clat (msec): min=5, max=1025, avg=38.24, stdev=47.52 lat (msec): min=5, max=1025, avg=38.24, stdev=47.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 54], 90.00th=[ 84], 95.00th=[ 115], | 99.00th=[ 194], 99.50th=[ 266], 99.90th=[ 456], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 103, per=32.36%, avg=25.56, stdev=17.99, samples=453 iops : min= 1, max= 25, avg= 5.75, stdev= 4.56, samples=453 write: IOPS=6, BW=24.0KiB/s (24.6kB/s)(6296KiB/261849msec); 0 zone resets clat (msec): min=35, max=899, avg=129.73, stdev=71.31 lat (msec): min=35, max=899, avg=129.74, stdev=71.31 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 110], 60.00th=[ 126], | 70.00th=[ 148], 80.00th=[ 176], 90.00th=[ 224], 95.00th=[ 268], | 99.00th=[ 380], 99.50th=[ 426], 99.90th=[ 558], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 56, per=28.76%, avg=23.87, stdev=12.10, samples=508 iops : min= 1, max= 14, avg= 5.32, stdev= 3.10, samples=508 lat (msec) : 10=2.67%, 20=17.71%, 50=18.52%, 100=28.35%, 250=29.17% lat (msec) : 500=3.48%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.50%, ctx=5573, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146204: Sat Aug 22 03:14:48 2026 read: IOPS=5, BW=22.6KiB/s (23.1kB/s)(5940KiB/263125msec) clat (msec): min=6, max=1169, avg=39.22, stdev=51.55 lat (msec): min=6, max=1169, avg=39.23, stdev=51.55 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 91], 95.00th=[ 120], | 99.00th=[ 186], 99.50th=[ 247], 99.90th=[ 642], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 95, per=32.62%, avg=25.77, stdev=17.28, samples=445 iops : min= 1, max= 23, avg= 5.80, stdev= 4.36, samples=445 write: IOPS=6, BW=24.1KiB/s (24.7kB/s)(6348KiB/263125msec); 0 zone resets clat (msec): min=34, max=790, avg=128.86, stdev=68.05 lat (msec): min=34, max=790, avg=128.87, stdev=68.05 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 77], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 110], 60.00th=[ 126], | 70.00th=[ 148], 80.00th=[ 176], 90.00th=[ 218], 95.00th=[ 262], | 99.00th=[ 342], 99.50th=[ 380], 99.90th=[ 550], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 55, per=29.00%, avg=24.07, stdev=11.86, samples=506 iops : min= 1, max= 13, avg= 5.37, stdev= 3.04, samples=506 lat (msec) : 10=3.48%, 20=16.76%, 50=18.42%, 100=28.13%, 250=29.72% lat (msec) : 500=3.32%, 750=0.10%, 1000=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.46%, ctx=5516, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146205: Sat Aug 22 03:14:48 2026 read: IOPS=5, BW=23.1KiB/s (23.7kB/s)(6028KiB/260495msec) clat (msec): min=5, max=683, avg=37.66, stdev=40.69 lat (msec): min=5, max=683, avg=37.67, stdev=40.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 110], | 99.00th=[ 184], 99.50th=[ 239], 99.90th=[ 351], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 102, per=31.56%, avg=24.93, stdev=17.36, samples=466 iops : min= 1, max= 25, avg= 5.59, stdev= 4.37, samples=466 write: IOPS=6, BW=24.0KiB/s (24.6kB/s)(6260KiB/260495msec); 0 zone resets clat (msec): min=32, max=1243, avg=129.94, stdev=73.49 lat (msec): min=32, max=1243, avg=129.94, stdev=73.49 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 96], 50.00th=[ 112], 60.00th=[ 128], | 70.00th=[ 148], 80.00th=[ 182], 90.00th=[ 224], 95.00th=[ 255], | 99.00th=[ 355], 99.50th=[ 372], 99.90th=[ 902], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 63, per=28.70%, avg=23.82, stdev=12.02, samples=505 iops : min= 1, max= 15, avg= 5.30, stdev= 3.07, samples=505 lat (msec) : 10=2.60%, 20=16.44%, 50=20.74%, 100=27.96%, 250=29.04% lat (msec) : 500=3.12%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.46%, ctx=5471, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=146206: Sat Aug 22 03:14:48 2026 read: IOPS=4, BW=17.3KiB/s (17.7kB/s)(2968KiB/171825msec) clat (msec): min=5, max=795, avg=55.13, stdev=53.14 lat (msec): min=5, max=795, avg=55.13, stdev=53.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 26], 40.00th=[ 34], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 63], 80.00th=[ 81], 90.00th=[ 114], 95.00th=[ 153], | 99.00th=[ 205], 99.50th=[ 247], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 79, per=25.76%, avg=20.35, stdev=13.69, samples=278 iops : min= 1, max= 19, avg= 4.41, stdev= 3.47, samples=278 write: IOPS=4, BW=17.9KiB/s (18.4kB/s)(3080KiB/171825msec); 0 zone resets clat (msec): min=37, max=1367, avg=169.58, stdev=85.46 lat (msec): min=37, max=1367, avg=169.58, stdev=85.46 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 85], 20.00th=[ 108], | 30.00th=[ 124], 40.00th=[ 140], 50.00th=[ 157], 60.00th=[ 176], | 70.00th=[ 194], 80.00th=[ 224], 90.00th=[ 268], 95.00th=[ 300], | 99.00th=[ 393], 99.50th=[ 477], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 47, per=21.21%, avg=17.61, stdev= 8.66, samples=331 iops : min= 1, max= 11, avg= 3.71, stdev= 2.23, samples=331 lat (msec) : 10=1.65%, 20=8.20%, 50=20.75%, 100=20.89%, 250=41.44% lat (msec) : 500=6.81%, 750=0.07%, 1000=0.07%, 2000=0.07% cpu : usr=0.03%, sys=1.08%, ctx=2214, 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=743,770,0,0 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=79.5KiB/s (81.4kB/s), 17.3KiB/s-23.1KiB/s (17.7kB/s-23.7kB/s), io=20.4MiB (21.4MB), run=171825-263125msec WRITE: bw=83.5KiB/s (85.6kB/s), 17.9KiB/s-24.1KiB/s (18.4kB/s-24.7kB/s), io=21.5MiB (22.5MB), run=171825-263125msec 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=146267: Sat Aug 22 03:15:34 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(5920KiB/34746msec) clat (usec): min=38, max=238368, avg=46354.83, stdev=37040.24 lat (usec): min=38, max=238369, avg=46356.32, stdev=37040.24 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 11338], | 30.00th=[ 27132], 40.00th=[ 33817], 50.00th=[ 41157], 60.00th=[ 50070], | 70.00th=[ 61604], 80.00th=[ 76022], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[173016], 99.50th=[200279], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 384, per=25.33%, avg=173.49, stdev=74.27, samples=67 iops : min= 1, max= 24, avg=10.07, stdev= 4.74, samples=67 write: IOPS=11, BW=183KiB/s (188kB/s)(6368KiB/34746msec); 0 zone resets clat (usec): min=1565, max=462487, avg=43348.06, stdev=52082.16 lat (usec): min=1566, max=462489, avg=43354.40, stdev=52079.75 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2638], 10.00th=[ 3785], 20.00th=[ 7308], | 30.00th=[ 12125], 40.00th=[ 18744], 50.00th=[ 27132], 60.00th=[ 40633], | 70.00th=[ 48497], 80.00th=[ 67634], 90.00th=[101188], 95.00th=[124257], | 99.00th=[240124], 99.50th=[450888], 99.90th=[463471], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 31, max= 443, per=25.83%, avg=186.27, stdev=86.72, samples=67 iops : min= 1, max= 27, avg=10.90, stdev= 5.46, samples=67 lat (usec) : 50=1.17%, 100=6.64%, 250=1.17%, 500=0.26% lat (msec) : 2=1.04%, 4=4.69%, 10=8.46%, 20=9.38%, 50=32.94% lat (msec) : 100=24.87%, 250=8.98%, 500=0.39% cpu : usr=0.07%, sys=5.41%, ctx=1630, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146268: Sat Aug 22 03:15:34 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5744KiB/34947msec) clat (usec): min=41, max=399104, avg=51337.96, stdev=39579.23 lat (usec): min=41, max=399106, avg=51352.30, stdev=39582.67 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 71], 10.00th=[ 82], 20.00th=[ 22152], | 30.00th=[ 31589], 40.00th=[ 39060], 50.00th=[ 46400], 60.00th=[ 56361], | 70.00th=[ 67634], 80.00th=[ 79168], 90.00th=[ 95945], 95.00th=[110625], | 99.00th=[158335], 99.50th=[202376], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 52, max= 349, per=23.94%, avg=164.00, stdev=66.14, samples=68 iops : min= 3, max= 21, avg= 9.49, stdev= 4.12, samples=68 write: IOPS=11, BW=187KiB/s (192kB/s)(6544KiB/34947msec); 0 zone resets clat (usec): min=1658, max=251059, avg=39668.50, stdev=40019.39 lat (usec): min=1660, max=251061, avg=39682.42, stdev=40022.55 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2507], 10.00th=[ 4146], 20.00th=[ 6718], | 30.00th=[ 10028], 40.00th=[ 17171], 50.00th=[ 25560], 60.00th=[ 36439], | 70.00th=[ 51119], 80.00th=[ 68682], 90.00th=[101188], 95.00th=[117965], | 99.00th=[147850], 99.50th=[223347], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 440, per=25.94%, avg=187.01, stdev=88.72, samples=68 iops : min= 1, max= 27, avg=10.94, stdev= 5.65, samples=68 lat (usec) : 50=0.65%, 100=4.56%, 250=1.56%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.30%, 4=3.78%, 10=10.94%, 20=8.72%, 50=29.69% lat (msec) : 100=29.30%, 250=8.72%, 500=0.26% cpu : usr=0.07%, sys=5.37%, ctx=1660, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146270: Sat Aug 22 03:15:34 2026 read: IOPS=11, BW=185KiB/s (190kB/s)(6256KiB/33784msec) clat (usec): min=40, max=255702, avg=48142.17, stdev=38641.97 lat (usec): min=40, max=255704, avg=48143.83, stdev=38641.98 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 65], 10.00th=[ 79], 20.00th=[ 2638], | 30.00th=[ 29230], 40.00th=[ 38011], 50.00th=[ 44827], 60.00th=[ 51643], | 70.00th=[ 63701], 80.00th=[ 72877], 90.00th=[ 88605], 95.00th=[119014], | 99.00th=[173016], 99.50th=[210764], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 31, max= 350, per=27.12%, avg=185.76, stdev=80.43, samples=66 iops : min= 1, max= 21, avg=10.85, stdev= 5.04, samples=66 write: IOPS=11, BW=179KiB/s (183kB/s)(6032KiB/33784msec); 0 zone resets clat (usec): min=1806, max=352237, avg=39341.03, stdev=45179.47 lat (usec): min=1808, max=352240, avg=39344.92, stdev=45178.98 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2409], 10.00th=[ 3818], 20.00th=[ 6128], | 30.00th=[ 9241], 40.00th=[ 13698], 50.00th=[ 22414], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 68682], 90.00th=[ 99091], 95.00th=[119014], | 99.00th=[191890], 99.50th=[274727], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 31, max= 445, per=24.76%, avg=178.48, stdev=78.22, samples=66 iops : min= 1, max= 27, avg=10.39, stdev= 4.93, samples=66 lat (usec) : 50=1.17%, 100=7.16%, 250=0.52%, 500=0.13%, 750=0.39% lat (usec) : 1000=0.13% lat (msec) : 2=1.69%, 4=4.17%, 10=11.20%, 20=8.59%, 50=30.47% lat (msec) : 100=25.65%, 250=8.33%, 500=0.39% cpu : usr=0.09%, sys=5.33%, ctx=1596, 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=146272: Sat Aug 22 03:15:34 2026 read: IOPS=11, BW=179KiB/s (184kB/s)(6032KiB/33649msec) clat (usec): min=37, max=215909, avg=48795.80, stdev=37202.72 lat (usec): min=37, max=215910, avg=48811.14, stdev=37193.07 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 67], 10.00th=[ 78], 20.00th=[ 16712], | 30.00th=[ 31065], 40.00th=[ 36963], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 62653], 80.00th=[ 76022], 90.00th=[ 94897], 95.00th=[114820], | 99.00th=[162530], 99.50th=[206570], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 320, per=25.99%, avg=178.00, stdev=74.46, samples=65 iops : min= 1, max= 20, avg=10.35, stdev= 4.72, samples=65 write: IOPS=11, BW=186KiB/s (190kB/s)(6256KiB/33649msec); 0 zone resets clat (usec): min=1578, max=261779, avg=38262.53, stdev=41694.93 lat (usec): min=1580, max=261781, avg=38268.02, stdev=41697.65 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2835], 10.00th=[ 4359], 20.00th=[ 6849], | 30.00th=[ 9372], 40.00th=[ 13829], 50.00th=[ 22152], 60.00th=[ 35914], | 70.00th=[ 47973], 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[115868], | 99.00th=[208667], 99.50th=[250610], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 61, max= 380, per=25.75%, avg=185.69, stdev=79.66, samples=65 iops : min= 3, max= 23, avg=10.86, stdev= 5.00, samples=65 lat (usec) : 50=0.91%, 100=6.64%, 250=0.91%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.04%, 4=3.39%, 10=12.76%, 20=8.85%, 50=29.95% lat (msec) : 100=26.56%, 250=8.33%, 500=0.26% cpu : usr=0.09%, sys=5.75%, ctx=1646, 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=685KiB/s (702kB/s), 164KiB/s-185KiB/s (168kB/s-190kB/s), io=23.4MiB (24.5MB), run=33649-34947msec WRITE: bw=721KiB/s (738kB/s), 179KiB/s-187KiB/s (183kB/s-192kB/s), io=24.6MiB (25.8MB), run=33649-34947msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146269: Sat Aug 22 03:16:11 2026 read: IOPS=5, BW=83.6KiB/s (85.6kB/s)(5920KiB/70837msec) clat (msec): min=6, max=471, avg=44.53, stdev=49.63 lat (msec): min=6, max=471, avg=44.53, stdev=49.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 58], 90.00th=[ 97], 95.00th=[ 144], | 99.00th=[ 220], 99.50th=[ 338], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 30, max= 319, per=28.23%, avg=94.85, stdev=57.46, samples=123 iops : min= 1, max= 19, avg= 5.14, stdev= 3.60, samples=123 write: IOPS=5, BW=89.9KiB/s (92.1kB/s)(6368KiB/70837msec); 0 zone resets clat (msec): min=33, max=591, avg=136.17, stdev=75.81 lat (msec): min=33, max=591, avg=136.18, stdev=75.81 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 60], 10.00th=[ 67], 20.00th=[ 78], | 30.00th=[ 89], 40.00th=[ 101], 50.00th=[ 117], 60.00th=[ 131], | 70.00th=[ 153], 80.00th=[ 184], 90.00th=[ 236], 95.00th=[ 292], | 99.00th=[ 418], 99.50th=[ 477], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 26, max= 223, per=25.44%, avg=90.07, stdev=49.42, samples=139 iops : min= 1, max= 13, avg= 4.83, stdev= 3.18, samples=139 lat (msec) : 10=1.43%, 20=13.41%, 50=23.31%, 100=26.56%, 250=30.34% lat (msec) : 500=4.82%, 750=0.13% cpu : usr=0.04%, sys=1.55%, ctx=1400, 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=146271: Sat Aug 22 03:16:11 2026 read: IOPS=5, BW=80.8KiB/s (82.7kB/s)(5744KiB/71127msec) clat (msec): min=6, max=294, avg=41.70, stdev=46.29 lat (msec): min=6, max=294, avg=41.70, stdev=46.29 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 94], 95.00th=[ 140], | 99.00th=[ 253], 99.50th=[ 271], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 27, max= 377, per=28.49%, avg=95.72, stdev=67.38, samples=117 iops : min= 1, max= 23, avg= 5.20, stdev= 4.23, samples=117 write: IOPS=5, BW=92.0KiB/s (94.2kB/s)(6544KiB/71127msec); 0 zone resets clat (msec): min=42, max=480, avg=136.21, stdev=73.50 lat (msec): min=42, max=480, avg=136.21, stdev=73.50 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 77], | 30.00th=[ 89], 40.00th=[ 102], 50.00th=[ 118], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 186], 90.00th=[ 247], 95.00th=[ 292], | 99.00th=[ 363], 99.50th=[ 388], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 31, max= 252, per=26.55%, avg=93.99, stdev=49.18, samples=136 iops : min= 1, max= 15, avg= 5.08, stdev= 3.17, samples=136 lat (msec) : 10=1.43%, 20=15.10%, 50=21.48%, 100=25.78%, 250=30.86% lat (msec) : 500=5.34% cpu : usr=0.04%, sys=1.46%, ctx=1350, 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=146273: Sat Aug 22 03:16:11 2026 read: IOPS=5, BW=89.3KiB/s (91.4kB/s)(6256KiB/70051msec) clat (msec): min=6, max=346, avg=40.49, stdev=42.25 lat (msec): min=6, max=346, avg=40.50, stdev=42.32 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 55], 90.00th=[ 79], 95.00th=[ 131], | 99.00th=[ 211], 99.50th=[ 271], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 319, per=29.63%, avg=99.54, stdev=72.79, samples=124 iops : min= 1, max= 19, avg= 5.44, stdev= 4.62, samples=124 write: IOPS=5, BW=86.1KiB/s (88.2kB/s)(6032KiB/70051msec); 0 zone resets clat (msec): min=40, max=466, avg=142.99, stdev=75.90 lat (msec): min=40, max=466, avg=142.99, stdev=75.89 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 108], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 161], 80.00th=[ 194], 90.00th=[ 251], 95.00th=[ 305], | 99.00th=[ 372], 99.50th=[ 418], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 27, max= 192, per=24.31%, avg=86.05, stdev=44.35, samples=137 iops : min= 1, max= 12, avg= 4.58, stdev= 2.85, samples=137 lat (msec) : 10=1.69%, 20=15.76%, 50=23.31%, 100=23.70%, 250=30.34% lat (msec) : 500=5.21% cpu : usr=0.04%, sys=1.44%, ctx=1373, 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=146274: Sat Aug 22 03:16:11 2026 read: IOPS=5, BW=85.0KiB/s (87.1kB/s)(6032KiB/70933msec) clat (msec): min=6, max=501, avg=43.64, stdev=48.35 lat (msec): min=6, max=501, avg=43.64, stdev=48.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 62], 90.00th=[ 106], 95.00th=[ 133], | 99.00th=[ 211], 99.50th=[ 264], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 30, max= 288, per=29.96%, avg=100.65, stdev=66.70, samples=117 iops : min= 1, max= 18, avg= 5.52, stdev= 4.25, samples=117 write: IOPS=5, BW=88.2KiB/s (90.3kB/s)(6256KiB/70933msec); 0 zone resets clat (msec): min=43, max=493, avg=138.27, stdev=74.56 lat (msec): min=43, max=493, avg=138.27, stdev=74.56 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 82], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 118], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 190], 90.00th=[ 234], 95.00th=[ 296], | 99.00th=[ 414], 99.50th=[ 485], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 27, max= 224, per=25.36%, avg=89.79, stdev=46.79, samples=137 iops : min= 1, max= 14, avg= 4.81, stdev= 3.02, samples=137 lat (msec) : 10=1.43%, 20=16.41%, 50=20.05%, 100=26.04%, 250=31.64% lat (msec) : 500=4.30%, 750=0.13% cpu : usr=0.04%, sys=1.50%, ctx=1399, 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=337KiB/s (345kB/s), 80.8KiB/s-89.3KiB/s (82.7kB/s-91.4kB/s), io=23.4MiB (24.5MB), run=70051-71127msec WRITE: bw=354KiB/s (363kB/s), 86.1KiB/s-92.0KiB/s (88.2kB/s-94.2kB/s), io=24.6MiB (25.8MB), run=70051-71127msec 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=146295: Sat Aug 22 03:16:23 2026 read: IOPS=2, BW=2462KiB/s (2521kB/s)(7168KiB/2912msec) clat (usec): min=609, max=307231, avg=194435.92, stdev=101773.77 lat (usec): min=610, max=307232, avg=194437.17, stdev=101773.84 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[133694], | 30.00th=[193987], 40.00th=[193987], 50.00th=[210764], 60.00th=[254804], | 70.00th=[254804], 80.00th=[261096], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 2043, max= 4458, per=53.19%, avg=2648.00, stdev=1206.67, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1758KiB/s (1800kB/s)(5120KiB/2912msec); 0 zone resets clat (msec): min=111, max=393, avg=308.33, stdev=118.48 lat (msec): min=113, max=396, avg=309.39, stdev=118.57 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 1992, max= 2048, per=29.15%, avg=2031.50, stdev=26.44, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=58.33% cpu : usr=0.00%, sys=16.18%, ctx=296, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146296: Sat Aug 22 03:16:23 2026 read: IOPS=0, BW=498KiB/s (510kB/s)(2048KiB/4114msec) clat (usec): min=504, max=289031, avg=144767.87, stdev=204019.20 lat (usec): min=505, max=289032, avg=144769.39, stdev=204019.29 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[287310], | 70.00th=[287310], 80.00th=[287310], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 1471, max= 2048, per=35.35%, avg=1759.50, stdev=408.00, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2489KiB/s (2549kB/s)(10.0MiB/4114msec); 0 zone resets clat (msec): min=172, max=800, avg=381.97, stdev=238.78 lat (msec): min=172, max=800, avg=382.20, stdev=238.80 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 186], | 30.00th=[ 188], 40.00th=[ 201], 50.00th=[ 222], 60.00th=[ 368], | 70.00th=[ 405], 80.00th=[ 531], 90.00th=[ 751], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1992, max= 4087, per=38.86%, avg=2708.00, stdev=1059.09, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=14.83%, ctx=132, 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=146297: Sat Aug 22 03:16:23 2026 read: IOPS=2, BW=2051KiB/s (2100kB/s)(6144KiB/2996msec) clat (usec): min=507, max=352072, avg=145810.39, stdev=169935.66 lat (usec): min=509, max=352073, avg=145811.78, stdev=169935.70 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 922], | 30.00th=[ 922], 40.00th=[ 2114], 50.00th=[ 2114], 60.00th=[179307], | 70.00th=[341836], 80.00th=[341836], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 3984, max= 4087, per=81.07%, avg=4035.50, stdev=72.83, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2051KiB/s (2100kB/s)(6144KiB/2996msec); 0 zone resets clat (msec): min=176, max=549, avg=352.95, stdev=182.38 lat (msec): min=176, max=549, avg=353.06, stdev=182.32 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 498], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1992, max= 2994, per=32.56%, avg=2269.25, stdev=483.83, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=13.69%, ctx=151, 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=146298: Sat Aug 22 03:16:23 2026 read: IOPS=1, BW=1831KiB/s (1875kB/s)(5120KiB/2796msec) clat (usec): min=625, max=272602, avg=91722.12, stdev=113346.89 lat (usec): min=626, max=272603, avg=91723.38, stdev=113346.93 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[ 627], | 30.00th=[ 2638], 40.00th=[ 2638], 50.00th=[ 56361], 60.00th=[ 56361], | 70.00th=[126354], 80.00th=[126354], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 3984, max= 4087, per=81.07%, avg=4035.50, stdev=72.83, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2564KiB/s (2625kB/s)(7168KiB/2796msec); 0 zone resets clat (msec): min=141, max=454, avg=332.97, stdev=108.09 lat (msec): min=141, max=454, avg=333.06, stdev=108.11 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 284], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 309], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 422], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1490, max= 4087, per=33.46%, avg=2332.00, stdev=1008.56, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=16.67%, 500=58.33% cpu : usr=0.00%, sys=16.64%, ctx=99, 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=4978KiB/s (5098kB/s), 498KiB/s-2462KiB/s (510kB/s-2521kB/s), io=20.0MiB (20.0MB), run=2796-4114msec WRITE: bw=6969KiB/s (7137kB/s), 1758KiB/s-2564KiB/s (1800kB/s-2625kB/s), io=28.0MiB (29.4MB), run=2796-4114msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146290: Sat Aug 22 03:16:23 2026 read: IOPS=2, BW=2057KiB/s (2106kB/s)(7168KiB/3485msec) clat (msec): min=75, max=250, avg=136.70, stdev=57.75 lat (msec): min=75, max=250, avg=136.71, stdev=57.75 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 106], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 118], 60.00th=[ 120], | 70.00th=[ 120], 80.00th=[ 171], 90.00th=[ 251], 95.00th=[ 251], | 99.00th=[ 251], 99.50th=[ 251], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 1882, max= 5618, per=72.80%, avg=3167.67, stdev=2122.91, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1469KiB/s (1504kB/s)(5120KiB/3485msec); 0 zone resets clat (msec): min=138, max=828, avg=483.41, stdev=248.60 lat (msec): min=138, max=828, avg=483.54, stdev=248.60 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 535], 80.00th=[ 535], 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= 1404, max= 2039, per=30.06%, avg=1831.20, stdev=253.35, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.03%, sys=5.42%, ctx=56, 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=146291: Sat Aug 22 03:16:23 2026 read: IOPS=0, BW=446KiB/s (456kB/s)(2048KiB/4595msec) clat (msec): min=103, max=119, avg=111.38, stdev=11.63 lat (msec): min=103, max=119, avg=111.39, stdev=11.63 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 121], | 70.00th=[ 121], 80.00th=[ 121], 90.00th=[ 121], 95.00th=[ 121], | 99.00th=[ 121], 99.50th=[ 121], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 1440, max= 1882, per=38.18%, avg=1661.00, stdev=312.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2229KiB/s (2282kB/s)(10.0MiB/4595msec); 0 zone resets clat (msec): min=141, max=868, avg=420.94, stdev=263.73 lat (msec): min=141, max=868, avg=421.03, stdev=263.73 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 171], | 30.00th=[ 190], 40.00th=[ 259], 50.00th=[ 275], 60.00th=[ 359], | 70.00th=[ 523], 80.00th=[ 693], 90.00th=[ 735], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 1440, max= 6131, per=40.61%, avg=2474.00, stdev=1625.29, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.04%, sys=5.44%, ctx=82, 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=146292: Sat Aug 22 03:16:23 2026 read: IOPS=1, BW=1306KiB/s (1337kB/s)(6144KiB/4706msec) clat (msec): min=119, max=1002, avg=394.09, stdev=347.21 lat (msec): min=119, max=1002, avg=394.09, stdev=347.21 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 271], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1831, max= 2043, per=45.72%, avg=1989.40, stdev=89.92, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1306KiB/s (1337kB/s)(6144KiB/4706msec); 0 zone resets clat (msec): min=156, max=666, avg=368.50, stdev=221.55 lat (msec): min=156, max=666, avg=368.60, stdev=221.55 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 426], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 2000, max= 4376, per=46.00%, avg=2802.33, stdev=1362.92, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=3.19%, ctx=64, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146293: Sat Aug 22 03:16:23 2026 read: IOPS=1, BW=1242KiB/s (1272kB/s)(5120KiB/4123msec) clat (msec): min=87, max=664, avg=329.90, stdev=272.89 lat (msec): min=87, max=664, avg=329.90, stdev=272.89 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 88], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 4000, max= 4079, per=92.84%, avg=4039.50, stdev=55.86, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1739KiB/s (1780kB/s)(7168KiB/4123msec); 0 zone resets clat (msec): min=155, max=673, avg=350.82, stdev=192.79 lat (msec): min=155, max=673, avg=350.89, stdev=192.80 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 220], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 296], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 567], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1831, max= 2876, per=35.87%, avg=2185.25, stdev=468.91, 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=5.12%, ctx=128, 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=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=4352KiB/s (4456kB/s), 446KiB/s-2057KiB/s (456kB/s-2106kB/s), io=20.0MiB (20.0MB), run=3485-4706msec WRITE: bw=6093KiB/s (6239kB/s), 1306KiB/s-2229KiB/s (1337kB/s-2282kB/s), io=28.0MiB (29.4MB), run=3485-4706msec 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=146305: Sat Aug 22 03:16:40 2026 read: IOPS=0, BW=2027KiB/s (2075kB/s)(12.0MiB/6063msec) clat (msec): min=540, max=3812, avg=1931.02, stdev=1690.74 lat (msec): min=540, max=3812, avg=1931.02, stdev=1690.74 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 3809], 80.00th=[ 3809], 90.00th=[ 3809], 95.00th=[ 3809], | 99.00th=[ 3809], 99.50th=[ 3809], 99.90th=[ 3809], 99.95th=[ 3809], | 99.99th=[ 3809] bw ( KiB/s): min= 8094, max= 8175, per=100.00%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.88%, ctx=55, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146306: Sat Aug 22 03:16:40 2026 read: IOPS=0, BW=666KiB/s (682kB/s)(4096KiB/6151msec) clat (nsec): min=4020.2M, max=4020.2M, avg=4020223431.00, stdev= 0.00 lat (nsec): min=4020.2M, max=4020.2M, avg=4020225812.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4010], 5.00th=[ 4010], 10.00th=[ 4010], 20.00th=[ 4010], | 30.00th=[ 4010], 40.00th=[ 4010], 50.00th=[ 4010], 60.00th=[ 4010], | 70.00th=[ 4010], 80.00th=[ 4010], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] 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=1332KiB/s (1364kB/s)(8192KiB/6151msec); 0 zone resets clat (msec): min=395, max=1468, avg=931.91, stdev=758.33 lat (msec): min=396, max=1468, avg=932.52, stdev=758.54 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.97%, ctx=62, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146307: Sat Aug 22 03:16:40 2026 write: IOPS=0, BW=2144KiB/s (2195kB/s)(12.0MiB/5732msec); 0 zone resets clat (msec): min=725, max=3388, avg=1843.30, stdev=1381.59 lat (msec): min=726, max=3388, avg=1843.75, stdev=1381.60 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 8094, max= 8175, per=100.00%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=4.59%, ctx=95, 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=146308: Sat Aug 22 03:16:40 2026 write: IOPS=0, BW=2427KiB/s (2486kB/s)(12.0MiB/5062msec); 0 zone resets clat (msec): min=263, max=3125, avg=1589.43, stdev=1442.43 lat (msec): min=265, max=3126, avg=1590.39, stdev=1441.72 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 5527, max= 8094, per=100.00%, avg=6810.50, stdev=1815.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.77%, ctx=68, 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=2664KiB/s (2728kB/s), 666KiB/s-2027KiB/s (682kB/s-2075kB/s), io=16.0MiB (16.8MB), run=6063-6151msec WRITE: bw=5327KiB/s (5455kB/s), 1332KiB/s-2427KiB/s (1364kB/s-2486kB/s), io=32.0MiB (33.6MB), run=5062-6151msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146309: Sat Aug 22 03:16:41 2026 read: IOPS=0, BW=2339KiB/s (2395kB/s)(12.0MiB/5253msec) clat (msec): min=769, max=3484, avg=1725.92, stdev=1524.98 lat (msec): min=769, max=3484, avg=1725.92, stdev=1524.98 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 3473], 80.00th=[ 3473], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 7892, max= 8110, per=100.00%, avg=8001.00, stdev=154.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=6.80%, ctx=242, 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=146310: Sat Aug 22 03:16:41 2026 read: IOPS=0, BW=725KiB/s (743kB/s)(4096KiB/5646msec) clat (nsec): min=3600.2M, max=3600.2M, avg=3600247325.00, stdev= 0.00 lat (nsec): min=3600.2M, max=3600.2M, avg=3600250233.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3608], 5.00th=[ 3608], 10.00th=[ 3608], 20.00th=[ 3608], | 30.00th=[ 3608], 40.00th=[ 3608], 50.00th=[ 3608], 60.00th=[ 3608], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1451KiB/s (1486kB/s)(8192KiB/5646msec); 0 zone resets clat (msec): min=394, max=1552, avg=973.60, stdev=819.26 lat (msec): min=394, max=1553, avg=973.85, stdev=819.38 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=5.28%, ctx=585, 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=146311: Sat Aug 22 03:16:41 2026 write: IOPS=0, BW=1916KiB/s (1962kB/s)(12.0MiB/6413msec); 0 zone resets clat (msec): min=276, max=4392, avg=2117.99, stdev=2091.74 lat (msec): min=277, max=4393, avg=2118.42, stdev=2091.96 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 1687], 50.00th=[ 1687], 60.00th=[ 1687], | 70.00th=[ 4396], 80.00th=[ 4396], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.70%, ctx=45, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146312: Sat Aug 22 03:16:41 2026 write: IOPS=0, BW=2376KiB/s (2433kB/s)(12.0MiB/5172msec); 0 zone resets clat (msec): min=448, max=3415, avg=1669.31, stdev=1551.51 lat (msec): min=449, max=3417, avg=1670.13, stdev=1552.28 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 3406], 80.00th=[ 3406], 90.00th=[ 3406], 95.00th=[ 3406], | 99.00th=[ 3406], 99.50th=[ 3406], 99.90th=[ 3406], 99.95th=[ 3406], | 99.99th=[ 3406] bw ( KiB/s): min= 7968, max= 8159, per=100.00%, avg=8063.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.48%, ctx=52, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2902KiB/s (2972kB/s), 725KiB/s-2339KiB/s (743kB/s-2395kB/s), io=16.0MiB (16.8MB), run=5253-5646msec WRITE: bw=5110KiB/s (5232kB/s), 1451KiB/s-2376KiB/s (1486kB/s-2433kB/s), io=32.0MiB (33.6MB), run=5172-6413msec