== sanity test 398b: DIO and buffer IO race ============== 03:56:57 (1787126217) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.16239 s, 7.0 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=178950: Wed Aug 19 03:59:26 2026 read: IOPS=11, BW=46.9KiB/s (47.0kB/s)(5992KiB/127838msec) clat (usec): min=34, max=1004.7k, avg=47013.27, stdev=39263.47 lat (usec): min=34, max=1004.7k, avg=47015.85, stdev=39263.68 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11469], 10.00th=[ 17695], | 20.00th=[ 22676], 30.00th=[ 28443], 40.00th=[ 34341], | 50.00th=[ 40109], 60.00th=[ 45876], 70.00th=[ 55313], | 80.00th=[ 65799], 90.00th=[ 84411], 95.00th=[ 107480], | 99.00th=[ 158335], 99.50th=[ 179307], 99.90th=[ 261096], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 5, max= 111, per=25.00%, avg=46.75, stdev=18.93, samples=250 iops : min= 1, max= 27, avg=11.01, stdev= 4.74, samples=250 write: IOPS=12, BW=49.2KiB/s (50.4kB/s)(6296KiB/127838msec); 0 zone resets clat (usec): min=837, max=267547, avg=36122.98, stdev=37268.42 lat (usec): min=838, max=267549, avg=36127.43, stdev=37271.22 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1631], 20.00th=[ 4080], | 30.00th=[ 8455], 40.00th=[ 17433], 50.00th=[ 26608], 60.00th=[ 34866], | 70.00th=[ 45351], 80.00th=[ 60031], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[162530], 99.50th=[191890], 99.90th=[261096], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 135, per=25.06%, avg=49.12, stdev=23.16, samples=250 iops : min= 1, max= 33, avg=11.61, stdev= 5.80, samples=250 lat (usec) : 50=0.16%, 100=1.60%, 250=0.13%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.18%, 4=3.71%, 10=6.67%, 20=10.06%, 50=39.97% lat (msec) : 100=24.90%, 250=6.32%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=4.69%, ctx=6336, 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=178953: Wed Aug 19 03:59:26 2026 read: IOPS=11, BW=47.1KiB/s (48.2kB/s)(5940KiB/126143msec) clat (usec): min=46, max=245998, avg=45451.49, stdev=29130.56 lat (usec): min=46, max=245999, avg=45452.83, stdev=29130.60 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 11994], 10.00th=[ 17171], 20.00th=[ 22414], | 30.00th=[ 27657], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 54264], 80.00th=[ 65799], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[145753], 99.50th=[162530], 99.90th=[196084], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 7, max= 103, per=25.10%, avg=46.94, stdev=20.03, samples=246 iops : min= 1, max= 25, avg=11.05, stdev= 5.02, samples=246 write: IOPS=12, BW=50.3KiB/s (51.5kB/s)(6348KiB/126143msec); 0 zone resets clat (usec): min=1012, max=1078.7k, avg=36664.85, stdev=46409.31 lat (usec): min=1013, max=1078.7k, avg=36672.93, stdev=46407.77 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1500], | 20.00th=[ 3654], 30.00th=[ 7439], 40.00th=[ 15664], | 50.00th=[ 25035], 60.00th=[ 35390], 70.00th=[ 45351], | 80.00th=[ 61604], 90.00th=[ 87557], 95.00th=[ 112722], | 99.00th=[ 170918], 99.50th=[ 193987], 99.90th=[ 287310], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 118, per=25.43%, avg=49.84, stdev=22.15, samples=247 iops : min= 1, max= 29, avg=11.79, stdev= 5.57, samples=247 lat (usec) : 50=0.03%, 100=1.69%, 250=0.10%, 1000=0.03% lat (msec) : 2=6.80%, 4=4.10%, 10=6.77%, 20=11.00%, 50=37.92% lat (msec) : 100=25.55%, 250=5.92%, 500=0.03%, 2000=0.03% cpu : usr=0.06%, sys=4.67%, ctx=6404, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178955: Wed Aug 19 03:59:26 2026 read: IOPS=12, BW=48.4KiB/s (49.5kB/s)(6028KiB/124653msec) clat (usec): min=41, max=228300, avg=45432.91, stdev=29518.08 lat (usec): min=41, max=228302, avg=45436.07, stdev=29518.15 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11207], 10.00th=[ 17433], 20.00th=[ 22938], | 30.00th=[ 27919], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 54264], 80.00th=[ 65799], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[141558], 99.50th=[183501], 99.90th=[208667], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 103, per=25.62%, avg=47.90, stdev=18.98, samples=244 iops : min= 1, max= 25, avg=11.30, stdev= 4.76, samples=244 write: IOPS=12, BW=50.2KiB/s (51.4kB/s)(6260KiB/124653msec); 0 zone resets clat (usec): min=938, max=981801, avg=35576.16, stdev=43929.88 lat (usec): min=939, max=981807, avg=35590.68, stdev=43925.82 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1319], 10.00th=[ 1483], 20.00th=[ 3490], | 30.00th=[ 7635], 40.00th=[ 15401], 50.00th=[ 24249], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 61604], 90.00th=[ 84411], 95.00th=[107480], | 99.00th=[168821], 99.50th=[185598], 99.90th=[235930], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 127, per=25.38%, avg=49.74, stdev=22.75, samples=244 iops : min= 1, max= 31, avg=11.76, stdev= 5.70, samples=244 lat (usec) : 50=0.16%, 100=1.69%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=7.00%, 4=4.20%, 10=6.35%, 20=10.38%, 50=39.45% lat (msec) : 100=24.93%, 250=5.57%, 1000=0.03% cpu : usr=0.07%, sys=4.63%, ctx=6230, 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=178956: Wed Aug 19 03:59:26 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6052KiB/127703msec) clat (usec): min=34, max=1090.2k, avg=47682.30, stdev=40801.48 lat (usec): min=35, max=1090.2k, avg=47684.73, stdev=40801.66 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12518], 10.00th=[ 17695], | 20.00th=[ 23462], 30.00th=[ 28967], 40.00th=[ 34866], | 50.00th=[ 40633], 60.00th=[ 47449], 70.00th=[ 55837], | 80.00th=[ 66847], 90.00th=[ 84411], 95.00th=[ 102237], | 99.00th=[ 158335], 99.50th=[ 196084], 99.90th=[ 316670], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 128, per=25.17%, avg=47.06, stdev=19.77, samples=251 iops : min= 1, max= 32, avg=11.10, stdev= 4.98, samples=251 write: IOPS=12, BW=48.8KiB/s (50.0kB/s)(6236KiB/127703msec); 0 zone resets clat (usec): min=774, max=222233, avg=35344.73, stdev=36487.88 lat (usec): min=775, max=222237, avg=35349.70, stdev=36487.17 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1352], 10.00th=[ 1582], 20.00th=[ 3785], | 30.00th=[ 7308], 40.00th=[ 14615], 50.00th=[ 24511], 60.00th=[ 34866], | 70.00th=[ 47449], 80.00th=[ 61604], 90.00th=[ 85459], 95.00th=[110625], | 99.00th=[149947], 99.50th=[181404], 99.90th=[204473], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 7, max= 135, per=24.86%, avg=48.73, stdev=20.96, samples=250 iops : min= 1, max= 33, avg=11.51, stdev= 5.27, samples=250 lat (usec) : 50=0.20%, 100=1.53%, 250=0.10%, 1000=0.10% lat (msec) : 2=6.28%, 4=4.26%, 10=6.74%, 20=10.29%, 50=38.35% lat (msec) : 100=26.17%, 250=5.92%, 500=0.03%, 2000=0.03% cpu : usr=0.05%, sys=4.51%, ctx=6327, 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=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=188KiB/s (192kB/s), 46.9KiB/s-48.4KiB/s (47.0kB/s-49.5kB/s), io=23.4MiB (24.6MB), run=124653-127838msec WRITE: bw=197KiB/s (201kB/s), 48.8KiB/s-50.3KiB/s (50.0kB/s-51.5kB/s), io=24.6MiB (25.7MB), run=124653-127838msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178949: Wed Aug 19 04:00:16 2026 read: IOPS=8, BW=33.8KiB/s (34.6kB/s)(5992KiB/177327msec) clat (msec): min=5, max=1059, avg=48.76, stdev=49.79 lat (msec): min=5, max=1059, avg=48.77, stdev=49.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 68], 90.00th=[ 105], 95.00th=[ 140], | 99.00th=[ 211], 99.50th=[ 243], 99.90th=[ 262], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 117, per=25.44%, avg=34.35, stdev=21.84, samples=339 iops : min= 1, max= 29, avg= 7.92, stdev= 5.50, samples=339 write: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6296KiB/177327msec); 0 zone resets clat (msec): min=11, max=363, avg=65.92, stdev=45.69 lat (msec): min=11, max=363, avg=65.93, stdev=45.69 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 62], | 70.00th=[ 75], 80.00th=[ 95], 90.00th=[ 128], 95.00th=[ 159], | 99.00th=[ 222], 99.50th=[ 271], 99.90th=[ 326], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 111, per=25.37%, avg=35.77, stdev=21.06, samples=342 iops : min= 1, max= 27, avg= 8.28, stdev= 5.29, samples=342 lat (msec) : 10=1.63%, 20=12.27%, 50=43.82%, 100=28.09%, 250=13.70% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.05%, sys=1.85%, ctx=4960, 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=178951: Wed Aug 19 04:00:16 2026 read: IOPS=8, BW=33.9KiB/s (34.7kB/s)(5940KiB/175391msec) clat (msec): min=6, max=1156, avg=48.37, stdev=50.65 lat (msec): min=6, max=1156, avg=48.38, stdev=50.65 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 52], 80.00th=[ 68], 90.00th=[ 107], 95.00th=[ 136], | 99.00th=[ 209], 99.50th=[ 239], 99.90th=[ 259], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 125, per=25.37%, avg=34.25, stdev=21.89, samples=337 iops : min= 1, max= 31, avg= 7.89, stdev= 5.51, samples=337 write: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6348KiB/175391msec); 0 zone resets clat (msec): min=10, max=363, avg=64.92, stdev=43.75 lat (msec): min=10, max=363, avg=64.92, stdev=43.75 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 61], | 70.00th=[ 72], 80.00th=[ 93], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 213], 99.50th=[ 236], 99.90th=[ 338], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 103, per=25.67%, avg=36.20, stdev=20.09, samples=341 iops : min= 1, max= 25, avg= 8.38, stdev= 5.05, samples=341 lat (msec) : 10=1.30%, 20=12.50%, 50=44.27%, 100=27.25%, 250=14.39% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=1.90%, ctx=4991, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178952: Wed Aug 19 04:00:16 2026 read: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6028KiB/176798msec) clat (msec): min=5, max=265, avg=48.02, stdev=41.95 lat (msec): min=5, max=265, avg=48.02, stdev=41.95 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 105], 95.00th=[ 142], | 99.00th=[ 203], 99.50th=[ 236], 99.90th=[ 253], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 7, max= 126, per=25.31%, avg=34.17, stdev=21.44, samples=343 iops : min= 1, max= 31, avg= 7.87, stdev= 5.40, samples=343 write: IOPS=8, BW=35.4KiB/s (36.3kB/s)(6260KiB/176798msec); 0 zone resets clat (msec): min=8, max=1199, avg=66.46, stdev=53.72 lat (msec): min=8, max=1199, avg=66.46, stdev=53.72 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 75], 80.00th=[ 96], 90.00th=[ 129], 95.00th=[ 163], | 99.00th=[ 222], 99.50th=[ 259], 99.90th=[ 321], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 117, per=25.31%, avg=35.69, stdev=21.35, samples=341 iops : min= 1, max= 29, avg= 8.26, stdev= 5.36, samples=341 lat (msec) : 10=1.40%, 20=12.27%, 50=44.92%, 100=26.86%, 250=14.19% lat (msec) : 500=0.33%, 2000=0.03% cpu : usr=0.05%, sys=1.88%, ctx=5116, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178954: Wed Aug 19 04:00:16 2026 read: IOPS=8, BW=34.5KiB/s (35.3kB/s)(6052KiB/175461msec) clat (msec): min=6, max=331, avg=45.28, stdev=37.39 lat (msec): min=6, max=331, avg=45.28, stdev=37.39 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 64], 90.00th=[ 92], 95.00th=[ 127], | 99.00th=[ 180], 99.50th=[ 194], 99.90th=[ 279], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 119, per=26.23%, avg=35.41, stdev=22.42, samples=332 iops : min= 1, max= 29, avg= 8.19, stdev= 5.63, samples=332 write: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6236KiB/175461msec); 0 zone resets clat (msec): min=8, max=1200, avg=68.28, stdev=55.54 lat (msec): min=8, max=1200, avg=68.30, stdev=55.53 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 133], 95.00th=[ 169], | 99.00th=[ 232], 99.50th=[ 264], 99.90th=[ 326], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 118, per=25.41%, avg=35.83, stdev=19.94, samples=338 iops : min= 1, max= 29, avg= 8.28, stdev= 5.02, samples=338 lat (msec) : 10=1.37%, 20=11.95%, 50=45.18%, 100=27.80%, 250=13.22% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.04%, sys=1.94%, ctx=5066, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=135KiB/s (139kB/s), 33.8KiB/s-34.5KiB/s (34.6kB/s-35.3kB/s), io=23.4MiB (24.6MB), run=175391-177327msec WRITE: bw=142KiB/s (145kB/s), 35.4KiB/s-36.2KiB/s (36.3kB/s-37.1kB/s), io=24.6MiB (25.7MB), run=175391-177327msec 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=179012: Wed Aug 19 04:00:58 2026 read: IOPS=12, BW=202KiB/s (207kB/s)(5920KiB/29333msec) clat (usec): min=41, max=141175, avg=42573.24, stdev=26430.04 lat (usec): min=42, max=141177, avg=42574.48, stdev=26430.13 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 70], 10.00th=[ 16188], 20.00th=[ 22414], | 30.00th=[ 27395], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 44827], | 70.00th=[ 51643], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[135267], 99.50th=[137364], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 31, max= 377, per=24.92%, avg=198.39, stdev=70.80, samples=57 iops : min= 1, max= 23, avg=11.61, stdev= 4.50, samples=57 write: IOPS=13, BW=217KiB/s (222kB/s)(6368KiB/29333msec); 0 zone resets clat (usec): min=1669, max=189422, avg=33796.94, stdev=33832.15 lat (usec): min=1671, max=189425, avg=33811.58, stdev=33823.14 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2057], 10.00th=[ 2704], 20.00th=[ 5080], | 30.00th=[ 9110], 40.00th=[ 17171], 50.00th=[ 23200], 60.00th=[ 32637], | 70.00th=[ 42730], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[100140], | 99.00th=[168821], 99.50th=[173016], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 60, max= 415, per=25.78%, avg=215.75, stdev=90.78, samples=57 iops : min= 3, max= 25, avg=12.70, stdev= 5.74, samples=57 lat (usec) : 50=0.39%, 100=2.99%, 250=0.13%, 500=0.13% lat (msec) : 2=2.47%, 4=5.60%, 10=8.85%, 20=10.42%, 50=40.23% lat (msec) : 100=24.35%, 250=4.43% cpu : usr=0.08%, sys=5.93%, ctx=1720, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179013: Wed Aug 19 04:00:58 2026 read: IOPS=12, BW=197KiB/s (202kB/s)(5744KiB/29137msec) clat (usec): min=41, max=168177, avg=43647.45, stdev=28251.36 lat (usec): min=42, max=168179, avg=43654.74, stdev=28256.16 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 15270], 20.00th=[ 21890], | 30.00th=[ 26870], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 51643], 80.00th=[ 63177], 90.00th=[ 82314], 95.00th=[ 95945], | 99.00th=[127402], 99.50th=[160433], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 26, max= 382, per=24.61%, avg=195.91, stdev=77.29, samples=57 iops : min= 1, max= 23, avg=11.44, stdev= 4.86, samples=57 write: IOPS=14, BW=225KiB/s (230kB/s)(6544KiB/29137msec); 0 zone resets clat (usec): min=1561, max=146525, avg=31774.91, stdev=30857.26 lat (usec): min=1562, max=146527, avg=31786.83, stdev=30853.27 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 1975], 10.00th=[ 2933], 20.00th=[ 5866], | 30.00th=[ 9110], 40.00th=[ 15664], 50.00th=[ 23462], 60.00th=[ 31327], | 70.00th=[ 39584], 80.00th=[ 51643], 90.00th=[ 78119], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[141558], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 31, max= 446, per=27.22%, avg=227.80, stdev=88.07, samples=56 iops : min= 1, max= 27, avg=13.46, stdev= 5.54, samples=56 lat (usec) : 50=0.13%, 100=3.52%, 250=0.13% lat (msec) : 2=3.12%, 4=5.21%, 10=8.72%, 20=11.07%, 50=41.80% lat (msec) : 100=21.88%, 250=4.43% cpu : usr=0.05%, sys=5.92%, ctx=1700, 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=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=179014: Wed Aug 19 04:00:58 2026 read: IOPS=12, BW=208KiB/s (213kB/s)(6256KiB/30081msec) clat (usec): min=46, max=200465, avg=42324.84, stdev=27829.04 lat (usec): min=46, max=200466, avg=42329.76, stdev=27827.76 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 63], 10.00th=[ 12780], 20.00th=[ 21890], | 30.00th=[ 26608], 40.00th=[ 32637], 50.00th=[ 39060], 60.00th=[ 45351], | 70.00th=[ 52691], 80.00th=[ 60031], 90.00th=[ 77071], 95.00th=[ 90702], | 99.00th=[137364], 99.50th=[141558], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 54, max= 383, per=26.15%, avg=208.12, stdev=78.09, samples=59 iops : min= 3, max= 23, avg=12.22, stdev= 4.89, samples=59 write: IOPS=12, BW=201KiB/s (205kB/s)(6032KiB/30081msec); 0 zone resets clat (usec): min=1323, max=277533, avg=34765.10, stdev=35620.52 lat (usec): min=1324, max=277535, avg=34767.46, stdev=35620.49 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1991], 10.00th=[ 3195], 20.00th=[ 6325], | 30.00th=[ 10945], 40.00th=[ 17695], 50.00th=[ 25560], 60.00th=[ 31851], | 70.00th=[ 40109], 80.00th=[ 55837], 90.00th=[ 79168], 95.00th=[101188], | 99.00th=[166724], 99.50th=[198181], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 454, per=23.63%, avg=197.81, stdev=92.54, samples=59 iops : min= 1, max= 28, avg=11.58, stdev= 5.84, samples=59 lat (usec) : 50=0.13%, 100=4.04%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.73%, 4=3.26%, 10=7.68%, 20=11.20%, 50=41.67% lat (msec) : 100=24.22%, 250=4.30%, 500=0.13% cpu : usr=0.08%, sys=5.90%, ctx=1802, 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=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=179015: Wed Aug 19 04:00:58 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(6032KiB/28230msec) clat (usec): min=44, max=194091, avg=40510.05, stdev=29991.34 lat (usec): min=45, max=194093, avg=40514.39, stdev=29992.45 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 18220], | 30.00th=[ 26084], 40.00th=[ 31327], 50.00th=[ 37487], 60.00th=[ 44827], | 70.00th=[ 49546], 80.00th=[ 57934], 90.00th=[ 71828], 95.00th=[ 90702], | 99.00th=[154141], 99.50th=[164627], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 63, max= 478, per=27.18%, avg=216.33, stdev=88.35, samples=54 iops : min= 3, max= 29, avg=12.74, stdev= 5.62, samples=54 write: IOPS=13, BW=222KiB/s (227kB/s)(6256KiB/28230msec); 0 zone resets clat (usec): min=1512, max=154874, avg=32189.06, stdev=31030.02 lat (usec): min=1513, max=154876, avg=32201.61, stdev=31030.89 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1975], 10.00th=[ 2737], 20.00th=[ 5080], | 30.00th=[ 8979], 40.00th=[ 16057], 50.00th=[ 23725], 60.00th=[ 31589], | 70.00th=[ 40633], 80.00th=[ 54264], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[133694], 99.50th=[152044], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 54, max= 384, per=26.50%, avg=221.82, stdev=89.51, samples=55 iops : min= 3, max= 24, avg=13.09, stdev= 5.64, samples=55 lat (usec) : 50=0.26%, 100=5.99%, 250=0.26%, 500=0.39%, 1000=0.13% lat (msec) : 2=2.86%, 4=5.08%, 10=8.72%, 20=10.55%, 50=39.71% lat (msec) : 100=22.14%, 250=3.91% cpu : usr=0.09%, sys=5.58%, ctx=1613, 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=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=796KiB/s (815kB/s), 197KiB/s-214KiB/s (202kB/s-219kB/s), io=23.4MiB (24.5MB), run=28230-30081msec WRITE: bw=838KiB/s (858kB/s), 201KiB/s-225KiB/s (205kB/s-230kB/s), io=24.6MiB (25.8MB), run=28230-30081msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179008: Wed Aug 19 04:01:08 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(5920KiB/38668msec) clat (msec): min=6, max=232, avg=38.97, stdev=33.80 lat (msec): min=6, max=232, avg=38.97, stdev=33.80 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 51], 90.00th=[ 84], 95.00th=[ 113], | 99.00th=[ 178], 99.50th=[ 201], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 541, per=25.10%, avg=152.13, stdev=100.74, samples=76 iops : min= 1, max= 33, avg= 8.75, stdev= 6.34, samples=76 write: IOPS=10, BW=165KiB/s (169kB/s)(6368KiB/38668msec); 0 zone resets clat (msec): min=15, max=349, avg=60.31, stdev=43.90 lat (msec): min=15, max=349, avg=60.31, stdev=43.90 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 86], 90.00th=[ 122], 95.00th=[ 138], | 99.00th=[ 243], 99.50th=[ 338], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 29, max= 384, per=25.79%, avg=164.30, stdev=94.98, samples=76 iops : min= 1, max= 24, avg= 9.51, stdev= 6.00, samples=76 lat (msec) : 10=1.17%, 20=14.97%, 50=51.30%, 100=21.88%, 250=10.29% lat (msec) : 500=0.39% cpu : usr=0.07%, sys=2.16%, ctx=1247, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179009: Wed Aug 19 04:01:08 2026 read: IOPS=9, BW=145KiB/s (149kB/s)(5744KiB/39516msec) clat (msec): min=4, max=202, avg=38.82, stdev=32.82 lat (msec): min=4, max=202, avg=38.82, stdev=32.82 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 85], 95.00th=[ 114], | 99.00th=[ 165], 99.50th=[ 167], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 29, max= 416, per=25.04%, avg=151.76, stdev=98.79, samples=74 iops : min= 1, max= 26, avg= 8.70, stdev= 6.24, samples=74 write: IOPS=10, BW=166KiB/s (170kB/s)(6544KiB/39516msec); 0 zone resets clat (msec): min=14, max=349, avg=62.04, stdev=45.71 lat (msec): min=14, max=349, avg=62.04, stdev=45.71 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 72], 80.00th=[ 87], 90.00th=[ 123], 95.00th=[ 153], | 99.00th=[ 220], 99.50th=[ 259], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 411, per=25.89%, avg=164.91, stdev=99.16, samples=78 iops : min= 1, max= 25, avg= 9.55, stdev= 6.24, samples=78 lat (msec) : 10=1.30%, 20=15.23%, 50=48.83%, 100=22.40%, 250=11.85% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=2.12%, ctx=1236, 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=179010: Wed Aug 19 04:01:08 2026 read: IOPS=9, BW=159KiB/s (162kB/s)(6256KiB/39467msec) clat (msec): min=6, max=222, avg=40.21, stdev=34.97 lat (msec): min=6, max=222, avg=40.21, stdev=34.97 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 91], 95.00th=[ 118], | 99.00th=[ 176], 99.50th=[ 199], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 542, per=26.48%, avg=160.49, stdev=113.51, samples=77 iops : min= 1, max= 33, avg= 9.27, stdev= 7.13, samples=77 write: IOPS=9, BW=153KiB/s (157kB/s)(6032KiB/39467msec); 0 zone resets clat (msec): min=13, max=303, avg=62.77, stdev=42.51 lat (msec): min=13, max=303, avg=62.78, stdev=42.51 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 93], 90.00th=[ 120], 95.00th=[ 146], | 99.00th=[ 222], 99.50th=[ 266], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 416, per=23.91%, avg=152.32, stdev=90.24, samples=78 iops : min= 1, max= 26, avg= 8.76, stdev= 5.72, samples=78 lat (msec) : 10=1.82%, 20=16.41%, 50=46.88%, 100=22.14%, 250=12.50% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.99%, ctx=1181, 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=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=179011: Wed Aug 19 04:01:08 2026 read: IOPS=9, BW=154KiB/s (158kB/s)(6032KiB/39145msec) clat (msec): min=7, max=184, avg=41.96, stdev=35.60 lat (msec): min=7, max=184, avg=41.96, stdev=35.60 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 97], 95.00th=[ 129], | 99.00th=[ 169], 99.50th=[ 182], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 31, max= 416, per=25.47%, avg=154.33, stdev=93.49, samples=76 iops : min= 1, max= 26, avg= 8.88, stdev= 5.91, samples=76 write: IOPS=9, BW=160KiB/s (164kB/s)(6256KiB/39145msec); 0 zone resets clat (msec): min=13, max=278, avg=58.96, stdev=41.95 lat (msec): min=13, max=278, avg=58.97, stdev=41.95 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 84], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 236], 99.50th=[ 259], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 541, per=25.08%, avg=159.74, stdev=96.24, samples=77 iops : min= 1, max= 33, avg= 9.22, stdev= 6.07, samples=77 lat (msec) : 10=1.17%, 20=15.23%, 50=47.66%, 100=24.48%, 250=11.20% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.16%, ctx=1189, 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=606KiB/s (621kB/s), 145KiB/s-159KiB/s (149kB/s-162kB/s), io=23.4MiB (24.5MB), run=38668-39516msec WRITE: bw=638KiB/s (653kB/s), 153KiB/s-166KiB/s (157kB/s-170kB/s), io=24.6MiB (25.8MB), run=38668-39516msec 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=179038: Wed Aug 19 04:01:22 2026 read: IOPS=2, BW=2496KiB/s (2556kB/s)(7168KiB/2872msec) clat (msec): min=4, max=355, avg=184.82, stdev=106.53 lat (msec): min=4, max=355, avg=184.82, stdev=106.53 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 140], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 249], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1954, max= 4260, per=75.45%, avg=3420.33, stdev=1274.34, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1783KiB/s (1826kB/s)(5120KiB/2872msec); 0 zone resets clat (msec): min=180, max=468, avg=309.33, stdev=113.44 lat (msec): min=180, max=468, avg=309.43, stdev=113.44 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1954, max= 4071, per=39.72%, avg=2520.75, stdev=1034.12, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 10=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.03%, sys=13.97%, ctx=164, 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=179039: Wed Aug 19 04:01:22 2026 read: IOPS=0, BW=453KiB/s (464kB/s)(2048KiB/4517msec) clat (msec): min=146, max=161, avg=153.81, stdev=10.51 lat (msec): min=146, max=161, avg=153.81, stdev=10.51 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 161], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 161], 95.00th=[ 161], | 99.00th=[ 161], 99.50th=[ 161], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 1992, max= 2003, per=44.07%, avg=1997.50, stdev= 7.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2267KiB/s (2321kB/s)(10.0MiB/4517msec); 0 zone resets clat (msec): min=169, max=749, avg=401.51, stdev=160.71 lat (msec): min=169, max=749, avg=401.59, stdev=160.70 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 239], | 30.00th=[ 275], 40.00th=[ 351], 50.00th=[ 422], 60.00th=[ 435], | 70.00th=[ 439], 80.00th=[ 464], 90.00th=[ 472], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1961, max= 4071, per=42.37%, avg=2689.50, stdev=1070.34, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=33.33%, 500=58.33%, 750=8.33% cpu : usr=0.16%, sys=10.85%, ctx=138, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179042: Wed Aug 19 04:01:22 2026 read: IOPS=1, BW=1860KiB/s (1904kB/s)(6144KiB/3304msec) clat (msec): min=162, max=349, avg=248.78, stdev=77.80 lat (msec): min=162, max=349, avg=248.78, stdev=77.80 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 239], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1980, max= 3908, per=54.85%, avg=2486.50, stdev=947.96, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1860KiB/s (1904kB/s)(6144KiB/3304msec); 0 zone resets clat (msec): min=137, max=588, avg=292.19, stdev=192.12 lat (msec): min=137, max=588, avg=292.27, stdev=192.13 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 203], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2023, max= 3961, per=43.45%, avg=2757.50, stdev=926.31, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=66.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=14.41%, ctx=178, 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=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=179044: Wed Aug 19 04:01:22 2026 read: IOPS=1, BW=1208KiB/s (1237kB/s)(5120KiB/4238msec) clat (msec): min=114, max=340, avg=209.64, stdev=89.72 lat (msec): min=114, max=340, avg=209.65, stdev=89.72 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 115], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 236], 80.00th=[ 236], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 3961, max= 4096, per=88.87%, avg=4028.50, stdev=95.46, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1691KiB/s (1732kB/s)(7168KiB/4238msec); 0 zone resets clat (msec): min=74, max=724, avg=430.31, stdev=235.35 lat (msec): min=74, max=724, avg=430.43, stdev=235.36 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 201], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 531], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 592], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1954, max= 6095, per=44.56%, avg=2828.40, stdev=1826.40, samples=5 iops : min= 1, max= 5, avg= 1.80, stdev= 1.79, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=33.33% cpu : usr=0.00%, sys=11.26%, ctx=182, 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=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=4534KiB/s (4643kB/s), 453KiB/s-2496KiB/s (464kB/s-2556kB/s), io=20.0MiB (20.0MB), run=2872-4517msec WRITE: bw=6348KiB/s (6500kB/s), 1691KiB/s-2267KiB/s (1732kB/s-2321kB/s), io=28.0MiB (29.4MB), run=2872-4517msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179040: Wed Aug 19 04:01:23 2026 read: IOPS=1, BW=1954KiB/s (2001kB/s)(7168KiB/3669msec) clat (msec): min=131, max=413, avg=234.55, stdev=105.97 lat (msec): min=131, max=413, avg=234.55, stdev=105.97 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 142], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 347], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2011, max= 3976, per=66.99%, avg=2785.50, stdev=944.29, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1395KiB/s (1429kB/s)(5120KiB/3669msec); 0 zone resets clat (msec): min=220, max=530, avg=357.41, stdev=118.15 lat (msec): min=220, max=530, avg=357.48, stdev=118.15 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2019, max= 4055, per=46.48%, avg=2705.67, stdev=1168.62, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=4.03%, ctx=83, 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=179041: Wed Aug 19 04:01:23 2026 read: IOPS=0, BW=430KiB/s (440kB/s)(2048KiB/4767msec) clat (msec): min=132, max=427, avg=280.20, stdev=208.74 lat (msec): min=132, max=427, avg=280.20, stdev=208.74 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 133], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 2011, max= 2011, per=48.36%, avg=2011.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2148KiB/s (2200kB/s)(10.0MiB/4767msec); 0 zone resets clat (msec): min=121, max=1085, avg=395.02, stdev=300.25 lat (msec): min=121, max=1086, avg=395.13, stdev=300.26 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 133], | 30.00th=[ 213], 40.00th=[ 234], 50.00th=[ 236], 60.00th=[ 284], | 70.00th=[ 485], 80.00th=[ 489], 90.00th=[ 667], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1928, max= 4087, per=51.82%, avg=3016.67, stdev=1135.14, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.07%, ctx=86, 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=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=179043: Wed Aug 19 04:01:23 2026 read: IOPS=1, BW=1469KiB/s (1504kB/s)(6144KiB/4183msec) clat (msec): min=59, max=581, avg=225.22, stdev=185.09 lat (msec): min=59, max=581, avg=225.22, stdev=185.09 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 207], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1988, max= 3856, per=63.23%, avg=2629.00, stdev=1062.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1469KiB/s (1504kB/s)(6144KiB/4183msec); 0 zone resets clat (msec): min=226, max=702, avg=457.82, stdev=197.29 lat (msec): min=226, max=702, avg=459.21, stdev=197.98 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 542], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1928, max= 2043, per=34.32%, avg=1997.80, stdev=43.69, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=33.33% cpu : usr=0.00%, sys=4.52%, ctx=137, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179045: Wed Aug 19 04:01:23 2026 read: IOPS=1, BW=1040KiB/s (1065kB/s)(5120KiB/4925msec) clat (msec): min=63, max=783, avg=402.85, stdev=349.84 lat (msec): min=63, max=783, avg=402.85, stdev=349.84 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1988, max= 3856, per=63.23%, avg=2629.00, stdev=1062.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1455KiB/s (1490kB/s)(7168KiB/4925msec); 0 zone resets clat (msec): min=152, max=648, avg=409.51, stdev=189.17 lat (msec): min=152, max=648, avg=410.15, stdev=188.81 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 245], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 376], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 592], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1988, max= 4047, per=51.90%, avg=3021.25, stdev=1179.86, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=25.00%, 1000=16.67% cpu : usr=0.00%, sys=3.51%, ctx=95, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4158KiB/s (4258kB/s), 430KiB/s-1954KiB/s (440kB/s-2001kB/s), io=20.0MiB (20.0MB), run=3669-4925msec WRITE: bw=5822KiB/s (5961kB/s), 1395KiB/s-2148KiB/s (1429kB/s-2200kB/s), io=28.0MiB (29.4MB), run=3669-4925msec 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=179053: Wed Aug 19 04:01:37 2026 read: IOPS=1, BW=4493KiB/s (4601kB/s)(12.0MiB/2735msec) clat (msec): min=793, max=954, avg=896.15, stdev=89.42 lat (msec): min=793, max=954, avg=896.15, stdev=89.42 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 953], 80.00th=[ 953], 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= 8094, max= 8159, per=100.00%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=13.06%, ctx=392, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179055: Wed Aug 19 04:01:37 2026 read: IOPS=0, BW=1509KiB/s (1545kB/s)(4096KiB/2714msec) clat (nsec): min=761233k, max=761233k, avg=761233132.00, stdev= 0.00 lat (nsec): min=761236k, max=761236k, avg=761236459.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3018KiB/s (3091kB/s)(8192KiB/2714msec); 0 zone resets clat (msec): min=795, max=948, avg=871.91, stdev=108.13 lat (msec): min=798, max=949, avg=873.75, stdev=106.69 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 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= 8143, max= 8143, per=84.67%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=6.04%, ctx=211, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179056: Wed Aug 19 04:01:37 2026 write: IOPS=0, BW=3607KiB/s (3693kB/s)(12.0MiB/3407msec); 0 zone resets clat (msec): min=192, max=2343, avg=1124.32, stdev=1104.17 lat (msec): min=192, max=2344, avg=1124.88, stdev=1104.47 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 8159, max= 8159, per=84.84%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.79%, ctx=59, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179058: Wed Aug 19 04:01:37 2026 write: IOPS=1, BW=4595KiB/s (4706kB/s)(12.0MiB/2674msec); 0 zone resets clat (msec): min=741, max=963, avg=856.21, stdev=111.11 lat (msec): min=742, max=963, avg=857.31, stdev=110.62 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8031, max= 8143, per=84.09%, avg=8087.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.46%, ctx=60, 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=5990KiB/s (6134kB/s), 1509KiB/s-4493KiB/s (1545kB/s-4601kB/s), io=16.0MiB (16.8MB), run=2714-2735msec WRITE: bw=9618KiB/s (9849kB/s), 3018KiB/s-4595KiB/s (3091kB/s-4706kB/s), io=32.0MiB (33.6MB), run=2674-3407msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179054: Wed Aug 19 04:01:37 2026 read: IOPS=1, BW=4710KiB/s (4823kB/s)(12.0MiB/2609msec) clat (msec): min=620, max=1030, avg=827.77, stdev=205.25 lat (msec): min=620, max=1030, avg=827.77, stdev=205.26 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7876, max= 8015, per=100.00%, avg=7945.50, stdev=98.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.41%, 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=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=179057: Wed Aug 19 04:01:37 2026 read: IOPS=0, BW=1328KiB/s (1360kB/s)(4096KiB/3085msec) clat (nsec): min=1588.3M, max=1588.3M, avg=1588289470.00, stdev= 0.00 lat (nsec): min=1588.3M, max=1588.3M, avg=1588292395.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1586], 5.00th=[ 1586], 10.00th=[ 1586], 20.00th=[ 1586], | 30.00th=[ 1586], 40.00th=[ 1586], 50.00th=[ 1586], 60.00th=[ 1586], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] 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=2655KiB/s (2719kB/s)(8192KiB/3085msec); 0 zone resets clat (msec): min=315, max=811, avg=563.62, stdev=350.48 lat (msec): min=316, max=811, avg=564.02, stdev=350.56 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.50%, ctx=38, 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=179059: Wed Aug 19 04:01:37 2026 write: IOPS=1, BW=4208KiB/s (4309kB/s)(12.0MiB/2920msec); 0 zone resets clat (msec): min=426, max=1100, avg=863.53, stdev=379.03 lat (msec): min=426, max=1100, avg=863.86, stdev=379.07 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7876, max= 8126, per=75.33%, avg=8001.00, stdev=176.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.08%, ctx=41, 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=179060: Wed Aug 19 04:01:37 2026 write: IOPS=1, BW=4538KiB/s (4647kB/s)(12.0MiB/2708msec); 0 zone resets clat (msec): min=509, max=1092, avg=824.31, stdev=294.27 lat (msec): min=510, max=1092, avg=825.03, stdev=293.77 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7922, max= 7984, per=74.88%, avg=7953.00, stdev=43.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.29%, ctx=58, 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=5311KiB/s (5438kB/s), 1328KiB/s-4710KiB/s (1360kB/s-4823kB/s), io=16.0MiB (16.8MB), run=2609-3085msec WRITE: bw=10.4MiB/s (10.9MB/s), 2655KiB/s-4538KiB/s (2719kB/s-4647kB/s), io=32.0MiB (33.6MB), run=2708-3085msec