== sanity test 398b: DIO and buffer IO race ============== 03:41:11 (1787038871) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.57545 s, 11.0 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=178693: Tue Aug 18 03:43:12 2026 read: IOPS=14, BW=57.8KiB/s (59.2kB/s)(5992KiB/103683msec) clat (usec): min=37, max=655846, avg=38014.01, stdev=27594.28 lat (usec): min=38, max=655847, avg=38015.84, stdev=27594.37 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 11338], 10.00th=[ 16057], 20.00th=[ 21103], | 30.00th=[ 24773], 40.00th=[ 28967], 50.00th=[ 33424], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 52167], 90.00th=[ 64226], 95.00th=[ 77071], | 99.00th=[114820], 99.50th=[147850], 99.90th=[235930], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 112, per=25.38%, avg=57.36, stdev=18.31, samples=205 iops : min= 1, max= 28, avg=13.75, stdev= 4.63, samples=205 write: IOPS=15, BW=60.7KiB/s (62.2kB/s)(6296KiB/103683msec); 0 zone resets clat (usec): min=1034, max=182662, avg=29474.16, stdev=28437.49 lat (usec): min=1035, max=182662, avg=29476.49, stdev=28437.24 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1647], 10.00th=[ 2376], 20.00th=[ 4293], | 30.00th=[ 7111], 40.00th=[ 15008], 50.00th=[ 21890], 60.00th=[ 29230], | 70.00th=[ 38011], 80.00th=[ 51643], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[122160], 99.50th=[133694], 99.90th=[162530], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 7, max= 150, per=25.65%, avg=60.54, stdev=22.79, samples=204 iops : min= 1, max= 37, avg=14.54, stdev= 5.72, samples=204 lat (usec) : 50=0.07%, 100=1.11%, 250=0.36%, 500=0.07%, 750=0.07% lat (msec) : 2=4.04%, 4=5.53%, 10=8.59%, 20=12.83%, 50=45.96% lat (msec) : 100=19.30%, 250=2.05%, 750=0.03% cpu : usr=0.10%, sys=7.54%, ctx=7103, 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=178694: Tue Aug 18 03:43:12 2026 read: IOPS=14, BW=56.9KiB/s (58.3kB/s)(5940KiB/104376msec) clat (usec): min=37, max=210598, avg=38560.92, stdev=23930.62 lat (usec): min=38, max=210599, avg=38574.95, stdev=23926.84 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 12780], 10.00th=[ 16581], 20.00th=[ 21103], | 30.00th=[ 24773], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 65799], 95.00th=[ 80217], | 99.00th=[123208], 99.50th=[152044], 99.90th=[206570], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 6, max= 104, per=24.99%, avg=56.47, stdev=18.70, samples=205 iops : min= 1, max= 26, avg=13.53, stdev= 4.69, samples=205 write: IOPS=15, BW=60.8KiB/s (62.3kB/s)(6348KiB/104376msec); 0 zone resets clat (usec): min=1085, max=654508, avg=29440.43, stdev=31873.27 lat (usec): min=1086, max=654509, avg=29442.91, stdev=31873.84 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1713], 10.00th=[ 2442], 20.00th=[ 4424], | 30.00th=[ 7701], 40.00th=[ 15401], 50.00th=[ 22414], 60.00th=[ 29230], | 70.00th=[ 38011], 80.00th=[ 49546], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[115868], 99.50th=[154141], 99.90th=[208667], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 8, max= 136, per=25.50%, avg=60.18, stdev=23.03, samples=205 iops : min= 2, max= 34, avg=14.46, stdev= 5.81, samples=205 lat (usec) : 50=0.13%, 100=0.91%, 250=0.10%, 500=0.03%, 750=0.03% lat (msec) : 2=3.65%, 4=5.66%, 10=8.79%, 20=12.89%, 50=46.22% lat (msec) : 100=19.43%, 250=2.12%, 750=0.03% cpu : usr=0.10%, sys=7.45%, ctx=7271, 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=178695: Tue Aug 18 03:43:12 2026 read: IOPS=14, BW=56.7KiB/s (58.1kB/s)(6028KiB/106244msec) clat (usec): min=27, max=197069, avg=39166.71, stdev=23671.84 lat (usec): min=28, max=197070, avg=39170.39, stdev=23668.84 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11600], 10.00th=[ 15008], 20.00th=[ 20317], | 30.00th=[ 24773], 40.00th=[ 29230], 50.00th=[ 34341], 60.00th=[ 41681], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 69731], 95.00th=[ 82314], | 99.00th=[106431], 99.50th=[141558], 99.90th=[179307], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 15, max= 167, per=25.10%, avg=56.72, stdev=20.43, samples=208 iops : min= 3, max= 41, avg=13.59, stdev= 5.11, samples=208 write: IOPS=14, BW=58.9KiB/s (60.3kB/s)(6260KiB/106244msec); 0 zone resets clat (usec): min=1102, max=854147, avg=29926.23, stdev=35250.75 lat (usec): min=1103, max=854149, avg=29928.66, stdev=35250.58 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1549], 10.00th=[ 2442], 20.00th=[ 4359], | 30.00th=[ 8160], 40.00th=[ 15795], 50.00th=[ 22676], 60.00th=[ 29492], | 70.00th=[ 37487], 80.00th=[ 49021], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[122160], 99.50th=[129500], 99.90th=[283116], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 152, per=24.79%, avg=58.50, stdev=24.46, samples=209 iops : min= 1, max= 38, avg=14.03, stdev= 6.15, samples=209 lat (usec) : 50=0.23%, 100=1.24%, 250=0.20%, 500=0.03%, 750=0.03% lat (msec) : 2=4.00%, 4=5.24%, 10=7.49%, 20=14.16%, 50=44.66% lat (msec) : 100=20.28%, 250=2.38%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=7.31%, ctx=7337, 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=178696: Tue Aug 18 03:43:12 2026 read: IOPS=14, BW=57.4KiB/s (58.7kB/s)(6052KiB/105526msec) clat (usec): min=48, max=220103, avg=37439.38, stdev=23736.59 lat (usec): min=49, max=220105, avg=37441.44, stdev=23736.41 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9765], 10.00th=[ 15139], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 28443], 50.00th=[ 33162], 60.00th=[ 38536], | 70.00th=[ 45351], 80.00th=[ 53740], 90.00th=[ 65274], 95.00th=[ 77071], | 99.00th=[110625], 99.50th=[139461], 99.90th=[217056], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 118, per=25.26%, avg=57.10, stdev=20.32, samples=208 iops : min= 1, max= 29, avg=13.69, stdev= 5.10, samples=208 write: IOPS=14, BW=59.1KiB/s (60.5kB/s)(6236KiB/105526msec); 0 zone resets clat (usec): min=1134, max=803508, avg=31122.29, stdev=36173.42 lat (usec): min=1135, max=803510, avg=31126.30, stdev=36172.88 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1778], 10.00th=[ 2376], 20.00th=[ 4293], | 30.00th=[ 7177], 40.00th=[ 15533], 50.00th=[ 22938], 60.00th=[ 30540], | 70.00th=[ 40109], 80.00th=[ 52167], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[139461], 99.50th=[156238], 99.90th=[246416], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 151, per=24.79%, avg=58.50, stdev=22.92, samples=209 iops : min= 1, max= 37, avg=14.04, stdev= 5.77, samples=209 lat (usec) : 50=0.10%, 100=1.63%, 250=0.33%, 500=0.03%, 1000=0.03% lat (msec) : 2=3.35%, 4=6.48%, 10=7.62%, 20=14.49%, 50=43.26% lat (msec) : 100=20.05%, 250=2.60%, 1000=0.03% cpu : usr=0.10%, sys=7.44%, ctx=7284, 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=226KiB/s (231kB/s), 56.7KiB/s-57.8KiB/s (58.1kB/s-59.2kB/s), io=23.4MiB (24.6MB), run=103683-106244msec WRITE: bw=237KiB/s (242kB/s), 58.9KiB/s-60.8KiB/s (60.3kB/s-62.3kB/s), io=24.6MiB (25.7MB), run=103683-106244msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178689: Tue Aug 18 03:43:46 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(5992KiB/140271msec) clat (msec): min=5, max=670, avg=36.53, stdev=34.35 lat (msec): min=5, max=670, avg=36.53, stdev=34.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 103], | 99.00th=[ 155], 99.50th=[ 182], 99.90th=[ 234], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 160, per=25.03%, avg=42.56, stdev=27.94, samples=275 iops : min= 1, max= 40, avg= 9.99, stdev= 7.07, samples=275 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(6296KiB/140271msec); 0 zone resets clat (msec): min=10, max=276, avg=54.14, stdev=35.93 lat (msec): min=10, max=276, avg=54.14, stdev=35.94 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 79], 90.00th=[ 102], 95.00th=[ 123], | 99.00th=[ 184], 99.50th=[ 220], 99.90th=[ 251], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 135, per=24.90%, avg=44.57, stdev=24.78, samples=276 iops : min= 1, max= 33, avg=10.49, stdev= 6.27, samples=276 lat (msec) : 10=2.67%, 20=17.58%, 50=48.89%, 100=22.85%, 250=7.94% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.06%, sys=3.07%, ctx=5315, 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=178690: Tue Aug 18 03:43:46 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(5940KiB/140122msec) clat (msec): min=5, max=810, avg=36.71, stdev=38.02 lat (msec): min=5, max=810, avg=36.71, stdev=38.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 80], 95.00th=[ 106], | 99.00th=[ 161], 99.50th=[ 180], 99.90th=[ 305], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 144, per=25.03%, avg=42.55, stdev=27.18, samples=273 iops : min= 1, max= 36, avg= 9.98, stdev= 6.87, samples=273 write: IOPS=11, BW=45.3KiB/s (46.4kB/s)(6348KiB/140122msec); 0 zone resets clat (msec): min=9, max=266, avg=53.71, stdev=34.31 lat (msec): min=9, max=266, avg=53.71, stdev=34.31 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 63], 80.00th=[ 77], 90.00th=[ 101], 95.00th=[ 124], | 99.00th=[ 174], 99.50th=[ 203], 99.90th=[ 262], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 7, max= 135, per=25.15%, avg=45.02, stdev=25.14, samples=276 iops : min= 1, max= 33, avg=10.60, stdev= 6.36, samples=276 lat (msec) : 10=2.77%, 20=17.90%, 50=47.98%, 100=23.67%, 250=7.52% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.97%, ctx=5222, 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=178691: Tue Aug 18 03:43:46 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(6028KiB/139869msec) clat (msec): min=6, max=283, avg=36.28, stdev=29.69 lat (msec): min=6, max=283, avg=36.29, stdev=29.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 74], 95.00th=[ 97], | 99.00th=[ 148], 99.50th=[ 174], 99.90th=[ 209], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 144, per=25.27%, avg=42.95, stdev=26.16, samples=274 iops : min= 1, max= 36, avg=10.08, stdev= 6.62, samples=274 write: IOPS=11, BW=44.8KiB/s (45.8kB/s)(6260KiB/139869msec); 0 zone resets clat (msec): min=12, max=840, avg=54.22, stdev=40.20 lat (msec): min=12, max=840, avg=54.23, stdev=40.20 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 78], 90.00th=[ 97], 95.00th=[ 121], | 99.00th=[ 182], 99.50th=[ 236], 99.90th=[ 275], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 143, per=24.83%, avg=44.45, stdev=25.56, samples=275 iops : min= 1, max= 35, avg=10.45, stdev= 6.46, samples=275 lat (msec) : 10=2.51%, 20=17.51%, 50=48.37%, 100=24.67%, 250=6.74% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.07%, sys=3.13%, ctx=5296, 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=178692: Tue Aug 18 03:43:46 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(6052KiB/140436msec) clat (msec): min=5, max=290, avg=35.60, stdev=30.97 lat (msec): min=5, max=290, avg=35.60, stdev=30.97 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 51], 90.00th=[ 79], 95.00th=[ 102], | 99.00th=[ 142], 99.50th=[ 184], 99.90th=[ 241], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 160, per=25.46%, avg=43.28, stdev=27.80, samples=273 iops : min= 1, max= 40, avg=10.16, stdev= 7.03, samples=273 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(6236KiB/140436msec); 0 zone resets clat (msec): min=9, max=819, avg=55.32, stdev=40.53 lat (msec): min=9, max=819, avg=55.32, stdev=40.53 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 80], 90.00th=[ 105], 95.00th=[ 129], | 99.00th=[ 174], 99.50th=[ 213], 99.90th=[ 266], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 119, per=24.59%, avg=44.01, stdev=25.51, samples=276 iops : min= 1, max= 29, avg=10.35, stdev= 6.45, samples=276 lat (msec) : 10=2.83%, 20=18.33%, 50=47.98%, 100=22.56%, 250=8.17% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=3.00%, ctx=5251, 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=171KiB/s (175kB/s), 42.4KiB/s-43.1KiB/s (43.4kB/s-44.1kB/s), io=23.4MiB (24.6MB), run=139869-140436msec WRITE: bw=179KiB/s (183kB/s), 44.4KiB/s-45.3KiB/s (45.5kB/s-46.4kB/s), io=24.6MiB (25.7MB), run=139869-140436msec 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=178732: Tue Aug 18 03:44:20 2026 read: IOPS=14, BW=229KiB/s (234kB/s)(5920KiB/25889msec) clat (usec): min=44, max=106801, avg=34937.43, stdev=21039.46 lat (usec): min=45, max=106802, avg=34938.82, stdev=21039.39 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 74], 10.00th=[ 529], 20.00th=[ 20579], | 30.00th=[ 24249], 40.00th=[ 28181], 50.00th=[ 31851], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 51643], 90.00th=[ 62129], 95.00th=[ 73925], | 99.00th=[ 95945], 99.50th=[104334], 99.90th=[106431], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 63, max= 512, per=24.62%, avg=227.75, stdev=84.75, samples=51 iops : min= 3, max= 32, avg=13.49, stdev= 5.41, samples=51 write: IOPS=15, BW=246KiB/s (252kB/s)(6368KiB/25889msec); 0 zone resets clat (usec): min=1814, max=192763, avg=32247.96, stdev=31006.05 lat (usec): min=1814, max=192766, avg=32250.20, stdev=31006.07 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 3261], 10.00th=[ 3949], 20.00th=[ 6259], | 30.00th=[ 9634], 40.00th=[ 16581], 50.00th=[ 22938], 60.00th=[ 30540], | 70.00th=[ 41157], 80.00th=[ 53740], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[145753], 99.50th=[189793], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 62, max= 465, per=25.12%, avg=244.37, stdev=83.11, samples=51 iops : min= 3, max= 29, avg=14.55, stdev= 5.27, samples=51 lat (usec) : 50=0.13%, 100=3.52%, 250=0.65%, 500=0.39%, 750=0.13% lat (msec) : 2=0.91%, 4=4.43%, 10=10.55%, 20=11.33%, 50=46.48% lat (msec) : 100=19.66%, 250=1.82% cpu : usr=0.06%, sys=8.90%, ctx=1895, 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=178733: Tue Aug 18 03:44:20 2026 read: IOPS=13, BW=223KiB/s (229kB/s)(5744KiB/25725msec) clat (usec): min=43, max=155363, avg=38269.12, stdev=23311.38 lat (usec): min=43, max=155364, avg=38274.30, stdev=23314.73 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 80], 10.00th=[ 12649], 20.00th=[ 20579], | 30.00th=[ 27395], 40.00th=[ 31327], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 47449], 80.00th=[ 54789], 90.00th=[ 65274], 95.00th=[ 78119], | 99.00th=[103285], 99.50th=[143655], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 95, max= 384, per=24.53%, avg=226.94, stdev=75.64, samples=49 iops : min= 5, max= 24, avg=13.45, stdev= 4.80, samples=49 write: IOPS=15, BW=254KiB/s (260kB/s)(6544KiB/25725msec); 0 zone resets clat (usec): min=1662, max=169807, avg=29125.50, stdev=26287.14 lat (usec): min=1664, max=169809, avg=29128.22, stdev=26288.71 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2835], 10.00th=[ 4015], 20.00th=[ 6980], | 30.00th=[ 10421], 40.00th=[ 15795], 50.00th=[ 23462], 60.00th=[ 30278], | 70.00th=[ 34866], 80.00th=[ 44827], 90.00th=[ 64750], 95.00th=[ 84411], | 99.00th=[107480], 99.50th=[145753], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 94, max= 493, per=25.80%, avg=251.08, stdev=87.26, samples=50 iops : min= 5, max= 30, avg=14.94, stdev= 5.51, samples=50 lat (usec) : 50=0.39%, 100=2.86%, 250=0.78%, 500=0.13% lat (msec) : 2=0.91%, 4=4.30%, 10=10.42%, 20=13.93%, 50=44.40% lat (msec) : 100=20.05%, 250=1.82% cpu : usr=0.07%, sys=8.87%, ctx=1891, 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=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=178734: Tue Aug 18 03:44:20 2026 read: IOPS=15, BW=244KiB/s (250kB/s)(6256KiB/25595msec) clat (usec): min=41, max=142024, avg=35774.81, stdev=22646.40 lat (usec): min=41, max=142027, avg=35784.45, stdev=22656.54 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 75], 10.00th=[ 145], 20.00th=[ 19792], | 30.00th=[ 25035], 40.00th=[ 28967], 50.00th=[ 33162], 60.00th=[ 38536], | 70.00th=[ 43779], 80.00th=[ 50070], 90.00th=[ 66323], 95.00th=[ 77071], | 99.00th=[105382], 99.50th=[126354], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 95, max= 413, per=26.26%, avg=242.90, stdev=77.17, samples=50 iops : min= 5, max= 25, avg=14.44, stdev= 4.90, samples=50 write: IOPS=14, BW=236KiB/s (241kB/s)(6032KiB/25595msec); 0 zone resets clat (usec): min=1734, max=148723, avg=30379.39, stdev=28432.89 lat (usec): min=1737, max=148726, avg=30385.50, stdev=28433.85 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2212], 10.00th=[ 3392], 20.00th=[ 6063], | 30.00th=[ 9765], 40.00th=[ 15139], 50.00th=[ 20841], 60.00th=[ 30802], | 70.00th=[ 38536], 80.00th=[ 53216], 90.00th=[ 72877], 95.00th=[ 84411], | 99.00th=[127402], 99.50th=[145753], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 95, max= 493, per=23.77%, avg=231.28, stdev=87.34, samples=50 iops : min= 5, max= 30, avg=13.70, stdev= 5.49, samples=50 lat (usec) : 50=0.65%, 100=3.26%, 250=1.56%, 500=0.39% lat (msec) : 2=1.43%, 4=4.95%, 10=8.85%, 20=13.15%, 50=44.66% lat (msec) : 100=19.01%, 250=2.08% cpu : usr=0.08%, sys=8.71%, ctx=1852, 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=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=178735: Tue Aug 18 03:44:20 2026 read: IOPS=15, BW=244KiB/s (249kB/s)(6032KiB/24762msec) clat (usec): min=41, max=157027, avg=35546.82, stdev=24662.37 lat (usec): min=41, max=157029, avg=35549.20, stdev=24661.69 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 73], 10.00th=[ 119], 20.00th=[ 17957], | 30.00th=[ 23462], 40.00th=[ 28181], 50.00th=[ 31851], 60.00th=[ 38536], | 70.00th=[ 44303], 80.00th=[ 52691], 90.00th=[ 65799], 95.00th=[ 76022], | 99.00th=[125305], 99.50th=[152044], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 63, max= 413, per=26.23%, avg=242.60, stdev=73.56, samples=48 iops : min= 3, max= 25, avg=14.40, stdev= 4.68, samples=48 write: IOPS=15, BW=253KiB/s (259kB/s)(6256KiB/24762msec); 0 zone resets clat (usec): min=1619, max=158308, avg=28721.07, stdev=28144.10 lat (usec): min=1622, max=158310, avg=28723.58, stdev=28144.27 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2966], 10.00th=[ 3851], 20.00th=[ 5866], | 30.00th=[ 8455], 40.00th=[ 13435], 50.00th=[ 21365], 60.00th=[ 26608], | 70.00th=[ 33817], 80.00th=[ 49546], 90.00th=[ 67634], 95.00th=[ 85459], | 99.00th=[129500], 99.50th=[156238], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 95, max= 551, per=25.77%, avg=250.75, stdev=105.42, samples=48 iops : min= 5, max= 34, avg=14.92, stdev= 6.66, samples=48 lat (usec) : 50=0.13%, 100=3.78%, 250=2.21%, 500=0.26%, 750=0.26% lat (msec) : 2=0.91%, 4=4.69%, 10=12.24%, 20=11.59%, 50=42.06% lat (msec) : 100=19.79%, 250=2.08% cpu : usr=0.11%, sys=8.86%, ctx=1782, 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=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=925KiB/s (947kB/s), 223KiB/s-244KiB/s (229kB/s-250kB/s), io=23.4MiB (24.5MB), run=24762-25889msec WRITE: bw=973KiB/s (997kB/s), 236KiB/s-254KiB/s (241kB/s-260kB/s), io=24.6MiB (25.8MB), run=24762-25889msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178737: Tue Aug 18 03:44:29 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(5920KiB/34785msec) clat (msec): min=7, max=179, avg=37.54, stdev=29.82 lat (msec): min=7, max=179, avg=37.54, stdev=29.82 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 56], 90.00th=[ 82], 95.00th=[ 101], | 99.00th=[ 148], 99.50th=[ 163], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 31, max= 447, per=24.31%, avg=167.22, stdev=96.88, samples=68 iops : min= 1, max= 27, avg= 9.65, stdev= 6.08, samples=68 write: IOPS=11, BW=183KiB/s (187kB/s)(6368KiB/34785msec); 0 zone resets clat (msec): min=14, max=253, avg=52.35, stdev=33.26 lat (msec): min=14, max=253, avg=52.36, stdev=33.26 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 42], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 74], 90.00th=[ 94], 95.00th=[ 121], | 99.00th=[ 180], 99.50th=[ 243], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 412, per=25.12%, avg=181.84, stdev=99.90, samples=68 iops : min= 1, max= 25, avg=10.57, stdev= 6.25, samples=68 lat (msec) : 10=0.91%, 20=17.45%, 50=50.26%, 100=24.22%, 250=7.03% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=3.17%, ctx=1310, 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=178738: Tue Aug 18 03:44:29 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(5744KiB/34762msec) clat (msec): min=7, max=193, avg=36.41, stdev=32.74 lat (msec): min=7, max=193, avg=36.41, stdev=32.74 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 51], 90.00th=[ 78], 95.00th=[ 110], | 99.00th=[ 169], 99.50th=[ 184], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 31, max= 571, per=24.19%, avg=166.45, stdev=110.47, samples=67 iops : min= 1, max= 35, avg= 9.60, stdev= 6.94, samples=67 write: IOPS=11, BW=188KiB/s (193kB/s)(6544KiB/34762msec); 0 zone resets clat (msec): min=12, max=207, avg=52.91, stdev=33.39 lat (msec): min=12, max=207, avg=52.92, stdev=33.39 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 101], 95.00th=[ 122], | 99.00th=[ 171], 99.50th=[ 184], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 31, max= 479, per=25.59%, avg=185.29, stdev=103.85, samples=68 iops : min= 1, max= 29, avg=10.79, stdev= 6.51, samples=68 lat (msec) : 10=2.60%, 20=17.19%, 50=51.30%, 100=21.09%, 250=7.81% cpu : usr=0.07%, sys=3.20%, ctx=1332, 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=178739: Tue Aug 18 03:44:29 2026 read: IOPS=11, BW=180KiB/s (185kB/s)(6256KiB/34681msec) clat (msec): min=6, max=261, avg=37.47, stdev=34.29 lat (msec): min=6, max=261, avg=37.47, stdev=34.29 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 57], 90.00th=[ 80], 95.00th=[ 103], | 99.00th=[ 188], 99.50th=[ 259], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 541, per=26.38%, avg=181.50, stdev=118.87, samples=68 iops : min= 1, max= 33, avg=10.54, stdev= 7.45, samples=68 write: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34681msec); 0 zone resets clat (msec): min=11, max=191, avg=53.00, stdev=33.18 lat (msec): min=11, max=191, avg=53.00, stdev=33.18 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 50], | 70.00th=[ 58], 80.00th=[ 80], 90.00th=[ 104], 95.00th=[ 125], | 99.00th=[ 155], 99.50th=[ 182], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 31, max= 412, per=23.76%, avg=172.04, stdev=94.19, samples=68 iops : min= 1, max= 25, avg= 9.96, stdev= 5.90, samples=68 lat (msec) : 10=1.69%, 20=18.75%, 50=48.70%, 100=22.66%, 250=7.94% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=3.26%, ctx=1355, 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=178740: Tue Aug 18 03:44:29 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34639msec) clat (msec): min=6, max=269, avg=36.98, stdev=34.35 lat (msec): min=6, max=269, avg=36.98, stdev=34.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 112], | 99.00th=[ 167], 99.50th=[ 243], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 476, per=26.15%, avg=179.92, stdev=103.99, samples=65 iops : min= 1, max= 29, avg=10.45, stdev= 6.53, samples=65 write: IOPS=11, BW=181KiB/s (185kB/s)(6256KiB/34639msec); 0 zone resets clat (msec): min=14, max=249, avg=52.88, stdev=33.69 lat (msec): min=14, max=249, avg=52.88, stdev=33.69 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 61], 80.00th=[ 77], 90.00th=[ 99], 95.00th=[ 118], | 99.00th=[ 169], 99.50th=[ 190], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 505, per=24.84%, avg=179.87, stdev=104.93, samples=68 iops : min= 1, max= 31, avg=10.44, stdev= 6.58, samples=68 lat (msec) : 10=1.56%, 20=18.62%, 50=49.48%, 100=22.27%, 250=7.94% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=3.25%, ctx=1270, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=689KiB/s (705kB/s), 165KiB/s-180KiB/s (169kB/s-185kB/s), io=23.4MiB (24.5MB), run=34639-34785msec WRITE: bw=724KiB/s (742kB/s), 174KiB/s-188KiB/s (178kB/s-193kB/s), io=24.6MiB (25.8MB), run=34639-34785msec 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=178751: Tue Aug 18 03:44:41 2026 read: IOPS=2, BW=2421KiB/s (2479kB/s)(7168KiB/2961msec) clat (msec): min=66, max=318, avg=171.59, stdev=100.86 lat (msec): min=66, max=318, avg=171.59, stdev=100.86 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 68], | 30.00th=[ 118], 40.00th=[ 118], 50.00th=[ 133], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 275], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1825, max= 5818, per=60.46%, avg=2906.25, stdev=1943.21, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1729KiB/s (1771kB/s)(5120KiB/2961msec); 0 zone resets clat (msec): min=132, max=566, avg=344.97, stdev=183.33 lat (msec): min=132, max=566, avg=345.06, stdev=183.30 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1939, max= 3650, per=37.74%, avg=2540.00, stdev=962.39, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=8.85%, ctx=116, 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=178752: Tue Aug 18 03:44:41 2026 read: IOPS=0, BW=512KiB/s (524kB/s)(2048KiB/4002msec) clat (msec): min=115, max=128, avg=121.79, stdev= 8.88 lat (msec): min=115, max=128, avg=121.80, stdev= 8.89 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 116], 60.00th=[ 129], | 70.00th=[ 129], 80.00th=[ 129], 90.00th=[ 129], 95.00th=[ 129], | 99.00th=[ 129], 99.50th=[ 129], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 1825, max= 1988, per=39.66%, avg=1906.50, stdev=115.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2559KiB/s (2620kB/s)(10.0MiB/4002msec); 0 zone resets clat (msec): min=107, max=904, avg=369.10, stdev=237.73 lat (msec): min=107, max=904, avg=369.18, stdev=237.72 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 197], | 30.00th=[ 203], 40.00th=[ 234], 50.00th=[ 259], 60.00th=[ 300], | 70.00th=[ 409], 80.00th=[ 535], 90.00th=[ 550], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1939, max= 4087, per=39.93%, avg=2687.17, stdev=1069.43, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=10.00%, ctx=140, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178753: Tue Aug 18 03:44:41 2026 read: IOPS=1, BW=1684KiB/s (1724kB/s)(6144KiB/3649msec) clat (msec): min=95, max=462, avg=234.20, stdev=162.81 lat (msec): min=95, max=462, avg=234.21, stdev=162.81 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 161], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2031, max= 4087, per=67.73%, avg=3256.00, stdev=1083.15, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1684KiB/s (1724kB/s)(6144KiB/3649msec); 0 zone resets clat (msec): min=105, max=542, avg=353.51, stdev=195.90 lat (msec): min=105, max=542, avg=353.60, stdev=195.88 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 129], | 30.00th=[ 129], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 472], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1939, max= 2043, per=29.77%, avg=2003.50, stdev=44.86, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=8.47%, ctx=111, 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=178754: Tue Aug 18 03:44:41 2026 read: IOPS=1, BW=1202KiB/s (1231kB/s)(5120KiB/4260msec) clat (msec): min=95, max=836, avg=289.32, stdev=310.37 lat (msec): min=95, max=836, avg=289.32, stdev=310.37 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 171], 60.00th=[ 171], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 4063, max= 4063, per=84.52%, avg=4063.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1683KiB/s (1723kB/s)(7168KiB/4260msec); 0 zone resets clat (msec): min=121, max=841, avg=392.02, stdev=296.63 lat (msec): min=121, max=841, avg=392.10, stdev=296.63 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 159], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 776], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1939, max= 4087, per=45.10%, avg=3035.00, stdev=1206.27, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 1000=25.00% cpu : usr=0.00%, sys=8.08%, ctx=111, 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=4808KiB/s (4923kB/s), 512KiB/s-2421KiB/s (524kB/s-2479kB/s), io=20.0MiB (20.0MB), run=2961-4260msec WRITE: bw=6731KiB/s (6892kB/s), 1683KiB/s-2559KiB/s (1723kB/s-2620kB/s), io=28.0MiB (29.4MB), run=2961-4260msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178756: Tue Aug 18 03:44:41 2026 read: IOPS=2, BW=2439KiB/s (2497kB/s)(7168KiB/2939msec) clat (msec): min=3, max=458, avg=184.95, stdev=142.43 lat (msec): min=3, max=458, avg=184.95, stdev=142.43 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 85], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 180], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 222], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2023, max= 4087, per=54.48%, avg=2737.75, stdev=967.84, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1742KiB/s (1784kB/s)(5120KiB/2939msec); 0 zone resets clat (msec): min=211, max=452, avg=282.91, stdev=98.52 lat (msec): min=211, max=452, avg=282.97, stdev=98.50 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 247], 60.00th=[ 247], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1954, max= 4047, per=38.13%, avg=2683.00, stdev=1182.19, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 4=8.33%, 100=8.33%, 250=58.33%, 500=25.00% cpu : usr=0.00%, sys=25.09%, ctx=380, 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=178757: Tue Aug 18 03:44:41 2026 read: IOPS=0, BW=503KiB/s (515kB/s)(2048KiB/4075msec) clat (usec): min=782, max=393702, avg=197242.53, stdev=277836.14 lat (usec): min=783, max=393704, avg=197244.16, stdev=277836.87 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 783], 10.00th=[ 783], 20.00th=[ 783], | 30.00th=[ 783], 40.00th=[ 783], 50.00th=[ 783], 60.00th=[392168], | 70.00th=[392168], 80.00th=[392168], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 1946, max= 2043, per=39.69%, avg=1994.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2513KiB/s (2573kB/s)(10.0MiB/4075msec); 0 zone resets clat (msec): min=159, max=794, avg=351.30, stdev=199.52 lat (msec): min=159, max=794, avg=351.70, stdev=199.60 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 169], | 30.00th=[ 199], 40.00th=[ 209], 50.00th=[ 288], 60.00th=[ 313], | 70.00th=[ 405], 80.00th=[ 468], 90.00th=[ 510], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1946, max= 6131, per=51.61%, avg=3631.40, stdev=1729.82, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.79, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=21.62%, ctx=203, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178758: Tue Aug 18 03:44:41 2026 read: IOPS=1, BW=1677KiB/s (1718kB/s)(6144KiB/3663msec) clat (usec): min=523, max=403052, avg=171417.68, stdev=153728.73 lat (usec): min=524, max=403053, avg=171418.87, stdev=153728.75 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[187696], 50.00th=[187696], 60.00th=[191890], | 70.00th=[244319], 80.00th=[244319], 90.00th=[404751], 95.00th=[404751], | 99.00th=[404751], 99.50th=[404751], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 1976, max= 4063, per=65.88%, avg=3310.67, stdev=1158.98, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1677KiB/s (1718kB/s)(6144KiB/3663msec); 0 zone resets clat (msec): min=127, max=648, avg=426.27, stdev=221.36 lat (msec): min=127, max=648, avg=426.32, stdev=221.35 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 502], | 70.00th=[ 634], 80.00th=[ 634], 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= 1946, max= 3953, per=34.16%, avg=2403.20, stdev=867.31, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 250=41.67%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=19.85%, ctx=233, 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=178759: Tue Aug 18 03:44:41 2026 read: IOPS=1, BW=1885KiB/s (1930kB/s)(5120KiB/2716msec) clat (usec): min=475, max=275309, avg=63791.31, stdev=119468.39 lat (usec): min=476, max=275310, avg=63792.19, stdev=119468.53 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[ 1074], 40.00th=[ 1074], 50.00th=[ 1614], 60.00th=[ 1614], | 70.00th=[ 40633], 80.00th=[ 40633], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2639KiB/s (2703kB/s)(7168KiB/2716msec); 0 zone resets clat (msec): min=116, max=518, avg=318.46, stdev=153.91 lat (msec): min=116, max=518, avg=318.53, stdev=153.91 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 123], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 347], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 451], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1410, max= 2048, per=26.49%, avg=1863.75, stdev=305.57, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 500=8.33% lat (msec) : 2=16.67%, 50=8.33%, 250=16.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=27.18%, ctx=253, 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=5026KiB/s (5146kB/s), 503KiB/s-2439KiB/s (515kB/s-2497kB/s), io=20.0MiB (20.0MB), run=2716-4075msec WRITE: bw=7036KiB/s (7205kB/s), 1677KiB/s-2639KiB/s (1718kB/s-2703kB/s), io=28.0MiB (29.4MB), run=2716-4075msec 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=178768: Tue Aug 18 03:44:53 2026 read: IOPS=1, BW=4381KiB/s (4486kB/s)(12.0MiB/2805msec) clat (msec): min=357, max=1435, avg=844.34, stdev=546.39 lat (msec): min=357, max=1435, avg=844.34, stdev=546.39 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.03%, ctx=61, 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=178769: Tue Aug 18 03:44:53 2026 read: IOPS=0, BW=1483KiB/s (1519kB/s)(4096KiB/2762msec) clat (nsec): min=847464k, max=847464k, avg=847463551.00, stdev= 0.00 lat (nsec): min=847466k, max=847466k, avg=847466001.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] 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 write: IOPS=0, BW=2966KiB/s (3037kB/s)(8192KiB/2762msec); 0 zone resets clat (msec): min=571, max=1089, avg=830.39, stdev=366.10 lat (msec): min=576, max=1090, avg=833.38, stdev=363.53 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8175, max= 8175, per=84.03%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=6.99%, ctx=86, 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=178772: Tue Aug 18 03:44:53 2026 write: IOPS=0, BW=3648KiB/s (3736kB/s)(12.0MiB/3368msec); 0 zone resets clat (msec): min=427, max=1872, avg=1006.66, stdev=763.80 lat (msec): min=431, max=1882, avg=1011.83, stdev=768.07 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 8159, max= 8175, per=83.94%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.03%, sys=4.84%, ctx=72, 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=178773: Tue Aug 18 03:44:53 2026 write: IOPS=1, BW=4420KiB/s (4526kB/s)(12.0MiB/2780msec); 0 zone resets clat (msec): min=249, max=1784, avg=828.28, stdev=834.30 lat (msec): min=249, max=1785, avg=829.19, stdev=834.38 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min=16318, max=16318, per=100.00%, avg=16318.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.25%, ctx=80, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5841KiB/s (5981kB/s), 1483KiB/s-4381KiB/s (1519kB/s-4486kB/s), io=16.0MiB (16.8MB), run=2762-2805msec WRITE: bw=9729KiB/s (9963kB/s), 2966KiB/s-4420KiB/s (3037kB/s-4526kB/s), io=32.0MiB (33.6MB), run=2762-3368msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178766: Tue Aug 18 03:44:54 2026 read: IOPS=1, BW=5227KiB/s (5352kB/s)(12.0MiB/2351msec) clat (msec): min=684, max=739, avg=702.72, stdev=31.63 lat (msec): min=684, max=739, avg=702.72, stdev=31.63 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 8078, max= 8126, per=100.00%, avg=8102.00, stdev=33.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=17.28%, ctx=494, 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=178767: Tue Aug 18 03:44:54 2026 read: IOPS=0, BW=1850KiB/s (1894kB/s)(4096KiB/2214msec) clat (nsec): min=617468k, max=617468k, avg=617467895.00, stdev= 0.00 lat (nsec): min=617470k, max=617470k, avg=617470029.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3700KiB/s (3789kB/s)(8192KiB/2214msec); 0 zone resets clat (msec): min=519, max=750, avg=634.91, stdev=162.82 lat (msec): min=520, max=750, avg=635.95, stdev=162.60 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8159, max= 8159, per=90.77%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.41%, ctx=131, 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=178770: Tue Aug 18 03:44:54 2026 write: IOPS=0, BW=3371KiB/s (3452kB/s)(12.0MiB/3645msec); 0 zone resets clat (msec): min=110, max=3047, avg=1117.82, stdev=1671.77 lat (msec): min=111, max=3047, avg=1118.15, stdev=1671.82 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 111], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 3037], 80.00th=[ 3037], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min=16221, max=16221, per=100.00%, avg=16221.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.08%, ctx=67, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178771: Tue Aug 18 03:44:54 2026 write: IOPS=1, BW=4849KiB/s (4966kB/s)(12.0MiB/2534msec); 0 zone resets clat (msec): min=249, max=1752, avg=758.25, stdev=861.00 lat (msec): min=250, max=1752, avg=759.03, stdev=860.82 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7288, max= 8078, per=85.47%, avg=7683.00, stdev=558.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.50%, ctx=134, 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=6969KiB/s (7136kB/s), 1850KiB/s-5227KiB/s (1894kB/s-5352kB/s), io=16.0MiB (16.8MB), run=2214-2351msec WRITE: bw=8990KiB/s (9206kB/s), 3371KiB/s-4849KiB/s (3452kB/s-4966kB/s), io=32.0MiB (33.6MB), run=2214-3645msec