== sanity test 398b: DIO and buffer IO race ============== 18:37:37 (1789079857) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.70392 s, 8.8 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=179345: Thu Sep 10 18:39:41 2026 read: IOPS=14, BW=56.3KiB/s (57.7kB/s)(5992KiB/106356msec) clat (usec): min=40, max=724348, avg=38942.34, stdev=30475.74 lat (usec): min=40, max=724349, avg=38943.35, stdev=30475.78 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9503], 10.00th=[ 14353], 20.00th=[ 20055], | 30.00th=[ 24511], 40.00th=[ 28967], 50.00th=[ 33162], 60.00th=[ 39060], | 70.00th=[ 44827], 80.00th=[ 53740], 90.00th=[ 68682], 95.00th=[ 84411], | 99.00th=[131597], 99.50th=[143655], 99.90th=[204473], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 15, max= 112, per=24.85%, avg=55.91, stdev=20.59, samples=209 iops : min= 3, max= 28, avg=13.33, stdev= 5.14, samples=209 write: IOPS=14, BW=59.2KiB/s (60.6kB/s)(6296KiB/106356msec); 0 zone resets clat (usec): min=847, max=215123, avg=30430.30, stdev=30377.89 lat (usec): min=848, max=215125, avg=30432.91, stdev=30376.69 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1254], 10.00th=[ 1713], 20.00th=[ 3752], | 30.00th=[ 6849], 40.00th=[ 15533], 50.00th=[ 23200], 60.00th=[ 30016], | 70.00th=[ 38536], 80.00th=[ 51643], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[135267], 99.50th=[147850], 99.90th=[208667], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 15, max= 143, per=24.94%, avg=58.86, stdev=22.50, samples=209 iops : min= 3, max= 35, avg=14.07, stdev= 5.64, samples=209 lat (usec) : 50=0.26%, 100=1.40%, 250=0.10%, 500=0.07%, 1000=0.20% lat (msec) : 2=6.22%, 4=4.49%, 10=7.23%, 20=12.99%, 50=44.53% lat (msec) : 100=19.50%, 250=2.99%, 750=0.03% cpu : usr=0.06%, sys=5.49%, ctx=6702, 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=179346: Thu Sep 10 18:39:41 2026 read: IOPS=14, BW=59.2KiB/s (60.6kB/s)(5940KiB/100411msec) clat (usec): min=36, max=658220, avg=37335.93, stdev=28576.44 lat (usec): min=36, max=658293, avg=37338.56, stdev=28577.35 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9896], 10.00th=[ 14484], 20.00th=[ 19268], | 30.00th=[ 23200], 40.00th=[ 27919], 50.00th=[ 32900], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 52167], 90.00th=[ 65799], 95.00th=[ 79168], | 99.00th=[116917], 99.50th=[152044], 99.90th=[265290], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 8, max= 110, per=26.18%, avg=58.91, stdev=20.78, samples=197 iops : min= 2, max= 27, avg=14.08, stdev= 5.22, samples=197 write: IOPS=15, BW=63.2KiB/s (64.7kB/s)(6348KiB/100411msec); 0 zone resets clat (usec): min=996, max=197267, avg=28247.70, stdev=28780.97 lat (usec): min=997, max=197268, avg=28249.20, stdev=28780.79 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1467], 20.00th=[ 2900], | 30.00th=[ 5800], 40.00th=[ 13304], 50.00th=[ 20841], 60.00th=[ 27657], | 70.00th=[ 36963], 80.00th=[ 49021], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[124257], 99.50th=[147850], 99.90th=[177210], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 15, max= 134, per=26.64%, avg=62.86, stdev=23.36, samples=197 iops : min= 3, max= 33, avg=15.08, stdev= 5.86, samples=197 lat (usec) : 50=0.36%, 100=1.40%, 250=0.13%, 750=0.03%, 1000=0.07% lat (msec) : 2=7.26%, 4=5.53%, 10=6.22%, 20=14.52%, 50=43.85% lat (msec) : 100=18.36%, 250=2.21%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=5.60%, ctx=6565, 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=179347: Thu Sep 10 18:39:41 2026 read: IOPS=14, BW=58.4KiB/s (59.8kB/s)(6028KiB/103191msec) clat (usec): min=38, max=176112, avg=37343.04, stdev=23912.38 lat (usec): min=39, max=176114, avg=37344.14, stdev=23912.35 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 8586], 10.00th=[ 14222], 20.00th=[ 18744], | 30.00th=[ 23200], 40.00th=[ 27395], 50.00th=[ 32637], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[116917], 99.50th=[143655], 99.90th=[173016], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 15, max= 111, per=25.86%, avg=58.19, stdev=19.60, samples=203 iops : min= 3, max= 27, avg=13.91, stdev= 4.93, samples=203 write: IOPS=15, BW=60.7KiB/s (62.1kB/s)(6260KiB/103191msec); 0 zone resets clat (usec): min=929, max=700415, avg=29885.37, stdev=33831.04 lat (usec): min=930, max=700418, avg=29890.73, stdev=33829.55 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1614], 20.00th=[ 3556], | 30.00th=[ 6980], 40.00th=[ 15533], 50.00th=[ 22676], 60.00th=[ 29230], | 70.00th=[ 38536], 80.00th=[ 50594], 90.00th=[ 67634], 95.00th=[ 88605], | 99.00th=[121111], 99.50th=[152044], 99.90th=[242222], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 15, max= 135, per=25.61%, avg=60.43, stdev=23.98, samples=203 iops : min= 3, max= 33, avg=14.47, stdev= 6.02, samples=203 lat (usec) : 50=0.26%, 100=1.53%, 250=0.29%, 500=0.07%, 1000=0.07% lat (msec) : 2=6.61%, 4=4.20%, 10=7.03%, 20=14.81%, 50=43.29% lat (msec) : 100=19.53%, 250=2.28%, 750=0.03% cpu : usr=0.09%, sys=5.42%, ctx=6677, 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=179348: Thu Sep 10 18:39:41 2026 read: IOPS=14, BW=59.2KiB/s (60.6kB/s)(6052KiB/102213msec) clat (usec): min=34, max=233129, avg=37518.07, stdev=24127.45 lat (usec): min=34, max=233129, avg=37520.20, stdev=24129.01 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 6587], 10.00th=[ 14484], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 28181], 50.00th=[ 32900], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 52167], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[115868], 99.50th=[137364], 99.90th=[189793], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 111, per=26.21%, avg=58.98, stdev=19.31, samples=201 iops : min= 1, max= 27, avg=14.10, stdev= 4.85, samples=201 write: IOPS=15, BW=61.0KiB/s (62.5kB/s)(6236KiB/102213msec); 0 zone resets clat (usec): min=974, max=679598, avg=29018.84, stdev=33367.94 lat (usec): min=975, max=679600, avg=29030.36, stdev=33382.41 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1532], 20.00th=[ 3130], | 30.00th=[ 6390], 40.00th=[ 13435], 50.00th=[ 20579], 60.00th=[ 28181], | 70.00th=[ 36439], 80.00th=[ 49021], 90.00th=[ 68682], 95.00th=[ 89654], | 99.00th=[124257], 99.50th=[135267], 99.90th=[193987], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 150, per=25.74%, avg=60.76, stdev=23.98, samples=201 iops : min= 1, max= 37, avg=14.55, stdev= 6.05, samples=201 lat (usec) : 50=0.42%, 100=1.53%, 250=0.29%, 500=0.07%, 1000=0.10% lat (msec) : 2=6.93%, 4=4.82%, 10=6.97%, 20=14.00%, 50=44.24% lat (msec) : 100=17.84%, 250=2.77%, 750=0.03% cpu : usr=0.08%, sys=5.48%, ctx=6544, 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=226KiB/s (231kB/s), 56.3KiB/s-59.2KiB/s (57.7kB/s-60.6kB/s), io=23.4MiB (24.6MB), run=100411-106356msec WRITE: bw=236KiB/s (242kB/s), 59.2KiB/s-63.2KiB/s (60.6kB/s-64.7kB/s), io=24.6MiB (25.7MB), run=100411-106356msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179340: Thu Sep 10 18:40:14 2026 read: IOPS=10, BW=42.0KiB/s (44.0kB/s)(5992KiB/139355msec) clat (msec): min=4, max=808, avg=36.44, stdev=37.09 lat (msec): min=4, max=808, avg=36.44, stdev=37.09 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 100], | 99.00th=[ 161], 99.50th=[ 182], 99.90th=[ 271], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 144, per=24.89%, avg=42.81, stdev=28.02, samples=274 iops : min= 1, max= 36, avg=10.07, stdev= 7.05, samples=274 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6296KiB/139355msec); 0 zone resets clat (msec): min=12, max=348, avg=53.61, stdev=37.46 lat (msec): min=12, max=348, avg=53.61, stdev=37.46 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 78], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 192], 99.50th=[ 209], 99.90th=[ 296], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 136, per=25.17%, avg=45.30, stdev=25.97, samples=272 iops : min= 1, max= 34, avg=10.69, stdev= 6.53, samples=272 lat (msec) : 10=3.12%, 20=19.82%, 50=46.48%, 100=22.72%, 250=7.71% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.05%, sys=1.96%, ctx=4765, 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=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=179341: Thu Sep 10 18:40:14 2026 read: IOPS=10, BW=42.9KiB/s (43.0kB/s)(5940KiB/138384msec) clat (msec): min=4, max=768, avg=35.76, stdev=34.86 lat (msec): min=4, max=768, avg=35.77, stdev=34.86 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 79], 95.00th=[ 96], | 99.00th=[ 148], 99.50th=[ 159], 99.90th=[ 226], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 151, per=25.00%, avg=43.01, stdev=29.08, samples=270 iops : min= 1, max= 37, avg=10.12, stdev= 7.30, samples=270 write: IOPS=11, BW=45.9KiB/s (46.0kB/s)(6348KiB/138384msec); 0 zone resets clat (msec): min=8, max=300, avg=53.49, stdev=37.30 lat (msec): min=8, max=300, avg=53.49, stdev=37.30 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 79], 90.00th=[ 103], 95.00th=[ 129], | 99.00th=[ 186], 99.50th=[ 211], 99.90th=[ 275], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 135, per=25.30%, avg=45.53, stdev=26.50, samples=273 iops : min= 1, max= 33, avg=10.75, stdev= 6.69, samples=273 lat (msec) : 10=3.65%, 20=19.79%, 50=45.93%, 100=22.98%, 250=7.55% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.06%, sys=1.92%, ctx=4634, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179342: Thu Sep 10 18:40:14 2026 read: IOPS=10, BW=43.7KiB/s (44.7kB/s)(6028KiB/138015msec) clat (msec): min=5, max=264, avg=36.11, stdev=31.66 lat (msec): min=5, max=264, avg=36.11, stdev=31.66 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 104], | 99.00th=[ 159], 99.50th=[ 182], 99.90th=[ 241], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 7, max= 181, per=25.24%, avg=43.41, stdev=27.14, samples=271 iops : min= 1, max= 45, avg=10.23, stdev= 6.84, samples=271 write: IOPS=11, BW=45.4KiB/s (46.4kB/s)(6260KiB/138015msec); 0 zone resets clat (msec): min=9, max=794, avg=53.16, stdev=39.88 lat (msec): min=9, max=794, avg=53.17, stdev=39.88 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 78], 90.00th=[ 102], 95.00th=[ 120], | 99.00th=[ 176], 99.50th=[ 205], 99.90th=[ 305], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 152, per=24.98%, avg=44.97, stdev=27.03, samples=272 iops : min= 1, max= 38, avg=10.61, stdev= 6.81, samples=272 lat (msec) : 10=2.99%, 20=19.89%, 50=46.19%, 100=23.05%, 250=7.75% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=1.95%, ctx=4787, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179343: Thu Sep 10 18:40:14 2026 read: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6052KiB/138157msec) clat (msec): min=5, max=226, avg=35.21, stdev=29.99 lat (msec): min=5, max=226, avg=35.21, stdev=29.99 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 77], 95.00th=[ 97], | 99.00th=[ 144], 99.50th=[ 171], 99.90th=[ 226], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 7, max= 150, per=25.75%, avg=44.29, stdev=28.44, samples=267 iops : min= 1, max= 37, avg=10.44, stdev= 7.15, samples=267 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(6236KiB/138157msec); 0 zone resets clat (msec): min=8, max=779, avg=54.21, stdev=41.63 lat (msec): min=8, max=779, avg=54.21, stdev=41.63 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 79], 90.00th=[ 102], 95.00th=[ 126], | 99.00th=[ 186], 99.50th=[ 215], 99.90th=[ 363], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 135, per=24.81%, avg=44.65, stdev=26.06, samples=272 iops : min= 1, max= 33, avg=10.53, stdev= 6.57, samples=272 lat (msec) : 10=3.39%, 20=20.87%, 50=44.89%, 100=23.50%, 250=7.19% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=1.95%, ctx=4745, 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=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=172KiB/s (176kB/s), 42.9KiB/s-43.8KiB/s (43.0kB/s-44.9kB/s), io=23.4MiB (24.6MB), run=138015-139355msec WRITE: bw=180KiB/s (185kB/s), 45.1KiB/s-45.9KiB/s (46.2kB/s-46.0kB/s), io=24.6MiB (25.7MB), run=138015-139355msec 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=179390: Thu Sep 10 18:40:49 2026 read: IOPS=14, BW=226KiB/s (231kB/s)(5920KiB/26225msec) clat (usec): min=39, max=246069, avg=36054.39, stdev=26331.97 lat (usec): min=40, max=246070, avg=36055.66, stdev=26331.95 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 12125], 20.00th=[ 19792], | 30.00th=[ 23725], 40.00th=[ 26870], 50.00th=[ 31327], 60.00th=[ 36963], | 70.00th=[ 42206], 80.00th=[ 50594], 90.00th=[ 62129], 95.00th=[ 73925], | 99.00th=[123208], 99.50th=[208667], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 90, max= 380, per=24.28%, avg=221.71, stdev=67.91, samples=51 iops : min= 5, max= 23, avg=13.04, stdev= 4.32, samples=51 write: IOPS=15, BW=243KiB/s (249kB/s)(6368KiB/26225msec); 0 zone resets clat (usec): min=1659, max=168647, avg=31693.88, stdev=28754.85 lat (usec): min=1660, max=168649, avg=31696.14, stdev=28755.05 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2180], 10.00th=[ 2900], 20.00th=[ 5211], | 30.00th=[ 9765], 40.00th=[ 16909], 50.00th=[ 24249], 60.00th=[ 31327], | 70.00th=[ 40109], 80.00th=[ 55313], 90.00th=[ 71828], 95.00th=[ 86508], | 99.00th=[117965], 99.50th=[130548], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 30, max= 510, per=25.11%, avg=241.08, stdev=98.41, samples=51 iops : min= 1, max= 31, avg=14.25, stdev= 6.19, samples=51 lat (usec) : 50=0.26%, 100=2.99%, 250=0.39%, 500=0.39% lat (msec) : 2=1.69%, 4=5.60%, 10=8.72%, 20=12.50%, 50=44.92% lat (msec) : 100=19.66%, 250=2.86% cpu : usr=0.05%, sys=6.54%, ctx=1792, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179391: Thu Sep 10 18:40:49 2026 read: IOPS=14, BW=233KiB/s (239kB/s)(5744KiB/24648msec) clat (usec): min=47, max=176173, avg=37216.71, stdev=23504.70 lat (usec): min=48, max=176175, avg=37269.79, stdev=23584.53 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 74], 10.00th=[ 15270], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 29492], 50.00th=[ 33817], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 51119], 90.00th=[ 64226], 95.00th=[ 77071], | 99.00th=[117965], 99.50th=[162530], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 59, max= 377, per=25.30%, avg=230.98, stdev=71.15, samples=48 iops : min= 3, max= 23, avg=13.62, stdev= 4.49, samples=48 write: IOPS=16, BW=265KiB/s (272kB/s)(6544KiB/24648msec); 0 zone resets clat (usec): min=1547, max=168628, avg=27357.27, stdev=26943.92 lat (usec): min=1548, max=168630, avg=27359.56, stdev=26943.96 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1909], 10.00th=[ 2540], 20.00th=[ 4359], | 30.00th=[ 7373], 40.00th=[ 12125], 50.00th=[ 19268], 60.00th=[ 26084], | 70.00th=[ 34866], 80.00th=[ 48497], 90.00th=[ 63701], 95.00th=[ 83362], | 99.00th=[107480], 99.50th=[120062], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 95, max= 534, per=27.19%, avg=261.06, stdev=96.68, samples=48 iops : min= 5, max= 33, avg=15.52, stdev= 6.14, samples=48 lat (usec) : 50=0.13%, 100=2.34%, 250=0.52% lat (msec) : 2=2.99%, 4=6.38%, 10=9.90%, 20=13.80%, 50=44.27% lat (msec) : 100=17.45%, 250=2.21% cpu : usr=0.09%, sys=6.77%, ctx=1777, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179392: Thu Sep 10 18:40:49 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(6256KiB/25843msec) clat (usec): min=49, max=140694, avg=36411.26, stdev=23894.78 lat (usec): min=50, max=140695, avg=36414.82, stdev=23893.91 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 12649], 20.00th=[ 18744], | 30.00th=[ 23462], 40.00th=[ 28705], 50.00th=[ 33162], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 51119], 90.00th=[ 64750], 95.00th=[ 80217], | 99.00th=[123208], 99.50th=[131597], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 90, max= 444, per=26.55%, avg=242.39, stdev=81.69, samples=51 iops : min= 5, max= 27, avg=14.33, stdev= 5.09, samples=51 write: IOPS=14, BW=233KiB/s (239kB/s)(6032KiB/25843msec); 0 zone resets clat (usec): min=1487, max=177467, avg=30375.08, stdev=27142.08 lat (usec): min=1489, max=177469, avg=30380.64, stdev=27139.02 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2245], 10.00th=[ 3458], 20.00th=[ 5604], | 30.00th=[ 10290], 40.00th=[ 17695], 50.00th=[ 24511], 60.00th=[ 30540], | 70.00th=[ 39584], 80.00th=[ 49021], 90.00th=[ 68682], 95.00th=[ 89654], | 99.00th=[112722], 99.50th=[123208], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 63, max= 447, per=24.14%, avg=231.76, stdev=88.66, samples=51 iops : min= 3, max= 27, avg=13.67, stdev= 5.58, samples=51 lat (usec) : 50=0.13%, 100=3.78%, 250=0.13%, 500=0.13% lat (msec) : 2=1.69%, 4=5.47%, 10=7.68%, 20=13.67%, 50=47.40% lat (msec) : 100=17.32%, 250=2.60% cpu : usr=0.07%, sys=6.79%, ctx=1857, 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=179393: Thu Sep 10 18:40:49 2026 read: IOPS=15, BW=246KiB/s (252kB/s)(6032KiB/24477msec) clat (usec): min=48, max=194534, avg=36033.73, stdev=24838.26 lat (usec): min=49, max=194535, avg=36035.28, stdev=24838.27 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 59], 10.00th=[ 93], 20.00th=[ 19530], | 30.00th=[ 24511], 40.00th=[ 28967], 50.00th=[ 33162], 60.00th=[ 38536], | 70.00th=[ 42730], 80.00th=[ 49546], 90.00th=[ 62129], 95.00th=[ 77071], | 99.00th=[127402], 99.50th=[187696], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 30, max= 478, per=26.82%, avg=244.90, stdev=92.33, samples=48 iops : min= 1, max= 29, avg=14.50, stdev= 5.82, samples=48 write: IOPS=15, BW=256KiB/s (262kB/s)(6256KiB/24477msec); 0 zone resets clat (usec): min=1409, max=154584, avg=27232.31, stdev=26389.57 lat (usec): min=1411, max=154585, avg=27235.43, stdev=26388.53 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2040], 10.00th=[ 2802], 20.00th=[ 4621], | 30.00th=[ 7701], 40.00th=[ 12911], 50.00th=[ 18744], 60.00th=[ 26346], | 70.00th=[ 33817], 80.00th=[ 47973], 90.00th=[ 62653], 95.00th=[ 79168], | 99.00th=[111674], 99.50th=[143655], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 63, max= 573, per=26.69%, avg=256.19, stdev=96.34, samples=48 iops : min= 3, max= 35, avg=15.21, stdev= 6.07, samples=48 lat (usec) : 50=0.13%, 100=4.82%, 250=0.13% lat (msec) : 2=2.34%, 4=6.38%, 10=9.24%, 20=13.28%, 50=44.27% lat (msec) : 100=17.45%, 250=1.95% cpu : usr=0.09%, sys=6.79%, ctx=1757, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=913KiB/s (935kB/s), 226KiB/s-246KiB/s (231kB/s-252kB/s), io=23.4MiB (24.5MB), run=24477-26225msec WRITE: bw=961KiB/s (984kB/s), 233KiB/s-265KiB/s (239kB/s-272kB/s), io=24.6MiB (25.8MB), run=24477-26225msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179385: Thu Sep 10 18:40:58 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5920KiB/34496msec) clat (msec): min=6, max=208, avg=36.04, stdev=31.09 lat (msec): min=6, max=208, avg=36.04, stdev=31.09 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 54], 90.00th=[ 81], 95.00th=[ 105], | 99.00th=[ 136], 99.50th=[ 201], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 540, per=24.56%, avg=169.24, stdev=114.50, samples=68 iops : min= 1, max= 33, avg= 9.81, stdev= 7.23, samples=68 write: IOPS=11, BW=185KiB/s (189kB/s)(6368KiB/34496msec); 0 zone resets clat (msec): min=13, max=266, avg=53.00, stdev=35.46 lat (msec): min=13, max=266, avg=53.00, stdev=35.46 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 52], | 70.00th=[ 64], 80.00th=[ 78], 90.00th=[ 99], 95.00th=[ 122], | 99.00th=[ 159], 99.50th=[ 249], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 479, per=25.24%, avg=182.96, stdev=103.21, samples=68 iops : min= 1, max= 29, avg=10.66, stdev= 6.54, samples=68 lat (msec) : 10=3.39%, 20=20.57%, 50=44.14%, 100=24.35%, 250=7.42% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.05%, ctx=1132, 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=179386: Thu Sep 10 18:40:58 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(5744KiB/34658msec) clat (msec): min=7, max=205, avg=35.62, stdev=30.72 lat (msec): min=7, max=206, avg=35.62, stdev=30.72 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 71], 95.00th=[ 118], | 99.00th=[ 153], 99.50th=[ 169], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 30, max= 604, per=24.03%, avg=165.54, stdev=104.05, samples=67 iops : min= 1, max= 37, avg= 9.58, stdev= 6.59, samples=67 write: IOPS=11, BW=189KiB/s (193kB/s)(6544KiB/34658msec); 0 zone resets clat (msec): min=12, max=229, avg=53.12, stdev=33.18 lat (msec): min=12, max=229, avg=53.13, stdev=33.18 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 77], 90.00th=[ 99], 95.00th=[ 118], | 99.00th=[ 165], 99.50th=[ 178], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 479, per=25.56%, avg=185.31, stdev=105.33, samples=68 iops : min= 1, max= 29, avg=10.81, stdev= 6.66, samples=68 lat (msec) : 10=1.43%, 20=19.79%, 50=46.61%, 100=24.74%, 250=7.42% cpu : usr=0.06%, sys=2.05%, ctx=1127, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179387: Thu Sep 10 18:40:58 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(6256KiB/34732msec) clat (msec): min=5, max=210, avg=36.59, stdev=33.37 lat (msec): min=5, max=210, avg=36.59, stdev=33.37 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 86], 95.00th=[ 107], | 99.00th=[ 155], 99.50th=[ 201], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 31, max= 640, per=26.60%, avg=183.26, stdev=130.15, samples=66 iops : min= 1, max= 40, avg=10.68, stdev= 8.19, samples=66 write: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34732msec); 0 zone resets clat (msec): min=12, max=246, avg=53.52, stdev=35.45 lat (msec): min=12, max=246, avg=53.52, stdev=35.45 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 65], 80.00th=[ 77], 90.00th=[ 101], 95.00th=[ 130], | 99.00th=[ 171], 99.50th=[ 232], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 477, per=23.22%, avg=168.32, stdev=98.85, samples=68 iops : min= 1, max= 29, avg= 9.75, stdev= 6.29, samples=68 lat (msec) : 10=3.26%, 20=20.57%, 50=45.18%, 100=22.92%, 250=8.07% cpu : usr=0.06%, sys=2.14%, ctx=1123, 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=179389: Thu Sep 10 18:40:58 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6032KiB/34490msec) clat (msec): min=6, max=206, avg=36.63, stdev=32.65 lat (msec): min=6, max=206, avg=36.63, stdev=32.65 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 57], 90.00th=[ 84], 95.00th=[ 110], | 99.00th=[ 157], 99.50th=[ 165], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 31, max= 480, per=25.36%, avg=174.70, stdev=104.28, samples=67 iops : min= 1, max= 30, avg=10.15, stdev= 6.62, samples=67 write: IOPS=11, BW=181KiB/s (186kB/s)(6256KiB/34490msec); 0 zone resets clat (msec): min=13, max=255, avg=52.31, stdev=33.11 lat (msec): min=13, max=255, avg=52.31, stdev=33.11 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 44], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 73], 90.00th=[ 95], 95.00th=[ 120], | 99.00th=[ 167], 99.50th=[ 178], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 508, per=24.77%, avg=179.57, stdev=105.81, samples=68 iops : min= 1, max= 31, avg=10.46, stdev= 6.67, samples=68 lat (msec) : 10=3.26%, 20=20.57%, 50=44.14%, 100=24.35%, 250=7.55% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=2.08%, ctx=1168, 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=690KiB/s (706kB/s), 166KiB/s-180KiB/s (170kB/s-184kB/s), io=23.4MiB (24.5MB), run=34490-34732msec WRITE: bw=726KiB/s (743kB/s), 174KiB/s-189KiB/s (178kB/s-193kB/s), io=24.6MiB (25.8MB), run=34490-34732msec 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=179404: Thu Sep 10 18:41:11 2026 read: IOPS=1, BW=2022KiB/s (2071kB/s)(7168KiB/3545msec) clat (usec): min=1160, max=258428, avg=169264.35, stdev=83824.13 lat (usec): min=1162, max=258429, avg=169265.51, stdev=83824.00 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1156], 10.00th=[ 1156], 20.00th=[137364], | 30.00th=[170918], 40.00th=[170918], 50.00th=[189793], 60.00th=[193987], | 70.00th=[193987], 80.00th=[231736], 90.00th=[258999], 95.00th=[258999], | 99.00th=[258999], 99.50th=[258999], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 1906, max= 4096, per=73.50%, avg=3253.00, stdev=1178.79, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1444KiB/s (1479kB/s)(5120KiB/3545msec); 0 zone resets clat (msec): min=172, max=727, avg=456.25, stdev=224.67 lat (msec): min=172, max=727, avg=460.12, stdev=222.82 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 642], 80.00th=[ 642], 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= 1903, max= 4055, per=43.07%, avg=2668.67, stdev=1202.79, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 2=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=16.31%, ctx=134, 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=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=179405: Thu Sep 10 18:41:11 2026 read: IOPS=0, BW=445KiB/s (456kB/s)(2048KiB/4601msec) clat (msec): min=139, max=168, avg=153.77, stdev=20.37 lat (msec): min=139, max=168, avg=153.77, stdev=20.37 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 169], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 169], 95.00th=[ 169], | 99.00th=[ 169], 99.50th=[ 169], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 1848, max= 2027, per=43.78%, avg=1937.50, stdev=126.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2226KiB/s (2279kB/s)(10.0MiB/4601msec); 0 zone resets clat (msec): min=84, max=925, avg=426.59, stdev=262.62 lat (msec): min=84, max=925, avg=426.82, stdev=262.71 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 163], | 30.00th=[ 203], 40.00th=[ 253], 50.00th=[ 380], 60.00th=[ 481], | 70.00th=[ 502], 80.00th=[ 592], 90.00th=[ 684], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 2035, max= 4055, per=52.14%, avg=3230.80, stdev=1086.37, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=14.98%, ctx=249, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179406: Thu Sep 10 18:41:11 2026 read: IOPS=1, BW=1328KiB/s (1360kB/s)(6144KiB/4627msec) clat (usec): min=670, max=812039, avg=291708.41, stdev=311021.08 lat (usec): min=671, max=812040, avg=291709.55, stdev=311021.07 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 1156], | 30.00th=[ 1156], 40.00th=[198181], 50.00th=[198181], 60.00th=[263193], | 70.00th=[476054], 80.00th=[476054], 90.00th=[809501], 95.00th=[809501], | 99.00th=[809501], 99.50th=[809501], 99.90th=[809501], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 2027, max= 4055, per=75.64%, avg=3347.67, stdev=1144.70, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1328KiB/s (1360kB/s)(6144KiB/4627msec); 0 zone resets clat (msec): min=179, max=860, avg=468.36, stdev=256.20 lat (msec): min=179, max=860, avg=468.43, stdev=256.21 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 514], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1903, max= 3813, per=39.26%, avg=2432.75, stdev=921.76, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=10.53%, ctx=214, 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=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=179407: Thu Sep 10 18:41:11 2026 read: IOPS=1, BW=1628KiB/s (1668kB/s)(5120KiB/3144msec) clat (msec): min=3, max=294, avg=160.50, stdev=130.41 lat (msec): min=3, max=294, avg=160.50, stdev=130.41 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 61], 40.00th=[ 61], 50.00th=[ 159], 60.00th=[ 159], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 3806, max= 3961, per=87.74%, avg=3883.50, stdev=109.60, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2280KiB/s (2335kB/s)(7168KiB/3144msec); 0 zone resets clat (msec): min=154, max=573, avg=328.91, stdev=152.96 lat (msec): min=154, max=573, avg=329.01, stdev=152.95 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 174], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 305], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 481], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1903, max= 6144, per=56.52%, avg=3502.00, stdev=2032.24, samples=4 iops : min= 1, max= 6, avg= 2.75, stdev= 2.36, samples=4 lat (msec) : 4=8.33%, 100=8.33%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=18.04%, ctx=164, 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=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=4426KiB/s (4532kB/s), 445KiB/s-2022KiB/s (456kB/s-2071kB/s), io=20.0MiB (20.0MB), run=3144-4627msec WRITE: bw=6197KiB/s (6345kB/s), 1328KiB/s-2280KiB/s (1360kB/s-2335kB/s), io=28.0MiB (29.4MB), run=3144-4627msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179409: Thu Sep 10 18:41:11 2026 read: IOPS=1, BW=1643KiB/s (1682kB/s)(7168KiB/4364msec) clat (msec): min=88, max=678, avg=330.98, stdev=232.34 lat (msec): min=88, max=678, avg=330.98, stdev=232.34 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 108], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 296], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 510], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1477, max= 4055, per=56.09%, avg=2317.00, stdev=999.45, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1173KiB/s (1201kB/s)(5120KiB/4364msec); 0 zone resets clat (msec): min=72, max=801, avg=398.77, stdev=260.87 lat (msec): min=72, max=801, avg=399.19, stdev=260.79 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1950, max= 3984, per=45.93%, avg=2656.33, stdev=1150.58, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=4.72%, ctx=120, 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=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=179410: Thu Sep 10 18:41:11 2026 read: IOPS=0, BW=433KiB/s (443kB/s)(2048KiB/4733msec) clat (msec): min=280, max=476, avg=378.22, stdev=138.74 lat (msec): min=280, max=476, avg=378.22, stdev=138.74 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 477], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 1479, max= 1992, per=42.01%, avg=1735.50, stdev=362.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2164KiB/s (2215kB/s)(10.0MiB/4733msec); 0 zone resets clat (msec): min=87, max=938, avg=392.20, stdev=297.35 lat (msec): min=87, max=938, avg=392.27, stdev=297.35 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 89], | 30.00th=[ 116], 40.00th=[ 209], 50.00th=[ 220], 60.00th=[ 388], | 70.00th=[ 567], 80.00th=[ 617], 90.00th=[ 701], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1950, max= 3984, per=41.53%, avg=2402.20, stdev=884.89, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.08%, sys=5.22%, ctx=143, 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=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=179411: Thu Sep 10 18:41:11 2026 read: IOPS=1, BW=1340KiB/s (1372kB/s)(6144KiB/4584msec) clat (msec): min=97, max=670, avg=236.50, stdev=215.42 lat (msec): min=97, max=670, avg=236.50, stdev=215.42 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 126], | 30.00th=[ 126], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 178], | 70.00th=[ 197], 80.00th=[ 197], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 2027, max= 3984, per=64.92%, avg=2682.00, stdev=1127.57, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1340KiB/s (1372kB/s)(6144KiB/4584msec); 0 zone resets clat (msec): min=155, max=1433, avg=526.55, stdev=495.33 lat (msec): min=155, max=1433, avg=526.63, stdev=495.35 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 760], 80.00th=[ 760], 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= 1992, max= 4007, per=43.49%, avg=2515.25, stdev=994.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=4.19%, ctx=96, 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=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=179412: Thu Sep 10 18:41:11 2026 read: IOPS=1, BW=1033KiB/s (1058kB/s)(5120KiB/4957msec) clat (msec): min=73, max=336, avg=139.20, stdev=110.95 lat (msec): min=73, max=336, avg=139.20, stdev=110.95 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 97], 60.00th=[ 97], | 70.00th=[ 101], 80.00th=[ 101], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 2048, max= 6107, per=98.70%, avg=4077.50, stdev=2870.15, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1446KiB/s (1481kB/s)(7168KiB/4957msec); 0 zone resets clat (msec): min=57, max=1215, avg=604.52, stdev=463.76 lat (msec): min=58, max=1215, avg=605.02, stdev=463.75 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 107], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 785], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 978], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1950, max= 2048, per=34.82%, avg=2014.20, stdev=39.54, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=41.67%, 250=16.67%, 500=8.33%, 1000=25.00%, 2000=8.33% cpu : usr=0.00%, sys=4.48%, ctx=130, 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=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=4132KiB/s (4231kB/s), 433KiB/s-1643KiB/s (443kB/s-1682kB/s), io=20.0MiB (20.0MB), run=4364-4957msec WRITE: bw=5784KiB/s (5923kB/s), 1173KiB/s-2164KiB/s (1201kB/s-2215kB/s), io=28.0MiB (29.4MB), run=4364-4957msec 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=179418: Thu Sep 10 18:41:24 2026 read: IOPS=1, BW=7590KiB/s (7772kB/s)(12.0MiB/1619msec) clat (msec): min=441, max=646, avg=520.42, stdev=110.56 lat (msec): min=441, max=646, avg=520.42, stdev=110.55 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 651], 80.00th=[ 651], 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= 7223, max= 8047, per=100.00%, avg=7635.00, stdev=582.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=7.91%, ctx=54, 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=179419: Thu Sep 10 18:41:24 2026 read: IOPS=0, BW=1347KiB/s (1380kB/s)(4096KiB/3040msec) clat (nsec): min=348939k, max=348939k, avg=348938583.00, stdev= 0.00 lat (nsec): min=348941k, max=348941k, avg=348940954.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 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= 6450, max= 6450, per=100.00%, avg=6450.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2695KiB/s (2759kB/s)(8192KiB/3040msec); 0 zone resets clat (msec): min=628, max=2017, avg=1323.22, stdev=982.27 lat (msec): min=629, max=2018, avg=1323.67, stdev=982.31 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 2022], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 8000, max= 8000, per=80.31%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.07%, sys=4.28%, ctx=51, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179420: Thu Sep 10 18:41:24 2026 write: IOPS=0, BW=3736KiB/s (3826kB/s)(12.0MiB/3289msec); 0 zone resets clat (msec): min=372, max=1905, avg=1040.65, stdev=785.35 lat (msec): min=374, max=1906, avg=1041.29, stdev=784.89 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7984, max= 8143, per=80.94%, avg=8063.50, stdev=112.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.02%, ctx=67, 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=179421: Thu Sep 10 18:41:24 2026 write: IOPS=1, BW=7178KiB/s (7350kB/s)(12.0MiB/1712msec); 0 zone resets clat (msec): min=297, max=1046, avg=554.03, stdev=426.93 lat (msec): min=298, max=1047, avg=554.57, stdev=426.86 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 6942, max= 8000, per=74.99%, avg=7471.00, stdev=748.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.43%, ctx=47, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5389KiB/s (5519kB/s), 1347KiB/s-7590KiB/s (1380kB/s-7772kB/s), io=16.0MiB (16.8MB), run=1619-3040msec WRITE: bw=9963KiB/s (10.2MB/s), 2695KiB/s-7178KiB/s (2759kB/s-7350kB/s), io=32.0MiB (33.6MB), run=1712-3289msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179423: Thu Sep 10 18:41:24 2026 read: IOPS=1, BW=5440KiB/s (5570kB/s)(12.0MiB/2259msec) clat (msec): min=682, max=769, avg=712.63, stdev=49.34 lat (msec): min=682, max=769, avg=712.64, stdev=49.34 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=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.27%, sys=15.32%, ctx=517, 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=179424: Thu Sep 10 18:41:24 2026 read: IOPS=0, BW=1973KiB/s (2020kB/s)(4096KiB/2076msec) clat (nsec): min=636545k, max=636545k, avg=636545053.00, stdev= 0.00 lat (nsec): min=636547k, max=636547k, avg=636547383.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] 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=3946KiB/s (4041kB/s)(8192KiB/2076msec); 0 zone resets clat (msec): min=180, max=1069, avg=625.36, stdev=628.64 lat (msec): min=181, max=1070, avg=626.03, stdev=628.20 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 1070], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 8159, max= 8159, per=76.70%, 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%, 750=33.33%, 2000=33.33% cpu : usr=0.19%, sys=8.63%, ctx=160, 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=179425: Thu Sep 10 18:41:24 2026 write: IOPS=0, BW=3990KiB/s (4085kB/s)(12.0MiB/3080msec); 0 zone resets clat (msec): min=177, max=1767, avg=1010.39, stdev=798.00 lat (msec): min=177, max=1769, avg=1011.30, stdev=798.69 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8000, max= 8000, per=75.20%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.61%, ctx=88, 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=179426: Thu Sep 10 18:41:24 2026 write: IOPS=1, BW=4423KiB/s (4529kB/s)(12.0MiB/2778msec); 0 zone resets clat (msec): min=311, max=1982, avg=903.08, stdev=936.24 lat (msec): min=311, max=1982, avg=903.39, stdev=936.12 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 5712, max= 7787, per=63.45%, avg=6749.50, stdev=1467.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.04%, sys=5.76%, 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 Run status group 0 (all jobs): READ: bw=7253KiB/s (7427kB/s), 1973KiB/s-5440KiB/s (2020kB/s-5570kB/s), io=16.0MiB (16.8MB), run=2076-2259msec WRITE: bw=10.4MiB/s (10.9MB/s), 3946KiB/s-4423KiB/s (4041kB/s-4529kB/s), io=32.0MiB (33.6MB), run=2076-3080msec