== sanity test 398b: DIO and buffer IO race ============== 20:14:47 (1788567287) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.44839 s, 7.8 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=178355: Fri Sep 4 20:17:44 2026 read: IOPS=9, BW=38.5KiB/s (39.5kB/s)(5992KiB/155532msec) clat (usec): min=30, max=882860, avg=56895.51, stdev=49043.08 lat (usec): min=30, max=882861, avg=56902.44, stdev=49043.66 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 99], 10.00th=[ 18482], 20.00th=[ 26084], | 30.00th=[ 32637], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 53740], | 70.00th=[ 65799], 80.00th=[ 79168], 90.00th=[104334], 95.00th=[132645], | 99.00th=[227541], 99.50th=[304088], 99.90th=[459277], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 95, per=24.82%, avg=38.23, stdev=18.95, samples=304 iops : min= 1, max= 23, avg= 8.88, stdev= 4.77, samples=304 write: IOPS=10, BW=40.5KiB/s (41.5kB/s)(6296KiB/155532msec); 0 zone resets clat (usec): min=772, max=428160, avg=44325.73, stdev=49095.45 lat (usec): min=773, max=428161, avg=44328.68, stdev=49094.50 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1434], 20.00th=[ 4080], | 30.00th=[ 9241], 40.00th=[ 19530], 50.00th=[ 32113], 60.00th=[ 43254], | 70.00th=[ 54789], 80.00th=[ 72877], 90.00th=[107480], 95.00th=[137364], | 99.00th=[206570], 99.50th=[278922], 99.90th=[400557], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 7, max= 135, per=25.37%, avg=40.85, stdev=19.51, samples=299 iops : min= 1, max= 33, avg= 9.54, stdev= 4.91, samples=299 lat (usec) : 50=0.23%, 100=2.25%, 250=0.07%, 500=0.03%, 1000=0.23% lat (msec) : 2=6.35%, 4=3.52%, 10=5.86%, 20=7.91%, 50=34.24% lat (msec) : 100=27.83%, 250=10.87%, 500=0.59%, 1000=0.03% cpu : usr=0.07%, sys=4.38%, ctx=6088, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178356: Fri Sep 4 20:17:44 2026 read: IOPS=9, BW=38.5KiB/s (39.4kB/s)(5940KiB/154289msec) clat (usec): min=45, max=356560, avg=56142.33, stdev=41296.11 lat (usec): min=46, max=356561, avg=56143.83, stdev=41295.98 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 120], 10.00th=[ 18220], 20.00th=[ 26870], | 30.00th=[ 32375], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 66847], 80.00th=[ 80217], 90.00th=[105382], 95.00th=[130548], | 99.00th=[202376], 99.50th=[254804], 99.90th=[329253], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 87, per=24.91%, avg=38.37, stdev=17.81, samples=299 iops : min= 1, max= 21, avg= 8.92, stdev= 4.49, samples=299 write: IOPS=10, BW=41.1KiB/s (42.1kB/s)(6348KiB/154289msec); 0 zone resets clat (usec): min=977, max=857127, avg=44323.27, stdev=57238.36 lat (usec): min=978, max=857129, avg=44326.14, stdev=57238.50 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1352], 20.00th=[ 3326], | 30.00th=[ 6783], 40.00th=[ 14746], 50.00th=[ 27395], 60.00th=[ 38536], | 70.00th=[ 53216], 80.00th=[ 73925], 90.00th=[107480], 95.00th=[149947], | 99.00th=[252707], 99.50th=[337642], 99.90th=[417334], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 135, per=25.46%, avg=40.99, stdev=22.57, samples=299 iops : min= 1, max= 33, avg= 9.58, stdev= 5.68, samples=299 lat (usec) : 50=0.20%, 100=2.18%, 250=0.20%, 750=0.03%, 1000=0.16% lat (msec) : 2=7.52%, 4=3.91%, 10=6.54%, 20=7.45%, 50=33.11% lat (msec) : 100=27.31%, 250=10.55%, 500=0.81%, 1000=0.03% cpu : usr=0.07%, sys=4.25%, ctx=5937, 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=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=178357: Fri Sep 4 20:17:44 2026 read: IOPS=9, BW=39.0KiB/s (39.0kB/s)(6028KiB/154416msec) clat (usec): min=35, max=414087, avg=55675.94, stdev=41089.84 lat (usec): min=36, max=414088, avg=55679.70, stdev=41089.95 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 807], 10.00th=[ 18220], 20.00th=[ 25822], | 30.00th=[ 32637], 40.00th=[ 38536], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 65274], 80.00th=[ 78119], 90.00th=[105382], 95.00th=[133694], | 99.00th=[191890], 99.50th=[227541], 99.90th=[358613], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 102, per=25.23%, avg=38.85, stdev=19.05, samples=300 iops : min= 1, max= 25, avg= 9.04, stdev= 4.79, samples=300 write: IOPS=10, BW=40.5KiB/s (41.5kB/s)(6260KiB/154416msec); 0 zone resets clat (usec): min=825, max=961040, avg=44681.75, stdev=57498.52 lat (usec): min=826, max=961042, avg=44684.17, stdev=57498.69 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1352], 20.00th=[ 3556], | 30.00th=[ 7373], 40.00th=[ 16712], 50.00th=[ 29230], 60.00th=[ 40633], | 70.00th=[ 53740], 80.00th=[ 74974], 90.00th=[108528], 95.00th=[139461], | 99.00th=[248513], 99.50th=[287310], 99.90th=[526386], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 7, max= 103, per=25.18%, avg=40.53, stdev=20.38, samples=298 iops : min= 1, max= 25, avg= 9.47, stdev= 5.13, samples=298 lat (usec) : 50=0.29%, 100=1.95%, 250=0.13%, 500=0.07%, 1000=0.20% lat (msec) : 2=7.75%, 4=2.86%, 10=6.77%, 20=7.10%, 50=33.79% lat (msec) : 100=27.60%, 250=10.87%, 500=0.55%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.30%, ctx=6136, 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=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=178358: Fri Sep 4 20:17:44 2026 read: IOPS=9, BW=38.9KiB/s (39.9kB/s)(6052KiB/155435msec) clat (usec): min=36, max=572085, avg=55908.34, stdev=43810.15 lat (usec): min=37, max=572086, avg=55912.66, stdev=43808.41 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 76], 10.00th=[ 16909], 20.00th=[ 25035], | 30.00th=[ 31589], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 64750], 80.00th=[ 81265], 90.00th=[108528], 95.00th=[139461], | 99.00th=[204473], 99.50th=[225444], 99.90th=[383779], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 7, max= 119, per=25.58%, avg=39.40, stdev=18.79, samples=297 iops : min= 1, max= 29, avg= 9.19, stdev= 4.73, samples=297 write: IOPS=10, BW=40.1KiB/s (41.1kB/s)(6236KiB/155435msec); 0 zone resets clat (usec): min=861, max=956155, avg=45105.44, stdev=55400.99 lat (usec): min=863, max=956160, avg=45108.43, stdev=55401.11 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1319], 20.00th=[ 3720], | 30.00th=[ 7635], 40.00th=[ 16712], 50.00th=[ 29492], 60.00th=[ 41157], | 70.00th=[ 54789], 80.00th=[ 78119], 90.00th=[114820], 95.00th=[139461], | 99.00th=[229639], 99.50th=[291505], 99.90th=[383779], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 111, per=24.74%, avg=39.83, stdev=19.61, samples=302 iops : min= 1, max= 27, avg= 9.30, stdev= 4.93, samples=302 lat (usec) : 50=0.26%, 100=2.54%, 250=0.13%, 500=0.03%, 1000=0.16% lat (msec) : 2=7.29%, 4=3.16%, 10=6.71%, 20=7.55%, 50=33.53% lat (msec) : 100=25.81%, 250=12.37%, 500=0.39%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.27%, ctx=6040, 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=154KiB/s (158kB/s), 38.5KiB/s-39.0KiB/s (39.4kB/s-39.0kB/s), io=23.4MiB (24.6MB), run=154289-155532msec WRITE: bw=162KiB/s (166kB/s), 40.1KiB/s-41.1KiB/s (41.1kB/s-42.1kB/s), io=24.6MiB (25.7MB), run=154289-155532msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178360: Fri Sep 4 20:18:35 2026 read: IOPS=7, BW=29.2KiB/s (29.9kB/s)(5992KiB/205084msec) clat (msec): min=6, max=906, avg=52.71, stdev=59.77 lat (msec): min=6, max=906, avg=52.71, stdev=59.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 121], 95.00th=[ 157], | 99.00th=[ 279], 99.50th=[ 334], 99.90th=[ 592], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 127, per=26.15%, avg=30.34, stdev=22.45, samples=381 iops : min= 1, max= 31, avg= 6.91, stdev= 5.67, samples=381 write: IOPS=7, BW=30.7KiB/s (31.4kB/s)(6296KiB/205084msec); 0 zone resets clat (msec): min=11, max=725, avg=79.99, stdev=64.68 lat (msec): min=11, max=725, avg=79.99, stdev=64.68 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 68], | 70.00th=[ 89], 80.00th=[ 118], 90.00th=[ 159], 95.00th=[ 201], | 99.00th=[ 338], 99.50th=[ 368], 99.90th=[ 502], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 110, per=25.81%, avg=31.23, stdev=21.36, samples=389 iops : min= 1, max= 27, avg= 7.13, stdev= 5.40, samples=389 lat (msec) : 10=1.56%, 20=11.00%, 50=42.84%, 100=25.16%, 250=17.35% lat (msec) : 500=1.92%, 750=0.13%, 1000=0.03% cpu : usr=0.05%, sys=1.39%, ctx=4578, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178361: Fri Sep 4 20:18:35 2026 read: IOPS=7, BW=28.7KiB/s (29.4kB/s)(5940KiB/206731msec) clat (msec): min=6, max=892, avg=52.81, stdev=55.93 lat (msec): min=6, max=892, avg=52.82, stdev=55.93 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 55], 80.00th=[ 79], 90.00th=[ 117], 95.00th=[ 165], | 99.00th=[ 268], 99.50th=[ 288], 99.90th=[ 338], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 127, per=25.96%, avg=30.11, stdev=22.67, samples=379 iops : min= 1, max= 31, avg= 6.86, stdev= 5.72, samples=379 write: IOPS=7, BW=30.7KiB/s (31.4kB/s)(6348KiB/206731msec); 0 zone resets clat (msec): min=10, max=756, avg=80.73, stdev=67.03 lat (msec): min=10, max=756, avg=80.73, stdev=67.03 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 69], | 70.00th=[ 87], 80.00th=[ 117], 90.00th=[ 167], 95.00th=[ 207], | 99.00th=[ 338], 99.50th=[ 380], 99.90th=[ 592], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 95, per=25.44%, avg=30.78, stdev=20.83, samples=396 iops : min= 1, max= 23, avg= 7.02, stdev= 5.26, samples=396 lat (msec) : 10=1.76%, 20=11.04%, 50=42.02%, 100=25.55%, 250=17.42% lat (msec) : 500=2.05%, 750=0.10%, 1000=0.07% cpu : usr=0.04%, sys=1.39%, ctx=4692, 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=178362: Fri Sep 4 20:18:35 2026 read: IOPS=7, BW=29.2KiB/s (29.9kB/s)(6028KiB/206475msec) clat (msec): min=5, max=609, avg=54.11, stdev=57.59 lat (msec): min=5, max=609, avg=54.11, stdev=57.59 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 82], 90.00th=[ 123], 95.00th=[ 161], | 99.00th=[ 279], 99.50th=[ 317], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 111, per=25.96%, avg=30.11, stdev=21.56, samples=386 iops : min= 1, max= 27, avg= 6.86, stdev= 5.46, samples=386 write: IOPS=7, BW=30.3KiB/s (31.0kB/s)(6260KiB/206475msec); 0 zone resets clat (msec): min=12, max=931, avg=79.71, stdev=66.92 lat (msec): min=12, max=931, avg=79.71, stdev=66.92 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 88], 80.00th=[ 114], 90.00th=[ 157], 95.00th=[ 201], | 99.00th=[ 334], 99.50th=[ 409], 99.90th=[ 535], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 103, per=25.72%, avg=31.12, stdev=21.57, samples=388 iops : min= 1, max= 25, avg= 7.10, stdev= 5.45, samples=388 lat (msec) : 10=1.30%, 20=12.01%, 50=40.89%, 100=25.68%, 250=18.13% lat (msec) : 500=1.79%, 750=0.16%, 1000=0.03% cpu : usr=0.06%, sys=1.44%, ctx=4673, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178363: Fri Sep 4 20:18:35 2026 read: IOPS=7, BW=29.5KiB/s (30.2kB/s)(6052KiB/204901msec) clat (msec): min=5, max=607, avg=51.74, stdev=57.88 lat (msec): min=5, max=607, avg=51.74, stdev=57.89 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 72], 90.00th=[ 115], 95.00th=[ 159], | 99.00th=[ 284], 99.50th=[ 368], 99.90th=[ 584], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 119, per=26.53%, avg=30.77, stdev=23.09, samples=380 iops : min= 1, max= 29, avg= 7.01, stdev= 5.82, samples=380 write: IOPS=7, BW=30.4KiB/s (31.2kB/s)(6236KiB/204901msec); 0 zone resets clat (msec): min=10, max=931, avg=81.13, stdev=65.63 lat (msec): min=10, max=931, avg=81.13, stdev=65.63 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 71], | 70.00th=[ 91], 80.00th=[ 120], 90.00th=[ 165], 95.00th=[ 207], | 99.00th=[ 296], 99.50th=[ 393], 99.90th=[ 510], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 95, per=25.50%, avg=30.86, stdev=21.23, samples=390 iops : min= 1, max= 23, avg= 7.04, stdev= 5.37, samples=390 lat (msec) : 10=1.43%, 20=12.21%, 50=41.93%, 100=24.41%, 250=18.23% lat (msec) : 500=1.60%, 750=0.16%, 1000=0.03% cpu : usr=0.05%, sys=1.32%, ctx=4600, 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=116KiB/s (119kB/s), 28.7KiB/s-29.5KiB/s (29.4kB/s-30.2kB/s), io=23.4MiB (24.6MB), run=204901-206731msec WRITE: bw=122KiB/s (125kB/s), 30.3KiB/s-30.7KiB/s (31.0kB/s-31.4kB/s), io=24.6MiB (25.7MB), run=204901-206731msec 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=178414: Fri Sep 4 20:19:33 2026 read: IOPS=9, BW=144KiB/s (148kB/s)(5920KiB/41080msec) clat (usec): min=47, max=245468, avg=58832.72, stdev=41896.19 lat (usec): min=48, max=245469, avg=58838.02, stdev=41892.48 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 57], 10.00th=[ 84], 20.00th=[ 27395], | 30.00th=[ 34341], 40.00th=[ 44827], 50.00th=[ 50594], 60.00th=[ 60031], | 70.00th=[ 71828], 80.00th=[ 86508], 90.00th=[113771], 95.00th=[139461], | 99.00th=[193987], 99.50th=[219153], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 447, per=25.15%, avg=141.85, stdev=65.38, samples=80 iops : min= 1, max= 27, avg= 8.05, stdev= 4.12, samples=80 write: IOPS=9, BW=155KiB/s (159kB/s)(6368KiB/41080msec); 0 zone resets clat (usec): min=1219, max=270865, avg=48250.00, stdev=48986.47 lat (usec): min=1221, max=270867, avg=48252.06, stdev=48986.46 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1778], 10.00th=[ 2606], 20.00th=[ 6783], | 30.00th=[ 11731], 40.00th=[ 21103], 50.00th=[ 32113], 60.00th=[ 46400], | 70.00th=[ 64750], 80.00th=[ 84411], 90.00th=[123208], 95.00th=[147850], | 99.00th=[189793], 99.50th=[240124], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 379, per=25.91%, avg=153.62, stdev=78.80, samples=80 iops : min= 1, max= 23, avg= 8.80, stdev= 4.96, samples=80 lat (usec) : 50=0.13%, 100=4.69%, 250=0.26% lat (msec) : 2=4.30%, 4=3.65%, 10=6.77%, 20=8.07%, 50=28.52% lat (msec) : 100=28.65%, 250=14.84%, 500=0.13% cpu : usr=0.08%, sys=4.43%, ctx=1499, 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=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=178415: Fri Sep 4 20:19:33 2026 read: IOPS=8, BW=135KiB/s (139kB/s)(5744KiB/42468msec) clat (usec): min=38, max=315967, avg=58866.32, stdev=44720.27 lat (usec): min=38, max=315968, avg=58867.62, stdev=44720.16 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 72], 20.00th=[ 24249], | 30.00th=[ 34341], 40.00th=[ 43254], 50.00th=[ 50070], 60.00th=[ 63701], | 70.00th=[ 74974], 80.00th=[ 88605], 90.00th=[112722], 95.00th=[135267], | 99.00th=[212861], 99.50th=[233833], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 22, max= 350, per=24.12%, avg=136.02, stdev=72.57, samples=82 iops : min= 1, max= 21, avg= 7.67, stdev= 4.56, samples=82 write: IOPS=9, BW=154KiB/s (158kB/s)(6544KiB/42468msec); 0 zone resets clat (usec): min=1316, max=336340, avg=50960.57, stdev=52744.40 lat (usec): min=1318, max=336342, avg=50962.66, stdev=52744.29 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1811], 10.00th=[ 2769], 20.00th=[ 7963], | 30.00th=[ 12911], 40.00th=[ 22414], 50.00th=[ 34341], 60.00th=[ 46924], | 70.00th=[ 65799], 80.00th=[ 88605], 90.00th=[120062], 95.00th=[147850], | 99.00th=[227541], 99.50th=[254804], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 31, max= 415, per=25.75%, avg=152.69, stdev=71.64, samples=83 iops : min= 1, max= 25, avg= 8.73, stdev= 4.50, samples=83 lat (usec) : 50=0.78%, 100=4.82%, 250=0.26% lat (msec) : 2=3.52%, 4=3.12%, 10=7.29%, 20=8.33%, 50=28.52% lat (msec) : 100=26.95%, 250=15.76%, 500=0.65% cpu : usr=0.07%, sys=4.54%, ctx=1559, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178416: Fri Sep 4 20:19:33 2026 read: IOPS=9, BW=151KiB/s (154kB/s)(6256KiB/41469msec) clat (usec): min=37, max=260298, avg=58607.53, stdev=42923.04 lat (usec): min=37, max=260300, avg=58609.38, stdev=42923.18 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 70], 20.00th=[ 23200], | 30.00th=[ 33817], 40.00th=[ 44827], 50.00th=[ 55837], 60.00th=[ 66323], | 70.00th=[ 74974], 80.00th=[ 88605], 90.00th=[111674], 95.00th=[128451], | 99.00th=[210764], 99.50th=[238027], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 383, per=27.19%, avg=153.34, stdev=62.27, samples=80 iops : min= 1, max= 23, avg= 8.77, stdev= 3.93, samples=80 write: IOPS=9, BW=145KiB/s (149kB/s)(6032KiB/41469msec); 0 zone resets clat (usec): min=1486, max=299597, avg=47501.28, stdev=50848.37 lat (usec): min=1488, max=299598, avg=47512.73, stdev=50848.14 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1745], 10.00th=[ 2245], 20.00th=[ 6521], | 30.00th=[ 12649], 40.00th=[ 19792], 50.00th=[ 30802], 60.00th=[ 44827], | 70.00th=[ 58983], 80.00th=[ 78119], 90.00th=[120062], 95.00th=[152044], | 99.00th=[244319], 99.50th=[274727], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 30, max= 510, per=25.01%, avg=148.29, stdev=84.49, samples=79 iops : min= 1, max= 31, avg= 8.46, stdev= 5.29, samples=79 lat (usec) : 50=0.78%, 100=5.86%, 250=0.26% lat (msec) : 2=4.56%, 4=3.12%, 10=5.34%, 20=8.85%, 50=25.00% lat (msec) : 100=31.77%, 250=13.93%, 500=0.52% cpu : usr=0.08%, sys=4.64%, ctx=1601, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178417: Fri Sep 4 20:19:33 2026 read: IOPS=9, BW=148KiB/s (152kB/s)(6032KiB/40680msec) clat (usec): min=39, max=377029, avg=59346.29, stdev=48362.84 lat (usec): min=39, max=377029, avg=59347.56, stdev=48362.87 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 58], 10.00th=[ 69], 20.00th=[ 21890], | 30.00th=[ 32900], 40.00th=[ 41681], 50.00th=[ 51643], 60.00th=[ 61080], | 70.00th=[ 76022], 80.00th=[ 92799], 90.00th=[117965], 95.00th=[147850], | 99.00th=[198181], 99.50th=[295699], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 23, max= 286, per=25.73%, avg=145.11, stdev=64.20, samples=79 iops : min= 1, max= 17, avg= 8.25, stdev= 4.01, samples=79 write: IOPS=9, BW=154KiB/s (157kB/s)(6256KiB/40680msec); 0 zone resets clat (usec): min=1119, max=333171, avg=45545.75, stdev=47801.02 lat (usec): min=1121, max=333175, avg=45547.73, stdev=47801.09 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1795], 10.00th=[ 2606], 20.00th=[ 5932], | 30.00th=[ 11731], 40.00th=[ 21103], 50.00th=[ 31327], 60.00th=[ 42206], | 70.00th=[ 55313], 80.00th=[ 78119], 90.00th=[109577], 95.00th=[143655], | 99.00th=[202376], 99.50th=[212861], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 31, max= 319, per=25.50%, avg=151.19, stdev=80.01, samples=79 iops : min= 1, max= 19, avg= 8.65, stdev= 5.04, samples=79 lat (usec) : 50=0.26%, 100=6.51%, 250=0.26%, 500=0.26% lat (msec) : 2=4.04%, 4=3.39%, 10=6.38%, 20=7.94%, 50=27.86% lat (msec) : 100=28.26%, 250=14.45%, 500=0.39% cpu : usr=0.05%, sys=4.36%, ctx=1471, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=564KiB/s (578kB/s), 135KiB/s-151KiB/s (139kB/s-154kB/s), io=23.4MiB (24.5MB), run=40680-42468msec WRITE: bw=593KiB/s (608kB/s), 145KiB/s-155KiB/s (149kB/s-159kB/s), io=24.6MiB (25.8MB), run=40680-42468msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178410: Fri Sep 4 20:19:52 2026 read: IOPS=6, BW=99.2KiB/s (102kB/s)(5920KiB/59704msec) clat (msec): min=8, max=373, avg=64.27, stdev=51.75 lat (msec): min=8, max=373, avg=64.27, stdev=51.75 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 59], | 70.00th=[ 74], 80.00th=[ 93], 90.00th=[ 129], 95.00th=[ 178], | 99.00th=[ 255], 99.50th=[ 296], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 29, max= 312, per=26.55%, avg=104.62, stdev=60.29, samples=110 iops : min= 1, max= 19, avg= 5.72, stdev= 3.83, samples=110 write: IOPS=6, BW=107KiB/s (109kB/s)(6368KiB/59704msec); 0 zone resets clat (msec): min=19, max=544, avg=90.07, stdev=63.72 lat (msec): min=19, max=544, avg=90.08, stdev=63.72 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 30], 10.00th=[ 34], 20.00th=[ 43], | 30.00th=[ 52], 40.00th=[ 62], 50.00th=[ 74], 60.00th=[ 85], | 70.00th=[ 102], 80.00th=[ 128], 90.00th=[ 167], 95.00th=[ 211], | 99.00th=[ 342], 99.50th=[ 414], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 29, max= 351, per=26.28%, avg=108.80, stdev=62.73, samples=114 iops : min= 1, max= 21, avg= 5.99, stdev= 3.98, samples=114 lat (msec) : 10=0.39%, 20=4.95%, 50=34.38%, 100=35.55%, 250=22.66% lat (msec) : 500=1.95%, 750=0.13% cpu : usr=0.04%, sys=1.36%, ctx=1199, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178411: Fri Sep 4 20:19:52 2026 read: IOPS=5, BW=94.5KiB/s (96.8kB/s)(5744KiB/60768msec) clat (msec): min=7, max=451, avg=63.92, stdev=54.91 lat (msec): min=7, max=451, avg=63.92, stdev=54.91 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 26], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 47], 60.00th=[ 55], | 70.00th=[ 70], 80.00th=[ 89], 90.00th=[ 130], 95.00th=[ 176], | 99.00th=[ 264], 99.50th=[ 372], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 23, max= 351, per=26.52%, avg=104.50, stdev=67.99, samples=107 iops : min= 1, max= 21, avg= 5.71, stdev= 4.32, samples=107 write: IOPS=6, BW=108KiB/s (110kB/s)(6544KiB/60768msec); 0 zone resets clat (msec): min=14, max=342, avg=91.89, stdev=61.17 lat (msec): min=14, max=342, avg=91.89, stdev=61.17 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 29], 10.00th=[ 35], 20.00th=[ 45], | 30.00th=[ 54], 40.00th=[ 63], 50.00th=[ 74], 60.00th=[ 87], | 70.00th=[ 101], 80.00th=[ 136], 90.00th=[ 176], 95.00th=[ 218], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 351, per=26.19%, avg=108.42, stdev=62.89, samples=118 iops : min= 1, max= 21, avg= 5.95, stdev= 3.96, samples=118 lat (msec) : 10=0.65%, 20=5.60%, 50=32.81%, 100=37.37%, 250=21.09% lat (msec) : 500=2.47% cpu : usr=0.03%, sys=1.48%, ctx=1383, 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=178412: Fri Sep 4 20:19:52 2026 read: IOPS=6, BW=104KiB/s (107kB/s)(6256KiB/60046msec) clat (msec): min=6, max=309, avg=59.60, stdev=47.07 lat (msec): min=6, max=309, avg=59.60, stdev=47.07 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 31], 40.00th=[ 40], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 65], 80.00th=[ 90], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 249], 99.50th=[ 271], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 415, per=28.12%, avg=110.81, stdev=73.84, samples=111 iops : min= 1, max= 25, avg= 6.12, stdev= 4.66, samples=111 write: IOPS=6, BW=100KiB/s (103kB/s)(6032KiB/60046msec); 0 zone resets clat (msec): min=15, max=545, avg=96.89, stdev=70.19 lat (msec): min=15, max=545, avg=96.89, stdev=70.19 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 31], 10.00th=[ 36], 20.00th=[ 46], | 30.00th=[ 55], 40.00th=[ 65], 50.00th=[ 74], 60.00th=[ 89], | 70.00th=[ 116], 80.00th=[ 138], 90.00th=[ 186], 95.00th=[ 232], | 99.00th=[ 330], 99.50th=[ 542], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 29, max= 286, per=24.40%, avg=101.01, stdev=56.12, samples=117 iops : min= 1, max= 17, avg= 5.49, stdev= 3.55, samples=117 lat (msec) : 10=0.39%, 20=6.77%, 50=34.11%, 100=33.85%, 250=22.79% lat (msec) : 500=1.82%, 750=0.26% cpu : usr=0.05%, sys=1.47%, ctx=1285, 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=178413: Fri Sep 4 20:19:52 2026 read: IOPS=6, BW=101KiB/s (104kB/s)(6032KiB/59551msec) clat (msec): min=8, max=285, avg=59.83, stdev=44.49 lat (msec): min=8, max=285, avg=59.83, stdev=44.49 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 66], 80.00th=[ 86], 90.00th=[ 115], 95.00th=[ 148], | 99.00th=[ 234], 99.50th=[ 259], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 284, per=26.78%, avg=105.52, stdev=63.62, samples=112 iops : min= 1, max= 17, avg= 5.78, stdev= 4.05, samples=112 write: IOPS=6, BW=105KiB/s (108kB/s)(6256KiB/59551msec); 0 zone resets clat (msec): min=14, max=536, avg=93.78, stdev=64.45 lat (msec): min=14, max=536, avg=93.78, stdev=64.45 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 28], 10.00th=[ 35], 20.00th=[ 43], | 30.00th=[ 53], 40.00th=[ 64], 50.00th=[ 77], 60.00th=[ 92], | 70.00th=[ 111], 80.00th=[ 136], 90.00th=[ 176], 95.00th=[ 215], | 99.00th=[ 338], 99.50th=[ 384], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 31, max= 383, per=25.57%, avg=105.86, stdev=62.05, samples=116 iops : min= 1, max= 23, avg= 5.80, stdev= 3.91, samples=116 lat (msec) : 10=0.13%, 20=4.95%, 50=35.42%, 100=34.64%, 250=23.31% lat (msec) : 500=1.43%, 750=0.13% cpu : usr=0.03%, sys=1.30%, ctx=1203, 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=394KiB/s (404kB/s), 94.5KiB/s-104KiB/s (96.8kB/s-107kB/s), io=23.4MiB (24.5MB), run=59551-60768msec WRITE: bw=415KiB/s (425kB/s), 100KiB/s-108KiB/s (103kB/s-110kB/s), io=24.6MiB (25.8MB), run=59551-60768msec 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=178433: Fri Sep 4 20:20:13 2026 read: IOPS=1, BW=1696KiB/s (1737kB/s)(7168KiB/4226msec) clat (msec): min=180, max=613, avg=332.43, stdev=171.14 lat (msec): min=180, max=613, avg=332.43, stdev=171.14 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 190], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 251], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 456], 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= 1756, max= 3644, per=65.80%, avg=2258.80, stdev=780.67, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1212KiB/s (1241kB/s)(5120KiB/4226msec); 0 zone resets clat (msec): min=165, max=567, avg=362.20, stdev=167.25 lat (msec): min=165, max=567, avg=362.30, stdev=167.25 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 493], 80.00th=[ 493], 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= 1756, max= 3750, per=52.14%, avg=2505.67, stdev=1085.14, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=33.33%, 750=16.67% cpu : usr=0.02%, sys=3.03%, ctx=75, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178434: Fri Sep 4 20:20:13 2026 read: IOPS=0, BW=343KiB/s (352kB/s)(2048KiB/5965msec) clat (msec): min=170, max=222, avg=196.24, stdev=36.66 lat (msec): min=170, max=222, avg=196.24, stdev=36.67 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 222], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 222], 95.00th=[ 222], | 99.00th=[ 222], 99.50th=[ 222], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 1848, max= 2011, per=56.20%, avg=1929.50, stdev=115.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1717KiB/s (1758kB/s)(10.0MiB/5965msec); 0 zone resets clat (msec): min=166, max=1393, avg=538.57, stdev=440.08 lat (msec): min=166, max=1393, avg=538.69, stdev=440.10 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 169], | 30.00th=[ 174], 40.00th=[ 215], 50.00th=[ 359], 60.00th=[ 384], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 1167], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1875, max= 4063, per=51.88%, avg=2493.57, stdev=900.01, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 2000=16.67% cpu : usr=0.03%, sys=3.57%, ctx=102, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178435: Fri Sep 4 20:20:13 2026 read: IOPS=1, BW=1143KiB/s (1171kB/s)(6144KiB/5373msec) clat (msec): min=123, max=747, avg=390.45, stdev=259.29 lat (msec): min=123, max=747, avg=390.45, stdev=259.29 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 388], | 70.00th=[ 659], 80.00th=[ 659], 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= 1875, max= 3871, per=70.80%, avg=2430.50, stdev=963.06, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1143KiB/s (1171kB/s)(6144KiB/5373msec); 0 zone resets clat (msec): min=173, max=1376, avg=469.62, stdev=463.37 lat (msec): min=173, max=1376, avg=469.71, stdev=463.37 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 309], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1848, max= 4096, per=59.65%, avg=2866.75, stdev=1110.19, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.04%, sys=2.55%, ctx=78, 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=178436: Fri Sep 4 20:20:13 2026 read: IOPS=1, BW=1097KiB/s (1124kB/s)(5120KiB/4666msec) clat (msec): min=143, max=547, avg=314.28, stdev=159.36 lat (msec): min=143, max=547, avg=314.29, stdev=159.36 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1914, max= 3592, per=73.18%, avg=2512.33, stdev=936.85, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1536KiB/s (1573kB/s)(7168KiB/4666msec); 0 zone resets clat (msec): min=241, max=682, avg=430.43, stdev=193.76 lat (msec): min=241, max=682, avg=430.51, stdev=193.76 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 255], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 393], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1777, max= 2852, per=44.67%, avg=2146.80, stdev=409.77, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=25.00%, 500=50.00%, 750=25.00% cpu : usr=0.00%, sys=2.64%, 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=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=3433KiB/s (3516kB/s), 343KiB/s-1696KiB/s (352kB/s-1737kB/s), io=20.0MiB (20.0MB), run=4226-5965msec WRITE: bw=4807KiB/s (4922kB/s), 1143KiB/s-1717KiB/s (1171kB/s-1758kB/s), io=28.0MiB (29.4MB), run=4226-5965msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178438: Fri Sep 4 20:20:13 2026 read: IOPS=1, BW=1892KiB/s (1938kB/s)(7168KiB/3788msec) clat (msec): min=3, max=450, avg=263.61, stdev=151.46 lat (msec): min=3, max=450, avg=263.61, stdev=151.46 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 174], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 309], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 384], 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= 1950, max= 4047, per=64.10%, avg=2414.00, stdev=913.50, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1352KiB/s (1384kB/s)(5120KiB/3788msec); 0 zone resets clat (msec): min=306, max=531, avg=387.05, stdev=98.60 lat (msec): min=306, max=531, avg=387.15, stdev=98.59 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1825, max= 4087, per=50.17%, avg=2645.00, stdev=1252.73, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 250=16.67%, 500=66.67%, 750=8.33% cpu : usr=0.00%, sys=9.77%, ctx=137, 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=178439: Fri Sep 4 20:20:13 2026 read: IOPS=0, BW=377KiB/s (386kB/s)(2048KiB/5438msec) clat (msec): min=4, max=219, avg=111.91, stdev=152.16 lat (msec): min=4, max=219, avg=111.91, stdev=152.16 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 5], 40.00th=[ 5], 50.00th=[ 5], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 220], 95.00th=[ 220], | 99.00th=[ 220], 99.50th=[ 220], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 1917, max= 2043, per=52.58%, avg=1980.00, stdev=89.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1883KiB/s (1928kB/s)(10.0MiB/5438msec); 0 zone resets clat (msec): min=268, max=973, avg=520.95, stdev=276.35 lat (msec): min=268, max=973, avg=521.26, stdev=276.15 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 317], 50.00th=[ 342], 60.00th=[ 430], | 70.00th=[ 625], 80.00th=[ 844], 90.00th=[ 852], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1825, max= 4087, per=42.66%, avg=2249.25, stdev=746.03, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 10=8.33%, 250=8.33%, 500=50.00%, 750=8.33%, 1000=25.00% cpu : usr=0.04%, sys=9.07%, ctx=130, 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=178440: Fri Sep 4 20:20:13 2026 read: IOPS=1, BW=1207KiB/s (1236kB/s)(6144KiB/5090msec) clat (usec): min=524, max=270264, avg=79404.95, stdev=122154.93 lat (usec): min=526, max=270266, avg=79406.44, stdev=122154.80 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 848], 50.00th=[ 848], 60.00th=[ 5800], | 70.00th=[198181], 80.00th=[198181], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 2048, max= 4087, per=86.61%, avg=3261.67, stdev=1073.54, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1207KiB/s (1236kB/s)(6144KiB/5090msec); 0 zone resets clat (msec): min=363, max=1491, avg=767.68, stdev=393.94 lat (msec): min=363, max=1491, avg=767.75, stdev=393.93 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 693], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1825, max= 2048, per=37.79%, avg=1992.40, stdev=94.27, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 10=8.33%, 250=8.33%, 500=16.67%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.04%, sys=8.37%, ctx=125, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178441: Fri Sep 4 20:20:13 2026 read: IOPS=1, BW=1074KiB/s (1100kB/s)(5120KiB/4768msec) clat (usec): min=435, max=398580, avg=155443.45, stdev=210627.82 lat (usec): min=436, max=398582, avg=155444.68, stdev=210627.86 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], 20.00th=[ 437], | 30.00th=[ 449], 40.00th=[ 449], 50.00th=[ 4424], 60.00th=[ 4424], | 70.00th=[375391], 80.00th=[375391], 90.00th=[400557], 95.00th=[400557], | 99.00th=[400557], 99.50th=[400557], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 7557, max= 7557, per=100.00%, avg=7557.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1503KiB/s (1539kB/s)(7168KiB/4768msec); 0 zone resets clat (msec): min=278, max=1180, avg=568.85, stdev=305.60 lat (msec): min=279, max=1180, avg=568.95, stdev=305.56 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 338], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 485], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1440, max= 4039, per=44.41%, avg=2341.50, stdev=1156.76, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=16.67% lat (msec) : 10=8.33%, 500=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=8.52%, ctx=99, 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=3766KiB/s (3856kB/s), 377KiB/s-1892KiB/s (386kB/s-1938kB/s), io=20.0MiB (20.0MB), run=3788-5438msec WRITE: bw=5273KiB/s (5399kB/s), 1207KiB/s-1883KiB/s (1236kB/s-1928kB/s), io=28.0MiB (29.4MB), run=3788-5438msec 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=178448: Fri Sep 4 20:20:34 2026 read: IOPS=0, BW=1917KiB/s (1963kB/s)(12.0MiB/6410msec) clat (msec): min=569, max=4609, avg=2079.11, stdev=2204.97 lat (msec): min=569, max=4613, avg=2080.54, stdev=2207.43 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 4597], 80.00th=[ 4597], 90.00th=[ 4597], 95.00th=[ 4597], | 99.00th=[ 4597], 99.50th=[ 4597], 99.90th=[ 4597], 99.95th=[ 4597], | 99.99th=[ 4597] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.09%, ctx=67, 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=178449: Fri Sep 4 20:20:34 2026 read: IOPS=0, BW=546KiB/s (559kB/s)(4096KiB/7499msec) clat (nsec): min=4061.5M, max=4061.5M, avg=4061456469.00, stdev= 0.00 lat (nsec): min=4061.5M, max=4061.5M, avg=4061471090.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4077], 5.00th=[ 4077], 10.00th=[ 4077], 20.00th=[ 4077], | 30.00th=[ 4077], 40.00th=[ 4077], 50.00th=[ 4077], 60.00th=[ 4077], | 70.00th=[ 4077], 80.00th=[ 4077], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1092KiB/s (1119kB/s)(8192KiB/7499msec); 0 zone resets clat (msec): min=1236, max=1840, avg=1538.84, stdev=427.26 lat (msec): min=1237, max=1841, avg=1539.43, stdev=427.03 clat percentiles (msec): | 1.00th=[ 1234], 5.00th=[ 1234], 10.00th=[ 1234], 20.00th=[ 1234], | 30.00th=[ 1234], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1838], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=1.71%, ctx=65, 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=178450: Fri Sep 4 20:20:34 2026 write: IOPS=0, BW=2379KiB/s (2436kB/s)(12.0MiB/5165msec); 0 zone resets clat (msec): min=590, max=3248, avg=1562.76, stdev=1465.62 lat (msec): min=595, max=3251, avg=1565.30, stdev=1465.45 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 3239], 80.00th=[ 3239], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 7173, max= 8062, per=100.00%, avg=7617.50, stdev=628.62, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.83%, ctx=50, 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=178451: Fri Sep 4 20:20:34 2026 write: IOPS=0, BW=1808KiB/s (1851kB/s)(12.0MiB/6798msec); 0 zone resets clat (msec): min=261, max=5142, avg=2193.01, stdev=2594.77 lat (msec): min=261, max=5143, avg=2193.77, stdev=2595.12 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 5134], 80.00th=[ 5134], 90.00th=[ 5134], 95.00th=[ 5134], | 99.00th=[ 5134], 99.50th=[ 5134], 99.90th=[ 5134], 99.95th=[ 5134], | 99.99th=[ 5134] bw ( KiB/s): min= 8047, max= 8094, per=100.00%, avg=8070.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.79%, ctx=46, 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=2185KiB/s (2237kB/s), 546KiB/s-1917KiB/s (559kB/s-1963kB/s), io=16.0MiB (16.8MB), run=6410-7499msec WRITE: bw=4370KiB/s (4475kB/s), 1092KiB/s-2379KiB/s (1119kB/s-2436kB/s), io=32.0MiB (33.6MB), run=5165-7499msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178452: Fri Sep 4 20:20:34 2026 read: IOPS=0, BW=1799KiB/s (1842kB/s)(12.0MiB/6830msec) clat (msec): min=1223, max=3744, avg=2228.58, stdev=1335.97 lat (msec): min=1223, max=3744, avg=2228.58, stdev=1335.97 clat percentiles (msec): | 1.00th=[ 1217], 5.00th=[ 1217], 10.00th=[ 1217], 20.00th=[ 1217], | 30.00th=[ 1217], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 3742], 80.00th=[ 3742], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 7613, max= 8031, per=100.00%, avg=7822.00, stdev=295.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.84%, ctx=429, 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=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=178453: Fri Sep 4 20:20:34 2026 read: IOPS=0, BW=532KiB/s (544kB/s)(4096KiB/7704msec) clat (nsec): min=3911.8M, max=3911.8M, avg=3911761886.00, stdev= 0.00 lat (nsec): min=3911.8M, max=3911.8M, avg=3911764616.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3910], 5.00th=[ 3910], 10.00th=[ 3910], 20.00th=[ 3910], | 30.00th=[ 3910], 40.00th=[ 3910], 50.00th=[ 3910], 60.00th=[ 3910], | 70.00th=[ 3910], 80.00th=[ 3910], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 7801, max= 7801, per=100.00%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1063KiB/s (1089kB/s)(8192KiB/7704msec); 0 zone resets clat (msec): min=1014, max=2610, avg=1812.81, stdev=1128.64 lat (msec): min=1041, max=2611, avg=1826.24, stdev=1109.91 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 2601], | 70.00th=[ 2601], 80.00th=[ 2601], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7488, max= 7488, per=100.00%, avg=7488.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.87%, ctx=299, 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=178454: Fri Sep 4 20:20:34 2026 write: IOPS=0, BW=1595KiB/s (1633kB/s)(12.0MiB/7705msec); 0 zone resets clat (msec): min=400, max=5113, avg=2526.53, stdev=2389.94 lat (msec): min=400, max=5116, avg=2528.01, stdev=2391.79 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 2072], 50.00th=[ 2072], 60.00th=[ 2072], | 70.00th=[ 5134], 80.00th=[ 5134], 90.00th=[ 5134], 95.00th=[ 5134], | 99.00th=[ 5134], 99.50th=[ 5134], 99.90th=[ 5134], 99.95th=[ 5134], | 99.99th=[ 5134] bw ( KiB/s): min= 7892, max= 8143, per=100.00%, avg=8017.50, stdev=177.48, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=0.95%, ctx=29, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178455: Fri Sep 4 20:20:34 2026 write: IOPS=0, BW=2070KiB/s (2119kB/s)(12.0MiB/5937msec); 0 zone resets clat (msec): min=392, max=4404, avg=1888.37, stdev=2192.32 lat (msec): min=393, max=4405, avg=1888.87, stdev=2192.22 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 4396], 80.00th=[ 4396], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min=15340, max=15340, per=100.00%, avg=15340.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=1.94%, ctx=51, 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=2127KiB/s (2178kB/s), 532KiB/s-1799KiB/s (544kB/s-1842kB/s), io=16.0MiB (16.8MB), run=6830-7704msec WRITE: bw=4253KiB/s (4355kB/s), 1063KiB/s-2070KiB/s (1089kB/s-2119kB/s), io=32.0MiB (33.6MB), run=5937-7705msec