== sanity test 398b: DIO and buffer IO race ============== 01:22:06 (1786944126) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.87946 s, 13.0 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=147655: Mon Aug 17 01:23:59 2026 read: IOPS=15, BW=61.5KiB/s (62.9kB/s)(5992KiB/97483msec) clat (usec): min=29, max=719087, avg=33055.79, stdev=32533.61 lat (usec): min=29, max=719088, avg=33060.98, stdev=32532.39 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 60], 10.00th=[ 9110], 20.00th=[ 16581], | 30.00th=[ 20841], 40.00th=[ 24249], 50.00th=[ 27657], 60.00th=[ 33162], | 70.00th=[ 39060], 80.00th=[ 47449], 90.00th=[ 58983], 95.00th=[ 69731], | 99.00th=[113771], 99.50th=[130548], 99.90th=[526386], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 128, per=25.28%, avg=61.18, stdev=21.34, samples=191 iops : min= 1, max= 32, avg=14.68, stdev= 5.40, samples=191 write: IOPS=16, BW=64.6KiB/s (66.1kB/s)(6296KiB/97483msec); 0 zone resets clat (usec): min=719, max=374365, avg=30234.73, stdev=29924.96 lat (usec): min=719, max=374366, avg=30237.27, stdev=29924.56 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1352], 10.00th=[ 1680], 20.00th=[ 3884], | 30.00th=[ 7439], 40.00th=[ 15270], 50.00th=[ 23725], 60.00th=[ 31851], | 70.00th=[ 40109], 80.00th=[ 51643], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[123208], 99.50th=[143655], 99.90th=[261096], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 158, per=25.46%, avg=64.40, stdev=23.66, samples=191 iops : min= 1, max= 39, avg=15.49, stdev= 5.92, samples=191 lat (usec) : 50=0.65%, 100=3.29%, 250=0.26%, 500=0.03%, 750=0.13% lat (usec) : 1000=0.36% lat (msec) : 2=5.79%, 4=4.52%, 10=7.19%, 20=14.23%, 50=44.11% lat (msec) : 100=17.61%, 250=1.66%, 500=0.10%, 750=0.07% cpu : usr=0.07%, sys=6.30%, ctx=6607, 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=147656: Mon Aug 17 01:23:59 2026 read: IOPS=14, BW=59.0KiB/s (61.4kB/s)(5940KiB/99068msec) clat (usec): min=30, max=258464, avg=32071.22, stdev=23110.28 lat (usec): min=31, max=258466, avg=32072.97, stdev=23110.31 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 9503], 20.00th=[ 15664], | 30.00th=[ 19530], 40.00th=[ 23462], 50.00th=[ 27919], 60.00th=[ 32375], | 70.00th=[ 38536], 80.00th=[ 46924], 90.00th=[ 58983], 95.00th=[ 71828], | 99.00th=[109577], 99.50th=[139461], 99.90th=[158335], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 6, max= 136, per=24.57%, avg=59.46, stdev=23.73, samples=194 iops : min= 1, max= 34, avg=14.24, stdev= 5.98, samples=194 write: IOPS=16, BW=64.1KiB/s (65.6kB/s)(6348KiB/99068msec); 0 zone resets clat (usec): min=758, max=716114, avg=32159.80, stdev=35625.04 lat (usec): min=759, max=716115, avg=32165.17, stdev=35623.05 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1385], 10.00th=[ 1598], 20.00th=[ 3458], | 30.00th=[ 7242], 40.00th=[ 17171], 50.00th=[ 25297], 60.00th=[ 31851], | 70.00th=[ 41157], 80.00th=[ 54264], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[137364], 99.50th=[166724], 99.90th=[246416], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 16, max= 208, per=24.98%, avg=63.19, stdev=24.79, samples=194 iops : min= 4, max= 52, avg=15.18, stdev= 6.26, samples=194 lat (usec) : 50=0.68%, 100=3.45%, 250=0.20%, 500=0.07%, 1000=0.39% lat (msec) : 2=6.35%, 4=4.69%, 10=6.15%, 20=15.07%, 50=42.64% lat (msec) : 100=17.94%, 250=2.31%, 500=0.03%, 750=0.03% cpu : usr=0.11%, sys=6.26%, ctx=6602, 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=147657: Mon Aug 17 01:23:59 2026 read: IOPS=15, BW=61.6KiB/s (63.1kB/s)(6028KiB/97879msec) clat (usec): min=38, max=337701, avg=32243.59, stdev=24024.30 lat (usec): min=38, max=337702, avg=32252.04, stdev=24028.47 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 10028], 20.00th=[ 16909], | 30.00th=[ 20317], 40.00th=[ 23987], 50.00th=[ 27919], 60.00th=[ 33162], | 70.00th=[ 39060], 80.00th=[ 45876], 90.00th=[ 57410], 95.00th=[ 68682], | 99.00th=[103285], 99.50th=[139461], 99.90th=[219153], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 127, per=25.52%, avg=61.75, stdev=22.79, samples=191 iops : min= 1, max= 31, avg=14.81, stdev= 5.72, samples=191 write: IOPS=15, BW=63.0KiB/s (65.5kB/s)(6260KiB/97879msec); 0 zone resets clat (usec): min=713, max=747550, avg=31236.33, stdev=37250.36 lat (usec): min=713, max=747553, avg=31237.96, stdev=37250.34 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1663], 20.00th=[ 3425], | 30.00th=[ 6521], 40.00th=[ 13698], 50.00th=[ 23462], 60.00th=[ 31851], | 70.00th=[ 41157], 80.00th=[ 53740], 90.00th=[ 70779], 95.00th=[ 88605], | 99.00th=[129500], 99.50th=[147850], 99.90th=[459277], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 127, per=25.16%, avg=63.65, stdev=22.57, samples=192 iops : min= 1, max= 31, avg=15.29, stdev= 5.67, samples=192 lat (usec) : 50=0.65%, 100=3.48%, 250=0.36%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.32%, 4=4.72%, 10=7.23%, 20=14.84%, 50=43.07% lat (msec) : 100=17.06%, 250=1.95%, 500=0.10%, 750=0.03% cpu : usr=0.08%, sys=6.04%, ctx=6462, 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=147658: Mon Aug 17 01:23:59 2026 read: IOPS=15, BW=62.2KiB/s (63.6kB/s)(6052KiB/97367msec) clat (usec): min=34, max=606981, avg=32648.13, stdev=26759.45 lat (usec): min=34, max=606982, avg=32649.43, stdev=26759.39 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 11076], 20.00th=[ 16909], | 30.00th=[ 21103], 40.00th=[ 24511], 50.00th=[ 28443], 60.00th=[ 33162], | 70.00th=[ 39584], 80.00th=[ 46924], 90.00th=[ 58983], 95.00th=[ 68682], | 99.00th=[101188], 99.50th=[120062], 99.90th=[320865], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 6, max= 127, per=25.49%, avg=61.68, stdev=22.39, samples=192 iops : min= 1, max= 31, avg=14.81, stdev= 5.61, samples=192 write: IOPS=16, BW=64.0KiB/s (65.6kB/s)(6236KiB/97367msec); 0 zone resets clat (usec): min=832, max=238535, avg=30553.50, stdev=30104.87 lat (usec): min=834, max=238537, avg=30556.83, stdev=30105.17 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1352], 10.00th=[ 1565], 20.00th=[ 3458], | 30.00th=[ 7242], 40.00th=[ 15401], 50.00th=[ 23200], 60.00th=[ 31065], | 70.00th=[ 40633], 80.00th=[ 52691], 90.00th=[ 70779], 95.00th=[ 88605], | 99.00th=[128451], 99.50th=[149947], 99.90th=[193987], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 16, max= 120, per=25.05%, avg=63.39, stdev=21.64, samples=192 iops : min= 4, max= 30, avg=15.22, stdev= 5.48, samples=192 lat (usec) : 50=0.59%, 100=2.90%, 250=0.29%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.36% lat (msec) : 2=6.28%, 4=4.56%, 10=6.64%, 20=14.52%, 50=44.53% lat (msec) : 100=16.96%, 250=2.15%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.30%, ctx=6599, 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=242KiB/s (248kB/s), 59.0KiB/s-62.2KiB/s (61.4kB/s-63.6kB/s), io=23.4MiB (24.6MB), run=97367-99068msec WRITE: bw=254KiB/s (260kB/s), 63.0KiB/s-64.6KiB/s (65.5kB/s-66.1kB/s), io=24.6MiB (25.7MB), run=97367-99068msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147651: Mon Aug 17 01:25:28 2026 read: IOPS=8, BW=32.0KiB/s (32.8kB/s)(5992KiB/187218msec) clat (msec): min=4, max=750, avg=25.83, stdev=33.56 lat (msec): min=4, max=750, avg=25.83, stdev=33.55 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 34], 90.00th=[ 59], 95.00th=[ 85], | 99.00th=[ 148], 99.50th=[ 178], 99.90th=[ 268], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 112, per=26.52%, avg=33.68, stdev=22.66, samples=347 iops : min= 1, max= 28, avg= 7.81, stdev= 5.72, samples=347 write: IOPS=8, BW=33.6KiB/s (34.4kB/s)(6296KiB/187218msec); 0 zone resets clat (msec): min=27, max=535, avg=94.12, stdev=49.92 lat (msec): min=27, max=535, avg=94.13, stdev=49.92 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 43], 10.00th=[ 48], 20.00th=[ 57], | 30.00th=[ 64], 40.00th=[ 71], 50.00th=[ 80], 60.00th=[ 90], | 70.00th=[ 108], 80.00th=[ 130], 90.00th=[ 161], 95.00th=[ 194], | 99.00th=[ 253], 99.50th=[ 275], 99.90th=[ 485], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7, max= 80, per=25.03%, avg=33.29, stdev=16.71, samples=368 iops : min= 1, max= 20, avg= 7.71, stdev= 4.27, samples=368 lat (msec) : 10=11.75%, 20=19.69%, 50=17.02%, 100=32.88%, 250=17.97% lat (msec) : 500=0.62%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.72%, ctx=5334, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147652: Mon Aug 17 01:25:28 2026 read: IOPS=7, BW=31.5KiB/s (32.3kB/s)(5940KiB/188299msec) clat (msec): min=4, max=611, avg=25.51, stdev=33.07 lat (msec): min=4, max=611, avg=25.51, stdev=33.07 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 34], 90.00th=[ 55], 95.00th=[ 80], | 99.00th=[ 133], 99.50th=[ 197], 99.90th=[ 493], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 135, per=26.64%, avg=33.83, stdev=22.77, samples=342 iops : min= 1, max= 33, avg= 7.84, stdev= 5.76, samples=342 write: IOPS=8, BW=33.7KiB/s (34.5kB/s)(6348KiB/188299msec); 0 zone resets clat (msec): min=24, max=481, avg=94.50, stdev=48.72 lat (msec): min=24, max=481, avg=94.50, stdev=48.72 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 44], 10.00th=[ 50], 20.00th=[ 57], | 30.00th=[ 64], 40.00th=[ 71], 50.00th=[ 79], 60.00th=[ 89], | 70.00th=[ 107], 80.00th=[ 132], 90.00th=[ 165], 95.00th=[ 190], | 99.00th=[ 245], 99.50th=[ 275], 99.90th=[ 414], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 71, per=25.11%, avg=33.40, stdev=16.10, samples=369 iops : min= 1, max= 17, avg= 7.73, stdev= 4.10, samples=369 lat (msec) : 10=10.09%, 20=21.09%, 50=17.45%, 100=33.14%, 250=17.68% lat (msec) : 500=0.52%, 750=0.03% cpu : usr=0.05%, sys=1.67%, ctx=5292, 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=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=147653: Mon Aug 17 01:25:28 2026 read: IOPS=8, BW=32.2KiB/s (32.0kB/s)(6028KiB/187175msec) clat (msec): min=4, max=391, avg=25.88, stdev=28.19 lat (msec): min=4, max=391, avg=25.88, stdev=28.19 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 25], 80.00th=[ 36], 90.00th=[ 62], 95.00th=[ 83], | 99.00th=[ 127], 99.50th=[ 161], 99.90th=[ 279], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 128, per=26.11%, avg=33.16, stdev=22.27, samples=354 iops : min= 1, max= 32, avg= 7.68, stdev= 5.63, samples=354 write: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6260KiB/187175msec); 0 zone resets clat (msec): min=27, max=728, avg=94.42, stdev=51.95 lat (msec): min=27, max=728, avg=94.43, stdev=51.95 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 44], 10.00th=[ 50], 20.00th=[ 57], | 30.00th=[ 63], 40.00th=[ 70], 50.00th=[ 78], 60.00th=[ 90], | 70.00th=[ 108], 80.00th=[ 130], 90.00th=[ 163], 95.00th=[ 190], | 99.00th=[ 255], 99.50th=[ 275], 99.90th=[ 535], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 72, per=24.90%, avg=33.12, stdev=16.66, samples=368 iops : min= 1, max= 18, avg= 7.66, stdev= 4.25, samples=368 lat (msec) : 10=10.42%, 20=20.61%, 50=17.48%, 100=33.59%, 250=17.25% lat (msec) : 500=0.59%, 750=0.07% cpu : usr=0.04%, sys=1.73%, ctx=5390, 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=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=147654: Mon Aug 17 01:25:28 2026 read: IOPS=8, BW=32.2KiB/s (32.0kB/s)(6052KiB/187964msec) clat (msec): min=4, max=358, avg=25.30, stdev=27.42 lat (msec): min=4, max=358, avg=25.30, stdev=27.42 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 36], 90.00th=[ 60], 95.00th=[ 80], | 99.00th=[ 133], 99.50th=[ 169], 99.90th=[ 243], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 111, per=26.56%, avg=33.72, stdev=23.11, samples=349 iops : min= 1, max= 27, avg= 7.83, stdev= 5.85, samples=349 write: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6236KiB/187964msec); 0 zone resets clat (msec): min=25, max=823, avg=95.76, stdev=51.61 lat (msec): min=25, max=823, avg=95.76, stdev=51.61 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 44], 10.00th=[ 49], 20.00th=[ 57], | 30.00th=[ 65], 40.00th=[ 72], 50.00th=[ 81], 60.00th=[ 92], | 70.00th=[ 108], 80.00th=[ 130], 90.00th=[ 167], 95.00th=[ 192], | 99.00th=[ 257], 99.50th=[ 296], 99.90th=[ 363], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 72, per=24.59%, avg=32.70, stdev=16.18, samples=370 iops : min= 1, max= 18, avg= 7.56, stdev= 4.14, samples=370 lat (msec) : 10=11.46%, 20=20.57%, 50=16.76%, 100=32.88%, 250=17.61% lat (msec) : 500=0.68%, 1000=0.03% cpu : usr=0.05%, sys=1.71%, ctx=5295, 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=128KiB/s (131kB/s), 31.5KiB/s-32.2KiB/s (32.3kB/s-32.0kB/s), io=23.4MiB (24.6MB), run=187175-188299msec WRITE: bw=134KiB/s (137kB/s), 33.2KiB/s-33.7KiB/s (33.0kB/s-34.5kB/s), io=24.6MiB (25.7MB), run=187175-188299msec 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=147704: Mon Aug 17 01:25:58 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(5920KiB/22663msec) clat (usec): min=25, max=272420, avg=30704.73, stdev=27027.00 lat (usec): min=25, max=272421, avg=30708.56, stdev=27025.88 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 100], | 30.00th=[ 18482], 40.00th=[ 23462], 50.00th=[ 29754], 60.00th=[ 34866], | 70.00th=[ 41681], 80.00th=[ 47973], 90.00th=[ 57410], 95.00th=[ 70779], | 99.00th=[102237], 99.50th=[168821], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 95, max= 477, per=24.34%, avg=257.07, stdev=92.36, samples=44 iops : min= 5, max= 29, avg=15.34, stdev= 5.78, samples=44 write: IOPS=17, BW=281KiB/s (288kB/s)(6368KiB/22663msec); 0 zone resets clat (usec): min=1588, max=150006, avg=27943.84, stdev=27245.64 lat (usec): min=1589, max=150009, avg=27950.16, stdev=27252.20 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2114], 10.00th=[ 2474], 20.00th=[ 4490], | 30.00th=[ 6980], 40.00th=[ 11600], 50.00th=[ 19268], 60.00th=[ 28443], | 70.00th=[ 36963], 80.00th=[ 50070], 90.00th=[ 65274], 95.00th=[ 82314], | 99.00th=[119014], 99.50th=[143655], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 62, max= 574, per=25.15%, avg=279.45, stdev=109.00, samples=44 iops : min= 3, max= 35, avg=16.77, stdev= 6.88, samples=44 lat (usec) : 50=1.69%, 100=7.94%, 250=0.65%, 500=0.26%, 750=0.13% lat (msec) : 2=2.34%, 4=6.90%, 10=10.81%, 20=10.42%, 50=39.71% lat (msec) : 100=17.45%, 250=1.56%, 500=0.13% cpu : usr=0.09%, sys=7.68%, ctx=1530, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147705: Mon Aug 17 01:25:58 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(5744KiB/22134msec) clat (usec): min=37, max=154406, avg=31593.65, stdev=24976.81 lat (usec): min=38, max=154407, avg=31595.04, stdev=24976.85 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 68], 20.00th=[ 155], | 30.00th=[ 19268], 40.00th=[ 24773], 50.00th=[ 30016], 60.00th=[ 34866], | 70.00th=[ 40633], 80.00th=[ 50594], 90.00th=[ 63701], 95.00th=[ 73925], | 99.00th=[109577], 99.50th=[143655], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 58, max= 479, per=25.12%, avg=265.26, stdev=93.32, samples=42 iops : min= 3, max= 29, avg=15.86, stdev= 5.86, samples=42 write: IOPS=18, BW=296KiB/s (303kB/s)(6544KiB/22134msec); 0 zone resets clat (usec): min=1415, max=257358, avg=26179.07, stdev=30494.12 lat (usec): min=1416, max=257363, avg=26185.00, stdev=30497.19 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2147], 10.00th=[ 2704], 20.00th=[ 4686], | 30.00th=[ 6783], 40.00th=[ 10159], 50.00th=[ 14484], 60.00th=[ 21103], | 70.00th=[ 29754], 80.00th=[ 43779], 90.00th=[ 65274], 95.00th=[ 82314], | 99.00th=[129500], 99.50th=[170918], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 145, max= 572, per=26.53%, avg=294.77, stdev=97.14, samples=43 iops : min= 9, max= 35, avg=17.74, stdev= 6.06, samples=43 lat (usec) : 50=1.17%, 100=7.42%, 250=1.17% lat (msec) : 2=2.08%, 4=7.42%, 10=11.72%, 20=14.84%, 50=35.29% lat (msec) : 100=16.67%, 250=2.08%, 500=0.13% cpu : usr=0.11%, sys=7.84%, ctx=1519, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147706: Mon Aug 17 01:25:58 2026 read: IOPS=17, BW=282KiB/s (289kB/s)(6256KiB/22160msec) clat (usec): min=38, max=169443, avg=30022.23, stdev=24128.81 lat (usec): min=38, max=169444, avg=30024.91, stdev=24130.02 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 96], | 30.00th=[ 16909], 40.00th=[ 26346], 50.00th=[ 30540], 60.00th=[ 34866], | 70.00th=[ 39584], 80.00th=[ 46400], 90.00th=[ 61080], 95.00th=[ 72877], | 99.00th=[ 94897], 99.50th=[127402], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 58, max= 603, per=26.61%, avg=281.02, stdev=103.81, samples=43 iops : min= 3, max= 37, avg=16.86, stdev= 6.54, samples=43 write: IOPS=17, BW=272KiB/s (279kB/s)(6032KiB/22160msec); 0 zone resets clat (usec): min=1313, max=175101, avg=26783.35, stdev=26834.74 lat (usec): min=1315, max=175103, avg=26785.90, stdev=26834.69 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2040], 10.00th=[ 2835], 20.00th=[ 5211], | 30.00th=[ 7111], 40.00th=[ 10945], 50.00th=[ 16909], 60.00th=[ 26084], | 70.00th=[ 35390], 80.00th=[ 47973], 90.00th=[ 62129], 95.00th=[ 79168], | 99.00th=[126354], 99.50th=[158335], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 87, max= 504, per=24.02%, avg=266.91, stdev=104.29, samples=43 iops : min= 5, max= 31, avg=15.98, stdev= 6.55, samples=43 lat (usec) : 50=1.69%, 100=8.59%, 250=1.69%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.21%, 4=5.47%, 10=11.33%, 20=10.68%, 50=41.02% lat (msec) : 100=15.89%, 250=0.91% cpu : usr=0.09%, sys=7.42%, ctx=1511, 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=147707: Mon Aug 17 01:25:58 2026 read: IOPS=16, BW=266KiB/s (273kB/s)(6032KiB/22666msec) clat (usec): min=20, max=181978, avg=31019.02, stdev=26661.75 lat (usec): min=20, max=181980, avg=31020.46, stdev=26661.82 clat percentiles (usec): | 1.00th=[ 35], 5.00th=[ 59], 10.00th=[ 65], 20.00th=[ 90], | 30.00th=[ 16712], 40.00th=[ 24773], 50.00th=[ 30802], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 47449], 90.00th=[ 61080], 95.00th=[ 73925], | 99.00th=[135267], 99.50th=[154141], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 29, max= 479, per=24.54%, avg=259.11, stdev=95.85, samples=44 iops : min= 1, max= 29, avg=15.45, stdev= 6.04, samples=44 write: IOPS=17, BW=276KiB/s (283kB/s)(6256KiB/22666msec); 0 zone resets clat (usec): min=985, max=216074, avg=27435.76, stdev=29053.73 lat (usec): min=986, max=216077, avg=27438.12, stdev=29053.78 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1958], 10.00th=[ 2671], 20.00th=[ 4817], | 30.00th=[ 7046], 40.00th=[ 11994], 50.00th=[ 17957], 60.00th=[ 25560], | 70.00th=[ 33817], 80.00th=[ 47449], 90.00th=[ 64750], 95.00th=[ 81265], | 99.00th=[141558], 99.50th=[187696], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 61, max= 504, per=24.40%, avg=271.05, stdev=102.29, samples=44 iops : min= 3, max= 31, avg=16.23, stdev= 6.46, samples=44 lat (usec) : 50=1.04%, 100=9.64%, 250=1.30%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=3.12%, 4=5.73%, 10=9.77%, 20=11.98%, 50=37.89% lat (msec) : 100=16.80%, 250=1.82% cpu : usr=0.12%, sys=7.36%, ctx=1481, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1057KiB/s (1082kB/s), 260KiB/s-282KiB/s (266kB/s-289kB/s), io=23.4MiB (24.5MB), run=22134-22666msec WRITE: bw=1112KiB/s (1138kB/s), 272KiB/s-296KiB/s (279kB/s-303kB/s), io=24.6MiB (25.8MB), run=22134-22666msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147700: Mon Aug 17 01:26:25 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(5920KiB/49875msec) clat (msec): min=5, max=191, avg=31.84, stdev=30.24 lat (msec): min=5, max=191, avg=31.84, stdev=30.24 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 68], 95.00th=[ 108], | 99.00th=[ 153], 99.50th=[ 165], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 31, max= 403, per=25.60%, avg=122.12, stdev=73.33, samples=94 iops : min= 1, max= 25, avg= 6.89, stdev= 4.69, samples=94 write: IOPS=7, BW=128KiB/s (131kB/s)(6368KiB/49875msec); 0 zone resets clat (msec): min=36, max=329, avg=95.08, stdev=45.19 lat (msec): min=36, max=329, avg=95.08, stdev=45.19 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 50], 10.00th=[ 54], 20.00th=[ 61], | 30.00th=[ 67], 40.00th=[ 73], 50.00th=[ 84], 60.00th=[ 93], | 70.00th=[ 104], 80.00th=[ 121], 90.00th=[ 159], 95.00th=[ 192], | 99.00th=[ 245], 99.50th=[ 284], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 27, max= 256, per=25.57%, avg=128.08, stdev=58.42, samples=97 iops : min= 1, max= 16, avg= 7.27, stdev= 3.75, samples=97 lat (msec) : 10=5.34%, 20=16.93%, 50=21.61%, 100=36.85%, 250=18.88% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.98%, ctx=1496, 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=147701: Mon Aug 17 01:26:25 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(5744KiB/50208msec) clat (msec): min=5, max=149, avg=29.53, stdev=24.28 lat (msec): min=5, max=149, avg=29.53, stdev=24.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 67], 95.00th=[ 83], | 99.00th=[ 124], 99.50th=[ 144], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 27, max= 414, per=25.66%, avg=122.38, stdev=78.90, samples=92 iops : min= 1, max= 25, avg= 6.92, stdev= 4.97, samples=92 write: IOPS=8, BW=130KiB/s (133kB/s)(6544KiB/50208msec); 0 zone resets clat (msec): min=31, max=363, avg=96.71, stdev=50.56 lat (msec): min=31, max=363, avg=96.72, stdev=50.56 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 44], 10.00th=[ 51], 20.00th=[ 61], | 30.00th=[ 67], 40.00th=[ 74], 50.00th=[ 83], 60.00th=[ 93], | 70.00th=[ 105], 80.00th=[ 128], 90.00th=[ 159], 95.00th=[ 190], | 99.00th=[ 296], 99.50th=[ 321], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 31, max= 256, per=25.79%, avg=129.19, stdev=57.64, samples=99 iops : min= 1, max= 16, avg= 7.34, stdev= 3.71, samples=99 lat (msec) : 10=4.56%, 20=16.41%, 50=24.35%, 100=35.55%, 250=18.36% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.94%, ctx=1436, 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=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=147702: Mon Aug 17 01:26:25 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47938msec) clat (msec): min=6, max=200, avg=27.69, stdev=25.83 lat (msec): min=6, max=200, avg=27.69, stdev=25.83 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 39], 90.00th=[ 51], 95.00th=[ 75], | 99.00th=[ 142], 99.50th=[ 161], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 27, max= 510, per=28.24%, avg=134.68, stdev=96.44, samples=92 iops : min= 1, max= 31, avg= 7.67, stdev= 6.05, samples=92 write: IOPS=7, BW=126KiB/s (129kB/s)(6032KiB/47938msec); 0 zone resets clat (msec): min=21, max=328, avg=97.99, stdev=48.17 lat (msec): min=21, max=328, avg=98.01, stdev=48.17 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 47], 10.00th=[ 53], 20.00th=[ 63], | 30.00th=[ 70], 40.00th=[ 77], 50.00th=[ 83], 60.00th=[ 94], | 70.00th=[ 105], 80.00th=[ 130], 90.00th=[ 169], 95.00th=[ 205], | 99.00th=[ 275], 99.50th=[ 279], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 224, per=25.03%, avg=125.38, stdev=54.09, samples=95 iops : min= 1, max= 14, avg= 7.09, stdev= 3.50, samples=95 lat (msec) : 10=6.12%, 20=20.57%, 50=22.66%, 100=31.90%, 250=17.97% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.96%, ctx=1459, 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=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=147703: Mon Aug 17 01:26:25 2026 read: IOPS=7, BW=124KiB/s (127kB/s)(6032KiB/48692msec) clat (msec): min=6, max=232, avg=30.45, stdev=29.50 lat (msec): min=6, max=232, avg=30.45, stdev=29.50 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 40], 90.00th=[ 62], 95.00th=[ 93], | 99.00th=[ 153], 99.50th=[ 163], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 351, per=27.37%, avg=130.54, stdev=77.21, samples=90 iops : min= 1, max= 21, avg= 7.43, stdev= 4.87, samples=90 write: IOPS=8, BW=128KiB/s (132kB/s)(6256KiB/48692msec); 0 zone resets clat (msec): min=25, max=323, avg=94.86, stdev=47.34 lat (msec): min=25, max=323, avg=94.87, stdev=47.36 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 44], 10.00th=[ 52], 20.00th=[ 60], | 30.00th=[ 67], 40.00th=[ 73], 50.00th=[ 81], 60.00th=[ 90], | 70.00th=[ 107], 80.00th=[ 126], 90.00th=[ 157], 95.00th=[ 192], | 99.00th=[ 251], 99.50th=[ 288], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 256, per=25.55%, avg=128.01, stdev=59.97, samples=96 iops : min= 1, max= 16, avg= 7.25, stdev= 3.86, samples=96 lat (msec) : 10=5.47%, 20=17.97%, 50=23.31%, 100=34.11%, 250=18.62% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.99%, ctx=1445, 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=477KiB/s (489kB/s), 114KiB/s-131KiB/s (117kB/s-134kB/s), io=23.4MiB (24.5MB), run=47938-50208msec WRITE: bw=502KiB/s (514kB/s), 126KiB/s-130KiB/s (129kB/s-133kB/s), io=24.6MiB (25.8MB), run=47938-50208msec 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=147724: Mon Aug 17 01:26:36 2026 read: IOPS=2, BW=2231KiB/s (2284kB/s)(7168KiB/3213msec) clat (usec): min=450, max=235048, avg=149853.95, stdev=103023.93 lat (usec): min=451, max=235049, avg=149855.27, stdev=103023.84 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], 20.00th=[ 515], | 30.00th=[187696], 40.00th=[187696], 50.00th=[204473], 60.00th=[208667], | 70.00th=[208667], 80.00th=[212861], 90.00th=[235930], 95.00th=[235930], | 99.00th=[235930], 99.50th=[235930], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 2039, max= 4770, per=65.41%, avg=3635.00, stdev=1422.67, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1594KiB/s (1632kB/s)(5120KiB/3213msec); 0 zone resets clat (msec): min=132, max=1205, avg=432.24, stdev=450.86 lat (msec): min=132, max=1205, avg=432.62, stdev=450.69 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 2039, max= 3984, per=34.58%, avg=2690.33, stdev=1120.36, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=66.67%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=15.50%, ctx=333, 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=147725: Mon Aug 17 01:26:36 2026 read: IOPS=0, BW=556KiB/s (569kB/s)(2048KiB/3685msec) clat (msec): min=223, max=346, avg=285.13, stdev=86.77 lat (msec): min=223, max=346, avg=285.13, stdev=86.77 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1481, max= 2039, per=31.67%, avg=1760.00, stdev=394.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2779KiB/s (2846kB/s)(10.0MiB/3685msec); 0 zone resets clat (msec): min=127, max=1097, avg=311.21, stdev=290.11 lat (msec): min=127, max=1097, avg=311.33, stdev=290.09 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 133], | 30.00th=[ 136], 40.00th=[ 138], 50.00th=[ 243], 60.00th=[ 253], | 70.00th=[ 300], 80.00th=[ 309], 90.00th=[ 376], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1992, max= 4096, per=33.67%, avg=2619.40, stdev=922.49, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=12.62%, ctx=202, 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=147726: Mon Aug 17 01:26:36 2026 read: IOPS=2, BW=2472KiB/s (2532kB/s)(6144KiB/2485msec) clat (usec): min=416, max=243952, avg=122070.70, stdev=108736.89 lat (usec): min=417, max=243953, avg=122071.96, stdev=108736.86 clat percentiles (usec): | 1.00th=[ 416], 5.00th=[ 416], 10.00th=[ 416], 20.00th=[ 3916], | 30.00th=[ 3916], 40.00th=[ 78119], 50.00th=[ 78119], 60.00th=[185598], | 70.00th=[219153], 80.00th=[219153], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 2039, max= 4096, per=60.70%, avg=3373.00, stdev=1156.63, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2472KiB/s (2532kB/s)(6144KiB/2485msec); 0 zone resets clat (msec): min=145, max=489, avg=291.75, stdev=125.89 lat (msec): min=145, max=489, avg=291.88, stdev=125.97 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 342], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 1992, max= 2917, per=28.91%, avg=2249.00, stdev=446.01, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=50.00%, 500=25.00% cpu : usr=0.04%, sys=16.38%, ctx=186, 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=147727: Mon Aug 17 01:26:36 2026 read: IOPS=1, BW=1423KiB/s (1458kB/s)(5120KiB/3597msec) clat (usec): min=406, max=1127.2k, avg=226066.45, stdev=503730.82 lat (usec): min=406, max=1127.2k, avg=226067.34, stdev=503730.57 clat percentiles (usec): | 1.00th=[ 408], 5.00th=[ 408], 10.00th=[ 408], | 20.00th=[ 408], 30.00th=[ 490], 40.00th=[ 490], | 50.00th=[ 660], 60.00th=[ 660], 70.00th=[ 1614], | 80.00th=[ 1614], 90.00th=[1132463], 95.00th=[1132463], | 99.00th=[1132463], 99.50th=[1132463], 99.90th=[1132463], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 2039, max= 6131, per=73.51%, avg=4085.00, stdev=2893.48, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1993KiB/s (2041kB/s)(7168KiB/3597msec); 0 zone resets clat (msec): min=92, max=776, avg=351.98, stdev=280.81 lat (msec): min=92, max=776, avg=352.17, stdev=280.86 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 105], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 300], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 667], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1587, max= 4079, per=31.35%, avg=2439.25, stdev=1114.33, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=16.67%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.62%, ctx=323, 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=5558KiB/s (5691kB/s), 556KiB/s-2472KiB/s (569kB/s-2532kB/s), io=20.0MiB (20.0MB), run=2485-3685msec WRITE: bw=7781KiB/s (7967kB/s), 1594KiB/s-2779KiB/s (1632kB/s-2846kB/s), io=28.0MiB (29.4MB), run=2485-3685msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147719: Mon Aug 17 01:26:36 2026 read: IOPS=2, BW=2070KiB/s (2120kB/s)(7168KiB/3462msec) clat (msec): min=30, max=381, avg=126.91, stdev=131.65 lat (msec): min=30, max=381, avg=126.91, stdev=131.65 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 31], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 56], 40.00th=[ 56], 50.00th=[ 68], 60.00th=[ 82], | 70.00th=[ 82], 80.00th=[ 234], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 1812, max= 7757, per=73.31%, avg=3856.33, stdev=3379.38, samples=3 iops : min= 1, max= 7, avg= 3.00, stdev= 3.46, samples=3 write: IOPS=1, BW=1479KiB/s (1514kB/s)(5120KiB/3462msec); 0 zone resets clat (msec): min=118, max=1279, avg=507.36, stdev=455.00 lat (msec): min=118, max=1279, avg=507.66, stdev=454.92 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 1939, max= 3771, per=35.09%, avg=2584.33, stdev=1029.00, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=16.67%, 100=25.00%, 250=25.00%, 500=25.00%, 2000=8.33% cpu : usr=0.06%, sys=4.57%, ctx=69, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147720: Mon Aug 17 01:26:36 2026 read: IOPS=0, BW=526KiB/s (539kB/s)(2048KiB/3893msec) clat (msec): min=66, max=374, avg=220.75, stdev=217.65 lat (msec): min=66, max=374, avg=220.75, stdev=217.65 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 67], 40.00th=[ 67], 50.00th=[ 67], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1969, max= 2043, per=38.14%, avg=2006.00, stdev=52.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2630KiB/s (2693kB/s)(10.0MiB/3893msec); 0 zone resets clat (msec): min=130, max=1015, avg=338.29, stdev=284.23 lat (msec): min=130, max=1016, avg=338.37, stdev=284.23 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 142], | 30.00th=[ 148], 40.00th=[ 174], 50.00th=[ 213], 60.00th=[ 218], | 70.00th=[ 292], 80.00th=[ 430], 90.00th=[ 625], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1885, max= 3938, per=35.08%, avg=2583.50, stdev=934.41, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.21%, ctx=75, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147721: Mon Aug 17 01:26:36 2026 read: IOPS=1, BW=1830KiB/s (1874kB/s)(6144KiB/3358msec) clat (msec): min=88, max=945, avg=337.93, stdev=310.45 lat (msec): min=88, max=945, avg=337.93, stdev=310.45 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 271], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 2043, max= 3771, per=59.81%, avg=3146.00, stdev=958.05, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1830KiB/s (1874kB/s)(6144KiB/3358msec); 0 zone resets clat (msec): min=143, max=351, avg=209.07, stdev=76.01 lat (msec): min=143, max=352, avg=209.21, stdev=76.02 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 178], | 70.00th=[ 234], 80.00th=[ 234], 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= 1812, max= 4015, per=31.92%, avg=2351.00, stdev=934.70, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=3.63%, ctx=70, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147722: Mon Aug 17 01:26:36 2026 read: IOPS=1, BW=1413KiB/s (1447kB/s)(5120KiB/3624msec) clat (msec): min=57, max=414, avg=166.99, stdev=145.22 lat (msec): min=57, max=414, avg=166.99, stdev=145.22 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 66], 40.00th=[ 66], 50.00th=[ 140], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 3599, max= 3806, per=70.39%, avg=3702.50, stdev=146.37, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1978KiB/s (2025kB/s)(7168KiB/3624msec); 0 zone resets clat (msec): min=129, max=1049, avg=393.09, stdev=341.14 lat (msec): min=129, max=1049, avg=393.22, stdev=341.12 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 144], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 192], 60.00th=[ 477], | 70.00th=[ 477], 80.00th=[ 592], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1799, max= 4140, per=36.00%, avg=2651.33, stdev=1293.74, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.84%, ctx=58, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5261KiB/s (5387kB/s), 526KiB/s-2070KiB/s (539kB/s-2120kB/s), io=20.0MiB (20.0MB), run=3358-3893msec WRITE: bw=7365KiB/s (7542kB/s), 1479KiB/s-2630KiB/s (1514kB/s-2693kB/s), io=28.0MiB (29.4MB), run=3358-3893msec 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=147738: Mon Aug 17 01:26:45 2026 read: IOPS=1, BW=6923KiB/s (7089kB/s)(12.0MiB/1775msec) clat (msec): min=498, max=626, avg=565.43, stdev=63.98 lat (msec): min=498, max=626, avg=565.43, stdev=63.98 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8143, max= 8159, per=97.51%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=20.07%, ctx=424, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147739: Mon Aug 17 01:26:45 2026 read: IOPS=0, BW=2090KiB/s (2140kB/s)(4096KiB/1960msec) clat (nsec): min=423880k, max=423880k, avg=423880154.00, stdev= 0.00 lat (nsec): min=423883k, max=423883k, avg=423883078.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 5618, max= 5618, per=67.21%, avg=5618.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4180KiB/s (4280kB/s)(8192KiB/1960msec); 0 zone resets clat (msec): min=357, max=1066, avg=712.18, stdev=501.52 lat (msec): min=358, max=1067, avg=712.67, stdev=501.37 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 359], 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= 8126, max= 8126, per=60.61%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.74%, ctx=255, 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=147740: Mon Aug 17 01:26:45 2026 write: IOPS=1, BW=5028KiB/s (5148kB/s)(12.0MiB/2444msec); 0 zone resets clat (msec): min=201, max=1326, avg=791.71, stdev=564.55 lat (msec): min=205, max=1326, avg=793.13, stdev=562.80 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8175, max= 8175, per=60.98%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.30%, ctx=52, 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=147741: Mon Aug 17 01:26:45 2026 write: IOPS=1, BW=5874KiB/s (6015kB/s)(12.0MiB/2092msec); 0 zone resets clat (msec): min=544, max=789, avg=665.61, stdev=122.50 lat (msec): min=545, max=790, avg=666.31, stdev=122.19 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8143, max= 8159, per=60.80%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=8.08%, ctx=82, 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=8359KiB/s (8560kB/s), 2090KiB/s-6923KiB/s (2140kB/s-7089kB/s), io=16.0MiB (16.8MB), run=1775-1960msec WRITE: bw=13.1MiB/s (13.7MB/s), 4180KiB/s-5874KiB/s (4280kB/s-6015kB/s), io=32.0MiB (33.6MB), run=1960-2444msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147734: Mon Aug 17 01:26:46 2026 read: IOPS=1, BW=6417KiB/s (6571kB/s)(12.0MiB/1915msec) clat (msec): min=208, max=975, avg=595.68, stdev=383.49 lat (msec): min=208, max=975, avg=595.69, stdev=383.49 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, 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%, 1000=33.33% cpu : usr=0.00%, sys=6.01%, ctx=58, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=147735: Mon Aug 17 01:26:46 2026 read: IOPS=0, BW=1812KiB/s (1856kB/s)(4096KiB/2260msec) clat (nsec): min=808777k, max=808777k, avg=808776673.00, stdev= 0.00 lat (nsec): min=808779k, max=808779k, avg=808778528.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3625KiB/s (3712kB/s)(8192KiB/2260msec); 0 zone resets clat (msec): min=388, max=877, avg=632.82, stdev=346.22 lat (msec): min=388, max=878, avg=633.21, stdev=346.20 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8192, max= 8192, per=69.78%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.84%, ctx=50, 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=147736: Mon Aug 17 01:26:46 2026 write: IOPS=1, BW=4403KiB/s (4508kB/s)(12.0MiB/2791msec); 0 zone resets clat (msec): min=202, max=1846, avg=857.21, stdev=871.65 lat (msec): min=203, max=1846, avg=857.57, stdev=871.53 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8192, max= 8192, per=69.78%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.41%, ctx=48, 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=147737: Mon Aug 17 01:26:46 2026 write: IOPS=1, BW=7310KiB/s (7485kB/s)(12.0MiB/1681msec); 0 zone resets clat (msec): min=253, max=958, avg=516.44, stdev=384.97 lat (msec): min=254, max=960, avg=517.48, stdev=386.21 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 6068, max= 8175, per=60.66%, avg=7121.50, stdev=1489.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.31%, ctx=54, 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=7250KiB/s (7424kB/s), 1812KiB/s-6417KiB/s (1856kB/s-6571kB/s), io=16.0MiB (16.8MB), run=1915-2260msec WRITE: bw=11.5MiB/s (12.0MB/s), 3625KiB/s-7310KiB/s (3712kB/s-7485kB/s), io=32.0MiB (33.6MB), run=1681-2791msec