== sanity test 398b: DIO and buffer IO race ============== 22:33:38 (1788921218) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.93225 s, 12.8 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=187564: Tue Sep 8 22:35:34 2026 read: IOPS=14, BW=59.7KiB/s (61.2kB/s)(5992KiB/100324msec) clat (usec): min=40, max=667893, avg=36601.76, stdev=28224.48 lat (usec): min=41, max=667894, avg=36606.63, stdev=28225.73 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 103], 10.00th=[ 14353], 20.00th=[ 18482], | 30.00th=[ 22414], 40.00th=[ 26608], 50.00th=[ 31065], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 52167], 90.00th=[ 66323], 95.00th=[ 79168], | 99.00th=[113771], 99.50th=[123208], 99.90th=[181404], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 7, max= 118, per=25.24%, avg=59.06, stdev=20.71, samples=198 iops : min= 1, max= 29, avg=14.10, stdev= 5.19, samples=198 write: IOPS=15, BW=62.8KiB/s (64.3kB/s)(6296KiB/100324msec); 0 zone resets clat (usec): min=818, max=205899, avg=28668.45, stdev=29430.16 lat (usec): min=819, max=205901, avg=28670.98, stdev=29430.62 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1696], 20.00th=[ 3326], | 30.00th=[ 6259], 40.00th=[ 12780], 50.00th=[ 21103], 60.00th=[ 28443], | 70.00th=[ 36439], 80.00th=[ 48497], 90.00th=[ 67634], 95.00th=[ 85459], | 99.00th=[132645], 99.50th=[154141], 99.90th=[189793], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 7, max= 175, per=25.50%, avg=62.48, stdev=23.77, samples=197 iops : min= 1, max= 43, avg=14.95, stdev= 5.98, samples=197 lat (usec) : 50=0.39%, 100=1.99%, 250=0.23%, 500=0.03%, 1000=0.13% lat (msec) : 2=6.38%, 4=5.11%, 10=7.52%, 20=14.78%, 50=42.48% lat (msec) : 100=18.59%, 250=2.34%, 750=0.03% cpu : usr=0.08%, sys=6.47%, ctx=6656, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187566: Tue Sep 8 22:35:34 2026 read: IOPS=14, BW=58.8KiB/s (60.2kB/s)(5940KiB/100986msec) clat (usec): min=34, max=208953, avg=37885.40, stdev=25254.70 lat (usec): min=34, max=208955, avg=37888.12, stdev=25254.85 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 1401], 10.00th=[ 14091], 20.00th=[ 19792], | 30.00th=[ 23987], 40.00th=[ 28181], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[135267], 99.50th=[149947], 99.90th=[206570], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 7, max= 110, per=24.88%, avg=58.21, stdev=19.35, samples=200 iops : min= 1, max= 27, avg=13.88, stdev= 4.88, samples=200 write: IOPS=15, BW=62.9KiB/s (64.4kB/s)(6348KiB/100986msec); 0 zone resets clat (usec): min=1005, max=655830, avg=27975.54, stdev=32393.99 lat (usec): min=1006, max=655832, avg=27979.62, stdev=32396.42 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1352], 10.00th=[ 1762], 20.00th=[ 3294], | 30.00th=[ 5604], 40.00th=[ 12387], 50.00th=[ 20317], 60.00th=[ 27395], | 70.00th=[ 35390], 80.00th=[ 47973], 90.00th=[ 66847], 95.00th=[ 83362], | 99.00th=[114820], 99.50th=[137364], 99.90th=[265290], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 151, per=25.48%, avg=62.43, stdev=24.95, samples=199 iops : min= 1, max= 37, avg=14.94, stdev= 6.26, samples=199 lat (usec) : 50=0.42%, 100=1.63%, 250=0.26%, 500=0.07%, 750=0.03% lat (msec) : 2=6.45%, 4=5.79%, 10=7.85%, 20=12.89%, 50=43.62% lat (msec) : 100=18.59%, 250=2.34%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.46%, ctx=6621, 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=187567: Tue Sep 8 22:35:34 2026 read: IOPS=14, BW=58.9KiB/s (60.4kB/s)(6028KiB/102277msec) clat (usec): min=22, max=185763, avg=36779.09, stdev=23312.27 lat (usec): min=22, max=185766, avg=36780.78, stdev=23313.14 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 2737], 10.00th=[ 14222], 20.00th=[ 19006], | 30.00th=[ 22414], 40.00th=[ 26608], 50.00th=[ 32113], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 53740], 90.00th=[ 65274], 95.00th=[ 78119], | 99.00th=[116917], 99.50th=[135267], 99.90th=[154141], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 7, max= 166, per=24.98%, avg=58.45, stdev=22.67, samples=201 iops : min= 1, max= 41, avg=13.94, stdev= 5.70, samples=201 write: IOPS=15, BW=61.2KiB/s (62.7kB/s)(6260KiB/102277msec); 0 zone resets clat (usec): min=782, max=724845, avg=29726.03, stdev=34423.07 lat (usec): min=783, max=724847, avg=29729.75, stdev=34422.47 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1369], 10.00th=[ 1811], 20.00th=[ 3458], | 30.00th=[ 6128], 40.00th=[ 13566], 50.00th=[ 21365], 60.00th=[ 28705], | 70.00th=[ 38536], 80.00th=[ 51643], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[121111], 99.50th=[149947], 99.90th=[193987], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 182, per=24.75%, avg=60.63, stdev=24.90, samples=201 iops : min= 1, max= 45, avg=14.49, stdev= 6.25, samples=201 lat (usec) : 50=0.59%, 100=1.63%, 250=0.10%, 500=0.03%, 1000=0.10% lat (msec) : 2=5.92%, 4=5.57%, 10=7.03%, 20=15.30%, 50=41.34% lat (msec) : 100=19.86%, 250=2.51%, 750=0.03% cpu : usr=0.10%, sys=6.32%, ctx=6662, 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=187568: Tue Sep 8 22:35:34 2026 read: IOPS=15, BW=60.2KiB/s (61.7kB/s)(6052KiB/100494msec) clat (usec): min=33, max=274374, avg=36647.88, stdev=24459.39 lat (usec): min=34, max=274376, avg=36650.21, stdev=24459.95 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 5538], 10.00th=[ 14484], 20.00th=[ 19006], | 30.00th=[ 22676], 40.00th=[ 26608], 50.00th=[ 31851], 60.00th=[ 37487], | 70.00th=[ 43779], 80.00th=[ 52167], 90.00th=[ 64750], 95.00th=[ 78119], | 99.00th=[127402], 99.50th=[145753], 99.90th=[235930], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 15, max= 111, per=25.74%, avg=60.22, stdev=19.46, samples=197 iops : min= 3, max= 27, avg=14.39, stdev= 4.89, samples=197 write: IOPS=15, BW=62.1KiB/s (63.5kB/s)(6236KiB/100494msec); 0 zone resets clat (usec): min=860, max=661305, avg=28665.63, stdev=33047.79 lat (usec): min=861, max=661308, avg=28668.59, stdev=33047.72 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1680], 20.00th=[ 3130], | 30.00th=[ 5473], 40.00th=[ 11207], 50.00th=[ 20579], 60.00th=[ 28443], | 70.00th=[ 37487], 80.00th=[ 51643], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[113771], 99.50th=[162530], 99.90th=[231736], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 15, max= 127, per=25.19%, avg=61.72, stdev=21.90, samples=198 iops : min= 3, max= 31, avg=14.76, stdev= 5.47, samples=198 lat (usec) : 50=0.42%, 100=1.60%, 250=0.26%, 500=0.10%, 1000=0.13% lat (msec) : 2=6.64%, 4=5.70%, 10=7.49%, 20=13.64%, 50=42.15% lat (msec) : 100=19.82%, 250=1.99%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.40%, ctx=6490, 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=235KiB/s (240kB/s), 58.8KiB/s-60.2KiB/s (60.2kB/s-61.7kB/s), io=23.4MiB (24.6MB), run=100324-102277msec WRITE: bw=246KiB/s (252kB/s), 61.2KiB/s-62.9KiB/s (62.7kB/s-64.4kB/s), io=24.6MiB (25.7MB), run=100324-102277msec rand-rw: (groupid=0, jobs=1): err= 0: pid=187561: Tue Sep 8 22:36:11 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5992KiB/138540msec) clat (msec): min=5, max=674, avg=35.88, stdev=36.10 lat (msec): min=5, max=674, avg=35.89, stdev=36.10 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 106], | 99.00th=[ 163], 99.50th=[ 184], 99.90th=[ 300], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 159, per=25.30%, avg=43.51, stdev=29.13, samples=269 iops : min= 1, max= 39, avg=10.25, stdev= 7.35, samples=269 write: IOPS=11, BW=45.4KiB/s (46.5kB/s)(6296KiB/138540msec); 0 zone resets clat (msec): min=10, max=287, avg=53.65, stdev=37.98 lat (msec): min=10, max=287, avg=53.65, stdev=37.98 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 81], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 190], 99.50th=[ 226], 99.90th=[ 266], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 136, per=25.20%, avg=45.36, stdev=28.60, samples=271 iops : min= 1, max= 34, avg=10.71, stdev= 7.19, samples=271 lat (msec) : 10=3.74%, 20=21.09%, 50=44.11%, 100=22.62%, 250=8.17% lat (msec) : 500=0.23%, 750=0.03% cpu : usr=0.07%, sys=2.57%, ctx=5103, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187562: Tue Sep 8 22:36:11 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(5940KiB/138919msec) clat (msec): min=5, max=621, avg=36.95, stdev=35.95 lat (msec): min=5, max=621, avg=36.96, stdev=35.95 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 80], 95.00th=[ 108], | 99.00th=[ 159], 99.50th=[ 186], 99.90th=[ 268], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7, max= 168, per=24.70%, avg=42.49, stdev=30.18, samples=273 iops : min= 1, max= 42, avg= 9.99, stdev= 7.59, samples=273 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6348KiB/138919msec); 0 zone resets clat (msec): min=9, max=291, avg=52.72, stdev=36.91 lat (msec): min=9, max=291, avg=52.72, stdev=36.91 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 50], | 70.00th=[ 61], 80.00th=[ 75], 90.00th=[ 103], 95.00th=[ 125], | 99.00th=[ 186], 99.50th=[ 226], 99.90th=[ 288], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 143, per=25.26%, avg=45.47, stdev=28.12, samples=273 iops : min= 1, max= 35, avg=10.74, stdev= 7.08, samples=273 lat (msec) : 10=3.84%, 20=19.66%, 50=45.38%, 100=22.62%, 250=8.24% lat (msec) : 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=2.63%, ctx=5175, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187563: Tue Sep 8 22:36:11 2026 read: IOPS=10, BW=43.6KiB/s (44.6kB/s)(6028KiB/138365msec) clat (msec): min=5, max=298, avg=35.61, stdev=31.41 lat (msec): min=5, max=298, avg=35.61, stdev=31.41 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 78], 95.00th=[ 104], | 99.00th=[ 153], 99.50th=[ 176], 99.90th=[ 247], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 151, per=25.32%, avg=43.55, stdev=28.22, samples=271 iops : min= 1, max= 37, avg=10.25, stdev= 7.12, samples=271 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6260KiB/138365msec); 0 zone resets clat (msec): min=10, max=658, avg=53.92, stdev=40.74 lat (msec): min=10, max=658, avg=53.93, stdev=40.74 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 79], 90.00th=[ 106], 95.00th=[ 129], | 99.00th=[ 186], 99.50th=[ 230], 99.90th=[ 284], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 143, per=24.91%, avg=44.85, stdev=27.91, samples=273 iops : min= 1, max= 35, avg=10.58, stdev= 7.03, samples=273 lat (msec) : 10=3.52%, 20=20.08%, 50=46.09%, 100=21.48%, 250=8.63% lat (msec) : 500=0.16%, 750=0.03% cpu : usr=0.07%, sys=2.58%, ctx=4975, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187565: Tue Sep 8 22:36:11 2026 read: IOPS=10, BW=43.6KiB/s (44.6kB/s)(6052KiB/138865msec) clat (msec): min=5, max=271, avg=36.82, stdev=32.56 lat (msec): min=5, max=271, avg=36.82, stdev=32.56 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 85], 95.00th=[ 108], | 99.00th=[ 150], 99.50th=[ 165], 99.90th=[ 262], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 135, per=25.31%, avg=43.54, stdev=28.88, samples=272 iops : min= 1, max= 33, avg=10.25, stdev= 7.27, samples=272 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(6236KiB/138865msec); 0 zone resets clat (msec): min=10, max=655, avg=53.14, stdev=38.37 lat (msec): min=10, max=655, avg=53.15, stdev=38.37 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 51], | 70.00th=[ 61], 80.00th=[ 78], 90.00th=[ 103], 95.00th=[ 125], | 99.00th=[ 174], 99.50th=[ 209], 99.90th=[ 279], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 136, per=24.93%, avg=44.87, stdev=27.06, samples=272 iops : min= 1, max= 34, avg=10.59, stdev= 6.82, samples=272 lat (msec) : 10=2.99%, 20=20.02%, 50=45.96%, 100=22.40%, 250=8.50% lat (msec) : 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=2.65%, ctx=5098, 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=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=173KiB/s (177kB/s), 42.8KiB/s-43.6KiB/s (43.8kB/s-44.6kB/s), io=23.4MiB (24.6MB), run=138365-138919msec WRITE: bw=181KiB/s (185kB/s), 44.9KiB/s-45.7KiB/s (45.0kB/s-46.8kB/s), io=24.6MiB (25.7MB), run=138365-138919msec 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=187601: Tue Sep 8 22:36:47 2026 read: IOPS=13, BW=221KiB/s (227kB/s)(5920KiB/26745msec) clat (usec): min=46, max=201642, avg=40625.86, stdev=26029.01 lat (usec): min=48, max=201643, avg=40630.12, stdev=26030.40 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 111], 10.00th=[ 16909], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 31327], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 47449], 80.00th=[ 55313], 90.00th=[ 71828], 95.00th=[ 83362], | 99.00th=[152044], 99.50th=[177210], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 63, max= 382, per=25.85%, avg=217.92, stdev=65.15, samples=52 iops : min= 3, max= 23, avg=12.92, stdev= 4.04, samples=52 write: IOPS=14, BW=238KiB/s (244kB/s)(6368KiB/26745msec); 0 zone resets clat (usec): min=1484, max=148008, avg=28921.74, stdev=26392.12 lat (usec): min=1486, max=148010, avg=28924.18, stdev=26392.21 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2638], 10.00th=[ 3621], 20.00th=[ 5800], | 30.00th=[ 8979], 40.00th=[ 15533], 50.00th=[ 21365], 60.00th=[ 29230], | 70.00th=[ 37487], 80.00th=[ 46400], 90.00th=[ 69731], 95.00th=[ 82314], | 99.00th=[115868], 99.50th=[141558], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 62, max= 383, per=26.73%, avg=237.13, stdev=78.95, samples=52 iops : min= 3, max= 23, avg=14.12, stdev= 5.01, samples=52 lat (usec) : 50=0.13%, 100=2.21%, 250=0.26% lat (msec) : 2=1.17%, 4=5.21%, 10=11.07%, 20=11.46%, 50=46.09% lat (msec) : 100=20.31%, 250=2.08% cpu : usr=0.11%, sys=8.11%, ctx=1874, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187603: Tue Sep 8 22:36:47 2026 read: IOPS=12, BW=202KiB/s (207kB/s)(5744KiB/28385msec) clat (usec): min=48, max=184664, avg=40743.61, stdev=27588.99 lat (usec): min=48, max=184665, avg=40744.85, stdev=27589.04 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 95], 10.00th=[ 13829], 20.00th=[ 20841], | 30.00th=[ 26346], 40.00th=[ 29754], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[149947], 99.50th=[160433], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 28, max= 414, per=24.06%, avg=202.84, stdev=86.58, samples=56 iops : min= 1, max= 25, avg=11.96, stdev= 5.45, samples=56 write: IOPS=14, BW=231KiB/s (236kB/s)(6544KiB/28385msec); 0 zone resets clat (usec): min=1393, max=174744, avg=32996.18, stdev=31740.93 lat (usec): min=1394, max=174748, avg=33021.84, stdev=31744.35 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2147], 10.00th=[ 3326], 20.00th=[ 6259], | 30.00th=[ 11469], 40.00th=[ 18744], 50.00th=[ 25035], 60.00th=[ 31065], | 70.00th=[ 40633], 80.00th=[ 54264], 90.00th=[ 74974], 95.00th=[ 91751], | 99.00th=[154141], 99.50th=[173016], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 31, max= 509, per=25.91%, avg=229.82, stdev=100.98, samples=56 iops : min= 1, max= 31, avg=13.66, stdev= 6.40, samples=56 lat (usec) : 50=0.13%, 100=2.34%, 250=0.65%, 500=0.13% lat (msec) : 2=2.08%, 4=4.95%, 10=8.07%, 20=12.50%, 50=44.01% lat (msec) : 100=21.48%, 250=3.65% cpu : usr=0.08%, sys=7.43%, ctx=1921, 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=187604: Tue Sep 8 22:36:47 2026 read: IOPS=14, BW=227KiB/s (233kB/s)(6256KiB/27516msec) clat (usec): min=43, max=246599, avg=39806.44, stdev=28867.50 lat (usec): min=44, max=246601, avg=39814.62, stdev=28874.76 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 77], 10.00th=[ 11076], 20.00th=[ 19530], | 30.00th=[ 26084], 40.00th=[ 30016], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 46400], 80.00th=[ 55837], 90.00th=[ 70779], 95.00th=[ 90702], | 99.00th=[149947], 99.50th=[170918], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 56, max= 442, per=26.98%, avg=227.44, stdev=80.21, samples=54 iops : min= 3, max= 27, avg=13.52, stdev= 5.13, samples=54 write: IOPS=13, BW=219KiB/s (224kB/s)(6032KiB/27516msec); 0 zone resets clat (usec): min=1366, max=218429, avg=31031.12, stdev=28068.75 lat (usec): min=1368, max=218433, avg=31033.80, stdev=28068.81 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2409], 10.00th=[ 3851], 20.00th=[ 6915], | 30.00th=[ 10814], 40.00th=[ 16909], 50.00th=[ 23200], 60.00th=[ 31065], | 70.00th=[ 40633], 80.00th=[ 51119], 90.00th=[ 69731], 95.00th=[ 89654], | 99.00th=[107480], 99.50th=[123208], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 63, max= 478, per=24.28%, avg=215.39, stdev=102.71, samples=54 iops : min= 3, max= 29, avg=12.78, stdev= 6.44, samples=54 lat (usec) : 50=0.13%, 100=3.52%, 250=1.17% lat (msec) : 2=1.30%, 4=3.65%, 10=9.38%, 20=13.67%, 50=43.10% lat (msec) : 100=21.48%, 250=2.60% cpu : usr=0.07%, sys=7.80%, ctx=1935, 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=187606: Tue Sep 8 22:36:47 2026 read: IOPS=14, BW=231KiB/s (236kB/s)(6032KiB/26148msec) clat (usec): min=48, max=160480, avg=38040.19, stdev=24864.37 lat (usec): min=49, max=160481, avg=38087.40, stdev=24908.44 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 12387], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 29492], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 46924], 80.00th=[ 55313], 90.00th=[ 68682], 95.00th=[ 80217], | 99.00th=[126354], 99.50th=[143655], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 31, max= 383, per=27.12%, avg=228.59, stdev=74.28, samples=51 iops : min= 1, max= 23, avg=13.59, stdev= 4.67, samples=51 write: IOPS=14, BW=239KiB/s (245kB/s)(6256KiB/26148msec); 0 zone resets clat (usec): min=1397, max=129017, avg=29955.86, stdev=28153.48 lat (usec): min=1399, max=129018, avg=29962.68, stdev=28159.57 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2278], 10.00th=[ 3523], 20.00th=[ 5342], | 30.00th=[ 8586], 40.00th=[ 13566], 50.00th=[ 21890], 60.00th=[ 29492], | 70.00th=[ 36439], 80.00th=[ 51643], 90.00th=[ 74974], 95.00th=[ 88605], | 99.00th=[116917], 99.50th=[124257], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 63, max= 448, per=26.66%, avg=236.45, stdev=79.07, samples=51 iops : min= 3, max= 28, avg=14.08, stdev= 5.07, samples=51 lat (usec) : 50=0.13%, 100=3.65%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.82%, 4=4.43%, 10=11.20%, 20=12.37%, 50=42.32% lat (msec) : 100=21.35%, 250=2.08% cpu : usr=0.10%, sys=8.05%, ctx=1911, 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=844KiB/s (864kB/s), 202KiB/s-231KiB/s (207kB/s-236kB/s), io=23.4MiB (24.5MB), run=26148-28385msec WRITE: bw=888KiB/s (909kB/s), 219KiB/s-239KiB/s (224kB/s-245kB/s), io=24.6MiB (25.8MB), run=26148-28385msec rand-rw: (groupid=0, jobs=1): err= 0: pid=187602: Tue Sep 8 22:36:55 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36333msec) clat (msec): min=5, max=224, avg=39.27, stdev=34.54 lat (msec): min=5, max=224, avg=39.27, stdev=34.54 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 43], 80.00th=[ 60], 90.00th=[ 86], 95.00th=[ 114], | 99.00th=[ 176], 99.50th=[ 213], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 446, per=24.44%, avg=160.06, stdev=98.96, samples=70 iops : min= 1, max= 27, avg= 9.17, stdev= 6.20, samples=70 write: IOPS=10, BW=175KiB/s (179kB/s)(6368KiB/36333msec); 0 zone resets clat (msec): min=13, max=239, avg=54.61, stdev=34.94 lat (msec): min=13, max=239, avg=54.62, stdev=34.94 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 81], 90.00th=[ 106], 95.00th=[ 123], | 99.00th=[ 163], 99.50th=[ 197], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 476, per=25.00%, avg=172.27, stdev=102.82, samples=71 iops : min= 1, max= 29, avg= 9.94, stdev= 6.44, samples=71 lat (msec) : 10=3.39%, 20=17.06%, 50=45.70%, 100=24.48%, 250=9.38% cpu : usr=0.04%, sys=2.81%, ctx=1240, 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=187605: Tue Sep 8 22:36:55 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(5744KiB/36048msec) clat (msec): min=6, max=167, avg=37.41, stdev=32.62 lat (msec): min=6, max=167, avg=37.41, stdev=32.62 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 55], 90.00th=[ 85], 95.00th=[ 111], | 99.00th=[ 163], 99.50th=[ 167], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 31, max= 501, per=24.50%, avg=160.49, stdev=106.73, samples=70 iops : min= 1, max= 31, avg= 9.20, stdev= 6.70, samples=70 write: IOPS=11, BW=182KiB/s (186kB/s)(6544KiB/36048msec); 0 zone resets clat (msec): min=13, max=284, avg=54.85, stdev=37.28 lat (msec): min=13, max=284, avg=54.85, stdev=37.28 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 44], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 81], 90.00th=[ 104], 95.00th=[ 125], | 99.00th=[ 174], 99.50th=[ 220], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 542, per=26.16%, avg=180.25, stdev=109.26, samples=71 iops : min= 1, max= 33, avg=10.45, stdev= 6.85, samples=71 lat (msec) : 10=1.56%, 20=19.53%, 50=45.18%, 100=24.48%, 250=8.98% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.77%, ctx=1235, 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=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=187607: Tue Sep 8 22:36:55 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35791msec) clat (msec): min=7, max=242, avg=38.81, stdev=35.57 lat (msec): min=7, max=242, avg=38.81, stdev=35.57 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 87], 95.00th=[ 111], | 99.00th=[ 192], 99.50th=[ 207], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 508, per=26.67%, avg=174.69, stdev=113.79, samples=70 iops : min= 1, max= 31, avg=10.10, stdev= 7.13, samples=70 write: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35791msec); 0 zone resets clat (msec): min=12, max=197, avg=54.14, stdev=34.82 lat (msec): min=12, max=197, avg=54.14, stdev=34.82 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 80], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 182], 99.50th=[ 199], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 509, per=24.04%, avg=165.64, stdev=93.37, samples=70 iops : min= 1, max= 31, avg= 9.53, stdev= 5.84, samples=70 lat (msec) : 10=0.91%, 20=20.05%, 50=48.31%, 100=21.61%, 250=9.11% cpu : usr=0.06%, sys=2.92%, ctx=1306, 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=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=187608: Tue Sep 8 22:36:55 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(6032KiB/36528msec) clat (msec): min=6, max=184, avg=39.24, stdev=33.76 lat (msec): min=6, max=184, avg=39.25, stdev=33.76 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 92], 95.00th=[ 110], | 99.00th=[ 171], 99.50th=[ 182], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 27, max= 476, per=25.23%, avg=165.27, stdev=105.02, samples=71 iops : min= 1, max= 29, avg= 9.51, stdev= 6.60, samples=71 write: IOPS=10, BW=171KiB/s (175kB/s)(6256KiB/36528msec); 0 zone resets clat (msec): min=10, max=328, avg=54.94, stdev=39.41 lat (msec): min=10, max=328, avg=54.94, stdev=39.41 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 64], 80.00th=[ 83], 90.00th=[ 113], 95.00th=[ 128], | 99.00th=[ 197], 99.50th=[ 220], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 571, per=25.16%, avg=173.32, stdev=109.91, samples=71 iops : min= 1, max= 35, avg=10.00, stdev= 6.88, samples=71 lat (msec) : 10=2.73%, 20=19.01%, 50=46.35%, 100=21.22%, 250=10.55% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.82%, ctx=1277, 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=656KiB/s (671kB/s), 159KiB/s-175KiB/s (163kB/s-179kB/s), io=23.4MiB (24.5MB), run=35791-36528msec WRITE: bw=690KiB/s (706kB/s), 169KiB/s-182KiB/s (173kB/s-186kB/s), io=24.6MiB (25.8MB), run=35791-36528msec 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=187635: Tue Sep 8 22:37:10 2026 read: IOPS=1, BW=1418KiB/s (1452kB/s)(7168KiB/5056msec) clat (usec): min=549, max=2469.0k, avg=492670.44, stdev=880909.98 lat (usec): min=550, max=2469.0k, avg=492672.00, stdev=880910.30 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], | 20.00th=[ 1434], 30.00th=[ 132645], 40.00th=[ 132645], | 50.00th=[ 233833], 60.00th=[ 304088], 70.00th=[ 304088], | 80.00th=[ 308282], 90.00th=[2466251], 95.00th=[2466251], | 99.00th=[2466251], 99.50th=[2466251], 99.90th=[2466251], | 99.95th=[2466251], 99.99th=[2466251] bw ( KiB/s): min= 2031, max= 3953, per=78.69%, avg=2518.75, stdev=956.19, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=1013KiB/s (1037kB/s)(5120KiB/5056msec); 0 zone resets clat (msec): min=201, max=454, avg=301.99, stdev=99.88 lat (msec): min=201, max=455, avg=302.14, stdev=99.97 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1957, max= 2048, per=44.90%, avg=2012.00, stdev=48.38, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=41.67%, >=2000=8.33% cpu : usr=0.00%, sys=16.64%, ctx=660, 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=187636: Tue Sep 8 22:37:10 2026 read: IOPS=0, BW=320KiB/s (328kB/s)(2048KiB/6398msec) clat (msec): min=199, max=295, avg=247.55, stdev=67.48 lat (msec): min=199, max=295, avg=247.55, stdev=67.48 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 1563, max= 1957, per=54.98%, avg=1760.00, stdev=278.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1601KiB/s (1639kB/s)(10.0MiB/6398msec); 0 zone resets clat (msec): min=122, max=2371, avg=569.01, stdev=665.14 lat (msec): min=122, max=2371, avg=569.14, stdev=665.22 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 182], | 30.00th=[ 186], 40.00th=[ 215], 50.00th=[ 355], 60.00th=[ 409], | 70.00th=[ 477], 80.00th=[ 659], 90.00th=[ 718], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 1957, max= 4096, per=51.49%, avg=2307.14, stdev=789.50, samples=7 iops : min= 1, max= 4, avg= 1.57, stdev= 1.13, samples=7 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=14.63%, ctx=189, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187638: Tue Sep 8 22:37:10 2026 read: IOPS=1, BW=1220KiB/s (1249kB/s)(6144KiB/5037msec) clat (usec): min=599, max=383018, avg=80124.08, stdev=152687.44 lat (usec): min=600, max=383020, avg=80125.63, stdev=152687.74 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 750], 50.00th=[ 750], 60.00th=[ 4228], | 70.00th=[ 91751], 80.00th=[ 91751], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 1957, max= 8126, per=100.00%, avg=5041.50, stdev=4362.14, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=1, BW=1220KiB/s (1249kB/s)(6144KiB/5037msec); 0 zone resets clat (msec): min=146, max=2793, avg=736.98, stdev=1013.28 lat (msec): min=146, max=2793, avg=737.05, stdev=1013.29 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 338], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 1957, max= 2942, per=50.09%, avg=2244.50, stdev=466.68, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 750=25.00% lat (msec) : 10=8.33%, 100=8.33%, 250=8.33%, 500=41.67%, >=2000=8.33% cpu : usr=0.06%, sys=10.01%, ctx=156, 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=187639: Tue Sep 8 22:37:10 2026 read: IOPS=0, BW=859KiB/s (879kB/s)(5120KiB/5963msec) clat (usec): min=682, max=282213, avg=121144.43, stdev=122467.89 lat (usec): min=683, max=282214, avg=121145.60, stdev=122467.81 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], 20.00th=[ 685], | 30.00th=[ 2040], 40.00th=[ 2040], 50.00th=[126354], 60.00th=[126354], | 70.00th=[193987], 80.00th=[193987], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 3915, max= 4015, per=100.00%, avg=3965.00, stdev=70.71, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1202KiB/s (1231kB/s)(7168KiB/5963msec); 0 zone resets clat (msec): min=157, max=2639, avg=760.51, stdev=846.73 lat (msec): min=157, max=2639, avg=760.61, stdev=846.73 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 355], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 451], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 726], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 1473, max= 4071, per=51.68%, avg=2316.00, stdev=1009.03, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=11.54%, ctx=225, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3201KiB/s (3278kB/s), 320KiB/s-1418KiB/s (328kB/s-1452kB/s), io=20.0MiB (20.0MB), run=5037-6398msec WRITE: bw=4481KiB/s (4589kB/s), 1013KiB/s-1601KiB/s (1037kB/s-1639kB/s), io=28.0MiB (29.4MB), run=5037-6398msec rand-rw: (groupid=0, jobs=1): err= 0: pid=187632: Tue Sep 8 22:37:10 2026 read: IOPS=1, BW=1110KiB/s (1137kB/s)(7168KiB/6457msec) clat (msec): min=74, max=2751, avg=586.02, stdev=970.67 lat (msec): min=75, max=2751, avg=586.02, stdev=970.67 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 82], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 192], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 550], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 1620, max= 2048, per=62.03%, avg=1966.83, stdev=170.76, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 write: IOPS=0, BW=793KiB/s (812kB/s)(5120KiB/6457msec); 0 zone resets clat (msec): min=111, max=1305, avg=451.86, stdev=485.77 lat (msec): min=111, max=1306, avg=452.24, stdev=486.30 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 2043, max= 4079, per=61.30%, avg=2721.67, stdev=1175.49, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.44%, ctx=90, 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=187633: Tue Sep 8 22:37:10 2026 read: IOPS=0, BW=325KiB/s (332kB/s)(2048KiB/6310msec) clat (msec): min=101, max=239, avg=170.68, stdev=97.80 lat (msec): min=101, max=239, avg=170.68, stdev=97.80 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 102], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 1446, max= 2015, per=54.57%, avg=1730.50, stdev=402.34, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1623KiB/s (1662kB/s)(10.0MiB/6310msec); 0 zone resets clat (msec): min=102, max=2649, avg=592.05, stdev=755.38 lat (msec): min=102, max=2649, avg=592.19, stdev=755.38 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 134], | 30.00th=[ 165], 40.00th=[ 218], 50.00th=[ 245], 60.00th=[ 518], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 659], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 2039, max= 6144, per=82.65%, avg=3669.80, stdev=1711.43, samples=5 iops : min= 1, max= 6, avg= 3.00, stdev= 1.87, samples=5 lat (msec) : 250=58.33%, 750=33.33%, >=2000=8.33% cpu : usr=0.03%, sys=5.66%, ctx=96, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187634: Tue Sep 8 22:37:10 2026 read: IOPS=0, BW=956KiB/s (979kB/s)(6144KiB/6429msec) clat (msec): min=94, max=327, avg=198.63, stdev=82.43 lat (msec): min=94, max=327, avg=198.63, stdev=82.43 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 262], 80.00th=[ 262], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 2043, max= 4079, per=100.00%, avg=3384.33, stdev=1161.88, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=956KiB/s (979kB/s)(6144KiB/6429msec); 0 zone resets clat (msec): min=285, max=2882, avg=848.48, stdev=1026.29 lat (msec): min=285, max=2882, avg=848.58, stdev=1026.29 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 355], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1732, max= 2048, per=44.53%, avg=1977.20, stdev=137.76, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.16%, ctx=104, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187637: Tue Sep 8 22:37:10 2026 read: IOPS=0, BW=876KiB/s (897kB/s)(5120KiB/5842msec) clat (msec): min=124, max=745, avg=352.06, stdev=286.81 lat (msec): min=124, max=745, avg=352.06, stdev=286.81 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 126], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 171], 60.00th=[ 171], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2043, max= 4031, per=85.38%, avg=2707.33, stdev=1146.33, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1227KiB/s (1256kB/s)(7168KiB/5842msec); 0 zone resets clat (msec): min=122, max=2645, avg=572.82, stdev=922.19 lat (msec): min=122, max=2645, avg=573.43, stdev=922.11 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 131], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 456], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 1510, max= 6144, per=88.09%, avg=3911.00, stdev=2321.56, samples=3 iops : min= 1, max= 6, avg= 3.33, stdev= 2.52, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.79%, ctx=144, 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=3172KiB/s (3248kB/s), 325KiB/s-1110KiB/s (332kB/s-1137kB/s), io=20.0MiB (20.0MB), run=5842-6457msec WRITE: bw=4440KiB/s (4547kB/s), 793KiB/s-1623KiB/s (812kB/s-1662kB/s), io=28.0MiB (29.4MB), run=5842-6457msec 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=187647: Tue Sep 8 22:37:21 2026 read: IOPS=0, BW=2952KiB/s (3023kB/s)(12.0MiB/4163msec) clat (msec): min=436, max=2847, avg=1305.31, stdev=1339.25 lat (msec): min=436, max=2847, avg=1305.31, stdev=1339.25 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 8062, max= 8159, per=100.00%, avg=8110.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=11.36%, ctx=580, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187648: Tue Sep 8 22:37:21 2026 read: IOPS=0, BW=956KiB/s (979kB/s)(4096KiB/4284msec) clat (nsec): min=2657.5M, max=2657.5M, avg=2657467255.00, stdev= 0.00 lat (nsec): min=2657.5M, max=2657.5M, avg=2657469612.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2668], 5.00th=[ 2668], 10.00th=[ 2668], 20.00th=[ 2668], | 30.00th=[ 2668], 40.00th=[ 2668], 50.00th=[ 2668], 60.00th=[ 2668], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1912KiB/s (1958kB/s)(8192KiB/4284msec); 0 zone resets clat (msec): min=402, max=1003, avg=703.06, stdev=424.82 lat (msec): min=402, max=1005, avg=704.29, stdev=426.25 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 1003], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=7.73%, ctx=611, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187649: Tue Sep 8 22:37:21 2026 write: IOPS=0, BW=2810KiB/s (2877kB/s)(12.0MiB/4373msec); 0 zone resets clat (msec): min=791, max=2424, avg=1382.45, stdev=905.07 lat (msec): min=794, max=2425, avg=1384.08, stdev=904.37 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.02%, sys=3.66%, ctx=90, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187650: Tue Sep 8 22:37:21 2026 write: IOPS=0, BW=3000KiB/s (3072kB/s)(12.0MiB/4096msec); 0 zone resets clat (msec): min=463, max=2358, avg=1282.17, stdev=973.65 lat (msec): min=465, max=2362, avg=1284.08, stdev=974.62 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.86%, ctx=72, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3824KiB/s (3916kB/s), 956KiB/s-2952KiB/s (979kB/s-3023kB/s), io=16.0MiB (16.8MB), run=4163-4284msec WRITE: bw=7493KiB/s (7673kB/s), 1912KiB/s-3000KiB/s (1958kB/s-3072kB/s), io=32.0MiB (33.6MB), run=4096-4373msec rand-rw: (groupid=0, jobs=1): err= 0: pid=187651: Tue Sep 8 22:37:21 2026 read: IOPS=0, BW=2697KiB/s (2762kB/s)(12.0MiB/4556msec) clat (msec): min=230, max=3355, avg=1465.44, stdev=1662.62 lat (msec): min=230, max=3355, avg=1465.44, stdev=1662.62 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, 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=2.44%, ctx=58, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187652: Tue Sep 8 22:37:21 2026 read: IOPS=0, BW=906KiB/s (928kB/s)(4096KiB/4519msec) clat (nsec): min=3020.1M, max=3020.1M, avg=3020139919.00, stdev= 0.00 lat (nsec): min=3020.1M, max=3020.1M, avg=3020142104.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3037], 5.00th=[ 3037], 10.00th=[ 3037], 20.00th=[ 3037], | 30.00th=[ 3037], 40.00th=[ 3037], 50.00th=[ 3037], 60.00th=[ 3037], | 70.00th=[ 3037], 80.00th=[ 3037], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1813KiB/s (1856kB/s)(8192KiB/4519msec); 0 zone resets clat (msec): min=376, max=992, avg=684.28, stdev=435.60 lat (msec): min=376, max=992, avg=684.60, stdev=435.70 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.59%, ctx=58, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187653: Tue Sep 8 22:37:21 2026 write: IOPS=0, BW=2791KiB/s (2858kB/s)(12.0MiB/4402msec); 0 zone resets clat (msec): min=181, max=3014, avg=1444.67, stdev=1441.16 lat (msec): min=181, max=3015, avg=1445.27, stdev=1441.47 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 3004], 80.00th=[ 3004], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.36%, ctx=64, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=187654: Tue Sep 8 22:37:21 2026 write: IOPS=0, BW=3004KiB/s (3076kB/s)(12.0MiB/4091msec); 0 zone resets clat (msec): min=246, max=2692, avg=1307.00, stdev=1255.15 lat (msec): min=246, max=2693, avg=1307.86, stdev=1255.04 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 2702], 80.00th=[ 2702], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, 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=0.15%, sys=3.86%, ctx=86, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3596KiB/s (3682kB/s), 906KiB/s-2697KiB/s (928kB/s-2762kB/s), io=16.0MiB (16.8MB), run=4519-4556msec WRITE: bw=7251KiB/s (7425kB/s), 1813KiB/s-3004KiB/s (1856kB/s-3076kB/s), io=32.0MiB (33.6MB), run=4091-4519msec