== sanity test 398b: DIO and buffer IO race ============== 06:20:47 (1768562447) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.44676 s, 9.2 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=181761: Fri Jan 16 06:22:48 2026 read: IOPS=14, BW=58.4KiB/s (59.8kB/s)(5992KiB/102540msec) clat (usec): min=102, max=534908, avg=37396.05, stdev=27738.21 lat (usec): min=103, max=534910, avg=37397.19, stdev=27738.23 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 1188], 10.00th=[ 13960], 20.00th=[ 18482], | 30.00th=[ 22414], 40.00th=[ 26870], 50.00th=[ 31851], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[125305], 99.50th=[143655], 99.90th=[170918], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 12, max= 119, per=24.84%, avg=57.88, stdev=23.06, samples=202 iops : min= 3, max= 29, avg=13.83, stdev= 5.77, samples=202 write: IOPS=15, BW=61.4KiB/s (62.9kB/s)(6296KiB/102540msec); 0 zone resets clat (usec): min=845, max=177110, avg=29465.07, stdev=30347.51 lat (usec): min=846, max=177112, avg=29469.87, stdev=30345.39 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1139], 10.00th=[ 1287], 20.00th=[ 2606], | 30.00th=[ 5669], 40.00th=[ 14484], 50.00th=[ 21365], 60.00th=[ 27919], | 70.00th=[ 37487], 80.00th=[ 52167], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[128451], 99.50th=[147850], 99.90th=[175113], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 15, max= 191, per=25.08%, avg=61.20, stdev=24.17, samples=201 iops : min= 3, max= 47, avg=14.67, stdev= 6.07, samples=201 lat (usec) : 250=2.05%, 500=0.20%, 750=0.13%, 1000=0.46% lat (msec) : 2=8.33%, 4=4.49%, 10=6.22%, 20=14.10%, 50=42.09% lat (msec) : 100=18.98%, 250=2.93%, 750=0.03% cpu : usr=0.07%, sys=5.19%, ctx=6381, 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=181762: Fri Jan 16 06:22:48 2026 read: IOPS=14, BW=57.7KiB/s (59.1kB/s)(5940KiB/102949msec) clat (usec): min=110, max=565583, avg=37993.55, stdev=26760.10 lat (usec): min=110, max=565585, avg=37997.88, stdev=26762.80 clat percentiles (usec): | 1.00th=[ 143], 5.00th=[ 9765], 10.00th=[ 14615], 20.00th=[ 19268], | 30.00th=[ 23725], 40.00th=[ 28443], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 45351], 80.00th=[ 53740], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[119014], 99.50th=[130548], 99.90th=[181404], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 6, max= 119, per=24.43%, avg=56.93, stdev=19.83, samples=203 iops : min= 1, max= 29, avg=13.59, stdev= 4.97, samples=203 write: IOPS=15, BW=61.7KiB/s (63.1kB/s)(6348KiB/102949msec); 0 zone resets clat (usec): min=586, max=193649, avg=29225.85, stdev=29047.71 lat (usec): min=587, max=193650, avg=29230.56, stdev=29046.34 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1106], 10.00th=[ 1270], 20.00th=[ 2868], | 30.00th=[ 5932], 40.00th=[ 16319], 50.00th=[ 22414], 60.00th=[ 28967], | 70.00th=[ 38011], 80.00th=[ 50594], 90.00th=[ 68682], 95.00th=[ 86508], | 99.00th=[125305], 99.50th=[143655], 99.90th=[191890], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 15, max= 159, per=24.97%, avg=60.92, stdev=24.01, samples=202 iops : min= 3, max= 39, avg=14.59, stdev= 6.01, samples=202 lat (usec) : 250=1.17%, 500=0.26%, 750=0.20%, 1000=0.55% lat (msec) : 2=7.58%, 4=4.52%, 10=5.70%, 20=14.62%, 50=43.59% lat (msec) : 100=19.63%, 250=2.15%, 750=0.03% cpu : usr=0.08%, sys=4.97%, ctx=6282, 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=181763: Fri Jan 16 06:22:48 2026 read: IOPS=14, BW=59.4KiB/s (60.8kB/s)(6028KiB/101464msec) clat (usec): min=83, max=192277, avg=37769.72, stdev=24241.36 lat (usec): min=84, max=192278, avg=37772.45, stdev=24240.85 clat percentiles (usec): | 1.00th=[ 139], 5.00th=[ 9765], 10.00th=[ 14222], 20.00th=[ 19268], | 30.00th=[ 23725], 40.00th=[ 27919], 50.00th=[ 33162], 60.00th=[ 39060], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 79168], | 99.00th=[120062], 99.50th=[152044], 99.90th=[177210], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 15, max= 127, per=25.45%, avg=59.30, stdev=21.34, samples=199 iops : min= 3, max= 31, avg=14.18, stdev= 5.36, samples=199 write: IOPS=15, BW=61.7KiB/s (63.2kB/s)(6260KiB/101464msec); 0 zone resets clat (usec): min=721, max=596145, avg=28389.62, stdev=31767.40 lat (usec): min=722, max=596147, avg=28391.19, stdev=31767.49 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1106], 10.00th=[ 1205], 20.00th=[ 2606], | 30.00th=[ 5735], 40.00th=[ 12649], 50.00th=[ 20579], 60.00th=[ 28443], | 70.00th=[ 36963], 80.00th=[ 49546], 90.00th=[ 67634], 95.00th=[ 84411], | 99.00th=[123208], 99.50th=[132645], 99.90th=[185598], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 6, max= 127, per=25.09%, avg=61.21, stdev=24.07, samples=200 iops : min= 1, max= 31, avg=14.66, stdev= 6.01, samples=200 lat (usec) : 100=0.07%, 250=1.73%, 500=0.10%, 750=0.07%, 1000=0.52% lat (msec) : 2=8.17%, 4=4.62%, 10=6.05%, 20=13.93%, 50=43.20% lat (msec) : 100=19.21%, 250=2.31%, 750=0.03% cpu : usr=0.07%, sys=5.15%, ctx=6270, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181764: Fri Jan 16 06:22:48 2026 read: IOPS=14, BW=59.4KiB/s (60.8kB/s)(6052KiB/101969msec) clat (usec): min=105, max=203279, avg=37787.56, stdev=23708.57 lat (usec): min=105, max=203280, avg=37788.88, stdev=23708.64 clat percentiles (usec): | 1.00th=[ 143], 5.00th=[ 9503], 10.00th=[ 14222], 20.00th=[ 19530], | 30.00th=[ 23462], 40.00th=[ 28181], 50.00th=[ 33424], 60.00th=[ 38536], | 70.00th=[ 46400], 80.00th=[ 54264], 90.00th=[ 67634], 95.00th=[ 79168], | 99.00th=[116917], 99.50th=[128451], 99.90th=[191890], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 7, max= 119, per=25.42%, avg=59.23, stdev=20.97, samples=200 iops : min= 1, max= 29, avg=14.18, stdev= 5.27, samples=200 write: IOPS=15, BW=61.2KiB/s (62.6kB/s)(6236KiB/101969msec); 0 zone resets clat (usec): min=781, max=574679, avg=28637.86, stdev=32366.38 lat (usec): min=782, max=574682, avg=28640.26, stdev=32366.45 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1123], 10.00th=[ 1221], 20.00th=[ 2442], | 30.00th=[ 5080], 40.00th=[ 13042], 50.00th=[ 21103], 60.00th=[ 28181], | 70.00th=[ 38011], 80.00th=[ 50594], 90.00th=[ 68682], 95.00th=[ 84411], | 99.00th=[132645], 99.50th=[154141], 99.90th=[225444], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 6, max= 166, per=24.82%, avg=60.57, stdev=23.92, samples=201 iops : min= 1, max= 41, avg=14.51, stdev= 6.01, samples=201 lat (usec) : 250=1.79%, 500=0.16%, 750=0.07%, 1000=0.62% lat (msec) : 2=8.40%, 4=4.62%, 10=5.96%, 20=13.80%, 50=41.60% lat (msec) : 100=20.87%, 250=2.08%, 750=0.03% cpu : usr=0.09%, sys=5.28%, ctx=6325, 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=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=233KiB/s (239kB/s), 57.7KiB/s-59.4KiB/s (59.1kB/s-60.8kB/s), io=23.4MiB (24.6MB), run=101464-102949msec WRITE: bw=244KiB/s (250kB/s), 61.2KiB/s-61.7KiB/s (62.6kB/s-63.2kB/s), io=24.6MiB (25.7MB), run=101464-102949msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181756: Fri Jan 16 06:23:17 2026 read: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5992KiB/132750msec) clat (msec): min=3, max=624, avg=35.26, stdev=35.40 lat (msec): min=3, max=624, avg=35.26, stdev=35.40 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 37], 80.00th=[ 55], 90.00th=[ 82], 95.00th=[ 105], | 99.00th=[ 150], 99.50th=[ 174], 99.90th=[ 239], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7, max= 173, per=24.98%, avg=44.97, stdev=33.01, samples=259 iops : min= 1, max= 43, avg=10.61, stdev= 8.32, samples=259 write: IOPS=11, BW=47.4KiB/s (48.6kB/s)(6296KiB/132750msec); 0 zone resets clat (msec): min=6, max=311, avg=50.57, stdev=36.27 lat (msec): min=6, max=311, avg=50.58, stdev=36.27 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 79], 90.00th=[ 102], 95.00th=[ 123], | 99.00th=[ 174], 99.50th=[ 190], 99.90th=[ 251], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 171, per=24.93%, avg=47.12, stdev=31.75, samples=260 iops : min= 1, max= 42, avg=11.15, stdev= 8.01, samples=260 lat (msec) : 4=0.03%, 10=5.21%, 20=25.52%, 50=38.35%, 100=22.75% lat (msec) : 250=8.04%, 500=0.07%, 750=0.03% cpu : usr=0.06%, sys=1.97%, ctx=4935, 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=181757: Fri Jan 16 06:23:17 2026 read: IOPS=11, BW=44.8KiB/s (45.9kB/s)(5940KiB/132627msec) clat (msec): min=4, max=640, avg=34.04, stdev=35.21 lat (msec): min=4, max=640, avg=34.04, stdev=35.21 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 74], 95.00th=[ 106], | 99.00th=[ 153], 99.50th=[ 182], 99.90th=[ 271], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7, max= 173, per=25.29%, avg=45.51, stdev=32.12, samples=255 iops : min= 1, max= 43, avg=10.76, stdev= 8.11, samples=255 write: IOPS=11, BW=47.9KiB/s (49.0kB/s)(6348KiB/132627msec); 0 zone resets clat (msec): min=9, max=273, avg=51.50, stdev=37.53 lat (msec): min=9, max=273, avg=51.51, stdev=37.53 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 62], 80.00th=[ 79], 90.00th=[ 105], 95.00th=[ 127], | 99.00th=[ 178], 99.50th=[ 211], 99.90th=[ 257], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 168, per=25.23%, avg=47.68, stdev=31.63, samples=260 iops : min= 1, max= 42, avg=11.29, stdev= 7.98, samples=260 lat (msec) : 10=4.85%, 20=24.02%, 50=42.64%, 100=19.82%, 250=8.50% lat (msec) : 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=1.87%, ctx=4680, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181758: Fri Jan 16 06:23:17 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6028KiB/131858msec) clat (msec): min=4, max=274, avg=34.16, stdev=32.85 lat (msec): min=4, max=274, avg=34.16, stdev=32.85 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 50], 90.00th=[ 75], 95.00th=[ 101], | 99.00th=[ 165], 99.50th=[ 186], 99.90th=[ 257], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 183, per=25.20%, avg=45.37, stdev=32.07, samples=258 iops : min= 1, max= 45, avg=10.71, stdev= 8.07, samples=258 write: IOPS=11, BW=47.5KiB/s (48.6kB/s)(6260KiB/131858msec); 0 zone resets clat (msec): min=6, max=671, avg=51.15, stdev=40.26 lat (msec): min=6, max=671, avg=51.15, stdev=40.26 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 50], | 70.00th=[ 61], 80.00th=[ 74], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 174], 99.50th=[ 209], 99.90th=[ 309], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 156, per=24.85%, avg=46.96, stdev=30.94, samples=258 iops : min= 1, max= 39, avg=11.11, stdev= 7.80, samples=258 lat (msec) : 10=5.24%, 20=24.58%, 50=40.66%, 100=21.48%, 250=7.88% lat (msec) : 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=2.02%, ctx=4825, 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=181759: Fri Jan 16 06:23:17 2026 read: IOPS=11, BW=45.6KiB/s (46.7kB/s)(6052KiB/132575msec) clat (msec): min=4, max=281, avg=33.98, stdev=31.65 lat (msec): min=4, max=281, avg=33.98, stdev=31.65 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 51], 90.00th=[ 75], 95.00th=[ 100], | 99.00th=[ 159], 99.50th=[ 184], 99.90th=[ 257], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 190, per=25.69%, avg=46.25, stdev=32.68, samples=256 iops : min= 1, max= 47, avg=10.93, stdev= 8.21, samples=256 write: IOPS=11, BW=47.0KiB/s (48.2kB/s)(6236KiB/132575msec); 0 zone resets clat (msec): min=10, max=665, avg=51.84, stdev=39.87 lat (msec): min=10, max=665, avg=51.84, stdev=39.86 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 78], 90.00th=[ 104], 95.00th=[ 128], | 99.00th=[ 184], 99.50th=[ 205], 99.90th=[ 257], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 173, per=24.79%, avg=46.85, stdev=30.77, samples=260 iops : min= 1, max= 43, avg=11.08, stdev= 7.77, samples=260 lat (msec) : 10=4.62%, 20=24.06%, 50=41.63%, 100=21.88%, 250=7.68% lat (msec) : 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=1.94%, ctx=4603, 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=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=181KiB/s (185kB/s), 44.8KiB/s-45.7KiB/s (45.9kB/s-46.8kB/s), io=23.4MiB (24.6MB), run=131858-132750msec WRITE: bw=189KiB/s (194kB/s), 47.0KiB/s-47.9KiB/s (48.2kB/s-49.0kB/s), io=24.6MiB (25.7MB), run=131858-132750msec 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=181802: Fri Jan 16 06:23:48 2026 read: IOPS=16, BW=267KiB/s (274kB/s)(5920KiB/22161msec) clat (usec): min=95, max=129747, avg=30112.39, stdev=18462.77 lat (usec): min=96, max=129749, avg=30113.40, stdev=18462.75 clat percentiles (usec): | 1.00th=[ 128], 5.00th=[ 163], 10.00th=[ 293], 20.00th=[ 16909], | 30.00th=[ 21365], 40.00th=[ 24249], 50.00th=[ 27919], 60.00th=[ 32375], | 70.00th=[ 38011], 80.00th=[ 44303], 90.00th=[ 53740], 95.00th=[ 61604], | 99.00th=[ 79168], 99.50th=[ 89654], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 127, max= 479, per=25.25%, avg=265.93, stdev=77.76, samples=43 iops : min= 7, max= 29, avg=15.86, stdev= 4.88, samples=43 write: IOPS=17, BW=287KiB/s (294kB/s)(6368KiB/22161msec); 0 zone resets clat (usec): min=1033, max=242052, avg=27597.78, stdev=26641.22 lat (usec): min=1035, max=242054, avg=27609.71, stdev=26637.55 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1713], 10.00th=[ 2180], 20.00th=[ 4555], | 30.00th=[ 8455], 40.00th=[ 14484], 50.00th=[ 21890], 60.00th=[ 28443], | 70.00th=[ 34866], 80.00th=[ 47973], 90.00th=[ 62653], 95.00th=[ 73925], | 99.00th=[109577], 99.50th=[137364], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 95, max= 606, per=25.98%, avg=287.91, stdev=107.83, samples=43 iops : min= 5, max= 37, avg=17.26, stdev= 6.71, samples=43 lat (usec) : 100=0.13%, 250=4.30%, 500=0.78%, 750=0.13% lat (msec) : 2=4.56%, 4=5.34%, 10=7.94%, 20=14.32%, 50=47.01% lat (msec) : 100=14.71%, 250=0.78% cpu : usr=0.06%, sys=7.04%, ctx=1701, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181803: Fri Jan 16 06:23:48 2026 read: IOPS=15, BW=253KiB/s (259kB/s)(5744KiB/22733msec) clat (usec): min=97, max=141746, avg=35096.61, stdev=20754.02 lat (usec): min=98, max=141747, avg=35097.67, stdev=20754.06 clat percentiles (usec): | 1.00th=[ 151], 5.00th=[ 594], 10.00th=[ 13435], 20.00th=[ 18220], | 30.00th=[ 22676], 40.00th=[ 26870], 50.00th=[ 31327], 60.00th=[ 36963], | 70.00th=[ 44303], 80.00th=[ 51119], 90.00th=[ 63177], 95.00th=[ 71828], | 99.00th=[ 92799], 99.50th=[ 99091], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 95, max= 382, per=23.74%, avg=249.93, stdev=69.08, samples=44 iops : min= 5, max= 23, avg=14.84, stdev= 4.38, samples=44 write: IOPS=17, BW=288KiB/s (295kB/s)(6544KiB/22733msec); 0 zone resets clat (usec): min=1090, max=109251, avg=24701.74, stdev=21802.32 lat (usec): min=1092, max=109253, avg=24714.69, stdev=21809.72 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1745], 10.00th=[ 2114], 20.00th=[ 4178], | 30.00th=[ 7701], 40.00th=[ 14615], 50.00th=[ 18220], 60.00th=[ 24773], | 70.00th=[ 32375], 80.00th=[ 43779], 90.00th=[ 57934], 95.00th=[ 67634], | 99.00th=[ 88605], 99.50th=[ 92799], 99.90th=[109577], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 62, max= 605, per=25.39%, avg=281.34, stdev=100.84, samples=44 iops : min= 3, max= 37, avg=16.82, stdev= 6.27, samples=44 lat (usec) : 100=0.13%, 250=1.56%, 500=0.52%, 750=0.26% lat (msec) : 2=4.82%, 4=5.47%, 10=8.07%, 20=17.58%, 50=44.14% lat (msec) : 100=17.19%, 250=0.26% cpu : usr=0.07%, sys=6.91%, ctx=1729, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181804: Fri Jan 16 06:23:48 2026 read: IOPS=17, BW=287KiB/s (294kB/s)(6256KiB/21805msec) clat (usec): min=85, max=262920, avg=31222.48, stdev=22613.54 lat (usec): min=85, max=262921, avg=31233.73, stdev=22612.97 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 176], 10.00th=[ 6063], 20.00th=[ 16188], | 30.00th=[ 20841], 40.00th=[ 23987], 50.00th=[ 27919], 60.00th=[ 32375], | 70.00th=[ 36963], 80.00th=[ 44303], 90.00th=[ 57934], 95.00th=[ 67634], | 99.00th=[ 92799], 99.50th=[111674], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 96, max= 532, per=27.45%, avg=289.00, stdev=95.39, samples=42 iops : min= 6, max= 33, avg=17.33, stdev= 5.95, samples=42 write: IOPS=17, BW=277KiB/s (283kB/s)(6032KiB/21805msec); 0 zone resets clat (usec): min=1173, max=131281, avg=25380.77, stdev=24165.56 lat (usec): min=1173, max=131283, avg=25382.95, stdev=24165.28 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1745], 10.00th=[ 2147], 20.00th=[ 4178], | 30.00th=[ 7242], 40.00th=[ 14484], 50.00th=[ 19006], 60.00th=[ 24249], | 70.00th=[ 32637], 80.00th=[ 43254], 90.00th=[ 58983], 95.00th=[ 74974], | 99.00th=[109577], 99.50th=[115868], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 158, max= 506, per=24.78%, avg=274.55, stdev=81.85, samples=42 iops : min= 9, max= 31, avg=16.40, stdev= 5.19, samples=42 lat (usec) : 100=0.52%, 250=2.73%, 500=0.78%, 750=0.39% lat (msec) : 2=4.56%, 4=5.60%, 10=8.59%, 20=16.93%, 50=45.31% lat (msec) : 100=13.41%, 250=1.04%, 500=0.13% cpu : usr=0.05%, sys=6.88%, ctx=1707, 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=181805: Fri Jan 16 06:23:48 2026 read: IOPS=17, BW=276KiB/s (283kB/s)(6032KiB/21851msec) clat (usec): min=94, max=121361, avg=30469.25, stdev=20270.73 lat (usec): min=95, max=121361, avg=30481.78, stdev=20272.72 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 159], 10.00th=[ 310], 20.00th=[ 15795], | 30.00th=[ 20841], 40.00th=[ 24773], 50.00th=[ 28705], 60.00th=[ 32637], | 70.00th=[ 35914], 80.00th=[ 44827], 90.00th=[ 54789], 95.00th=[ 66847], | 99.00th=[ 91751], 99.50th=[119014], 99.90th=[121111], 99.95th=[121111], | 99.99th=[121111] bw ( KiB/s): min= 157, max= 415, per=26.12%, avg=275.02, stdev=76.51, samples=42 iops : min= 9, max= 25, avg=16.43, stdev= 4.76, samples=42 write: IOPS=17, BW=286KiB/s (293kB/s)(6256KiB/21851msec); 0 zone resets clat (usec): min=1002, max=279528, avg=26428.03, stdev=28032.37 lat (usec): min=1003, max=279529, avg=26432.94, stdev=28031.76 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1516], 10.00th=[ 2008], 20.00th=[ 3392], | 30.00th=[ 6587], 40.00th=[ 13698], 50.00th=[ 19792], 60.00th=[ 26346], | 70.00th=[ 34341], 80.00th=[ 46924], 90.00th=[ 58459], 95.00th=[ 72877], | 99.00th=[123208], 99.50th=[160433], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 126, max= 510, per=25.81%, avg=286.02, stdev=84.17, samples=42 iops : min= 7, max= 31, avg=17.12, stdev= 5.30, samples=42 lat (usec) : 100=0.13%, 250=4.17%, 500=1.43%, 1000=0.13% lat (msec) : 2=5.34%, 4=6.38%, 10=7.29%, 20=14.58%, 50=45.31% lat (msec) : 100=14.06%, 250=1.04%, 500=0.13% cpu : usr=0.05%, sys=6.92%, ctx=1667, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1054KiB/s (1079kB/s), 253KiB/s-287KiB/s (259kB/s-294kB/s), io=23.4MiB (24.5MB), run=21805-22733msec WRITE: bw=1109KiB/s (1135kB/s), 277KiB/s-288KiB/s (283kB/s-295kB/s), io=24.6MiB (25.8MB), run=21805-22733msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181797: Fri Jan 16 06:23:55 2026 read: IOPS=12, BW=198KiB/s (202kB/s)(5920KiB/29953msec) clat (msec): min=5, max=143, avg=30.42, stdev=23.67 lat (msec): min=5, max=143, avg=30.42, stdev=23.67 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 45], 90.00th=[ 63], 95.00th=[ 84], | 99.00th=[ 109], 99.50th=[ 116], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 31, max= 510, per=24.46%, avg=195.44, stdev=111.13, samples=59 iops : min= 1, max= 31, avg=11.49, stdev= 6.99, samples=59 write: IOPS=13, BW=213KiB/s (218kB/s)(6368KiB/29953msec); 0 zone resets clat (msec): min=12, max=297, avg=46.73, stdev=32.36 lat (msec): min=12, max=297, avg=46.73, stdev=32.36 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 53], 80.00th=[ 65], 90.00th=[ 90], 95.00th=[ 107], | 99.00th=[ 155], 99.50th=[ 194], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 32, max= 478, per=25.15%, avg=211.51, stdev=102.51, samples=59 iops : min= 2, max= 29, avg=12.49, stdev= 6.43, samples=59 lat (msec) : 10=4.69%, 20=21.88%, 50=47.79%, 100=20.96%, 250=4.56% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=2.47%, ctx=1212, 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=181798: Fri Jan 16 06:23:55 2026 read: IOPS=12, BW=192KiB/s (197kB/s)(5744KiB/29888msec) clat (msec): min=6, max=144, avg=31.62, stdev=26.51 lat (msec): min=6, max=144, avg=31.62, stdev=26.51 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 46], 90.00th=[ 73], 95.00th=[ 90], | 99.00th=[ 134], 99.50th=[ 144], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 31, max= 510, per=24.05%, avg=192.17, stdev=109.47, samples=59 iops : min= 1, max= 31, avg=11.27, stdev= 6.94, samples=59 write: IOPS=13, BW=219KiB/s (224kB/s)(6544KiB/29888msec); 0 zone resets clat (msec): min=9, max=306, avg=45.03, stdev=30.11 lat (msec): min=9, max=306, avg=45.03, stdev=30.11 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 54], 80.00th=[ 66], 90.00th=[ 83], 95.00th=[ 103], | 99.00th=[ 133], 99.50th=[ 140], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 62, max= 509, per=25.95%, avg=218.20, stdev=115.50, samples=59 iops : min= 3, max= 31, avg=12.92, stdev= 7.27, samples=59 lat (msec) : 10=2.73%, 20=24.87%, 50=47.01%, 100=20.57%, 250=4.69% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=2.39%, ctx=1232, 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=181799: Fri Jan 16 06:23:55 2026 read: IOPS=13, BW=211KiB/s (216kB/s)(6256KiB/29691msec) clat (msec): min=5, max=159, avg=31.12, stdev=25.92 lat (msec): min=5, max=159, avg=31.13, stdev=25.92 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 45], 90.00th=[ 65], 95.00th=[ 89], | 99.00th=[ 134], 99.50th=[ 157], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 62, max= 638, per=26.17%, avg=209.14, stdev=124.16, samples=58 iops : min= 3, max= 39, avg=12.34, stdev= 7.85, samples=58 write: IOPS=12, BW=203KiB/s (208kB/s)(6032KiB/29691msec); 0 zone resets clat (msec): min=9, max=216, avg=46.19, stdev=27.99 lat (msec): min=9, max=216, avg=46.20, stdev=27.99 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 66], 90.00th=[ 86], 95.00th=[ 102], | 99.00th=[ 136], 99.50th=[ 146], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 504, per=23.66%, avg=198.97, stdev=97.61, samples=58 iops : min= 1, max= 31, avg=11.72, stdev= 6.17, samples=58 lat (msec) : 10=3.65%, 20=25.52%, 50=45.05%, 100=21.48%, 250=4.30% cpu : usr=0.08%, sys=2.37%, ctx=1182, 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=181800: Fri Jan 16 06:23:55 2026 read: IOPS=12, BW=202KiB/s (207kB/s)(6032KiB/29829msec) clat (msec): min=4, max=159, avg=32.40, stdev=26.63 lat (msec): min=4, max=159, avg=32.40, stdev=26.63 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 70], 95.00th=[ 93], | 99.00th=[ 142], 99.50th=[ 148], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 31, max= 539, per=25.25%, avg=201.71, stdev=122.12, samples=59 iops : min= 1, max= 33, avg=11.88, stdev= 7.67, samples=59 write: IOPS=13, BW=210KiB/s (215kB/s)(6256KiB/29829msec); 0 zone resets clat (msec): min=10, max=196, avg=44.95, stdev=28.75 lat (msec): min=10, max=196, avg=44.96, stdev=28.75 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 52], 80.00th=[ 64], 90.00th=[ 79], 95.00th=[ 100], | 99.00th=[ 153], 99.50th=[ 190], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 62, max= 536, per=24.92%, avg=209.56, stdev=110.37, samples=59 iops : min= 3, max= 33, avg=12.37, stdev= 6.99, samples=59 lat (msec) : 10=3.65%, 20=23.96%, 50=47.27%, 100=21.48%, 250=3.65% cpu : usr=0.05%, sys=2.34%, ctx=1211, 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=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=800KiB/s (819kB/s), 192KiB/s-211KiB/s (197kB/s-216kB/s), io=23.4MiB (24.5MB), run=29691-29953msec WRITE: bw=841KiB/s (862kB/s), 203KiB/s-219KiB/s (208kB/s-224kB/s), io=24.6MiB (25.8MB), run=29691-29953msec 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=181816: Fri Jan 16 06:24:10 2026 read: IOPS=1, BW=1535KiB/s (1572kB/s)(7168KiB/4670msec) clat (usec): min=590, max=209903, avg=139558.15, stdev=67142.71 lat (usec): min=591, max=209904, avg=139559.60, stdev=67142.65 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[132645], | 30.00th=[137364], 40.00th=[137364], 50.00th=[143655], 60.00th=[170918], | 70.00th=[170918], 80.00th=[181404], 90.00th=[210764], 95.00th=[210764], | 99.00th=[210764], 99.50th=[210764], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 2027, max= 5171, per=89.23%, avg=3077.67, stdev=1812.88, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1096KiB/s (1123kB/s)(5120KiB/4670msec); 0 zone resets clat (msec): min=181, max=2197, avg=703.58, stdev=858.93 lat (msec): min=181, max=2197, avg=703.65, stdev=858.92 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 2027, max= 4096, per=63.40%, avg=3061.50, stdev=1463.00, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=8.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=12.32%, ctx=214, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181817: Fri Jan 16 06:24:10 2026 read: IOPS=0, BW=359KiB/s (368kB/s)(2048KiB/5701msec) clat (usec): min=1287, max=2229.5k, avg=1115373.92, stdev=1575556.05 lat (usec): min=1289, max=2229.5k, avg=1115376.02, stdev=1575556.46 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1287], 10.00th=[ 1287], | 20.00th=[ 1287], 30.00th=[ 1287], 40.00th=[ 1287], | 50.00th=[ 1287], 60.00th=[2231370], 70.00th=[2231370], | 80.00th=[2231370], 90.00th=[2231370], 95.00th=[2231370], | 99.00th=[2231370], 99.50th=[2231370], 99.90th=[2231370], | 99.95th=[2231370], 99.99th=[2231370] bw ( KiB/s): min= 1988, max= 2048, per=58.51%, avg=2018.00, stdev=42.43, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1796KiB/s (1839kB/s)(10.0MiB/5701msec); 0 zone resets clat (msec): min=64, max=593, avg=341.89, stdev=167.85 lat (msec): min=64, max=593, avg=342.06, stdev=167.83 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 203], | 30.00th=[ 218], 40.00th=[ 262], 50.00th=[ 313], 60.00th=[ 347], | 70.00th=[ 368], 80.00th=[ 489], 90.00th=[ 567], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1845, max= 6107, per=66.51%, avg=3211.80, stdev=1860.15, samples=5 iops : min= 1, max= 5, avg= 2.40, stdev= 1.67, samples=5 lat (msec) : 2=8.33%, 100=8.33%, 250=16.67%, 500=41.67%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=11.63%, ctx=529, 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=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=181818: Fri Jan 16 06:24:10 2026 read: IOPS=1, BW=1035KiB/s (1060kB/s)(6144KiB/5937msec) clat (usec): min=617, max=584604, avg=211831.81, stdev=248953.84 lat (usec): min=618, max=584605, avg=211834.04, stdev=248953.00 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 742], | 30.00th=[ 742], 40.00th=[ 2212], 50.00th=[ 2212], 60.00th=[295699], | 70.00th=[387974], 80.00th=[387974], 90.00th=[583009], 95.00th=[583009], | 99.00th=[583009], 99.50th=[583009], 99.90th=[583009], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 1845, max= 4079, per=72.54%, avg=2501.75, stdev=1055.59, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1035KiB/s (1060kB/s)(6144KiB/5937msec); 0 zone resets clat (msec): min=202, max=2588, avg=736.07, stdev=916.81 lat (msec): min=202, max=2588, avg=736.33, stdev=916.76 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 468], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 2027, max= 2048, per=42.18%, avg=2036.80, stdev= 7.63, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=16.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=7.88%, ctx=145, 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=181820: Fri Jan 16 06:24:10 2026 read: IOPS=0, BW=956KiB/s (979kB/s)(5120KiB/5353msec) clat (usec): min=975, max=454951, avg=191561.14, stdev=201459.10 lat (usec): min=977, max=454952, avg=191562.34, stdev=201459.04 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 979], 10.00th=[ 979], 20.00th=[ 979], | 30.00th=[ 3523], 40.00th=[ 3523], 50.00th=[164627], 60.00th=[164627], | 70.00th=[333448], 80.00th=[333448], 90.00th=[455082], 95.00th=[455082], | 99.00th=[455082], 99.50th=[455082], 99.90th=[455082], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 3690, max= 4096, per=100.00%, avg=3893.00, stdev=287.09, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1339KiB/s (1371kB/s)(7168KiB/5353msec); 0 zone resets clat (msec): min=98, max=2418, avg=607.86, stdev=823.84 lat (msec): min=99, max=2418, avg=607.94, stdev=823.83 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 146], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 262], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 718], 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= 1988, max= 4055, per=57.22%, avg=2763.20, stdev=1021.08, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=25.00%, 500=33.33%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=9.94%, ctx=207, 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=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=3450KiB/s (3532kB/s), 359KiB/s-1535KiB/s (368kB/s-1572kB/s), io=20.0MiB (20.0MB), run=4670-5937msec WRITE: bw=4829KiB/s (4945kB/s), 1035KiB/s-1796KiB/s (1060kB/s-1839kB/s), io=28.0MiB (29.4MB), run=4670-5937msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181819: Fri Jan 16 06:24:11 2026 read: IOPS=1, BW=1264KiB/s (1295kB/s)(7168KiB/5670msec) clat (msec): min=66, max=449, avg=214.89, stdev=138.14 lat (msec): min=66, max=449, avg=214.89, stdev=138.14 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 97], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 190], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 305], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1868, max= 4755, per=87.93%, avg=2678.50, stdev=1386.86, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=0, BW=903KiB/s (925kB/s)(5120KiB/5670msec); 0 zone resets clat (msec): min=331, max=1812, avg=801.01, stdev=607.88 lat (msec): min=339, max=1812, avg=802.83, stdev=606.21 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 1868, max= 2048, per=46.87%, avg=1998.50, stdev=87.10, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.55%, ctx=89, 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=181821: Fri Jan 16 06:24:11 2026 read: IOPS=0, BW=326KiB/s (333kB/s)(2048KiB/6290msec) clat (msec): min=214, max=2206, avg=1210.37, stdev=1408.94 lat (msec): min=214, max=2206, avg=1210.37, stdev=1408.94 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 2198], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 1868, max= 2039, per=64.13%, avg=1953.50, stdev=120.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1628KiB/s (1667kB/s)(10.0MiB/6290msec); 0 zone resets clat (msec): min=133, max=814, avg=375.77, stdev=224.62 lat (msec): min=133, max=814, avg=375.87, stdev=224.66 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 140], | 30.00th=[ 176], 40.00th=[ 194], 50.00th=[ 317], 60.00th=[ 414], | 70.00th=[ 477], 80.00th=[ 531], 90.00th=[ 567], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 2039, max= 4087, per=61.59%, avg=2626.00, stdev=998.06, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.07%, ctx=82, 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=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=181822: Fri Jan 16 06:24:11 2026 read: IOPS=0, BW=914KiB/s (936kB/s)(6144KiB/6723msec) clat (msec): min=103, max=736, avg=276.25, stdev=235.47 lat (msec): min=103, max=736, avg=276.25, stdev=235.47 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 243], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 2015, max= 2043, per=66.86%, avg=2036.60, stdev=12.20, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=914KiB/s (936kB/s)(6144KiB/6723msec); 0 zone resets clat (msec): min=259, max=2198, avg=823.78, stdev=723.60 lat (msec): min=259, max=2199, avg=824.12, stdev=723.75 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 651], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 1868, max= 2048, per=47.12%, avg=2009.33, stdev=70.21, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.63%, ctx=103, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181823: Fri Jan 16 06:24:11 2026 read: IOPS=0, BW=773KiB/s (792kB/s)(5120KiB/6622msec) clat (msec): min=81, max=215, avg=140.21, stdev=48.13 lat (msec): min=81, max=215, avg=140.21, stdev=48.13 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 140], 60.00th=[ 140], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 215], 95.00th=[ 215], | 99.00th=[ 215], 99.50th=[ 215], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 2043, max= 6131, per=100.00%, avg=4087.00, stdev=2890.65, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1082KiB/s (1108kB/s)(7168KiB/6622msec); 0 zone resets clat (msec): min=117, max=3205, avg=813.48, stdev=1110.16 lat (msec): min=117, max=3205, avg=813.57, stdev=1110.17 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 309], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 1028], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 2039, max= 4087, per=63.86%, avg=2723.00, stdev=1181.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.06%, sys=4.40%, ctx=98, 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=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=3046KiB/s (3119kB/s), 326KiB/s-1264KiB/s (333kB/s-1295kB/s), io=20.0MiB (20.0MB), run=5670-6723msec WRITE: bw=4265KiB/s (4367kB/s), 903KiB/s-1628KiB/s (925kB/s-1667kB/s), io=28.0MiB (29.4MB), run=5670-6723msec 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=181831: Fri Jan 16 06:24:24 2026 read: IOPS=1, BW=7293KiB/s (7468kB/s)(12.0MiB/1685msec) clat (msec): min=302, max=807, avg=506.06, stdev=266.22 lat (msec): min=302, max=807, avg=506.06, stdev=266.22 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 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= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, 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=6.53%, 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=181832: Fri Jan 16 06:24:24 2026 read: IOPS=0, BW=1206KiB/s (1235kB/s)(4096KiB/3397msec) clat (nsec): min=1306.0M, max=1306.0M, avg=1306011603.00, stdev= 0.00 lat (nsec): min=1306.0M, max=1306.0M, avg=1306014483.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 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= 7757, max= 7757, per=100.00%, avg=7757.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2412KiB/s (2469kB/s)(8192KiB/3397msec); 0 zone resets clat (msec): min=794, max=1047, avg=920.99, stdev=178.84 lat (msec): min=795, max=1047, avg=921.44, stdev=178.66 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 8159, max= 8159, per=84.58%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.86%, ctx=120, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181834: Fri Jan 16 06:24:24 2026 write: IOPS=1, BW=4234KiB/s (4336kB/s)(12.0MiB/2902msec); 0 zone resets clat (msec): min=380, max=1340, avg=941.03, stdev=499.77 lat (msec): min=381, max=1341, avg=941.33, stdev=499.78 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 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= 7757, max= 8159, per=82.50%, avg=7958.00, stdev=284.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.72%, ctx=62, 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=181837: Fri Jan 16 06:24:24 2026 write: IOPS=1, BW=4149KiB/s (4248kB/s)(12.0MiB/2962msec); 0 zone resets clat (msec): min=282, max=1465, avg=964.81, stdev=611.95 lat (msec): min=283, max=1466, avg=965.11, stdev=611.93 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7757, max= 7757, per=80.42%, avg=7757.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.07%, sys=4.22%, ctx=44, 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=4823KiB/s (4939kB/s), 1206KiB/s-7293KiB/s (1235kB/s-7468kB/s), io=16.0MiB (16.8MB), run=1685-3397msec WRITE: bw=9646KiB/s (9878kB/s), 2412KiB/s-4234KiB/s (2469kB/s-4336kB/s), io=32.0MiB (33.6MB), run=2902-3397msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181830: Fri Jan 16 06:24:24 2026 read: IOPS=1, BW=5103KiB/s (5225kB/s)(12.0MiB/2408msec) clat (msec): min=663, max=884, avg=758.92, stdev=113.58 lat (msec): min=663, max=886, avg=759.49, stdev=114.52 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7953, max= 8143, per=100.00%, avg=8048.00, stdev=134.35, 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=11.43%, ctx=289, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181833: Fri Jan 16 06:24:24 2026 read: IOPS=0, BW=1425KiB/s (1459kB/s)(4096KiB/2874msec) clat (nsec): min=824503k, max=824503k, avg=824503473.00, stdev= 0.00 lat (nsec): min=824506k, max=824506k, avg=824506086.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7953, max= 7953, per=100.00%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2850KiB/s (2919kB/s)(8192KiB/2874msec); 0 zone resets clat (msec): min=866, max=1043, avg=955.38, stdev=125.12 lat (msec): min=867, max=1044, avg=956.17, stdev=125.03 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 8143, max= 8143, per=82.80%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.63%, ctx=64, 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=181835: Fri Jan 16 06:24:24 2026 write: IOPS=0, BW=3688KiB/s (3776kB/s)(12.0MiB/3332msec); 0 zone resets clat (msec): min=298, max=1843, avg=1052.18, stdev=772.78 lat (msec): min=299, max=1846, avg=1053.50, stdev=774.43 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8094, max= 8143, per=82.56%, avg=8118.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.52%, ctx=38, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181836: Fri Jan 16 06:24:24 2026 write: IOPS=1, BW=4468KiB/s (4576kB/s)(12.0MiB/2750msec); 0 zone resets clat (msec): min=204, max=2095, avg=860.80, stdev=1070.25 lat (msec): min=205, max=2096, avg=861.16, stdev=1070.24 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 7599, max= 7937, per=78.99%, avg=7768.00, stdev=239.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.91%, ctx=61, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5701KiB/s (5838kB/s), 1425KiB/s-5103KiB/s (1459kB/s-5225kB/s), io=16.0MiB (16.8MB), run=2408-2874msec WRITE: bw=9834KiB/s (10.1MB/s), 2850KiB/s-4468KiB/s (2919kB/s-4576kB/s), io=32.0MiB (33.6MB), run=2750-3332msec