== sanity test 398b: DIO and buffer IO race ============== 06:11:19 (1787566279) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.30901 s, 9.5 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=180593: Mon Aug 24 06:13:16 2026 read: IOPS=15, BW=60.4KiB/s (61.8kB/s)(5992KiB/99217msec) clat (usec): min=34, max=217301, avg=35794.19, stdev=23687.57 lat (usec): min=34, max=217302, avg=35797.72, stdev=23687.54 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 8356], 10.00th=[ 13435], 20.00th=[ 18220], | 30.00th=[ 21890], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 42730], 80.00th=[ 50594], 90.00th=[ 64750], 95.00th=[ 77071], | 99.00th=[122160], 99.50th=[141558], 99.90th=[181404], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 15, max= 111, per=25.38%, avg=60.40, stdev=20.73, samples=194 iops : min= 3, max= 27, avg=14.45, stdev= 5.22, samples=194 write: IOPS=15, BW=63.5KiB/s (64.0kB/s)(6296KiB/99217msec); 0 zone resets clat (usec): min=869, max=730481, avg=28734.65, stdev=33493.82 lat (usec): min=869, max=730483, avg=28737.54, stdev=33496.78 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1254], 10.00th=[ 1762], 20.00th=[ 3359], | 30.00th=[ 5866], 40.00th=[ 14091], 50.00th=[ 20841], 60.00th=[ 27657], | 70.00th=[ 36439], 80.00th=[ 50070], 90.00th=[ 66847], 95.00th=[ 85459], | 99.00th=[124257], 99.50th=[141558], 99.90th=[173016], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 7, max= 152, per=25.23%, avg=63.08, stdev=25.46, samples=195 iops : min= 1, max= 38, avg=15.13, stdev= 6.38, samples=195 lat (usec) : 50=0.26%, 100=1.56%, 250=0.16%, 500=0.10%, 1000=0.07% lat (msec) : 2=6.22%, 4=5.57%, 10=7.85%, 20=14.97%, 50=43.03% lat (msec) : 100=17.87%, 250=2.31%, 750=0.03% cpu : usr=0.08%, sys=6.21%, ctx=6811, 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=180594: Mon Aug 24 06:13:17 2026 read: IOPS=14, BW=59.1KiB/s (60.5kB/s)(5940KiB/100504msec) clat (usec): min=42, max=208384, avg=35960.41, stdev=24043.19 lat (usec): min=42, max=208385, avg=35961.53, stdev=24043.18 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9372], 10.00th=[ 13435], 20.00th=[ 17957], | 30.00th=[ 22152], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 42730], 80.00th=[ 51119], 90.00th=[ 64750], 95.00th=[ 77071], | 99.00th=[126354], 99.50th=[152044], 99.90th=[198181], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 15, max= 136, per=24.62%, avg=58.58, stdev=22.41, samples=197 iops : min= 3, max= 34, avg=14.01, stdev= 5.63, samples=197 write: IOPS=15, BW=63.2KiB/s (64.7kB/s)(6348KiB/100504msec); 0 zone resets clat (usec): min=909, max=836736, avg=29477.30, stdev=36052.98 lat (usec): min=910, max=836737, avg=29482.00, stdev=36051.14 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1221], 10.00th=[ 1663], 20.00th=[ 3294], | 30.00th=[ 5997], 40.00th=[ 14222], 50.00th=[ 21890], 60.00th=[ 29230], | 70.00th=[ 36963], 80.00th=[ 47973], 90.00th=[ 68682], 95.00th=[ 88605], | 99.00th=[132645], 99.50th=[164627], 99.90th=[208667], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 159, per=24.95%, avg=62.37, stdev=25.78, samples=197 iops : min= 1, max= 39, avg=14.95, stdev= 6.46, samples=197 lat (usec) : 50=0.23%, 100=1.53%, 250=0.23%, 500=0.07%, 1000=0.26% lat (msec) : 2=6.15%, 4=6.02%, 10=6.74%, 20=15.04%, 50=43.78% lat (msec) : 100=17.38%, 250=2.54%, 1000=0.03% cpu : usr=0.07%, sys=6.26%, ctx=6752, 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=180595: Mon Aug 24 06:13:17 2026 read: IOPS=15, BW=60.9KiB/s (62.4kB/s)(6028KiB/98991msec) clat (usec): min=32, max=252503, avg=35647.18, stdev=25791.21 lat (usec): min=33, max=252504, avg=35648.38, stdev=25791.16 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 1614], 10.00th=[ 13173], 20.00th=[ 17695], | 30.00th=[ 21103], 40.00th=[ 25297], 50.00th=[ 29754], 60.00th=[ 34866], | 70.00th=[ 41681], 80.00th=[ 49546], 90.00th=[ 66323], 95.00th=[ 83362], | 99.00th=[130548], 99.50th=[160433], 99.90th=[240124], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7, max= 136, per=25.38%, avg=60.40, stdev=23.35, samples=194 iops : min= 1, max= 34, avg=14.46, stdev= 5.86, samples=194 write: IOPS=15, BW=63.2KiB/s (64.8kB/s)(6260KiB/98991msec); 0 zone resets clat (usec): min=911, max=832015, avg=28697.97, stdev=36216.57 lat (usec): min=913, max=832016, avg=28700.05, stdev=36216.65 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1254], 10.00th=[ 1680], 20.00th=[ 2966], | 30.00th=[ 5473], 40.00th=[ 12256], 50.00th=[ 20579], 60.00th=[ 27919], | 70.00th=[ 36963], 80.00th=[ 49021], 90.00th=[ 65274], 95.00th=[ 85459], | 99.00th=[139461], 99.50th=[181404], 99.90th=[208667], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 15, max= 151, per=24.99%, avg=62.48, stdev=26.09, samples=194 iops : min= 3, max= 37, avg=14.99, stdev= 6.54, samples=194 lat (usec) : 50=0.46%, 100=1.33%, 250=0.52%, 750=0.07%, 1000=0.13% lat (msec) : 2=6.25%, 4=6.45%, 10=7.29%, 20=15.72%, 50=42.22% lat (msec) : 100=17.02%, 250=2.47%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.95%, ctx=6726, 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=180596: Mon Aug 24 06:13:17 2026 read: IOPS=15, BW=60.4KiB/s (61.9kB/s)(6052KiB/100171msec) clat (usec): min=31, max=263478, avg=35874.85, stdev=25205.54 lat (usec): min=31, max=263480, avg=35878.21, stdev=25206.78 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 174], 10.00th=[ 12518], 20.00th=[ 17171], | 30.00th=[ 21365], 40.00th=[ 25560], 50.00th=[ 30540], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 51643], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[116917], 99.50th=[132645], 99.90th=[219153], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 135, per=25.20%, avg=59.97, stdev=22.51, samples=197 iops : min= 1, max= 33, avg=14.35, stdev= 5.65, samples=197 write: IOPS=15, BW=62.3KiB/s (63.7kB/s)(6236KiB/100171msec); 0 zone resets clat (usec): min=814, max=733790, avg=29221.56, stdev=34705.47 lat (usec): min=815, max=733791, avg=29226.78, stdev=34705.17 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1254], 10.00th=[ 1762], 20.00th=[ 3261], | 30.00th=[ 5997], 40.00th=[ 13304], 50.00th=[ 21365], 60.00th=[ 27132], | 70.00th=[ 36439], 80.00th=[ 48497], 90.00th=[ 68682], 95.00th=[ 90702], | 99.00th=[125305], 99.50th=[149947], 99.90th=[187696], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 15, max= 167, per=24.67%, avg=61.66, stdev=25.36, samples=197 iops : min= 3, max= 41, avg=14.77, stdev= 6.40, samples=197 lat (usec) : 50=0.62%, 100=1.63%, 250=0.26%, 500=0.07%, 1000=0.16% lat (msec) : 2=5.99%, 4=5.79%, 10=7.29%, 20=15.72%, 50=42.06% lat (msec) : 100=17.55%, 250=2.80%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=6.23%, ctx=6705, 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=239KiB/s (245kB/s), 59.1KiB/s-60.9KiB/s (60.5kB/s-62.4kB/s), io=23.4MiB (24.6MB), run=98991-100504msec WRITE: bw=250KiB/s (256kB/s), 62.3KiB/s-63.5KiB/s (63.7kB/s-64.0kB/s), io=24.6MiB (25.7MB), run=98991-100504msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180599: Mon Aug 24 06:14:00 2026 read: IOPS=10, BW=41.8KiB/s (42.8kB/s)(5992KiB/143324msec) clat (msec): min=5, max=879, avg=37.29, stdev=37.57 lat (msec): min=5, max=879, avg=37.29, stdev=37.57 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 103], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 239], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 128, per=24.96%, avg=41.68, stdev=25.07, samples=280 iops : min= 1, max= 32, avg= 9.80, stdev= 6.31, samples=280 write: IOPS=10, BW=43.9KiB/s (44.0kB/s)(6296KiB/143324msec); 0 zone resets clat (msec): min=8, max=310, avg=55.47, stdev=36.61 lat (msec): min=8, max=310, avg=55.48, stdev=36.61 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 63], 80.00th=[ 78], 90.00th=[ 104], 95.00th=[ 123], | 99.00th=[ 192], 99.50th=[ 236], 99.90th=[ 296], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 132, per=24.86%, avg=43.50, stdev=23.08, samples=282 iops : min= 1, max= 33, avg=10.26, stdev= 5.83, samples=282 lat (msec) : 10=2.41%, 20=16.28%, 50=48.24%, 100=24.97%, 250=7.91% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=1.97%, ctx=4640, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180600: Mon Aug 24 06:14:00 2026 read: IOPS=10, BW=41.7KiB/s (42.7kB/s)(5940KiB/142481msec) clat (msec): min=5, max=786, avg=37.64, stdev=37.53 lat (msec): min=5, max=786, avg=37.64, stdev=37.53 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 80], 95.00th=[ 104], | 99.00th=[ 171], 99.50th=[ 192], 99.90th=[ 255], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 135, per=25.12%, avg=41.95, stdev=24.69, samples=277 iops : min= 1, max= 33, avg= 9.87, stdev= 6.21, samples=277 write: IOPS=11, BW=44.6KiB/s (45.6kB/s)(6348KiB/142481msec); 0 zone resets clat (msec): min=12, max=314, avg=54.49, stdev=36.90 lat (msec): min=12, max=314, avg=54.49, stdev=36.90 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 63], 80.00th=[ 77], 90.00th=[ 97], 95.00th=[ 122], | 99.00th=[ 209], 99.50th=[ 239], 99.90th=[ 305], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 120, per=25.35%, avg=44.37, stdev=23.24, samples=280 iops : min= 1, max= 30, avg=10.48, stdev= 5.86, samples=280 lat (msec) : 10=2.67%, 20=17.35%, 50=48.08%, 100=24.48%, 250=7.19% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.05%, sys=1.99%, ctx=4531, 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=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=180601: Mon Aug 24 06:14:00 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(6028KiB/142210msec) clat (msec): min=5, max=258, avg=36.90, stdev=30.35 lat (msec): min=5, max=258, avg=36.90, stdev=30.36 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 78], 95.00th=[ 103], | 99.00th=[ 148], 99.50th=[ 167], 99.90th=[ 213], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 7, max= 134, per=25.24%, avg=42.14, stdev=23.93, samples=279 iops : min= 1, max= 33, avg= 9.91, stdev= 6.03, samples=279 write: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6260KiB/142210msec); 0 zone resets clat (msec): min=11, max=803, avg=55.25, stdev=39.82 lat (msec): min=11, max=803, avg=55.26, stdev=39.82 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 63], 80.00th=[ 75], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 201], 99.50th=[ 215], 99.90th=[ 271], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 144, per=25.00%, avg=43.75, stdev=23.17, samples=279 iops : min= 1, max= 36, avg=10.32, stdev= 5.83, samples=279 lat (msec) : 10=2.51%, 20=16.31%, 50=48.27%, 100=25.20%, 250=7.62% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.05%, sys=1.96%, ctx=4616, 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=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=180602: Mon Aug 24 06:14:00 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(6052KiB/141890msec) clat (msec): min=5, max=227, avg=36.79, stdev=32.21 lat (msec): min=5, max=227, avg=36.80, stdev=32.21 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 104], | 99.00th=[ 165], 99.50th=[ 188], 99.90th=[ 215], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 7, max= 167, per=25.82%, avg=43.12, stdev=25.80, samples=274 iops : min= 1, max= 41, avg=10.16, stdev= 6.49, samples=274 write: IOPS=10, BW=43.9KiB/s (45.0kB/s)(6236KiB/141890msec); 0 zone resets clat (msec): min=11, max=777, avg=55.21, stdev=39.91 lat (msec): min=11, max=777, avg=55.21, stdev=39.91 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 63], 80.00th=[ 78], 90.00th=[ 100], 95.00th=[ 122], | 99.00th=[ 192], 99.50th=[ 207], 99.90th=[ 309], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 120, per=25.10%, avg=43.92, stdev=22.61, samples=277 iops : min= 1, max= 30, avg=10.36, stdev= 5.69, samples=277 lat (msec) : 10=3.29%, 20=17.45%, 50=46.84%, 100=24.93%, 250=7.29% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.05%, sys=1.96%, ctx=4574, 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=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=168KiB/s (172kB/s), 41.7KiB/s-42.7KiB/s (42.7kB/s-43.7kB/s), io=23.4MiB (24.6MB), run=141890-143324msec WRITE: bw=175KiB/s (180kB/s), 43.9KiB/s-44.6KiB/s (44.0kB/s-45.6kB/s), io=24.6MiB (25.7MB), run=141890-143324msec 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=180642: Mon Aug 24 06:14:40 2026 read: IOPS=12, BW=195KiB/s (200kB/s)(5920KiB/30342msec) clat (usec): min=31, max=163115, avg=42005.28, stdev=28392.16 lat (usec): min=31, max=163116, avg=42013.25, stdev=28390.99 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 297], 20.00th=[ 20317], | 30.00th=[ 26346], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 52691], 80.00th=[ 61604], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[135267], 99.50th=[145753], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 60, max= 415, per=24.70%, avg=194.88, stdev=86.34, samples=60 iops : min= 3, max= 25, avg=11.47, stdev= 5.47, samples=60 write: IOPS=13, BW=210KiB/s (215kB/s)(6368KiB/30342msec); 0 zone resets clat (usec): min=1375, max=253638, avg=36049.92, stdev=36493.77 lat (usec): min=1377, max=253641, avg=36052.20, stdev=36494.11 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2024], 10.00th=[ 2900], 20.00th=[ 6128], | 30.00th=[ 9634], 40.00th=[ 18220], 50.00th=[ 25560], 60.00th=[ 32900], | 70.00th=[ 45876], 80.00th=[ 62129], 90.00th=[ 83362], 95.00th=[108528], | 99.00th=[170918], 99.50th=[183501], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 501, per=25.64%, avg=212.81, stdev=83.84, samples=59 iops : min= 1, max= 31, avg=12.59, stdev= 5.33, samples=59 lat (usec) : 50=0.52%, 100=3.91%, 250=0.26%, 500=0.13% lat (msec) : 2=2.34%, 4=5.47%, 10=8.07%, 20=11.07%, 50=38.41% lat (msec) : 100=24.74%, 250=4.95%, 500=0.13% cpu : usr=0.05%, sys=5.33%, ctx=1649, 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=180644: Mon Aug 24 06:14:40 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(5744KiB/29729msec) clat (usec): min=38, max=248008, avg=43538.78, stdev=28143.77 lat (usec): min=38, max=248008, avg=43540.97, stdev=28143.31 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 15270], 20.00th=[ 23725], | 30.00th=[ 28443], 40.00th=[ 34341], 50.00th=[ 39584], 60.00th=[ 44827], | 70.00th=[ 53216], 80.00th=[ 61604], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[135267], 99.50th=[147850], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 62, max= 382, per=25.21%, avg=198.91, stdev=70.42, samples=56 iops : min= 3, max= 23, avg=11.71, stdev= 4.45, samples=56 write: IOPS=13, BW=220KiB/s (225kB/s)(6544KiB/29729msec); 0 zone resets clat (usec): min=1336, max=225321, avg=33354.64, stdev=36025.75 lat (usec): min=1337, max=225322, avg=33359.21, stdev=36023.92 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1893], 10.00th=[ 2442], 20.00th=[ 4686], | 30.00th=[ 7767], 40.00th=[ 13829], 50.00th=[ 22676], 60.00th=[ 29754], | 70.00th=[ 40633], 80.00th=[ 57410], 90.00th=[ 81265], 95.00th=[106431], | 99.00th=[173016], 99.50th=[191890], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 62, max= 414, per=26.63%, avg=221.02, stdev=78.54, samples=57 iops : min= 3, max= 25, avg=13.11, stdev= 4.98, samples=57 lat (usec) : 50=0.26%, 100=2.99%, 250=0.13%, 500=0.26% lat (msec) : 2=3.52%, 4=6.12%, 10=9.38%, 20=10.03%, 50=37.89% lat (msec) : 100=24.35%, 250=5.08% cpu : usr=0.07%, sys=5.80%, ctx=1685, 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=180646: Mon Aug 24 06:14:40 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(6256KiB/30216msec) clat (usec): min=29, max=149883, avg=42447.05, stdev=27087.77 lat (usec): min=30, max=149885, avg=42448.96, stdev=27088.61 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 12911], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 32113], 50.00th=[ 36963], 60.00th=[ 44303], | 70.00th=[ 51119], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[ 95945], | 99.00th=[127402], 99.50th=[145753], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 31, max= 476, per=26.37%, avg=208.05, stdev=80.46, samples=59 iops : min= 1, max= 29, avg=12.29, stdev= 5.10, samples=59 write: IOPS=12, BW=200KiB/s (204kB/s)(6032KiB/30216msec); 0 zone resets clat (usec): min=1353, max=181217, avg=35736.72, stdev=33608.32 lat (usec): min=1355, max=181219, avg=35738.78, stdev=33608.26 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2180], 10.00th=[ 3261], 20.00th=[ 6194], | 30.00th=[ 10683], 40.00th=[ 19530], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 43779], 80.00th=[ 60556], 90.00th=[ 91751], 95.00th=[107480], | 99.00th=[137364], 99.50th=[154141], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 63, max= 407, per=23.70%, avg=196.68, stdev=78.96, samples=59 iops : min= 3, max= 25, avg=11.58, stdev= 5.06, samples=59 lat (usec) : 50=0.52%, 100=3.39%, 250=0.65%, 500=0.13%, 750=0.13% lat (msec) : 2=2.08%, 4=4.30%, 10=7.68%, 20=8.46%, 50=43.88% lat (msec) : 100=23.96%, 250=4.82% cpu : usr=0.06%, sys=5.43%, ctx=1704, 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=180648: Mon Aug 24 06:14:40 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(6032KiB/29365msec) clat (usec): min=42, max=190643, avg=42686.48, stdev=29583.57 lat (usec): min=42, max=190644, avg=42688.12, stdev=29584.28 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 60], 10.00th=[ 74], 20.00th=[ 21365], | 30.00th=[ 27657], 40.00th=[ 33162], 50.00th=[ 38536], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 63701], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[141558], 99.50th=[158335], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 94, max= 407, per=26.40%, avg=208.26, stdev=76.62, samples=57 iops : min= 5, max= 25, avg=12.30, stdev= 4.83, samples=57 write: IOPS=13, BW=213KiB/s (218kB/s)(6256KiB/29365msec); 0 zone resets clat (usec): min=1536, max=192380, avg=32807.72, stdev=32925.85 lat (usec): min=1538, max=192383, avg=32814.64, stdev=32923.44 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2245], 10.00th=[ 3163], 20.00th=[ 5145], | 30.00th=[ 7832], 40.00th=[ 13829], 50.00th=[ 21627], 60.00th=[ 32900], | 70.00th=[ 43254], 80.00th=[ 55837], 90.00th=[ 74974], 95.00th=[ 96994], | 99.00th=[158335], 99.50th=[177210], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 30, max= 474, per=25.69%, avg=213.19, stdev=93.23, samples=58 iops : min= 1, max= 29, avg=12.62, stdev= 5.86, samples=58 lat (usec) : 50=0.39%, 100=5.60%, 250=0.13%, 500=0.26% lat (msec) : 2=1.95%, 4=5.47%, 10=10.29%, 20=8.33%, 50=39.45% lat (msec) : 100=23.70%, 250=4.43% cpu : usr=0.05%, sys=5.48%, ctx=1659, 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=789KiB/s (808kB/s), 193KiB/s-207KiB/s (198kB/s-212kB/s), io=23.4MiB (24.5MB), run=29365-30342msec WRITE: bw=831KiB/s (850kB/s), 200KiB/s-220KiB/s (204kB/s-225kB/s), io=24.6MiB (25.8MB), run=29365-30342msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180641: Mon Aug 24 06:14:52 2026 read: IOPS=8, BW=142KiB/s (145kB/s)(5920KiB/41811msec) clat (msec): min=5, max=197, avg=42.72, stdev=33.86 lat (msec): min=5, max=197, avg=42.72, stdev=33.86 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 59], 90.00th=[ 92], 95.00th=[ 114], | 99.00th=[ 167], 99.50th=[ 190], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 384, per=24.77%, avg=140.68, stdev=79.65, samples=81 iops : min= 1, max= 24, avg= 8.00, stdev= 5.06, samples=81 write: IOPS=9, BW=152KiB/s (156kB/s)(6368KiB/41811msec); 0 zone resets clat (msec): min=9, max=303, avg=65.13, stdev=41.98 lat (msec): min=9, max=303, avg=65.14, stdev=41.98 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 64], | 70.00th=[ 77], 80.00th=[ 89], 90.00th=[ 118], 95.00th=[ 157], | 99.00th=[ 224], 99.50th=[ 262], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 413, per=25.24%, avg=150.96, stdev=79.77, samples=82 iops : min= 1, max= 25, avg= 8.65, stdev= 5.07, samples=82 lat (msec) : 10=0.91%, 20=11.59%, 50=46.61%, 100=28.65%, 250=11.98% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.63%, ctx=1118, 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=180643: Mon Aug 24 06:14:52 2026 read: IOPS=8, BW=136KiB/s (140kB/s)(5744KiB/42124msec) clat (msec): min=6, max=221, avg=43.44, stdev=35.83 lat (msec): min=6, max=221, avg=43.44, stdev=35.83 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 94], 95.00th=[ 126], | 99.00th=[ 182], 99.50th=[ 213], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 30, max= 378, per=25.32%, avg=143.83, stdev=79.71, samples=78 iops : min= 1, max= 23, avg= 8.19, stdev= 5.07, samples=78 write: IOPS=9, BW=155KiB/s (159kB/s)(6544KiB/42124msec); 0 zone resets clat (msec): min=12, max=378, avg=63.90, stdev=43.32 lat (msec): min=12, max=378, avg=63.90, stdev=43.32 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 62], | 70.00th=[ 71], 80.00th=[ 91], 90.00th=[ 117], 95.00th=[ 157], | 99.00th=[ 209], 99.50th=[ 243], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 30, max= 415, per=25.78%, avg=154.19, stdev=90.38, samples=83 iops : min= 1, max= 25, avg= 8.84, stdev= 5.74, samples=83 lat (msec) : 10=0.91%, 20=11.46%, 50=48.96%, 100=26.69%, 250=11.72% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.74%, ctx=1100, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180645: Mon Aug 24 06:14:52 2026 read: IOPS=9, BW=149KiB/s (152kB/s)(6256KiB/42057msec) clat (msec): min=7, max=278, avg=44.10, stdev=37.97 lat (msec): min=7, max=278, avg=44.11, stdev=37.97 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 44], 80.00th=[ 62], 90.00th=[ 95], 95.00th=[ 131], | 99.00th=[ 192], 99.50th=[ 203], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 512, per=26.87%, avg=152.62, stdev=97.67, samples=81 iops : min= 1, max= 32, avg= 8.74, stdev= 6.21, samples=81 write: IOPS=8, BW=143KiB/s (147kB/s)(6032KiB/42057msec); 0 zone resets clat (msec): min=14, max=271, avg=65.15, stdev=40.16 lat (msec): min=14, max=271, avg=65.16, stdev=40.16 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 64], | 70.00th=[ 82], 80.00th=[ 100], 90.00th=[ 122], 95.00th=[ 140], | 99.00th=[ 190], 99.50th=[ 266], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 380, per=24.09%, avg=144.07, stdev=75.91, samples=82 iops : min= 1, max= 23, avg= 8.21, stdev= 4.82, samples=82 lat (msec) : 10=0.78%, 20=11.98%, 50=48.18%, 100=25.00%, 250=13.67% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.63%, ctx=1143, 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=180647: Mon Aug 24 06:14:52 2026 read: IOPS=8, BW=143KiB/s (147kB/s)(6032KiB/42108msec) clat (msec): min=6, max=281, avg=45.35, stdev=40.13 lat (msec): min=6, max=281, avg=45.36, stdev=40.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 61], 90.00th=[ 100], 95.00th=[ 134], | 99.00th=[ 199], 99.50th=[ 209], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 413, per=25.92%, avg=147.25, stdev=90.73, samples=80 iops : min= 1, max= 25, avg= 8.41, stdev= 5.75, samples=80 write: IOPS=9, BW=149KiB/s (152kB/s)(6256KiB/42108msec); 0 zone resets clat (msec): min=10, max=377, avg=63.02, stdev=43.32 lat (msec): min=10, max=377, avg=63.02, stdev=43.32 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 241], 99.50th=[ 271], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 349, per=24.78%, avg=148.16, stdev=82.41, samples=83 iops : min= 1, max= 21, avg= 8.46, stdev= 5.23, samples=83 lat (msec) : 10=1.30%, 20=12.50%, 50=47.14%, 100=26.95%, 250=11.72% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.71%, ctx=1139, 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=569KiB/s (582kB/s), 136KiB/s-149KiB/s (140kB/s-152kB/s), io=23.4MiB (24.5MB), run=41811-42124msec WRITE: bw=598KiB/s (613kB/s), 143KiB/s-155KiB/s (147kB/s-159kB/s), io=24.6MiB (25.8MB), run=41811-42124msec 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=180664: Mon Aug 24 06:15:04 2026 read: IOPS=1, BW=2012KiB/s (2061kB/s)(7168KiB/3562msec) clat (msec): min=81, max=433, avg=211.31, stdev=111.68 lat (msec): min=81, max=433, avg=211.31, stdev=111.68 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 138], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 207], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 243], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 1442, max= 4079, per=54.48%, avg=2860.50, stdev=1395.61, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1437KiB/s (1472kB/s)(5120KiB/3562msec); 0 zone resets clat (msec): min=151, max=917, avg=377.20, stdev=308.66 lat (msec): min=151, max=917, avg=379.87, stdev=307.23 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 251], 60.00th=[ 251], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1882, max= 3893, per=35.34%, avg=2598.00, stdev=1123.59, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 1000=8.33% cpu : usr=0.03%, sys=19.04%, ctx=241, 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=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=180665: Mon Aug 24 06:15:04 2026 read: IOPS=0, BW=542KiB/s (555kB/s)(2048KiB/3779msec) clat (msec): min=8, max=118, avg=63.53, stdev=77.92 lat (msec): min=8, max=118, avg=63.53, stdev=77.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 9], | 30.00th=[ 9], 40.00th=[ 9], 50.00th=[ 9], 60.00th=[ 120], | 70.00th=[ 120], 80.00th=[ 120], 90.00th=[ 120], 95.00th=[ 120], | 99.00th=[ 120], 99.50th=[ 120], 99.90th=[ 120], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 1426, max= 1882, per=31.50%, avg=1654.00, stdev=322.44, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2710KiB/s (2775kB/s)(10.0MiB/3779msec); 0 zone resets clat (msec): min=149, max=890, avg=362.93, stdev=206.53 lat (msec): min=149, max=890, avg=363.01, stdev=206.52 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 184], | 30.00th=[ 243], 40.00th=[ 279], 50.00th=[ 342], 60.00th=[ 355], | 70.00th=[ 372], 80.00th=[ 384], 90.00th=[ 435], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1426, max= 3764, per=29.99%, avg=2204.83, stdev=799.43, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 10=8.33%, 250=33.33%, 500=50.00%, 1000=8.33% cpu : usr=0.00%, sys=19.61%, ctx=237, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180666: Mon Aug 24 06:15:04 2026 read: IOPS=1, BW=1575KiB/s (1613kB/s)(6144KiB/3900msec) clat (usec): min=507, max=542083, avg=137331.37, stdev=209528.61 lat (usec): min=508, max=542083, avg=137332.25, stdev=209528.42 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 1336], | 30.00th=[ 1336], 40.00th=[ 1582], 50.00th=[ 1582], 60.00th=[135267], | 70.00th=[143655], 80.00th=[143655], 90.00th=[541066], 95.00th=[541066], | 99.00th=[541066], 99.50th=[541066], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 1882, max= 4039, per=47.61%, avg=2499.75, stdev=1028.84, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1575KiB/s (1613kB/s)(6144KiB/3900msec); 0 zone resets clat (msec): min=250, max=935, avg=504.28, stdev=300.79 lat (msec): min=250, max=935, avg=504.34, stdev=300.79 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 409], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1882, max= 4087, per=37.27%, avg=2740.00, stdev=1020.50, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 250=16.67%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=15.54%, ctx=214, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180667: Mon Aug 24 06:15:04 2026 read: IOPS=1, BW=1577KiB/s (1615kB/s)(5120KiB/3247msec) clat (usec): min=526, max=225488, avg=92544.69, stdev=106842.18 lat (usec): min=527, max=225489, avg=92545.77, stdev=106842.21 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 5211], 40.00th=[ 5211], 50.00th=[ 42206], 60.00th=[ 42206], | 70.00th=[189793], 80.00th=[189793], 90.00th=[225444], 95.00th=[225444], | 99.00th=[225444], 99.50th=[225444], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 7529, max= 7529, per=100.00%, avg=7529.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2208KiB/s (2261kB/s)(7168KiB/3247msec); 0 zone resets clat (msec): min=116, max=851, avg=371.10, stdev=272.41 lat (msec): min=116, max=851, avg=371.29, stdev=272.36 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 129], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 305], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 625], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 2019, max= 3893, per=36.05%, avg=2650.33, stdev=1076.23, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 50=8.33%, 250=41.67%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.03%, sys=18.79%, ctx=220, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5251KiB/s (5377kB/s), 542KiB/s-2012KiB/s (555kB/s-2061kB/s), io=20.0MiB (20.0MB), run=3247-3900msec WRITE: bw=7352KiB/s (7528kB/s), 1437KiB/s-2710KiB/s (1472kB/s-2775kB/s), io=28.0MiB (29.4MB), run=3247-3900msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180660: Mon Aug 24 06:15:05 2026 read: IOPS=2, BW=2251KiB/s (2305kB/s)(7168KiB/3184msec) clat (msec): min=68, max=381, avg=213.31, stdev=112.35 lat (msec): min=68, max=381, avg=213.31, stdev=112.35 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 79], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 230], 60.00th=[ 234], | 70.00th=[ 234], 80.00th=[ 300], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 1825, max= 4079, per=61.40%, avg=2918.25, stdev=1160.89, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1608KiB/s (1647kB/s)(5120KiB/3184msec); 0 zone resets clat (msec): min=129, max=767, avg=322.14, stdev=267.52 lat (msec): min=129, max=767, avg=322.27, stdev=267.53 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 2019, max= 4031, per=38.03%, avg=2531.00, stdev=1000.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=50.00%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=6.57%, ctx=99, 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=180661: Mon Aug 24 06:15:05 2026 read: IOPS=0, BW=475KiB/s (487kB/s)(2048KiB/4308msec) clat (msec): min=100, max=315, avg=207.87, stdev=151.78 lat (msec): min=103, max=315, avg=209.43, stdev=149.58 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 101], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1861, max= 2035, per=40.98%, avg=1948.00, stdev=123.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2377KiB/s (2434kB/s)(10.0MiB/4308msec); 0 zone resets clat (msec): min=130, max=1540, avg=384.89, stdev=419.07 lat (msec): min=130, max=1540, avg=385.00, stdev=419.07 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 150], | 30.00th=[ 155], 40.00th=[ 159], 50.00th=[ 271], 60.00th=[ 300], | 70.00th=[ 359], 80.00th=[ 372], 90.00th=[ 414], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 1861, max= 4096, per=40.42%, avg=2689.67, stdev=1084.88, samples=6 iops : min= 1, max= 4, avg= 2.00, stdev= 1.26, samples=6 lat (msec) : 250=41.67%, 500=50.00%, 2000=8.33% cpu : usr=0.02%, sys=9.36%, ctx=183, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180662: Mon Aug 24 06:15:05 2026 read: IOPS=1, BW=2016KiB/s (2065kB/s)(6144KiB/3047msec) clat (msec): min=102, max=464, avg=234.16, stdev=127.07 lat (msec): min=102, max=464, avg=234.16, stdev=127.07 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 209], 50.00th=[ 209], 60.00th=[ 245], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1825, max= 4031, per=52.15%, avg=2478.50, stdev=1039.49, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=2016KiB/s (2065kB/s)(6144KiB/3047msec); 0 zone resets clat (msec): min=95, max=496, avg=257.92, stdev=140.07 lat (msec): min=95, max=496, avg=258.04, stdev=140.04 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 292], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 1825, max= 4079, per=37.23%, avg=2477.75, stdev=1070.89, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=6.40%, ctx=71, 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=180663: Mon Aug 24 06:15:05 2026 read: IOPS=1, BW=1550KiB/s (1587kB/s)(5120KiB/3304msec) clat (msec): min=139, max=618, avg=346.19, stdev=213.78 lat (msec): min=139, max=618, avg=346.19, stdev=213.78 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1882, max= 4039, per=55.20%, avg=2623.67, stdev=1226.19, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2169KiB/s (2222kB/s)(7168KiB/3304msec); 0 zone resets clat (msec): min=98, max=385, avg=209.40, stdev=117.37 lat (msec): min=98, max=385, avg=209.49, stdev=117.35 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 113], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 136], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 334], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 1882, max= 4196, per=40.64%, avg=2704.33, stdev=1294.08, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=6.30%, ctx=89, 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=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=4754KiB/s (4868kB/s), 475KiB/s-2251KiB/s (487kB/s-2305kB/s), io=20.0MiB (20.0MB), run=3047-4308msec WRITE: bw=6656KiB/s (6815kB/s), 1608KiB/s-2377KiB/s (1647kB/s-2434kB/s), io=28.0MiB (29.4MB), run=3047-4308msec 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=180674: Mon Aug 24 06:15:18 2026 read: IOPS=1, BW=4993KiB/s (5113kB/s)(12.0MiB/2461msec) clat (msec): min=735, max=828, avg=767.58, stdev=52.80 lat (msec): min=735, max=828, avg=767.58, stdev=52.80 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 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= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=12.44%, ctx=378, 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=180675: Mon Aug 24 06:15:18 2026 read: IOPS=0, BW=1557KiB/s (1594kB/s)(4096KiB/2631msec) clat (nsec): min=743543k, max=743543k, avg=743543428.00, stdev= 0.00 lat (nsec): min=743546k, max=743546k, avg=743545673.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 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= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3114KiB/s (3188kB/s)(8192KiB/2631msec); 0 zone resets clat (msec): min=557, max=1097, avg=827.90, stdev=381.79 lat (msec): min=558, max=1098, avg=828.60, stdev=382.28 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8078, max= 8078, per=81.33%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=7.00%, ctx=181, 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=180676: Mon Aug 24 06:15:18 2026 write: IOPS=0, BW=3725KiB/s (3814kB/s)(12.0MiB/3299msec); 0 zone resets clat (msec): min=334, max=1968, avg=1072.59, stdev=827.95 lat (msec): min=335, max=1968, avg=1072.88, stdev=827.86 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 8159, max= 8175, per=82.23%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.76%, ctx=92, 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=180677: Mon Aug 24 06:15:18 2026 write: IOPS=1, BW=4298KiB/s (4401kB/s)(12.0MiB/2859msec); 0 zone resets clat (msec): min=225, max=1986, avg=865.18, stdev=974.37 lat (msec): min=225, max=1987, avg=865.64, stdev=974.56 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 5893, max= 8159, per=70.74%, avg=7026.00, stdev=1602.30, 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=4.41%, ctx=98, 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=6227KiB/s (6377kB/s), 1557KiB/s-4993KiB/s (1594kB/s-5113kB/s), io=16.0MiB (16.8MB), run=2461-2631msec WRITE: bw=9933KiB/s (10.2MB/s), 3114KiB/s-4298KiB/s (3188kB/s-4401kB/s), io=32.0MiB (33.6MB), run=2631-3299msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180678: Mon Aug 24 06:15:18 2026 read: IOPS=1, BW=4255KiB/s (4357kB/s)(12.0MiB/2888msec) clat (msec): min=213, max=1426, avg=895.45, stdev=620.12 lat (msec): min=213, max=1426, avg=895.46, stdev=620.12 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7861, max= 7984, per=100.00%, avg=7922.50, stdev=86.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.39%, ctx=63, 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=180679: Mon Aug 24 06:15:18 2026 read: IOPS=0, BW=1290KiB/s (1321kB/s)(4096KiB/3174msec) clat (nsec): min=1216.6M, max=1216.6M, avg=1216593540.00, stdev= 0.00 lat (nsec): min=1216.6M, max=1216.6M, avg=1216595615.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1217], 5.00th=[ 1217], 10.00th=[ 1217], 20.00th=[ 1217], | 30.00th=[ 1217], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7861, max= 7861, per=100.00%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2581KiB/s (2643kB/s)(8192KiB/3174msec); 0 zone resets clat (msec): min=490, max=1389, avg=939.66, stdev=635.85 lat (msec): min=490, max=1389, avg=939.96, stdev=636.01 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7787, max= 7787, per=82.92%, avg=7787.00, 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=0.03%, sys=2.96%, ctx=47, 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=180680: Mon Aug 24 06:15:18 2026 write: IOPS=0, BW=3522KiB/s (3606kB/s)(12.0MiB/3489msec); 0 zone resets clat (msec): min=154, max=2166, avg=1096.95, stdev=1012.15 lat (msec): min=154, max=2167, avg=1097.41, stdev=1012.09 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7984, max= 7984, per=85.02%, avg=7984.00, 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=2.64%, ctx=50, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180681: Mon Aug 24 06:15:18 2026 write: IOPS=1, BW=4228KiB/s (4330kB/s)(12.0MiB/2906msec); 0 zone resets clat (msec): min=474, max=1593, avg=920.18, stdev=593.02 lat (msec): min=474, max=1593, avg=921.25, stdev=592.62 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 6291, max= 7861, per=75.35%, avg=7076.00, stdev=1110.16, 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=3.68%, ctx=70, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5162KiB/s (5286kB/s), 1290KiB/s-4255KiB/s (1321kB/s-4357kB/s), io=16.0MiB (16.8MB), run=2888-3174msec WRITE: bw=9392KiB/s (9617kB/s), 2581KiB/s-4228KiB/s (2643kB/s-4330kB/s), io=32.0MiB (33.6MB), run=2906-3489msec