== sanity test 398b: DIO and buffer IO race ============== 01:08:49 (1786424929) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.01376 s, 8.4 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=179070: Tue Aug 11 01:11:08 2026 read: IOPS=12, BW=50.6KiB/s (51.9kB/s)(5992KiB/118321msec) clat (usec): min=42, max=296659, avg=42827.81, stdev=28339.40 lat (usec): min=43, max=296660, avg=42829.58, stdev=28340.18 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 906], 10.00th=[ 15926], 20.00th=[ 22152], | 30.00th=[ 26608], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 43779], | 70.00th=[ 51643], 80.00th=[ 62129], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[131597], 99.50th=[164627], 99.90th=[235930], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 103, per=25.14%, avg=50.03, stdev=18.27, samples=233 iops : min= 1, max= 25, avg=11.86, stdev= 4.60, samples=233 write: IOPS=13, BW=53.2KiB/s (54.5kB/s)(6296KiB/118321msec); 0 zone resets clat (usec): min=1047, max=244203, avg=34304.01, stdev=34567.04 lat (usec): min=1049, max=244205, avg=34306.82, stdev=34569.74 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1565], 10.00th=[ 2245], 20.00th=[ 4555], | 30.00th=[ 7701], 40.00th=[ 17433], 50.00th=[ 25297], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 58983], 90.00th=[ 81265], 95.00th=[102237], | 99.00th=[147850], 99.50th=[177210], 99.90th=[223347], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 7, max= 119, per=25.45%, avg=52.94, stdev=22.33, samples=232 iops : min= 1, max= 29, avg=12.59, stdev= 5.62, samples=232 lat (usec) : 50=0.55%, 100=1.66%, 250=0.13%, 750=0.03%, 1000=0.07% lat (msec) : 2=4.20%, 4=5.18%, 10=8.11%, 20=9.64%, 50=41.96% lat (msec) : 100=23.99%, 250=4.46%, 500=0.03% cpu : usr=0.07%, sys=5.64%, ctx=6765, 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=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=179071: Tue Aug 11 01:11:08 2026 read: IOPS=12, BW=49.5KiB/s (50.7kB/s)(5940KiB/120082msec) clat (usec): min=38, max=261952, avg=43860.44, stdev=29042.45 lat (usec): min=39, max=261953, avg=43861.96, stdev=29042.33 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 11731], 10.00th=[ 16909], 20.00th=[ 22414], | 30.00th=[ 26870], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 62129], 90.00th=[ 78119], 95.00th=[ 94897], | 99.00th=[145753], 99.50th=[173016], 99.90th=[221250], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 5, max= 103, per=24.58%, avg=48.92, stdev=19.99, samples=237 iops : min= 1, max= 25, avg=11.59, stdev= 5.02, samples=237 write: IOPS=13, BW=52.9KiB/s (54.1kB/s)(6348KiB/120082msec); 0 zone resets clat (usec): min=1095, max=332438, avg=34532.18, stdev=36030.40 lat (usec): min=1096, max=332439, avg=34538.08, stdev=36029.63 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1631], 10.00th=[ 2540], 20.00th=[ 4490], | 30.00th=[ 8094], 40.00th=[ 17171], 50.00th=[ 24773], 60.00th=[ 33162], | 70.00th=[ 43254], 80.00th=[ 57410], 90.00th=[ 82314], 95.00th=[107480], | 99.00th=[145753], 99.50th=[175113], 99.90th=[312476], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 135, per=25.08%, avg=52.17, stdev=21.66, samples=237 iops : min= 1, max= 33, avg=12.41, stdev= 5.43, samples=237 lat (usec) : 50=0.39%, 100=1.40%, 250=0.23%, 750=0.03% lat (msec) : 2=4.04%, 4=5.14%, 10=8.11%, 20=10.29%, 50=41.60% lat (msec) : 100=23.70%, 250=4.95%, 500=0.13% cpu : usr=0.07%, sys=5.68%, ctx=6968, 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=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=179072: Tue Aug 11 01:11:08 2026 read: IOPS=12, BW=50.8KiB/s (52.0kB/s)(6028KiB/118671msec) clat (usec): min=36, max=227664, avg=42936.26, stdev=28876.42 lat (usec): min=36, max=227666, avg=42951.06, stdev=28876.80 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 8586], 10.00th=[ 15926], 20.00th=[ 21627], | 30.00th=[ 26608], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 51119], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[147850], 99.50th=[179307], 99.90th=[225444], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 119, per=25.23%, avg=50.21, stdev=19.19, samples=234 iops : min= 1, max= 29, avg=11.92, stdev= 4.84, samples=234 write: IOPS=13, BW=52.8KiB/s (54.0kB/s)(6260KiB/118671msec); 0 zone resets clat (usec): min=1058, max=241875, avg=34316.86, stdev=35005.42 lat (usec): min=1060, max=241877, avg=34320.58, stdev=35003.87 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1467], 10.00th=[ 2057], 20.00th=[ 3785], | 30.00th=[ 6915], 40.00th=[ 14484], 50.00th=[ 24773], 60.00th=[ 34866], | 70.00th=[ 44827], 80.00th=[ 60556], 90.00th=[ 81265], 95.00th=[103285], | 99.00th=[143655], 99.50th=[168821], 99.90th=[219153], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 7, max= 143, per=25.12%, avg=52.25, stdev=23.67, samples=234 iops : min= 1, max= 35, avg=12.42, stdev= 5.92, samples=234 lat (usec) : 50=0.55%, 100=1.30%, 250=0.39%, 500=0.03%, 750=0.03% lat (msec) : 2=4.85%, 4=5.63%, 10=7.94%, 20=10.19%, 50=40.33% lat (msec) : 100=23.89%, 250=4.85% cpu : usr=0.07%, sys=5.70%, ctx=6729, 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=179073: Tue Aug 11 01:11:08 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(6052KiB/120543msec) clat (usec): min=37, max=188733, avg=43151.76, stdev=27431.31 lat (usec): min=37, max=188734, avg=43153.23, stdev=27431.28 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 8356], 10.00th=[ 16450], 20.00th=[ 21890], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 50594], 80.00th=[ 61080], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[133694], 99.50th=[149947], 99.90th=[185598], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 7, max= 103, per=25.20%, avg=50.15, stdev=18.71, samples=236 iops : min= 1, max= 25, avg=11.90, stdev= 4.69, samples=236 write: IOPS=12, BW=51.7KiB/s (52.0kB/s)(6236KiB/120543msec); 0 zone resets clat (usec): min=1148, max=274705, avg=35350.03, stdev=36864.26 lat (usec): min=1149, max=274706, avg=35353.57, stdev=36866.38 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1500], 10.00th=[ 2278], 20.00th=[ 4359], | 30.00th=[ 8029], 40.00th=[ 15533], 50.00th=[ 25035], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 61080], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[158335], 99.50th=[185598], 99.90th=[265290], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 134, per=24.70%, avg=51.38, stdev=23.38, samples=237 iops : min= 1, max= 33, avg=12.22, stdev= 5.90, samples=237 lat (usec) : 50=0.42%, 100=1.66%, 250=0.20%, 750=0.03% lat (msec) : 2=4.30%, 4=5.21%, 10=8.04%, 20=10.81%, 50=40.27% lat (msec) : 100=23.86%, 250=5.14%, 500=0.07% cpu : usr=0.06%, sys=5.72%, ctx=7027, 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=199KiB/s (204kB/s), 49.5KiB/s-50.8KiB/s (50.7kB/s-52.0kB/s), io=23.4MiB (24.6MB), run=118321-120543msec WRITE: bw=209KiB/s (214kB/s), 51.7KiB/s-53.2KiB/s (52.0kB/s-54.5kB/s), io=24.6MiB (25.7MB), run=118321-120543msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179065: Tue Aug 11 01:11:48 2026 read: IOPS=9, BW=37.4KiB/s (38.3kB/s)(5992KiB/160211msec) clat (msec): min=5, max=800, avg=41.70, stdev=41.58 lat (msec): min=5, max=801, avg=41.71, stdev=41.58 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 91], 95.00th=[ 121], | 99.00th=[ 188], 99.50th=[ 213], 99.90th=[ 284], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 143, per=25.45%, avg=37.67, stdev=25.74, samples=310 iops : min= 1, max= 35, avg= 8.78, stdev= 6.47, samples=310 write: IOPS=9, BW=39.3KiB/s (40.2kB/s)(6296KiB/160211msec); 0 zone resets clat (msec): min=11, max=390, avg=61.84, stdev=41.68 lat (msec): min=11, max=390, avg=61.84, stdev=41.68 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 60], | 70.00th=[ 73], 80.00th=[ 90], 90.00th=[ 117], 95.00th=[ 144], | 99.00th=[ 205], 99.50th=[ 230], 99.90th=[ 321], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 120, per=25.20%, avg=39.07, stdev=23.48, samples=314 iops : min= 1, max= 30, avg= 9.12, stdev= 5.91, samples=314 lat (msec) : 10=1.79%, 20=15.01%, 50=46.52%, 100=25.23%, 250=11.13% lat (msec) : 500=0.29%, 1000=0.03% cpu : usr=0.06%, sys=2.27%, ctx=5049, 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=179066: Tue Aug 11 01:11:48 2026 read: IOPS=9, BW=36.8KiB/s (37.7kB/s)(5940KiB/161468msec) clat (msec): min=6, max=761, avg=43.27, stdev=43.09 lat (msec): min=6, max=761, avg=43.27, stdev=43.09 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 96], 95.00th=[ 122], | 99.00th=[ 188], 99.50th=[ 230], 99.90th=[ 292], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 143, per=25.21%, avg=37.32, stdev=26.19, samples=309 iops : min= 1, max= 35, avg= 8.69, stdev= 6.58, samples=309 write: IOPS=9, BW=39.3KiB/s (40.3kB/s)(6348KiB/161468msec); 0 zone resets clat (msec): min=12, max=344, avg=60.99, stdev=42.40 lat (msec): min=12, max=344, avg=60.99, stdev=42.40 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 120], 95.00th=[ 142], | 99.00th=[ 224], 99.50th=[ 245], 99.90th=[ 313], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 119, per=25.14%, avg=38.96, stdev=23.48, samples=316 iops : min= 1, max= 29, avg= 9.10, stdev= 5.90, samples=316 lat (msec) : 10=1.92%, 20=14.75%, 50=46.91%, 100=23.99%, 250=12.08% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.06%, sys=2.38%, ctx=5145, 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=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=179067: Tue Aug 11 01:11:48 2026 read: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6028KiB/161122msec) clat (msec): min=5, max=297, avg=42.28, stdev=37.53 lat (msec): min=5, max=297, avg=42.28, stdev=37.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 91], 95.00th=[ 120], | 99.00th=[ 184], 99.50th=[ 222], 99.90th=[ 255], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 120, per=25.28%, avg=37.41, stdev=24.39, samples=314 iops : min= 1, max= 30, avg= 8.71, stdev= 6.13, samples=314 write: IOPS=9, BW=38.9KiB/s (39.8kB/s)(6260KiB/161122msec); 0 zone resets clat (msec): min=12, max=795, avg=61.98, stdev=47.11 lat (msec): min=12, max=795, avg=61.98, stdev=47.11 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 74], 80.00th=[ 92], 90.00th=[ 118], 95.00th=[ 144], | 99.00th=[ 211], 99.50th=[ 259], 99.90th=[ 384], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 112, per=25.07%, avg=38.86, stdev=24.12, samples=314 iops : min= 1, max= 28, avg= 9.07, stdev= 6.07, samples=314 lat (msec) : 10=1.76%, 20=14.84%, 50=47.46%, 100=23.63%, 250=11.91% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.06%, sys=2.29%, ctx=5169, 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=179068: Tue Aug 11 01:11:48 2026 read: IOPS=9, BW=37.8KiB/s (38.7kB/s)(6052KiB/160036msec) clat (msec): min=6, max=325, avg=41.96, stdev=38.95 lat (msec): min=6, max=325, avg=41.96, stdev=38.95 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 92], 95.00th=[ 126], | 99.00th=[ 184], 99.50th=[ 226], 99.90th=[ 300], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 7, max= 142, per=26.02%, avg=38.51, stdev=26.23, samples=307 iops : min= 1, max= 35, avg= 8.98, stdev= 6.59, samples=307 write: IOPS=9, BW=38.0KiB/s (39.9kB/s)(6236KiB/160036msec); 0 zone resets clat (msec): min=12, max=796, avg=61.67, stdev=44.72 lat (msec): min=12, max=796, avg=61.67, stdev=44.71 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 121], 95.00th=[ 144], | 99.00th=[ 201], 99.50th=[ 239], 99.90th=[ 305], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 111, per=25.10%, avg=38.90, stdev=23.11, samples=313 iops : min= 1, max= 27, avg= 9.09, stdev= 5.82, samples=313 lat (msec) : 10=1.66%, 20=15.43%, 50=46.52%, 100=24.48%, 250=11.59% lat (msec) : 500=0.29%, 1000=0.03% cpu : usr=0.06%, sys=2.41%, ctx=5151, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=149KiB/s (152kB/s), 36.8KiB/s-37.8KiB/s (37.7kB/s-38.7kB/s), io=23.4MiB (24.6MB), run=160036-161468msec WRITE: bw=156KiB/s (159kB/s), 38.9KiB/s-39.3KiB/s (39.8kB/s-40.3kB/s), io=24.6MiB (25.7MB), run=160036-161468msec 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=179117: Tue Aug 11 01:12:24 2026 read: IOPS=13, BW=222KiB/s (227kB/s)(5920KiB/26647msec) clat (usec): min=40, max=152850, avg=37755.96, stdev=26142.97 lat (usec): min=40, max=152851, avg=37761.09, stdev=26141.17 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 59], 10.00th=[ 97], 20.00th=[ 18482], | 30.00th=[ 23462], 40.00th=[ 29230], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 46400], 80.00th=[ 56361], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[119014], 99.50th=[143655], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 94, max= 415, per=25.79%, avg=219.17, stdev=65.24, samples=52 iops : min= 5, max= 25, avg=12.92, stdev= 4.08, samples=52 write: IOPS=14, BW=239KiB/s (245kB/s)(6368KiB/26647msec); 0 zone resets clat (usec): min=1620, max=166315, avg=31650.28, stdev=31000.06 lat (usec): min=1622, max=166316, avg=31675.98, stdev=30989.12 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2933], 10.00th=[ 4146], 20.00th=[ 5800], | 30.00th=[ 9765], 40.00th=[ 15401], 50.00th=[ 21890], 60.00th=[ 28705], | 70.00th=[ 39060], 80.00th=[ 52691], 90.00th=[ 74974], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[160433], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 31, max= 416, per=26.67%, avg=238.44, stdev=86.96, samples=52 iops : min= 1, max= 26, avg=14.13, stdev= 5.51, samples=52 lat (usec) : 50=0.26%, 100=4.82%, 250=1.17%, 500=0.26% lat (msec) : 2=0.65%, 4=4.04%, 10=11.59%, 20=12.63%, 50=41.15% lat (msec) : 100=19.66%, 250=3.78% cpu : usr=0.09%, sys=7.35%, ctx=1771, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179118: Tue Aug 11 01:12:24 2026 read: IOPS=13, BW=211KiB/s (216kB/s)(5744KiB/27229msec) clat (usec): min=35, max=150045, avg=40126.83, stdev=25480.93 lat (usec): min=35, max=150046, avg=40128.00, stdev=25480.96 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 13698], 20.00th=[ 22152], | 30.00th=[ 27132], 40.00th=[ 31851], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 47973], 80.00th=[ 57934], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[121111], 99.50th=[147850], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 64, max= 349, per=25.19%, avg=214.13, stdev=70.69, samples=52 iops : min= 4, max= 21, avg=12.60, stdev= 4.37, samples=52 write: IOPS=15, BW=240KiB/s (246kB/s)(6544KiB/27229msec); 0 zone resets clat (usec): min=1811, max=152148, avg=30915.64, stdev=30091.02 lat (usec): min=1813, max=152150, avg=30922.16, stdev=30095.17 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 2999], 10.00th=[ 3687], 20.00th=[ 6063], | 30.00th=[ 8586], 40.00th=[ 14484], 50.00th=[ 21365], 60.00th=[ 30802], | 70.00th=[ 38011], 80.00th=[ 47973], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[137364], 99.50th=[141558], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 93, max= 412, per=26.65%, avg=238.25, stdev=71.47, samples=53 iops : min= 5, max= 25, avg=14.11, stdev= 4.49, samples=53 lat (usec) : 50=0.39%, 100=3.26%, 250=0.39%, 500=0.13%, 750=0.13% lat (msec) : 2=0.78%, 4=5.47%, 10=10.94%, 20=11.33%, 50=45.05% lat (msec) : 100=19.14%, 250=2.99% cpu : usr=0.10%, sys=7.26%, ctx=1823, 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=179119: Tue Aug 11 01:12:24 2026 read: IOPS=13, BW=222KiB/s (227kB/s)(6256KiB/28168msec) clat (usec): min=48, max=192599, avg=40513.90, stdev=27547.97 lat (usec): min=48, max=192600, avg=40520.38, stdev=27549.37 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 72], 10.00th=[ 10683], 20.00th=[ 20841], | 30.00th=[ 26346], 40.00th=[ 31851], 50.00th=[ 36439], 60.00th=[ 41681], | 70.00th=[ 47449], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[141558], 99.50th=[168821], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 93, max= 383, per=25.83%, avg=219.53, stdev=70.78, samples=55 iops : min= 5, max= 23, avg=12.95, stdev= 4.43, samples=55 write: IOPS=13, BW=214KiB/s (219kB/s)(6032KiB/28168msec); 0 zone resets clat (usec): min=1655, max=169200, avg=32115.74, stdev=30143.41 lat (usec): min=1657, max=169202, avg=32118.24, stdev=30143.31 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 17], 50.00th=[ 24], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 79], 95.00th=[ 95], | 99.00th=[ 130], 99.50th=[ 155], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 63, max= 542, per=23.39%, avg=209.15, stdev=93.36, samples=55 iops : min= 3, max= 33, avg=12.29, stdev= 5.90, samples=55 lat (usec) : 50=0.13%, 100=3.39%, 250=0.91%, 500=0.26% lat (msec) : 2=0.39%, 4=4.69%, 10=10.42%, 20=11.07%, 50=43.62% lat (msec) : 100=21.61%, 250=3.52% cpu : usr=0.09%, sys=7.29%, ctx=1882, 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=179120: Tue Aug 11 01:12:24 2026 read: IOPS=13, BW=223KiB/s (228kB/s)(6032KiB/27084msec) clat (usec): min=43, max=168329, avg=39590.34, stdev=27345.39 lat (usec): min=44, max=168329, avg=39592.35, stdev=27344.62 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 62], 10.00th=[ 92], 20.00th=[ 20317], | 30.00th=[ 24773], 40.00th=[ 31065], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 49021], 80.00th=[ 60556], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[116917], 99.50th=[139461], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 63, max= 479, per=26.03%, avg=221.23, stdev=80.96, samples=53 iops : min= 3, max= 29, avg=13.06, stdev= 5.06, samples=53 write: IOPS=14, BW=231KiB/s (237kB/s)(6256KiB/27084msec); 0 zone resets clat (usec): min=1675, max=196962, avg=30520.58, stdev=31979.83 lat (usec): min=1677, max=196964, avg=30522.75, stdev=31979.77 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2507], 10.00th=[ 3425], 20.00th=[ 5276], | 30.00th=[ 8029], 40.00th=[ 13042], 50.00th=[ 20579], 60.00th=[ 26346], | 70.00th=[ 34341], 80.00th=[ 50594], 90.00th=[ 74974], 95.00th=[ 98042], | 99.00th=[149947], 99.50th=[189793], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 93, max= 479, per=25.88%, avg=231.40, stdev=82.30, samples=53 iops : min= 5, max= 29, avg=13.68, stdev= 5.17, samples=53 lat (usec) : 50=0.39%, 100=4.95%, 250=1.04%, 500=0.39%, 750=0.13% lat (msec) : 2=1.43%, 4=4.82%, 10=10.81%, 20=10.68%, 50=41.15% lat (msec) : 100=20.96%, 250=3.26% cpu : usr=0.07%, sys=7.15%, ctx=1815, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=850KiB/s (871kB/s), 211KiB/s-223KiB/s (216kB/s-228kB/s), io=23.4MiB (24.5MB), run=26647-28168msec WRITE: bw=895KiB/s (916kB/s), 214KiB/s-240KiB/s (219kB/s-246kB/s), io=24.6MiB (25.8MB), run=26647-28168msec fio: pid=179112, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179112: Tue Aug 11 01:12:33 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(4336KiB/32615msec) clat (msec): min=8, max=202, avg=46.75, stdev=36.17 lat (msec): min=8, max=202, avg=46.75, stdev=36.17 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 101], 95.00th=[ 128], | 99.00th=[ 178], 99.50th=[ 186], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 31, max= 447, per=22.11%, avg=132.00, stdev=71.21, samples=63 iops : min= 1, max= 27, avg= 7.41, stdev= 4.47, samples=63 write: IOPS=8, BW=143KiB/s (146kB/s)(4656KiB/32615msec); 0 zone resets clat (msec): min=17, max=224, avg=67.93, stdev=41.20 lat (msec): min=17, max=224, avg=67.93, stdev=41.20 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 81], 80.00th=[ 96], 90.00th=[ 131], 95.00th=[ 161], | 99.00th=[ 194], 99.50th=[ 201], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 31, max= 351, per=22.62%, avg=141.81, stdev=73.86, samples=64 iops : min= 1, max= 21, avg= 8.03, stdev= 4.66, samples=64 lat (msec) : 10=0.53%, 20=7.82%, 50=47.42%, 100=30.20%, 250=13.85% cpu : usr=0.03%, sys=2.58%, ctx=920, majf=0, minf=18 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=272,291,0,0 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=179113: Tue Aug 11 01:12:33 2026 read: IOPS=9, BW=154KiB/s (157kB/s)(5744KiB/37363msec) clat (msec): min=6, max=246, avg=41.02, stdev=38.39 lat (msec): min=6, max=246, avg=41.02, stdev=38.39 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 89], 95.00th=[ 129], | 99.00th=[ 186], 99.50th=[ 236], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 447, per=26.11%, avg=155.85, stdev=105.82, samples=73 iops : min= 1, max= 27, avg= 8.95, stdev= 6.71, samples=73 write: IOPS=10, BW=175KiB/s (179kB/s)(6544KiB/37363msec); 0 zone resets clat (msec): min=14, max=219, avg=55.00, stdev=38.90 lat (msec): min=14, max=219, avg=55.00, stdev=38.90 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 64], 80.00th=[ 83], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 188], 99.50th=[ 197], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 509, per=27.80%, avg=174.30, stdev=105.36, samples=74 iops : min= 1, max= 31, avg=10.11, stdev= 6.70, samples=74 lat (msec) : 10=2.21%, 20=15.10%, 50=52.21%, 100=19.27%, 250=11.20% cpu : usr=0.04%, sys=2.60%, ctx=1328, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179114: Tue Aug 11 01:12:33 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(6256KiB/37410msec) clat (msec): min=6, max=223, avg=40.18, stdev=35.04 lat (msec): min=6, max=223, avg=40.18, stdev=35.04 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 85], 95.00th=[ 122], | 99.00th=[ 176], 99.50th=[ 224], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 30, max= 509, per=28.44%, avg=169.78, stdev=118.04, samples=73 iops : min= 1, max= 31, avg= 9.82, stdev= 7.49, samples=73 write: IOPS=10, BW=161KiB/s (165kB/s)(6032KiB/37410msec); 0 zone resets clat (msec): min=14, max=284, avg=57.42, stdev=42.53 lat (msec): min=14, max=284, avg=57.43, stdev=42.53 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 66], 80.00th=[ 87], 90.00th=[ 116], 95.00th=[ 144], | 99.00th=[ 220], 99.50th=[ 275], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 63, max= 414, per=25.82%, avg=161.90, stdev=97.38, samples=73 iops : min= 3, max= 25, avg= 9.33, stdev= 6.16, samples=73 lat (msec) : 10=1.43%, 20=17.84%, 50=49.22%, 100=20.44%, 250=10.81% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=2.63%, ctx=1392, 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=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=179115: Tue Aug 11 01:12:33 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(6032KiB/37008msec) clat (msec): min=5, max=184, avg=39.53, stdev=32.48 lat (msec): min=5, max=184, avg=39.53, stdev=32.48 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 87], 95.00th=[ 112], | 99.00th=[ 159], 99.50th=[ 178], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 31, max= 480, per=27.36%, avg=163.32, stdev=97.45, samples=72 iops : min= 1, max= 30, avg= 9.40, stdev= 6.19, samples=72 write: IOPS=10, BW=169KiB/s (173kB/s)(6256KiB/37008msec); 0 zone resets clat (msec): min=10, max=272, avg=56.20, stdev=39.64 lat (msec): min=10, max=272, avg=56.21, stdev=39.64 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 52], | 70.00th=[ 64], 80.00th=[ 83], 90.00th=[ 111], 95.00th=[ 132], | 99.00th=[ 192], 99.50th=[ 271], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 442, per=26.93%, avg=168.82, stdev=101.19, samples=73 iops : min= 1, max= 27, avg= 9.75, stdev= 6.39, samples=73 lat (msec) : 10=1.30%, 20=18.49%, 50=46.88%, 100=23.57%, 250=9.51% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.79%, ctx=1312, 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=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=598KiB/s (612kB/s), 133KiB/s-167KiB/s (136kB/s-171kB/s), io=21.8MiB (22.9MB), run=32615-37410msec WRITE: bw=628KiB/s (643kB/s), 143KiB/s-175KiB/s (146kB/s-179kB/s), io=22.9MiB (24.1MB), run=32615-37410msec 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=179135: Tue Aug 11 01:12:48 2026 read: IOPS=1, BW=1483KiB/s (1519kB/s)(7168KiB/4832msec) clat (usec): min=526, max=1871.6k, avg=438191.25, stdev=639996.79 lat (usec): min=528, max=1871.6k, avg=438192.53, stdev=639996.72 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], | 20.00th=[ 200279], 30.00th=[ 210764], 40.00th=[ 210764], | 50.00th=[ 212861], 60.00th=[ 229639], 70.00th=[ 229639], | 80.00th=[ 341836], 90.00th=[1870660], 95.00th=[1870660], | 99.00th=[1870660], 99.50th=[1870660], 99.90th=[1870660], | 99.95th=[1870660], 99.99th=[1870660] bw ( KiB/s): min= 2000, max= 4071, per=72.41%, avg=2777.00, stdev=977.07, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1060KiB/s (1085kB/s)(5120KiB/4832msec); 0 zone resets clat (msec): min=194, max=494, avg=344.85, stdev=139.67 lat (msec): min=194, max=494, avg=345.21, stdev=139.48 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1988, max= 4055, per=49.93%, avg=2681.00, stdev=1189.93, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=8.96%, ctx=233, 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=179136: Tue Aug 11 01:12:48 2026 read: IOPS=0, BW=384KiB/s (393kB/s)(2048KiB/5340msec) clat (msec): min=153, max=334, avg=244.11, stdev=128.34 lat (msec): min=153, max=334, avg=244.11, stdev=128.34 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 1508, max= 2023, per=46.04%, avg=1765.50, stdev=364.16, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1918KiB/s (1964kB/s)(10.0MiB/5340msec); 0 zone resets clat (msec): min=144, max=1019, avg=477.14, stdev=325.91 lat (msec): min=144, max=1019, avg=477.22, stdev=325.91 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 171], | 30.00th=[ 203], 40.00th=[ 313], 50.00th=[ 326], 60.00th=[ 338], | 70.00th=[ 617], 80.00th=[ 659], 90.00th=[ 986], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1988, max= 4079, per=56.55%, avg=3036.00, stdev=1111.28, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=9.20%, ctx=143, 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=179137: Tue Aug 11 01:12:48 2026 read: IOPS=1, BW=1163KiB/s (1190kB/s)(6144KiB/5285msec) clat (msec): min=6, max=392, avg=226.11, stdev=128.63 lat (msec): min=6, max=393, avg=226.11, stdev=128.63 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 236], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2043, max= 4071, per=87.70%, avg=3363.33, stdev=1144.43, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1163KiB/s (1190kB/s)(6144KiB/5285msec); 0 zone resets clat (msec): min=244, max=1290, avg=613.58, stdev=404.36 lat (msec): min=244, max=1291, avg=613.68, stdev=404.38 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 535], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 1988, max= 4000, per=45.00%, avg=2416.20, stdev=885.65, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 10=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=8.97%, ctx=157, 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=179138: Tue Aug 11 01:12:48 2026 read: IOPS=1, BW=1123KiB/s (1150kB/s)(5120KiB/4561msec) clat (usec): min=408, max=1302.9k, avg=424893.55, stdev=506419.70 lat (usec): min=409, max=1302.9k, avg=424894.69, stdev=506419.71 clat percentiles (usec): | 1.00th=[ 408], 5.00th=[ 408], 10.00th=[ 408], | 20.00th=[ 408], 30.00th=[ 221250], 40.00th=[ 221250], | 50.00th=[ 267387], 60.00th=[ 267387], 70.00th=[ 333448], | 80.00th=[ 333448], 90.00th=[1300235], 95.00th=[1300235], | 99.00th=[1300235], 99.50th=[1300235], 99.90th=[1300235], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 1988, max= 4055, per=70.21%, avg=2692.67, stdev=1180.05, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1572KiB/s (1609kB/s)(7168KiB/4561msec); 0 zone resets clat (msec): min=136, max=557, avg=335.08, stdev=146.09 lat (msec): min=136, max=557, avg=335.15, stdev=146.09 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 186], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 326], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 451], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1712, max= 4000, per=42.74%, avg=2294.83, stdev=844.20, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (usec) : 500=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=11.07%, ctx=166, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3835KiB/s (3927kB/s), 384KiB/s-1483KiB/s (393kB/s-1519kB/s), io=20.0MiB (20.0MB), run=4561-5340msec WRITE: bw=5369KiB/s (5498kB/s), 1060KiB/s-1918KiB/s (1085kB/s-1964kB/s), io=28.0MiB (29.4MB), run=4561-5340msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179139: Tue Aug 11 01:12:48 2026 read: IOPS=1, BW=1335KiB/s (1367kB/s)(7168KiB/5371msec) clat (msec): min=96, max=843, avg=446.40, stdev=278.34 lat (msec): min=96, max=843, avg=446.40, stdev=278.34 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 155], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 435], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 743], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1610, max= 3900, per=64.23%, avg=2312.80, stdev=904.79, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=953KiB/s (976kB/s)(5120KiB/5371msec); 0 zone resets clat (msec): min=132, max=635, avg=419.34, stdev=229.06 lat (msec): min=132, max=635, avg=419.42, stdev=229.05 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1899, max= 4079, per=49.81%, avg=2511.00, stdev=1047.25, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=33.33%, 1000=8.33% cpu : usr=0.00%, sys=4.02%, ctx=105, 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=179140: Tue Aug 11 01:12:48 2026 read: IOPS=0, BW=360KiB/s (369kB/s)(2048KiB/5687msec) clat (msec): min=137, max=187, avg=162.41, stdev=35.36 lat (msec): min=137, max=187, avg=162.41, stdev=35.36 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 1464, max= 1996, per=48.04%, avg=1730.00, stdev=376.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1801KiB/s (1844kB/s)(10.0MiB/5687msec); 0 zone resets clat (msec): min=155, max=824, avg=512.78, stdev=222.08 lat (msec): min=155, max=824, avg=512.87, stdev=222.08 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 163], | 30.00th=[ 439], 40.00th=[ 460], 50.00th=[ 498], 60.00th=[ 567], | 70.00th=[ 609], 80.00th=[ 684], 90.00th=[ 726], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1899, max= 2039, per=39.11%, avg=1971.71, stdev=58.85, samples=7 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=7 lat (msec) : 250=33.33%, 500=25.00%, 750=33.33%, 1000=8.33% cpu : usr=0.05%, sys=6.09%, ctx=94, 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=179141: Tue Aug 11 01:12:48 2026 read: IOPS=1, BW=1107KiB/s (1133kB/s)(6144KiB/5552msec) clat (msec): min=102, max=768, avg=333.02, stdev=258.93 lat (msec): min=102, max=768, avg=333.02, stdev=258.93 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 342], | 70.00th=[ 489], 80.00th=[ 489], 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= 1996, max= 3842, per=68.79%, avg=2477.00, stdev=910.19, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1107KiB/s (1133kB/s)(6144KiB/5552msec); 0 zone resets clat (msec): min=284, max=1053, avg=580.09, stdev=309.39 lat (msec): min=284, max=1053, avg=580.19, stdev=309.42 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 651], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1404, max= 2039, per=37.02%, avg=1866.00, stdev=263.81, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=41.67%, 750=8.33%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=2.40%, ctx=56, 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=179142: Tue Aug 11 01:12:48 2026 read: IOPS=1, BW=1030KiB/s (1054kB/s)(5120KiB/4972msec) clat (msec): min=100, max=324, avg=205.60, stdev=85.46 lat (msec): min=100, max=324, avg=205.60, stdev=85.46 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 3992, max= 4079, per=100.00%, avg=4035.50, stdev=61.52, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1442KiB/s (1476kB/s)(7168KiB/4972msec); 0 zone resets clat (msec): min=166, max=1232, avg=520.78, stdev=366.06 lat (msec): min=166, max=1232, avg=521.06, stdev=366.09 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 234], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 514], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 684], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1899, max= 6119, per=55.17%, avg=2781.00, stdev=1866.68, samples=5 iops : min= 1, max= 5, avg= 1.80, stdev= 1.79, samples=5 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=3.66%, ctx=77, 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=3601KiB/s (3688kB/s), 360KiB/s-1335KiB/s (369kB/s-1367kB/s), io=20.0MiB (20.0MB), run=4972-5687msec WRITE: bw=5042KiB/s (5163kB/s), 953KiB/s-1801KiB/s (976kB/s-1844kB/s), io=28.0MiB (29.4MB), run=4972-5687msec 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=179149: Tue Aug 11 01:13:02 2026 read: IOPS=1, BW=4959KiB/s (5078kB/s)(12.0MiB/2478msec) clat (msec): min=737, max=828, avg=777.91, stdev=45.97 lat (msec): min=737, max=828, avg=777.91, stdev=45.97 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 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= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=14.86%, ctx=349, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179150: Tue Aug 11 01:13:02 2026 read: IOPS=0, BW=1399KiB/s (1432kB/s)(4096KiB/2928msec) clat (nsec): min=755808k, max=755808k, avg=755807917.00, stdev= 0.00 lat (nsec): min=755811k, max=755811k, avg=755810712.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2798KiB/s (2865kB/s)(8192KiB/2928msec); 0 zone resets clat (msec): min=627, max=1329, avg=978.52, stdev=496.54 lat (msec): min=630, max=1329, avg=980.15, stdev=494.63 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 1334], | 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= 7892, max= 7892, per=70.52%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=5.60%, ctx=143, 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=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=179151: Tue Aug 11 01:13:02 2026 write: IOPS=1, BW=4359KiB/s (4464kB/s)(12.0MiB/2819msec); 0 zone resets clat (msec): min=213, max=1520, avg=905.28, stdev=656.84 lat (msec): min=215, max=1521, avg=906.46, stdev=656.17 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7892, max= 7892, per=70.52%, avg=7892.00, 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=7.01%, ctx=90, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179152: Tue Aug 11 01:13:02 2026 write: IOPS=1, BW=4783KiB/s (4898kB/s)(12.0MiB/2569msec); 0 zone resets clat (msec): min=527, max=1323, avg=825.11, stdev=434.07 lat (msec): min=527, max=1323, avg=825.66, stdev=434.10 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 5603, max= 7937, per=60.50%, avg=6770.00, stdev=1650.39, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.91%, ctx=60, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5596KiB/s (5730kB/s), 1399KiB/s-4959KiB/s (1432kB/s-5078kB/s), io=16.0MiB (16.8MB), run=2478-2928msec WRITE: bw=10.9MiB/s (11.5MB/s), 2798KiB/s-4783KiB/s (2865kB/s-4898kB/s), io=32.0MiB (33.6MB), run=2569-2928msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179154: Tue Aug 11 01:13:02 2026 read: IOPS=0, BW=3873KiB/s (3966kB/s)(12.0MiB/3173msec) clat (msec): min=280, max=1774, avg=1038.55, stdev=747.19 lat (msec): min=280, max=1774, avg=1038.55, stdev=747.19 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, 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=3.81%, ctx=47, 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=179155: Tue Aug 11 01:13:02 2026 read: IOPS=0, BW=1294KiB/s (1325kB/s)(4096KiB/3166msec) clat (nsec): min=1243.9M, max=1243.9M, avg=1243939693.00, stdev= 0.00 lat (nsec): min=1243.9M, max=1243.9M, avg=1243942528.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1250], 5.00th=[ 1250], 10.00th=[ 1250], 20.00th=[ 1250], | 30.00th=[ 1250], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2587KiB/s (2650kB/s)(8192KiB/3166msec); 0 zone resets clat (msec): min=734, max=1158, avg=946.36, stdev=299.82 lat (msec): min=734, max=1158, avg=946.68, stdev=299.77 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8126, max= 8126, per=87.40%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.63%, ctx=40, 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=179156: Tue Aug 11 01:13:02 2026 write: IOPS=0, BW=3487KiB/s (3571kB/s)(12.0MiB/3524msec); 0 zone resets clat (msec): min=196, max=2099, avg=1141.56, stdev=951.42 lat (msec): min=196, max=2099, avg=1141.83, stdev=951.48 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8192, max= 8192, per=88.10%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.06%, sys=3.04%, ctx=47, 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=179157: Tue Aug 11 01:13:02 2026 write: IOPS=1, BW=4265KiB/s (4368kB/s)(12.0MiB/2881msec); 0 zone resets clat (msec): min=200, max=1836, avg=922.58, stdev=834.90 lat (msec): min=201, max=1837, avg=922.98, stdev=834.86 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8192, max= 8192, per=88.10%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.03%, ctx=52, 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=5164KiB/s (5287kB/s), 1294KiB/s-3873KiB/s (1325kB/s-3966kB/s), io=16.0MiB (16.8MB), run=3166-3173msec WRITE: bw=9299KiB/s (9522kB/s), 2587KiB/s-4265KiB/s (2650kB/s-4368kB/s), io=32.0MiB (33.6MB), run=2881-3524msec