== sanity test 398b: DIO and buffer IO race ============== 02:09:09 (1787119749) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.43759 s, 9.3 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=144837: Wed Aug 19 02:11:32 2026 read: IOPS=12, BW=48.5KiB/s (49.7kB/s)(5992KiB/123520msec) clat (usec): min=31, max=1023.2k, avg=41881.42, stdev=38340.21 lat (usec): min=32, max=1023.2k, avg=41883.48, stdev=38339.82 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 12518], | 20.00th=[ 21365], 30.00th=[ 26084], 40.00th=[ 30802], | 50.00th=[ 35914], 60.00th=[ 42730], 70.00th=[ 50594], | 80.00th=[ 60556], 90.00th=[ 77071], 95.00th=[ 90702], | 99.00th=[ 139461], 99.50th=[ 160433], 99.90th=[ 316670], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 103, per=25.64%, avg=48.98, stdev=18.78, samples=240 iops : min= 1, max= 25, avg=11.61, stdev= 4.70, samples=240 write: IOPS=12, BW=50.0KiB/s (52.2kB/s)(6296KiB/123520msec); 0 zone resets clat (usec): min=1064, max=358325, avg=38216.45, stdev=36996.69 lat (usec): min=1066, max=358326, avg=38219.86, stdev=36997.31 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1696], 10.00th=[ 2737], 20.00th=[ 5604], | 30.00th=[ 10421], 40.00th=[ 19792], 50.00th=[ 30540], 60.00th=[ 40109], | 70.00th=[ 50070], 80.00th=[ 64750], 90.00th=[ 86508], 95.00th=[105382], | 99.00th=[143655], 99.50th=[170918], 99.90th=[299893], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 127, per=25.49%, avg=50.98, stdev=19.54, samples=242 iops : min= 1, max= 31, avg=12.13, stdev= 4.92, samples=242 lat (usec) : 50=0.33%, 100=3.32%, 250=0.55%, 500=0.10%, 750=0.03% lat (msec) : 2=3.42%, 4=4.13%, 10=7.75%, 20=9.60%, 50=40.56% lat (msec) : 100=25.55%, 250=4.43%, 500=0.20%, 2000=0.03% cpu : usr=0.08%, sys=5.82%, ctx=6972, 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=144839: Wed Aug 19 02:11:32 2026 read: IOPS=11, BW=47.4KiB/s (48.6kB/s)(5940KiB/125274msec) clat (usec): min=29, max=243989, avg=41392.73, stdev=28885.04 lat (usec): min=30, max=243991, avg=41396.77, stdev=28888.79 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 73], 10.00th=[ 12387], 20.00th=[ 20841], | 30.00th=[ 25560], 40.00th=[ 30278], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[132645], 99.50th=[156238], 99.90th=[225444], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 5, max= 110, per=24.68%, avg=47.13, stdev=18.86, samples=246 iops : min= 1, max= 27, avg=11.15, stdev= 4.75, samples=246 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6348KiB/125274msec); 0 zone resets clat (usec): min=1187, max=995554, avg=39863.27, stdev=44963.65 lat (usec): min=1188, max=995556, avg=39868.90, stdev=44961.11 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1631], 10.00th=[ 2737], 20.00th=[ 5145], | 30.00th=[ 9503], 40.00th=[ 19268], 50.00th=[ 29230], 60.00th=[ 40633], | 70.00th=[ 52691], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[160433], 99.50th=[179307], 99.90th=[316670], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 8, max= 135, per=25.23%, avg=50.46, stdev=20.28, samples=245 iops : min= 2, max= 33, avg=11.99, stdev= 5.11, samples=245 lat (usec) : 50=0.29%, 100=2.86%, 250=0.65%, 500=0.23%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=3.61%, 4=4.82%, 10=8.11%, 20=9.05%, 50=39.10% lat (msec) : 100=25.72%, 250=5.37%, 500=0.07%, 1000=0.03% cpu : usr=0.09%, sys=5.93%, ctx=7071, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144840: Wed Aug 19 02:11:32 2026 read: IOPS=12, BW=48.4KiB/s (49.5kB/s)(6028KiB/124636msec) clat (usec): min=36, max=1022.2k, avg=40301.00, stdev=38076.68 lat (usec): min=37, max=1022.2k, avg=40303.79, stdev=38078.37 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 6259], | 20.00th=[ 20055], 30.00th=[ 24773], 40.00th=[ 29230], | 50.00th=[ 34866], 60.00th=[ 41157], 70.00th=[ 48497], | 80.00th=[ 57934], 90.00th=[ 73925], 95.00th=[ 85459], | 99.00th=[ 122160], 99.50th=[ 196084], 99.90th=[ 316670], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 102, per=25.27%, avg=48.27, stdev=19.46, samples=244 iops : min= 1, max= 25, avg=11.45, stdev= 4.91, samples=244 write: IOPS=12, BW=50.2KiB/s (51.4kB/s)(6260KiB/124636msec); 0 zone resets clat (usec): min=1149, max=354394, avg=40471.85, stdev=38820.81 lat (usec): min=1150, max=354396, avg=40476.11, stdev=38820.13 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1614], 10.00th=[ 2802], 20.00th=[ 5800], | 30.00th=[ 11469], 40.00th=[ 22414], 50.00th=[ 32113], 60.00th=[ 42730], | 70.00th=[ 53216], 80.00th=[ 66847], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[175113], 99.50th=[196084], 99.90th=[254804], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 7, max= 110, per=24.97%, avg=49.93, stdev=19.19, samples=245 iops : min= 1, max= 27, avg=11.86, stdev= 4.82, samples=245 lat (usec) : 50=0.29%, 100=3.32%, 250=0.55%, 500=0.20%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=3.65%, 4=4.20%, 10=6.77%, 20=9.80%, 50=40.10% lat (msec) : 100=26.14%, 250=4.69%, 500=0.13%, 2000=0.03% cpu : usr=0.09%, sys=5.84%, ctx=7045, 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=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=144841: Wed Aug 19 02:11:32 2026 read: IOPS=12, BW=48.0KiB/s (50.2kB/s)(6052KiB/123568msec) clat (usec): min=32, max=285808, avg=40709.23, stdev=28692.66 lat (usec): min=33, max=285809, avg=40712.81, stdev=28693.00 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 68], 10.00th=[ 1926], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 59507], 90.00th=[ 77071], 95.00th=[ 89654], | 99.00th=[130548], 99.50th=[141558], 99.90th=[244319], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 94, per=25.85%, avg=49.37, stdev=18.05, samples=240 iops : min= 1, max= 23, avg=11.72, stdev= 4.55, samples=240 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6236KiB/123568msec); 0 zone resets clat (usec): min=1238, max=1180.2k, avg=39378.58, stdev=48414.32 lat (usec): min=1239, max=1180.2k, avg=39382.66, stdev=48414.30 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1631], 10.00th=[ 2606], | 20.00th=[ 5211], 30.00th=[ 9765], 40.00th=[ 19792], | 50.00th=[ 29230], 60.00th=[ 39584], 70.00th=[ 51119], | 80.00th=[ 65274], 90.00th=[ 88605], 95.00th=[ 107480], | 99.00th=[ 164627], 99.50th=[ 200279], 99.90th=[ 438305], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 7, max= 125, per=25.22%, avg=50.43, stdev=19.00, samples=242 iops : min= 1, max= 31, avg=11.98, stdev= 4.77, samples=242 lat (usec) : 50=0.23%, 100=3.81%, 250=0.49%, 500=0.23%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=3.68%, 4=4.30%, 10=7.91%, 20=9.38%, 50=39.45% lat (msec) : 100=25.39%, 250=4.88%, 500=0.10%, 2000=0.03% cpu : usr=0.09%, sys=5.99%, ctx=7074, 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=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=192KiB/s (196kB/s), 47.4KiB/s-48.0KiB/s (48.6kB/s-50.2kB/s), io=23.4MiB (24.6MB), run=123520-125274msec WRITE: bw=201KiB/s (205kB/s), 50.2KiB/s-50.0KiB/s (51.4kB/s-52.2kB/s), io=24.6MiB (25.7MB), run=123520-125274msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144834: Wed Aug 19 02:13:39 2026 read: IOPS=5, BW=23.8KiB/s (24.4kB/s)(5992KiB/251810msec) clat (msec): min=6, max=1026, avg=35.85, stdev=47.77 lat (msec): min=6, max=1026, avg=35.85, stdev=47.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 46], 90.00th=[ 74], 95.00th=[ 99], | 99.00th=[ 215], 99.50th=[ 313], 99.90th=[ 514], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 87, per=27.07%, avg=25.44, stdev=16.90, samples=454 iops : min= 1, max= 21, avg= 5.72, stdev= 4.27, samples=454 write: IOPS=6, BW=25.0KiB/s (25.6kB/s)(6296KiB/251810msec); 0 zone resets clat (msec): min=38, max=444, avg=125.53, stdev=54.35 lat (msec): min=38, max=444, avg=125.54, stdev=54.36 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 93], 40.00th=[ 103], 50.00th=[ 113], 60.00th=[ 127], | 70.00th=[ 142], 80.00th=[ 163], 90.00th=[ 199], 95.00th=[ 228], | 99.00th=[ 313], 99.50th=[ 363], 99.90th=[ 435], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 6, max= 48, per=24.92%, avg=24.67, stdev=10.45, samples=491 iops : min= 1, max= 12, avg= 5.53, stdev= 2.67, samples=491 lat (msec) : 10=2.38%, 20=17.42%, 50=20.35%, 100=25.91%, 250=32.06% lat (msec) : 500=1.82%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.51%, ctx=5221, 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=144835: Wed Aug 19 02:13:39 2026 read: IOPS=5, BW=23.5KiB/s (24.1kB/s)(5940KiB/252882msec) clat (msec): min=4, max=1002, avg=35.31, stdev=45.03 lat (msec): min=4, max=1002, avg=35.31, stdev=45.03 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 69], 95.00th=[ 91], | 99.00th=[ 197], 99.50th=[ 275], 99.90th=[ 468], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 103, per=27.67%, avg=26.01, stdev=17.03, samples=442 iops : min= 1, max= 25, avg= 5.87, stdev= 4.27, samples=442 write: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6348KiB/252882msec); 0 zone resets clat (msec): min=43, max=442, avg=125.97, stdev=52.26 lat (msec): min=43, max=442, avg=125.97, stdev=52.26 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 93], 40.00th=[ 104], 50.00th=[ 115], 60.00th=[ 128], | 70.00th=[ 144], 80.00th=[ 163], 90.00th=[ 194], 95.00th=[ 226], | 99.00th=[ 288], 99.50th=[ 313], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 63, per=25.12%, avg=24.87, stdev=10.23, samples=493 iops : min= 1, max= 15, avg= 5.58, stdev= 2.60, samples=493 lat (msec) : 10=2.31%, 20=17.29%, 50=20.64%, 100=25.13%, 250=32.78% lat (msec) : 500=1.82%, 2000=0.03% cpu : usr=0.05%, sys=1.52%, ctx=5253, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144836: Wed Aug 19 02:13:39 2026 read: IOPS=6, BW=24.0KiB/s (24.6kB/s)(6028KiB/251026msec) clat (msec): min=5, max=561, avg=35.28, stdev=37.19 lat (msec): min=5, max=561, avg=35.28, stdev=37.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 72], 95.00th=[ 93], | 99.00th=[ 171], 99.50th=[ 271], 99.90th=[ 414], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 111, per=27.34%, avg=25.70, stdev=17.20, samples=453 iops : min= 1, max= 27, avg= 5.79, stdev= 4.32, samples=453 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6260KiB/251026msec); 0 zone resets clat (msec): min=32, max=1217, avg=126.10, stdev=61.14 lat (msec): min=32, max=1217, avg=126.10, stdev=61.13 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 92], 40.00th=[ 104], 50.00th=[ 114], 60.00th=[ 127], | 70.00th=[ 140], 80.00th=[ 161], 90.00th=[ 197], 95.00th=[ 230], | 99.00th=[ 305], 99.50th=[ 368], 99.90th=[ 477], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 6, max= 48, per=24.89%, avg=24.64, stdev=10.40, samples=490 iops : min= 1, max= 12, avg= 5.52, stdev= 2.65, samples=490 lat (msec) : 10=1.89%, 20=17.51%, 50=21.00%, 100=25.55%, 250=32.06% lat (msec) : 500=1.92%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.50%, ctx=5156, 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=144838: Wed Aug 19 02:13:39 2026 read: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6052KiB/250069msec) clat (msec): min=5, max=412, avg=33.96, stdev=35.47 lat (msec): min=5, max=412, avg=33.96, stdev=35.47 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 45], 90.00th=[ 69], 95.00th=[ 95], | 99.00th=[ 174], 99.50th=[ 236], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 118, per=28.16%, avg=26.47, stdev=18.08, samples=442 iops : min= 1, max= 29, avg= 5.98, stdev= 4.54, samples=442 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6236KiB/250069msec); 0 zone resets clat (msec): min=36, max=1150, avg=127.12, stdev=60.35 lat (msec): min=36, max=1150, avg=127.12, stdev=60.35 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 69], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 104], 50.00th=[ 115], 60.00th=[ 126], | 70.00th=[ 144], 80.00th=[ 165], 90.00th=[ 203], 95.00th=[ 232], | 99.00th=[ 309], 99.50th=[ 355], 99.90th=[ 447], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 55, per=24.79%, avg=24.54, stdev=10.68, samples=490 iops : min= 1, max= 13, avg= 5.50, stdev= 2.72, samples=490 lat (msec) : 10=2.12%, 20=18.52%, 50=20.90%, 100=24.35%, 250=32.23% lat (msec) : 500=1.86%, 2000=0.03% cpu : usr=0.04%, sys=1.48%, ctx=5150, 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=94.0KiB/s (97.2kB/s), 23.5KiB/s-24.2KiB/s (24.1kB/s-24.8kB/s), io=23.4MiB (24.6MB), run=250069-252882msec WRITE: bw=99.4KiB/s (102kB/s), 24.9KiB/s-25.1KiB/s (25.5kB/s-25.7kB/s), io=24.6MiB (25.7MB), run=250069-252882msec 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=144896: Wed Aug 19 02:14:27 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36263msec) clat (usec): min=39, max=276792, avg=52553.18, stdev=40035.72 lat (usec): min=40, max=276794, avg=52555.01, stdev=40035.56 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 67], 10.00th=[ 85], 20.00th=[ 23987], | 30.00th=[ 32900], 40.00th=[ 41681], 50.00th=[ 47973], 60.00th=[ 57934], | 70.00th=[ 67634], 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[117965], | 99.00th=[212861], 99.50th=[225444], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 351, per=25.19%, avg=163.51, stdev=70.57, samples=71 iops : min= 1, max= 21, avg= 9.46, stdev= 4.44, samples=71 write: IOPS=10, BW=176KiB/s (180kB/s)(6368KiB/36263msec); 0 zone resets clat (usec): min=1591, max=250815, avg=41287.69, stdev=43636.17 lat (usec): min=1593, max=250817, avg=41295.34, stdev=43633.41 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2507], 10.00th=[ 4080], 20.00th=[ 6980], | 30.00th=[ 10683], 40.00th=[ 16581], 50.00th=[ 27132], 60.00th=[ 38011], | 70.00th=[ 49021], 80.00th=[ 69731], 90.00th=[104334], 95.00th=[129500], | 99.00th=[198181], 99.50th=[248513], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 348, per=26.11%, avg=178.36, stdev=77.82, samples=70 iops : min= 1, max= 21, avg=10.41, stdev= 4.95, samples=70 lat (usec) : 50=0.39%, 100=5.47%, 250=1.04%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=1.56%, 4=3.91%, 10=9.64%, 20=9.51%, 50=29.82% lat (msec) : 100=27.86%, 250=9.90%, 500=0.26% cpu : usr=0.07%, sys=5.24%, ctx=1567, 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=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=144898: Wed Aug 19 02:14:27 2026 read: IOPS=9, BW=157KiB/s (161kB/s)(5744KiB/36563msec) clat (usec): min=38, max=375624, avg=53748.43, stdev=41398.94 lat (usec): min=39, max=375626, avg=53749.82, stdev=41398.95 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 71], 10.00th=[ 92], 20.00th=[ 25560], | 30.00th=[ 33817], 40.00th=[ 42206], 50.00th=[ 49021], 60.00th=[ 57934], | 70.00th=[ 67634], 80.00th=[ 77071], 90.00th=[ 95945], 95.00th=[124257], | 99.00th=[183501], 99.50th=[258999], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 31, max= 442, per=24.40%, avg=158.33, stdev=71.17, samples=70 iops : min= 1, max= 27, avg= 9.13, stdev= 4.51, samples=70 write: IOPS=11, BW=179KiB/s (183kB/s)(6544KiB/36563msec); 0 zone resets clat (usec): min=1579, max=261212, avg=41961.51, stdev=44788.75 lat (usec): min=1581, max=261215, avg=41970.58, stdev=44788.09 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2245], 10.00th=[ 3589], 20.00th=[ 6652], | 30.00th=[ 11338], 40.00th=[ 16909], 50.00th=[ 25297], 60.00th=[ 37487], | 70.00th=[ 52691], 80.00th=[ 73925], 90.00th=[103285], 95.00th=[132645], | 99.00th=[208667], 99.50th=[219153], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 403, per=25.99%, avg=177.49, stdev=70.74, samples=71 iops : min= 1, max= 25, avg=10.37, stdev= 4.54, samples=71 lat (usec) : 50=0.52%, 100=4.43%, 250=1.56%, 1000=0.13% lat (msec) : 2=1.56%, 4=4.04%, 10=9.64%, 20=10.42%, 50=27.99% lat (msec) : 100=29.82%, 250=9.51%, 500=0.39% cpu : usr=0.08%, sys=5.34%, ctx=1569, 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=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=144900: Wed Aug 19 02:14:27 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(6256KiB/36671msec) clat (usec): min=34, max=233984, avg=51445.80, stdev=39188.42 lat (usec): min=34, max=233987, avg=51456.54, stdev=39191.58 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 64], 10.00th=[ 75], 20.00th=[ 2638], | 30.00th=[ 33424], 40.00th=[ 41157], 50.00th=[ 49021], 60.00th=[ 57410], | 70.00th=[ 66323], 80.00th=[ 78119], 90.00th=[101188], 95.00th=[120062], | 99.00th=[168821], 99.50th=[181404], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 30, max= 352, per=26.30%, avg=170.68, stdev=74.96, samples=72 iops : min= 1, max= 22, avg= 9.93, stdev= 4.80, samples=72 write: IOPS=10, BW=164KiB/s (168kB/s)(6032KiB/36671msec); 0 zone resets clat (usec): min=1563, max=316979, avg=42720.92, stdev=44636.24 lat (usec): min=1565, max=316981, avg=42725.01, stdev=44639.18 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2409], 10.00th=[ 4228], 20.00th=[ 6980], | 30.00th=[ 11994], 40.00th=[ 21365], 50.00th=[ 28443], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 71828], 90.00th=[ 99091], 95.00th=[131597], | 99.00th=[185598], 99.50th=[287310], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 31, max= 318, per=23.85%, avg=162.92, stdev=65.84, samples=72 iops : min= 1, max= 19, avg= 9.43, stdev= 4.21, samples=72 lat (usec) : 50=0.78%, 100=7.16%, 250=1.30%, 500=0.52%, 750=0.26% lat (msec) : 2=1.17%, 4=3.52%, 10=9.24%, 20=5.99%, 50=29.43% lat (msec) : 100=30.21%, 250=10.03%, 500=0.39% cpu : usr=0.08%, sys=5.06%, ctx=1601, 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=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=144902: Wed Aug 19 02:14:27 2026 read: IOPS=10, BW=164KiB/s (167kB/s)(6032KiB/36883msec) clat (usec): min=29, max=385838, avg=54653.22, stdev=45704.78 lat (usec): min=29, max=385839, avg=54654.57, stdev=45704.83 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 67], 10.00th=[ 76], 20.00th=[ 19792], | 30.00th=[ 32375], 40.00th=[ 40633], 50.00th=[ 48497], 60.00th=[ 58459], | 70.00th=[ 68682], 80.00th=[ 83362], 90.00th=[105382], 95.00th=[133694], | 99.00th=[202376], 99.50th=[287310], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 62, max= 352, per=25.26%, avg=163.93, stdev=61.47, samples=71 iops : min= 3, max= 22, avg= 9.48, stdev= 3.89, samples=71 write: IOPS=10, BW=170KiB/s (174kB/s)(6256KiB/36883msec); 0 zone resets clat (usec): min=1473, max=319230, avg=40503.42, stdev=45104.17 lat (usec): min=1474, max=319232, avg=40506.20, stdev=45104.08 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2474], 10.00th=[ 4113], 20.00th=[ 7046], | 30.00th=[ 11207], 40.00th=[ 16057], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 62129], 90.00th=[101188], 95.00th=[127402], | 99.00th=[225444], 99.50th=[278922], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 31, max= 445, per=25.84%, avg=176.49, stdev=79.03, samples=69 iops : min= 1, max= 27, avg=10.29, stdev= 5.00, samples=69 lat (usec) : 50=0.78%, 100=7.16%, 250=0.91%, 500=0.26% lat (msec) : 2=1.56%, 4=3.39%, 10=8.72%, 20=10.55%, 50=28.65% lat (msec) : 100=26.30%, 250=11.07%, 500=0.65% cpu : usr=0.06%, sys=5.12%, ctx=1556, 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=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=649KiB/s (665kB/s), 157KiB/s-171KiB/s (161kB/s-175kB/s), io=23.4MiB (24.5MB), run=36263-36883msec WRITE: bw=683KiB/s (700kB/s), 164KiB/s-179KiB/s (168kB/s-183kB/s), io=24.6MiB (25.8MB), run=36263-36883msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144897: Wed Aug 19 02:15:08 2026 read: IOPS=4, BW=76.6KiB/s (78.4kB/s)(5920KiB/77331msec) clat (msec): min=6, max=412, avg=46.20, stdev=50.15 lat (msec): min=6, max=412, avg=46.20, stdev=50.15 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 60], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 288], 99.50th=[ 401], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 30, max= 287, per=28.35%, avg=87.04, stdev=56.72, samples=133 iops : min= 1, max= 17, avg= 4.60, stdev= 3.57, samples=133 write: IOPS=5, BW=82.3KiB/s (84.3kB/s)(6368KiB/77331msec); 0 zone resets clat (msec): min=38, max=543, avg=150.22, stdev=76.59 lat (msec): min=38, max=543, avg=150.24, stdev=76.61 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 91], | 30.00th=[ 105], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 167], 80.00th=[ 209], 90.00th=[ 259], 95.00th=[ 288], | 99.00th=[ 439], 99.50th=[ 498], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 30, max= 191, per=25.88%, avg=83.60, stdev=41.72, samples=149 iops : min= 1, max= 11, avg= 4.38, stdev= 2.65, samples=149 lat (msec) : 10=1.17%, 20=11.59%, 50=23.57%, 100=20.57%, 250=36.85% lat (msec) : 500=6.12%, 750=0.13% cpu : usr=0.04%, sys=1.44%, ctx=1381, 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=144899: Wed Aug 19 02:15:08 2026 read: IOPS=4, BW=73.8KiB/s (75.6kB/s)(5744KiB/77839msec) clat (msec): min=7, max=410, avg=44.80, stdev=50.07 lat (msec): min=7, max=410, avg=44.80, stdev=50.07 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 92], 95.00th=[ 138], | 99.00th=[ 251], 99.50th=[ 338], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 21, max= 348, per=29.37%, avg=90.15, stdev=61.92, samples=124 iops : min= 1, max= 21, avg= 4.79, stdev= 3.90, samples=124 write: IOPS=5, BW=84.1KiB/s (86.1kB/s)(6544KiB/77839msec); 0 zone resets clat (msec): min=31, max=560, avg=150.65, stdev=80.30 lat (msec): min=31, max=560, avg=150.66, stdev=80.29 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 68], 10.00th=[ 75], 20.00th=[ 89], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 203], 90.00th=[ 271], 95.00th=[ 309], | 99.00th=[ 439], 99.50th=[ 447], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 21, max= 190, per=26.80%, avg=86.58, stdev=40.76, samples=147 iops : min= 1, max= 11, avg= 4.57, stdev= 2.59, samples=147 lat (msec) : 10=1.43%, 20=12.89%, 50=21.74%, 100=22.53%, 250=34.38% lat (msec) : 500=6.90%, 750=0.13% cpu : usr=0.03%, sys=1.31%, ctx=1291, 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=144901: Wed Aug 19 02:15:08 2026 read: IOPS=5, BW=82.7KiB/s (84.7kB/s)(6256KiB/75621msec) clat (msec): min=7, max=409, avg=43.14, stdev=45.58 lat (msec): min=7, max=409, avg=43.15, stdev=45.58 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 93], 95.00th=[ 128], | 99.00th=[ 243], 99.50th=[ 313], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 30, max= 287, per=31.17%, avg=95.71, stdev=65.25, samples=129 iops : min= 1, max= 17, avg= 5.13, stdev= 4.10, samples=129 write: IOPS=4, BW=79.8KiB/s (81.7kB/s)(6032KiB/75621msec); 0 zone resets clat (msec): min=49, max=502, avg=154.49, stdev=80.60 lat (msec): min=49, max=502, avg=154.49, stdev=80.59 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 78], 20.00th=[ 93], | 30.00th=[ 105], 40.00th=[ 118], 50.00th=[ 133], 60.00th=[ 148], | 70.00th=[ 176], 80.00th=[ 205], 90.00th=[ 262], 95.00th=[ 309], | 99.00th=[ 447], 99.50th=[ 489], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 21, max= 191, per=25.38%, avg=81.97, stdev=39.29, samples=144 iops : min= 1, max= 11, avg= 4.28, stdev= 2.50, samples=144 lat (msec) : 10=0.78%, 20=13.67%, 50=25.39%, 100=19.53%, 250=33.98% lat (msec) : 500=6.51%, 750=0.13% cpu : usr=0.04%, sys=1.49%, ctx=1387, 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=144903: Wed Aug 19 02:15:08 2026 read: IOPS=4, BW=77.0KiB/s (79.9kB/s)(6032KiB/77350msec) clat (msec): min=8, max=294, avg=45.92, stdev=45.81 lat (msec): min=8, max=294, avg=45.95, stdev=45.87 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 99], 95.00th=[ 148], | 99.00th=[ 236], 99.50th=[ 253], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 280, per=30.74%, avg=94.36, stdev=59.70, samples=124 iops : min= 1, max= 17, avg= 5.07, stdev= 3.79, samples=124 write: IOPS=5, BW=80.9KiB/s (82.8kB/s)(6256KiB/77350msec); 0 zone resets clat (msec): min=43, max=556, avg=152.36, stdev=81.27 lat (msec): min=43, max=556, avg=152.37, stdev=81.27 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 69], 10.00th=[ 79], 20.00th=[ 92], | 30.00th=[ 102], 40.00th=[ 112], 50.00th=[ 125], 60.00th=[ 144], | 70.00th=[ 176], 80.00th=[ 211], 90.00th=[ 266], 95.00th=[ 317], | 99.00th=[ 409], 99.50th=[ 523], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 30, max= 191, per=25.75%, avg=83.18, stdev=41.35, samples=147 iops : min= 1, max= 11, avg= 4.35, stdev= 2.63, samples=147 lat (msec) : 10=0.78%, 20=12.89%, 50=23.70%, 100=22.14%, 250=34.11% lat (msec) : 500=6.12%, 750=0.26% cpu : usr=0.03%, sys=1.34%, ctx=1308, 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=308KiB/s (315kB/s), 73.8KiB/s-82.7KiB/s (75.6kB/s-84.7kB/s), io=23.4MiB (24.5MB), run=75621-77839msec WRITE: bw=324KiB/s (332kB/s), 79.8KiB/s-84.1KiB/s (81.7kB/s-86.1kB/s), io=24.6MiB (25.8MB), run=75621-77839msec 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=144921: Wed Aug 19 02:15:24 2026 read: IOPS=1, BW=1925KiB/s (1971kB/s)(7168KiB/3724msec) clat (usec): min=803, max=428254, avg=245058.43, stdev=134578.91 lat (usec): min=804, max=428255, avg=245059.96, stdev=134578.81 clat percentiles (usec): | 1.00th=[ 807], 5.00th=[ 807], 10.00th=[ 807], 20.00th=[152044], | 30.00th=[265290], 40.00th=[265290], 50.00th=[270533], 60.00th=[295699], | 70.00th=[295699], 80.00th=[299893], 90.00th=[429917], 95.00th=[429917], | 99.00th=[429917], 99.50th=[429917], 99.90th=[429917], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 1996, max= 3447, per=67.84%, avg=2302.40, stdev=640.06, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1375KiB/s (1408kB/s)(5120KiB/3724msec); 0 zone resets clat (msec): min=260, max=673, avg=389.65, stdev=170.72 lat (msec): min=260, max=673, avg=389.72, stdev=170.70 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1939, max= 4023, per=55.82%, avg=2652.67, stdev=1187.09, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 250=8.33%, 500=75.00%, 750=8.33% cpu : usr=0.03%, sys=11.55%, ctx=218, 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=144922: Wed Aug 19 02:15:24 2026 read: IOPS=0, BW=339KiB/s (348kB/s)(2048KiB/6033msec) clat (msec): min=5, max=140, avg=73.13, stdev=95.16 lat (msec): min=5, max=140, avg=73.13, stdev=95.16 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 6], 40.00th=[ 6], 50.00th=[ 6], 60.00th=[ 140], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 140], 95.00th=[ 140], | 99.00th=[ 140], 99.50th=[ 140], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 1590, max= 2011, per=53.05%, avg=1800.50, stdev=297.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1697KiB/s (1738kB/s)(10.0MiB/6033msec); 0 zone resets clat (msec): min=156, max=1057, avg=583.85, stdev=306.00 lat (msec): min=156, max=1057, avg=583.94, stdev=305.98 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 218], | 30.00th=[ 313], 40.00th=[ 523], 50.00th=[ 558], 60.00th=[ 625], | 70.00th=[ 634], 80.00th=[ 718], 90.00th=[ 1036], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 1976, max= 4047, per=47.74%, avg=2268.38, stdev=719.04, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 10=8.33%, 250=25.00%, 500=8.33%, 750=41.67%, 2000=16.67% cpu : usr=0.00%, sys=8.45%, ctx=111, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144923: Wed Aug 19 02:15:24 2026 read: IOPS=1, BW=1559KiB/s (1597kB/s)(6144KiB/3940msec) clat (usec): min=484, max=331869, avg=138706.01, stdev=161503.33 lat (usec): min=485, max=331870, avg=138707.16, stdev=161503.06 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 586], | 30.00th=[ 586], 40.00th=[ 6783], 50.00th=[ 6783], 60.00th=[160433], | 70.00th=[329253], 80.00th=[329253], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2007, max= 4047, per=97.54%, avg=3310.67, stdev=1132.17, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1559KiB/s (1597kB/s)(6144KiB/3940msec); 0 zone resets clat (msec): min=249, max=942, avg=503.11, stdev=253.85 lat (msec): min=249, max=942, avg=503.22, stdev=253.87 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 523], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1698, max= 2039, per=40.75%, avg=1936.60, stdev=138.28, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 10=8.33%, 250=16.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=9.95%, ctx=163, 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=144924: Wed Aug 19 02:15:24 2026 read: IOPS=1, BW=1319KiB/s (1351kB/s)(5120KiB/3882msec) clat (usec): min=332, max=534747, avg=108225.27, stdev=238441.01 lat (usec): min=332, max=534748, avg=108226.27, stdev=238441.08 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 603], 60.00th=[ 603], | 70.00th=[ 4883], 80.00th=[ 4883], 90.00th=[534774], 95.00th=[534774], | 99.00th=[534774], 99.50th=[534774], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 7757, max= 7757, per=100.00%, avg=7757.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1846KiB/s (1891kB/s)(7168KiB/3882msec); 0 zone resets clat (msec): min=260, max=673, avg=466.99, stdev=181.35 lat (msec): min=261, max=674, avg=467.21, stdev=181.29 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 288], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 502], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 667], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1996, max= 4079, per=63.73%, avg=3028.25, stdev=1176.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 10=8.33%, 500=25.00%, 750=41.67% cpu : usr=0.00%, sys=9.74%, ctx=145, 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=3395KiB/s (3476kB/s), 339KiB/s-1925KiB/s (348kB/s-1971kB/s), io=20.0MiB (20.0MB), run=3724-6033msec WRITE: bw=4753KiB/s (4867kB/s), 1375KiB/s-1846KiB/s (1408kB/s-1891kB/s), io=28.0MiB (29.4MB), run=3724-6033msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144926: Wed Aug 19 02:15:24 2026 read: IOPS=1, BW=1291KiB/s (1322kB/s)(7168KiB/5551msec) clat (msec): min=136, max=1264, avg=404.39, stdev=398.56 lat (msec): min=136, max=1264, avg=404.39, stdev=398.56 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 157], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 224], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 451], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1646, max= 4063, per=85.75%, avg=2922.25, stdev=1292.01, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=922KiB/s (944kB/s)(5120KiB/5551msec); 0 zone resets clat (msec): min=265, max=996, avg=534.85, stdev=283.28 lat (msec): min=265, max=999, avg=535.53, stdev=284.44 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1973, max= 2027, per=42.19%, avg=2013.50, stdev=27.00, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.37%, ctx=122, 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=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=144927: Wed Aug 19 02:15:24 2026 read: IOPS=0, BW=341KiB/s (349kB/s)(2048KiB/6008msec) clat (msec): min=71, max=539, avg=305.25, stdev=330.92 lat (msec): min=71, max=539, avg=305.25, stdev=330.92 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 71], 40.00th=[ 71], 50.00th=[ 71], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1387, max= 2015, per=49.91%, avg=1701.00, stdev=444.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1704KiB/s (1745kB/s)(10.0MiB/6008msec); 0 zone resets clat (msec): min=248, max=831, avg=536.21, stdev=195.43 lat (msec): min=248, max=831, avg=536.35, stdev=195.46 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 342], | 30.00th=[ 355], 40.00th=[ 363], 50.00th=[ 567], 60.00th=[ 625], | 70.00th=[ 651], 80.00th=[ 659], 90.00th=[ 726], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1903, max= 4063, per=53.73%, avg=2564.00, stdev=990.94, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 100=8.33%, 250=8.33%, 500=25.00%, 750=50.00%, 1000=8.33% cpu : usr=0.00%, sys=3.21%, ctx=78, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144928: Wed Aug 19 02:15:24 2026 read: IOPS=1, BW=1062KiB/s (1087kB/s)(6144KiB/5786msec) clat (msec): min=133, max=408, avg=223.00, stdev=102.92 lat (msec): min=133, max=408, avg=223.01, stdev=102.92 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 226], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 2003, max= 2027, per=59.22%, avg=2018.20, stdev=12.13, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1062KiB/s (1087kB/s)(6144KiB/5786msec); 0 zone resets clat (msec): min=274, max=1122, avg=735.73, stdev=274.81 lat (msec): min=274, max=1122, avg=736.35, stdev=274.92 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 785], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1973, max= 2031, per=42.15%, avg=2011.33, stdev=22.07, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.03%, sys=2.37%, ctx=57, 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=144929: Wed Aug 19 02:15:24 2026 read: IOPS=0, BW=903KiB/s (924kB/s)(5120KiB/5673msec) clat (msec): min=135, max=290, avg=195.30, stdev=60.68 lat (msec): min=135, max=290, avg=195.30, stdev=60.68 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 169], 60.00th=[ 169], | 70.00th=[ 218], 80.00th=[ 218], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 2027, max= 6083, per=100.00%, avg=4055.00, stdev=2868.03, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1264KiB/s (1294kB/s)(7168KiB/5673msec); 0 zone resets clat (msec): min=431, max=1198, avg=663.73, stdev=279.54 lat (msec): min=432, max=1198, avg=663.86, stdev=279.54 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 451], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 518], 60.00th=[ 693], | 70.00th=[ 693], 80.00th=[ 852], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1910, max= 3946, per=48.55%, avg=2316.67, stdev=799.30, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.86%, ctx=145, 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=3409KiB/s (3491kB/s), 341KiB/s-1291KiB/s (349kB/s-1322kB/s), io=20.0MiB (20.0MB), run=5551-6008msec WRITE: bw=4772KiB/s (4887kB/s), 922KiB/s-1704KiB/s (944kB/s-1745kB/s), io=28.0MiB (29.4MB), run=5551-6008msec 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=144935: Wed Aug 19 02:15:41 2026 read: IOPS=0, BW=2028KiB/s (2077kB/s)(12.0MiB/6059msec) clat (msec): min=823, max=3825, avg=1993.38, stdev=1606.92 lat (msec): min=823, max=3825, avg=1993.39, stdev=1606.92 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 3842], 80.00th=[ 3842], 90.00th=[ 3842], 95.00th=[ 3842], | 99.00th=[ 3842], 99.50th=[ 3842], 99.90th=[ 3842], 99.95th=[ 3842], | 99.99th=[ 3842] bw ( KiB/s): min= 8094, max= 8110, per=100.00%, avg=8102.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=7.35%, ctx=582, 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=144936: Wed Aug 19 02:15:41 2026 read: IOPS=0, BW=672KiB/s (688kB/s)(4096KiB/6096msec) clat (nsec): min=886609k, max=886609k, avg=886609254.00, stdev= 0.00 lat (nsec): min=886612k, max=886612k, avg=886612232.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1344KiB/s (1376kB/s)(8192KiB/6096msec); 0 zone resets clat (msec): min=1541, max=3555, avg=2548.60, stdev=1423.68 lat (msec): min=1542, max=3555, avg=2548.93, stdev=1423.63 clat percentiles (msec): | 1.00th=[ 1536], 5.00th=[ 1536], 10.00th=[ 1536], 20.00th=[ 1536], | 30.00th=[ 1536], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 3540], | 70.00th=[ 3540], 80.00th=[ 3540], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=2.38%, ctx=73, 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=144937: Wed Aug 19 02:15:41 2026 write: IOPS=0, BW=1877KiB/s (1922kB/s)(12.0MiB/6546msec); 0 zone resets clat (msec): min=1117, max=4065, avg=2134.89, stdev=1673.00 lat (msec): min=1118, max=4066, avg=2135.68, stdev=1672.88 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 4077], 80.00th=[ 4077], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 8078, max= 8175, per=100.00%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.99%, ctx=59, 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=144938: Wed Aug 19 02:15:41 2026 write: IOPS=0, BW=2073KiB/s (2123kB/s)(12.0MiB/5927msec); 0 zone resets clat (msec): min=699, max=3642, avg=1927.52, stdev=1530.99 lat (msec): min=700, max=3645, avg=1928.74, stdev=1531.79 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 3641], 80.00th=[ 3641], 90.00th=[ 3641], 95.00th=[ 3641], | 99.00th=[ 3641], 99.50th=[ 3641], 99.90th=[ 3641], 99.95th=[ 3641], | 99.99th=[ 3641] bw ( KiB/s): min= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=1.65%, ctx=76, 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=2688KiB/s (2752kB/s), 672KiB/s-2028KiB/s (688kB/s-2077kB/s), io=16.0MiB (16.8MB), run=6059-6096msec WRITE: bw=5006KiB/s (5126kB/s), 1344KiB/s-2073KiB/s (1376kB/s-2123kB/s), io=32.0MiB (33.6MB), run=5927-6546msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144941: Wed Aug 19 02:15:42 2026 read: IOPS=0, BW=2201KiB/s (2254kB/s)(12.0MiB/5582msec) clat (msec): min=643, max=3231, avg=1860.43, stdev=1300.88 lat (msec): min=643, max=3231, avg=1860.43, stdev=1300.88 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 1703], 50.00th=[ 1703], 60.00th=[ 1703], | 70.00th=[ 3239], 80.00th=[ 3239], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 8031, max= 8175, per=100.00%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.90%, ctx=57, 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=144942: Wed Aug 19 02:15:42 2026 read: IOPS=0, BW=674KiB/s (690kB/s)(4096KiB/6075msec) clat (nsec): min=2949.6M, max=2949.6M, avg=2949599031.00, stdev= 0.00 lat (nsec): min=2949.6M, max=2949.6M, avg=2949600941.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2937], 5.00th=[ 2937], 10.00th=[ 2937], 20.00th=[ 2937], | 30.00th=[ 2937], 40.00th=[ 2937], 50.00th=[ 2937], 60.00th=[ 2937], | 70.00th=[ 2937], 80.00th=[ 2937], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1348KiB/s (1381kB/s)(8192KiB/6075msec); 0 zone resets clat (msec): min=1071, max=2051, avg=1561.71, stdev=693.03 lat (msec): min=1072, max=2051, avg=1562.05, stdev=692.88 clat percentiles (msec): | 1.00th=[ 1070], 5.00th=[ 1070], 10.00th=[ 1070], 20.00th=[ 1070], | 30.00th=[ 1070], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 2056], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.98%, ctx=58, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144943: Wed Aug 19 02:15:42 2026 write: IOPS=0, BW=2042KiB/s (2091kB/s)(12.0MiB/6019msec); 0 zone resets clat (msec): min=362, max=4038, avg=2004.54, stdev=1868.96 lat (msec): min=363, max=4039, avg=2005.28, stdev=1868.81 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 1620], 50.00th=[ 1620], 60.00th=[ 1620], | 70.00th=[ 4044], 80.00th=[ 4044], 90.00th=[ 4044], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] bw ( KiB/s): min= 7937, max= 8094, per=100.00%, avg=8015.50, stdev=111.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.93%, ctx=53, 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=144944: Wed Aug 19 02:15:42 2026 write: IOPS=0, BW=2143KiB/s (2194kB/s)(12.0MiB/5735msec); 0 zone resets clat (msec): min=400, max=3957, avg=1910.57, stdev=1837.99 lat (msec): min=401, max=3957, avg=1911.16, stdev=1837.71 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 1368], 50.00th=[ 1368], 60.00th=[ 1368], | 70.00th=[ 3943], 80.00th=[ 3943], 90.00th=[ 3943], 95.00th=[ 3943], | 99.00th=[ 3943], 99.50th=[ 3943], 99.90th=[ 3943], 99.95th=[ 3943], | 99.99th=[ 3943] bw ( KiB/s): min= 7937, max= 7937, per=100.00%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.49%, ctx=56, 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=2697KiB/s (2762kB/s), 674KiB/s-2201KiB/s (690kB/s-2254kB/s), io=16.0MiB (16.8MB), run=5582-6075msec WRITE: bw=5394KiB/s (5523kB/s), 1348KiB/s-2143KiB/s (1381kB/s-2194kB/s), io=32.0MiB (33.6MB), run=5735-6075msec