== sanity test 398b: DIO and buffer IO race ============== 19:02:19 (1786316539) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.78648 s, 7.4 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=178803: Sun Aug 9 19:04:48 2026 read: IOPS=11, BW=46.0KiB/s (48.1kB/s)(5992KiB/127597msec) clat (usec): min=32, max=1054.9k, avg=46312.73, stdev=40425.59 lat (usec): min=33, max=1054.9k, avg=46316.46, stdev=40427.44 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11207], 10.00th=[ 16057], | 20.00th=[ 22414], 30.00th=[ 27657], 40.00th=[ 33817], | 50.00th=[ 39584], 60.00th=[ 45876], 70.00th=[ 53740], | 80.00th=[ 64750], 90.00th=[ 81265], 95.00th=[ 101188], | 99.00th=[ 168821], 99.50th=[ 189793], 99.90th=[ 214959], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 6, max= 152, per=24.82%, avg=46.67, stdev=20.84, samples=251 iops : min= 1, max= 38, avg=11.02, stdev= 5.24, samples=251 write: IOPS=12, BW=49.3KiB/s (50.5kB/s)(6296KiB/127597msec); 0 zone resets clat (usec): min=965, max=269629, avg=36587.99, stdev=36795.95 lat (usec): min=966, max=269631, avg=36595.83, stdev=36802.99 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 1975], 20.00th=[ 4490], | 30.00th=[ 8291], 40.00th=[ 18220], 50.00th=[ 27919], 60.00th=[ 35914], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[162530], 99.50th=[183501], 99.90th=[248513], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 200, per=24.98%, avg=49.22, stdev=21.71, samples=250 iops : min= 1, max= 50, avg=11.66, stdev= 5.48, samples=250 lat (usec) : 50=0.20%, 100=1.63%, 250=0.16%, 750=0.03%, 1000=0.07% lat (msec) : 2=5.18%, 4=4.30%, 10=7.06%, 20=10.71%, 50=39.75% lat (msec) : 100=24.93%, 250=5.92%, 500=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.70%, ctx=6666, 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=178806: Sun Aug 9 19:04:48 2026 read: IOPS=11, BW=47.5KiB/s (48.6kB/s)(5940KiB/125035msec) clat (usec): min=38, max=1053.3k, avg=45813.01, stdev=38619.68 lat (usec): min=39, max=1053.3k, avg=45815.36, stdev=38619.81 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 13173], 10.00th=[ 17695], | 20.00th=[ 23462], 30.00th=[ 28181], 40.00th=[ 32900], | 50.00th=[ 38536], 60.00th=[ 45876], 70.00th=[ 54264], | 80.00th=[ 64226], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[ 143655], 99.50th=[ 187696], 99.90th=[ 238027], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 6, max= 102, per=25.10%, avg=47.18, stdev=18.79, samples=245 iops : min= 1, max= 25, avg=11.16, stdev= 4.71, samples=245 write: IOPS=12, BW=50.8KiB/s (51.0kB/s)(6348KiB/125035msec); 0 zone resets clat (usec): min=1099, max=292889, avg=35545.74, stdev=36319.41 lat (usec): min=1101, max=292891, avg=35550.54, stdev=36316.92 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1450], 10.00th=[ 2073], 20.00th=[ 4080], | 30.00th=[ 7701], 40.00th=[ 16450], 50.00th=[ 26608], 60.00th=[ 36439], | 70.00th=[ 45351], 80.00th=[ 60031], 90.00th=[ 84411], 95.00th=[110625], | 99.00th=[158335], 99.50th=[173016], 99.90th=[238027], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 142, per=25.54%, avg=50.31, stdev=22.66, samples=245 iops : min= 1, max= 35, avg=11.94, stdev= 5.73, samples=245 lat (usec) : 50=0.13%, 100=1.24%, 250=0.10%, 1000=0.03% lat (msec) : 2=4.92%, 4=5.27%, 10=7.23%, 20=10.55%, 50=40.17% lat (msec) : 100=24.74%, 250=5.57%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=4.95%, ctx=6633, 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=178807: Sun Aug 9 19:04:48 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(6028KiB/122528msec) clat (usec): min=33, max=229664, avg=45360.15, stdev=30441.65 lat (usec): min=34, max=229665, avg=45362.63, stdev=30442.14 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10814], 10.00th=[ 16712], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 32900], 50.00th=[ 39060], 60.00th=[ 45351], | 70.00th=[ 54264], 80.00th=[ 63701], 90.00th=[ 82314], 95.00th=[ 96994], | 99.00th=[154141], 99.50th=[196084], 99.90th=[214959], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 8, max= 126, per=26.25%, avg=49.34, stdev=19.95, samples=239 iops : min= 2, max= 31, avg=11.69, stdev= 5.03, samples=239 write: IOPS=12, BW=51.1KiB/s (52.3kB/s)(6260KiB/122528msec); 0 zone resets clat (usec): min=948, max=1024.6k, avg=34203.96, stdev=42021.58 lat (usec): min=950, max=1024.6k, avg=34216.87, stdev=42028.36 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1401], 10.00th=[ 1729], | 20.00th=[ 4047], 30.00th=[ 7242], 40.00th=[ 15139], | 50.00th=[ 25035], 60.00th=[ 33817], 70.00th=[ 43779], | 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[ 149947], 99.50th=[ 173016], 99.90th=[ 238027], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 119, per=26.01%, avg=51.24, stdev=22.30, samples=239 iops : min= 1, max= 29, avg=12.17, stdev= 5.61, samples=239 lat (usec) : 50=0.29%, 100=1.66%, 250=0.07%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.12%, 4=4.00%, 10=7.58%, 20=10.25%, 50=40.36% lat (msec) : 100=24.84%, 250=4.62%, 2000=0.03% cpu : usr=0.07%, sys=4.96%, ctx=6612, 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=178810: Sun Aug 9 19:04:48 2026 read: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6052KiB/126640msec) clat (usec): min=38, max=901492, avg=46334.95, stdev=37524.47 lat (usec): min=39, max=901493, avg=46349.34, stdev=37540.41 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 10552], 10.00th=[ 16909], 20.00th=[ 23200], | 30.00th=[ 27657], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[152044], 99.50th=[193987], 99.90th=[267387], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 6, max= 103, per=25.25%, avg=47.47, stdev=18.60, samples=249 iops : min= 1, max= 25, avg=11.22, stdev= 4.69, samples=249 write: IOPS=12, BW=49.2KiB/s (50.4kB/s)(6236KiB/126640msec); 0 zone resets clat (usec): min=986, max=250460, avg=35868.13, stdev=35617.06 lat (usec): min=987, max=250463, avg=35870.37, stdev=35616.80 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1401], 10.00th=[ 1827], 20.00th=[ 4359], | 30.00th=[ 7832], 40.00th=[ 17695], 50.00th=[ 26346], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 63177], 90.00th=[ 87557], 95.00th=[104334], | 99.00th=[147850], 99.50th=[166724], 99.90th=[214959], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 7, max= 119, per=24.90%, avg=49.04, stdev=20.68, samples=248 iops : min= 1, max= 29, avg=11.62, stdev= 5.20, samples=248 lat (usec) : 50=0.23%, 100=1.53%, 250=0.13%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.50%, 4=4.04%, 10=7.39%, 20=9.64%, 50=40.14% lat (msec) : 100=25.81%, 250=5.37%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=4.86%, ctx=6632, 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=188KiB/s (193kB/s), 46.0KiB/s-49.2KiB/s (48.1kB/s-50.4kB/s), io=23.4MiB (24.6MB), run=122528-127597msec WRITE: bw=197KiB/s (202kB/s), 49.2KiB/s-51.1KiB/s (50.4kB/s-52.3kB/s), io=24.6MiB (25.7MB), run=122528-127597msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178804: Sun Aug 9 19:05:29 2026 read: IOPS=8, BW=35.5KiB/s (36.4kB/s)(5992KiB/168661msec) clat (msec): min=5, max=1079, avg=43.78, stdev=46.13 lat (msec): min=5, max=1079, avg=43.79, stdev=46.13 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 93], 95.00th=[ 125], | 99.00th=[ 192], 99.50th=[ 213], 99.90th=[ 264], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 150, per=25.39%, avg=36.06, stdev=24.01, samples=323 iops : min= 1, max= 37, avg= 8.37, stdev= 6.03, samples=323 write: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6296KiB/168661msec); 0 zone resets clat (msec): min=8, max=338, avg=65.10, stdev=45.39 lat (msec): min=8, max=338, avg=65.10, stdev=45.39 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 75], 80.00th=[ 95], 90.00th=[ 126], 95.00th=[ 159], | 99.00th=[ 230], 99.50th=[ 255], 99.90th=[ 321], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 150, per=25.05%, avg=37.08, stdev=23.27, samples=330 iops : min= 1, max= 37, avg= 8.62, stdev= 5.84, samples=330 lat (msec) : 10=1.95%, 20=13.93%, 50=44.76%, 100=25.65%, 250=13.38% lat (msec) : 500=0.29%, 2000=0.03% cpu : usr=0.06%, sys=2.02%, ctx=4900, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178805: Sun Aug 9 19:05:29 2026 read: IOPS=8, BW=35.3KiB/s (36.1kB/s)(5940KiB/168271msec) clat (msec): min=5, max=986, avg=43.55, stdev=44.45 lat (msec): min=5, max=986, avg=43.55, stdev=44.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 95], 95.00th=[ 125], | 99.00th=[ 180], 99.50th=[ 192], 99.90th=[ 271], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 127, per=25.33%, avg=35.98, stdev=24.95, samples=321 iops : min= 1, max= 31, avg= 8.35, stdev= 6.25, samples=321 write: IOPS=9, BW=37.7KiB/s (38.6kB/s)(6348KiB/168271msec); 0 zone resets clat (msec): min=10, max=386, avg=64.91, stdev=43.47 lat (msec): min=10, max=386, avg=64.92, stdev=43.47 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 64], | 70.00th=[ 77], 80.00th=[ 96], 90.00th=[ 124], 95.00th=[ 146], | 99.00th=[ 205], 99.50th=[ 239], 99.90th=[ 368], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 150, per=25.40%, avg=37.59, stdev=22.27, samples=328 iops : min= 1, max= 37, avg= 8.75, stdev= 5.59, samples=328 lat (msec) : 10=2.08%, 20=13.41%, 50=44.95%, 100=25.85%, 250=13.41% lat (msec) : 500=0.26%, 1000=0.03% cpu : usr=0.05%, sys=1.93%, ctx=4601, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178808: Sun Aug 9 19:05:29 2026 read: IOPS=8, BW=35.7KiB/s (36.5kB/s)(6028KiB/168985msec) clat (msec): min=5, max=267, avg=44.78, stdev=38.54 lat (msec): min=5, max=267, avg=44.78, stdev=38.54 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 66], 90.00th=[ 97], 95.00th=[ 130], | 99.00th=[ 180], 99.50th=[ 203], 99.90th=[ 251], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 7, max= 111, per=25.36%, avg=36.01, stdev=24.12, samples=326 iops : min= 1, max= 27, avg= 8.36, stdev= 6.06, samples=326 write: IOPS=9, BW=37.0KiB/s (37.9kB/s)(6260KiB/168985msec); 0 zone resets clat (msec): min=9, max=984, avg=64.47, stdev=51.37 lat (msec): min=9, max=984, avg=64.48, stdev=51.37 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 61], | 70.00th=[ 73], 80.00th=[ 92], 90.00th=[ 128], 95.00th=[ 157], | 99.00th=[ 220], 99.50th=[ 247], 99.90th=[ 397], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 158, per=24.97%, avg=36.95, stdev=23.91, samples=330 iops : min= 1, max= 39, avg= 8.59, stdev= 6.00, samples=330 lat (msec) : 10=1.73%, 20=14.84%, 50=44.66%, 100=25.39%, 250=13.09% lat (msec) : 500=0.26%, 1000=0.03% cpu : usr=0.06%, sys=1.97%, ctx=4848, 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=178809: Sun Aug 9 19:05:29 2026 read: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6052KiB/168839msec) clat (msec): min=4, max=248, avg=44.07, stdev=39.22 lat (msec): min=4, max=248, avg=44.08, stdev=39.22 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 96], 95.00th=[ 129], | 99.00th=[ 197], 99.50th=[ 213], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 7, max= 150, per=25.46%, avg=36.15, stdev=24.54, samples=325 iops : min= 1, max= 37, avg= 8.39, stdev= 6.16, samples=325 write: IOPS=9, BW=36.9KiB/s (37.8kB/s)(6236KiB/168839msec); 0 zone resets clat (msec): min=11, max=1006, avg=65.16, stdev=50.84 lat (msec): min=11, max=1006, avg=65.16, stdev=50.84 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 74], 80.00th=[ 94], 90.00th=[ 124], 95.00th=[ 150], | 99.00th=[ 224], 99.50th=[ 271], 99.90th=[ 397], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 118, per=24.80%, avg=36.71, stdev=22.91, samples=329 iops : min= 1, max= 29, avg= 8.53, stdev= 5.76, samples=329 lat (msec) : 10=2.15%, 20=14.00%, 50=44.37%, 100=25.88%, 250=13.25% lat (msec) : 500=0.33%, 2000=0.03% cpu : usr=0.06%, sys=1.96%, ctx=4764, 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=142KiB/s (146kB/s), 35.3KiB/s-35.8KiB/s (36.1kB/s-36.7kB/s), io=23.4MiB (24.6MB), run=168271-168985msec WRITE: bw=149KiB/s (152kB/s), 36.9KiB/s-37.7KiB/s (37.8kB/s-38.6kB/s), io=24.6MiB (25.7MB), run=168271-168985msec 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=178849: Sun Aug 9 19:06:14 2026 read: IOPS=11, BW=178KiB/s (182kB/s)(5920KiB/33249msec) clat (usec): min=38, max=199857, avg=49109.98, stdev=32530.38 lat (usec): min=38, max=199859, avg=49111.31, stdev=32530.41 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 11994], 20.00th=[ 26346], | 30.00th=[ 31851], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 49546], | 70.00th=[ 58459], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[158335], 99.50th=[185598], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 62, max= 412, per=25.43%, avg=180.80, stdev=66.52, samples=64 iops : min= 3, max= 25, avg=10.53, stdev= 4.24, samples=64 write: IOPS=11, BW=192KiB/s (196kB/s)(6368KiB/33249msec); 0 zone resets clat (usec): min=1632, max=223969, avg=37521.12, stdev=34691.74 lat (usec): min=1635, max=223971, avg=37523.71, stdev=34691.69 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2073], 10.00th=[ 3458], 20.00th=[ 7111], | 30.00th=[ 11994], 40.00th=[ 20579], 50.00th=[ 28967], 60.00th=[ 37487], | 70.00th=[ 47449], 80.00th=[ 62129], 90.00th=[ 85459], 95.00th=[109577], | 99.00th=[143655], 99.50th=[168821], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 508, per=26.03%, avg=194.97, stdev=74.42, samples=64 iops : min= 1, max= 31, avg=11.44, stdev= 4.68, samples=64 lat (usec) : 50=0.39%, 100=3.52%, 250=0.26% lat (msec) : 2=1.69%, 4=5.21%, 10=7.29%, 20=8.33%, 50=39.58% lat (msec) : 100=26.95%, 250=6.77% cpu : usr=0.08%, sys=5.19%, ctx=1724, 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=178850: Sun Aug 9 19:06:14 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(5744KiB/33294msec) clat (usec): min=36, max=182533, avg=50753.95, stdev=31053.18 lat (usec): min=36, max=182534, avg=50755.35, stdev=31053.17 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 81], 10.00th=[ 18220], 20.00th=[ 28967], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 46400], 60.00th=[ 54264], | 70.00th=[ 61604], 80.00th=[ 72877], 90.00th=[ 88605], 95.00th=[105382], | 99.00th=[158335], 99.50th=[166724], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 22, max= 343, per=24.30%, avg=172.74, stdev=70.72, samples=65 iops : min= 1, max= 21, avg=10.03, stdev= 4.45, samples=65 write: IOPS=12, BW=197KiB/s (201kB/s)(6544KiB/33294msec); 0 zone resets clat (usec): min=1533, max=189142, avg=35758.08, stdev=33300.08 lat (usec): min=1535, max=189145, avg=35772.18, stdev=33289.49 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2638], 10.00th=[ 3720], 20.00th=[ 6456], | 30.00th=[ 11731], 40.00th=[ 18482], 50.00th=[ 28705], 60.00th=[ 35914], | 70.00th=[ 43254], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[139461], 99.50th=[177210], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 436, per=26.35%, avg=197.38, stdev=84.69, samples=65 iops : min= 3, max= 27, avg=11.58, stdev= 5.34, samples=65 lat (usec) : 50=0.13%, 100=2.60%, 250=0.52%, 500=0.13% lat (msec) : 2=1.56%, 4=4.69%, 10=8.07%, 20=9.24%, 50=38.80% lat (msec) : 100=28.39%, 250=5.86% cpu : usr=0.06%, sys=5.44%, ctx=1765, 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=178852: Sun Aug 9 19:06:14 2026 read: IOPS=11, BW=186KiB/s (190kB/s)(6256KiB/33642msec) clat (usec): min=37, max=192712, avg=48809.42, stdev=33131.61 lat (usec): min=37, max=192714, avg=48818.11, stdev=33134.12 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 15533], 20.00th=[ 26346], | 30.00th=[ 31851], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 49546], | 70.00th=[ 57410], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[105382], | 99.00th=[183501], 99.50th=[189793], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 44, max= 350, per=26.29%, avg=186.91, stdev=69.55, samples=66 iops : min= 2, max= 21, avg=10.91, stdev= 4.38, samples=66 write: IOPS=11, BW=179KiB/s (184kB/s)(6032KiB/33642msec); 0 zone resets clat (usec): min=1464, max=165377, avg=37767.94, stdev=32224.77 lat (usec): min=1465, max=165380, avg=37771.45, stdev=32224.24 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2474], 10.00th=[ 3949], 20.00th=[ 7242], | 30.00th=[ 14222], 40.00th=[ 24249], 50.00th=[ 30016], 60.00th=[ 39060], | 70.00th=[ 47973], 80.00th=[ 60031], 90.00th=[ 90702], 95.00th=[102237], | 99.00th=[137364], 99.50th=[143655], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 31, max= 509, per=23.82%, avg=178.42, stdev=89.49, samples=66 iops : min= 1, max= 31, avg=10.38, stdev= 5.63, samples=66 lat (usec) : 50=0.13%, 100=3.91%, 250=0.39%, 500=0.13% lat (msec) : 2=1.56%, 4=3.52%, 10=7.29%, 20=7.94%, 50=42.19% lat (msec) : 100=26.95%, 250=5.99% cpu : usr=0.05%, sys=5.31%, ctx=1778, 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=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=178854: Sun Aug 9 19:06:14 2026 read: IOPS=11, BW=184KiB/s (189kB/s)(6032KiB/32707msec) clat (usec): min=37, max=198189, avg=47342.00, stdev=31647.48 lat (usec): min=37, max=198190, avg=47375.11, stdev=31687.04 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 64], 10.00th=[ 95], 20.00th=[ 24249], | 30.00th=[ 31851], 40.00th=[ 38536], 50.00th=[ 43779], 60.00th=[ 49546], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[158335], 99.50th=[175113], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 22, max= 413, per=25.73%, avg=182.94, stdev=81.56, samples=64 iops : min= 1, max= 25, avg=10.67, stdev= 5.13, samples=64 write: IOPS=11, BW=191KiB/s (196kB/s)(6256KiB/32707msec); 0 zone resets clat (usec): min=1640, max=282480, avg=36660.50, stdev=39082.11 lat (usec): min=1642, max=282483, avg=36666.04, stdev=39083.10 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2057], 10.00th=[ 3261], 20.00th=[ 5604], | 30.00th=[ 8979], 40.00th=[ 15139], 50.00th=[ 23462], 60.00th=[ 32637], | 70.00th=[ 44827], 80.00th=[ 60031], 90.00th=[ 98042], 95.00th=[117965], | 99.00th=[158335], 99.50th=[208667], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 62, max= 542, per=25.89%, avg=193.95, stdev=91.06, samples=63 iops : min= 3, max= 33, avg=11.37, stdev= 5.76, samples=63 lat (usec) : 50=0.52%, 100=4.43%, 250=0.26%, 500=0.26% lat (msec) : 2=2.21%, 4=4.69%, 10=9.90%, 20=8.98%, 50=36.46% lat (msec) : 100=25.52%, 250=6.64%, 500=0.13% cpu : usr=0.07%, sys=5.46%, ctx=1723, 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=712KiB/s (729kB/s), 173KiB/s-186KiB/s (177kB/s-190kB/s), io=23.4MiB (24.5MB), run=32707-33642msec WRITE: bw=749KiB/s (767kB/s), 179KiB/s-197KiB/s (184kB/s-201kB/s), io=24.6MiB (25.8MB), run=32707-33642msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178847: Sun Aug 9 19:06:28 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(5920KiB/47008msec) clat (msec): min=8, max=294, avg=49.00, stdev=40.74 lat (msec): min=8, max=294, avg=49.00, stdev=40.74 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 53], 80.00th=[ 63], 90.00th=[ 102], 95.00th=[ 144], | 99.00th=[ 197], 99.50th=[ 243], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 445, per=25.13%, avg=127.64, stdev=72.68, samples=90 iops : min= 1, max= 27, avg= 7.27, stdev= 4.56, samples=90 write: IOPS=8, BW=135KiB/s (139kB/s)(6368KiB/47008msec); 0 zone resets clat (msec): min=17, max=283, avg=71.58, stdev=45.67 lat (msec): min=17, max=283, avg=71.58, stdev=45.67 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 44], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 80], 80.00th=[ 97], 90.00th=[ 134], 95.00th=[ 167], | 99.00th=[ 243], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 21, max= 350, per=25.32%, avg=135.23, stdev=71.97, samples=92 iops : min= 1, max= 21, avg= 7.73, stdev= 4.58, samples=92 lat (msec) : 10=0.26%, 20=9.24%, 50=45.18%, 100=30.21%, 250=14.58% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=2.01%, ctx=1279, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178848: Sun Aug 9 19:06:28 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(5744KiB/47128msec) clat (msec): min=7, max=233, avg=49.93, stdev=39.13 lat (msec): min=7, max=233, avg=49.94, stdev=39.17 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 58], 80.00th=[ 71], 90.00th=[ 109], 95.00th=[ 136], | 99.00th=[ 197], 99.50th=[ 215], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 30, max= 403, per=24.61%, avg=125.01, stdev=81.51, samples=89 iops : min= 1, max= 25, avg= 7.09, stdev= 5.18, samples=89 write: IOPS=8, BW=139KiB/s (142kB/s)(6544KiB/47128msec); 0 zone resets clat (msec): min=16, max=236, avg=71.14, stdev=42.98 lat (msec): min=16, max=236, avg=71.15, stdev=42.98 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 51], 50.00th=[ 62], 60.00th=[ 70], | 70.00th=[ 83], 80.00th=[ 103], 90.00th=[ 130], 95.00th=[ 159], | 99.00th=[ 207], 99.50th=[ 228], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 31, max= 381, per=26.09%, avg=139.33, stdev=73.31, samples=91 iops : min= 1, max= 23, avg= 7.99, stdev= 4.67, samples=91 lat (msec) : 10=0.13%, 20=9.38%, 50=41.93%, 100=31.77%, 250=16.80% cpu : usr=0.05%, sys=1.86%, ctx=1137, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178851: Sun Aug 9 19:06:28 2026 read: IOPS=8, BW=134KiB/s (137kB/s)(6256KiB/46771msec) clat (msec): min=7, max=289, avg=49.55, stdev=39.47 lat (msec): min=7, max=289, avg=49.55, stdev=39.47 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 67], 90.00th=[ 100], 95.00th=[ 128], | 99.00th=[ 232], 99.50th=[ 243], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 380, per=26.70%, avg=135.65, stdev=81.71, samples=91 iops : min= 1, max= 23, avg= 7.76, stdev= 5.15, samples=91 write: IOPS=8, BW=129KiB/s (132kB/s)(6032KiB/46771msec); 0 zone resets clat (msec): min=16, max=271, avg=71.57, stdev=46.47 lat (msec): min=16, max=271, avg=71.57, stdev=46.47 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 68], | 70.00th=[ 83], 80.00th=[ 110], 90.00th=[ 136], 95.00th=[ 169], | 99.00th=[ 234], 99.50th=[ 247], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 445, per=24.11%, avg=128.75, stdev=72.71, samples=92 iops : min= 1, max= 27, avg= 7.33, stdev= 4.64, samples=92 lat (msec) : 10=0.91%, 20=7.81%, 50=45.83%, 100=28.91%, 250=16.28% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.96%, ctx=1278, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178853: Sun Aug 9 19:06:28 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(6032KiB/47024msec) clat (msec): min=7, max=228, avg=50.28, stdev=38.92 lat (msec): min=7, max=228, avg=50.28, stdev=38.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 72], 90.00th=[ 100], 95.00th=[ 142], | 99.00th=[ 188], 99.50th=[ 213], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 30, max= 352, per=25.45%, avg=129.30, stdev=72.14, samples=90 iops : min= 1, max= 22, avg= 7.36, stdev= 4.65, samples=90 write: IOPS=8, BW=133KiB/s (136kB/s)(6256KiB/47024msec); 0 zone resets clat (msec): min=13, max=288, avg=71.17, stdev=47.14 lat (msec): min=13, max=288, avg=71.18, stdev=47.14 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 108], 90.00th=[ 146], 95.00th=[ 167], | 99.00th=[ 224], 99.50th=[ 232], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 413, per=24.75%, avg=132.15, stdev=77.34, samples=92 iops : min= 1, max= 25, avg= 7.53, stdev= 4.87, samples=92 lat (msec) : 10=0.65%, 20=8.72%, 50=46.74%, 100=27.99%, 250=15.76% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.88%, ctx=1252, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=508KiB/s (520kB/s), 122KiB/s-134KiB/s (125kB/s-137kB/s), io=23.4MiB (24.5MB), run=46771-47128msec WRITE: bw=535KiB/s (548kB/s), 129KiB/s-139KiB/s (132kB/s-142kB/s), io=24.6MiB (25.8MB), run=46771-47128msec 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=178868: Sun Aug 9 19:06:42 2026 read: IOPS=2, BW=2360KiB/s (2417kB/s)(7168KiB/3037msec) clat (usec): min=1813, max=398442, avg=195670.40, stdev=123718.04 lat (usec): min=1814, max=398444, avg=195672.17, stdev=123717.86 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 1811], 10.00th=[ 1811], 20.00th=[105382], | 30.00th=[177210], 40.00th=[177210], 50.00th=[204473], 60.00th=[229639], | 70.00th=[229639], 80.00th=[252707], 90.00th=[396362], 95.00th=[396362], | 99.00th=[396362], 99.50th=[396362], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 1825, max= 4055, per=47.11%, avg=2388.40, stdev=935.77, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1686KiB/s (1726kB/s)(5120KiB/3037msec); 0 zone resets clat (msec): min=169, max=568, avg=302.86, stdev=157.05 lat (msec): min=169, max=570, avg=303.93, stdev=157.80 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1984, max= 4079, per=38.05%, avg=2700.67, stdev=1193.99, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=18.12%, ctx=234, 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=178870: Sun Aug 9 19:06:42 2026 read: IOPS=0, BW=507KiB/s (519kB/s)(2048KiB/4039msec) clat (usec): min=664, max=141724, avg=71194.66, stdev=99744.42 lat (usec): min=665, max=141727, avg=71196.47, stdev=99745.45 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 668], | 30.00th=[ 668], 40.00th=[ 668], 50.00th=[ 668], 60.00th=[141558], | 70.00th=[141558], 80.00th=[141558], 90.00th=[141558], 95.00th=[141558], | 99.00th=[141558], 99.50th=[141558], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 1560, max= 2039, per=35.49%, avg=1799.50, stdev=338.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2535KiB/s (2596kB/s)(10.0MiB/4039msec); 0 zone resets clat (msec): min=86, max=896, avg=381.88, stdev=272.12 lat (msec): min=86, max=896, avg=382.00, stdev=272.09 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 133], | 30.00th=[ 157], 40.00th=[ 174], 50.00th=[ 326], 60.00th=[ 368], | 70.00th=[ 439], 80.00th=[ 493], 90.00th=[ 751], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1560, max= 7713, per=40.77%, avg=2893.67, stdev=2368.30, samples=6 iops : min= 1, max= 7, avg= 2.00, stdev= 2.45, samples=6 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 1000=16.67% cpu : usr=0.02%, sys=14.51%, ctx=128, 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=178872: Sun Aug 9 19:06:42 2026 read: IOPS=1, BW=1881KiB/s (1926kB/s)(6144KiB/3266msec) clat (usec): min=599, max=243252, avg=86180.13, stdev=110355.52 lat (usec): min=600, max=243253, avg=86181.53, stdev=110355.71 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 3523], | 30.00th=[ 3523], 40.00th=[ 4555], 50.00th=[ 4555], 60.00th=[ 57934], | 70.00th=[206570], 80.00th=[206570], 90.00th=[242222], 95.00th=[242222], | 99.00th=[242222], 99.50th=[242222], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 1984, max= 4063, per=53.16%, avg=2695.33, stdev=1184.75, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1881KiB/s (1926kB/s)(6144KiB/3266msec); 0 zone resets clat (msec): min=88, max=1222, avg=425.00, stdev=408.21 lat (msec): min=88, max=1223, avg=425.21, stdev=408.49 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 300], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1799, max= 2039, per=27.65%, avg=1962.25, stdev=111.37, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 10=8.33%, 100=16.67%, 250=25.00%, 500=25.00% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=13.81%, ctx=156, 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=178873: Sun Aug 9 19:06:42 2026 read: IOPS=1, BW=1481KiB/s (1517kB/s)(5120KiB/3456msec) clat (usec): min=490, max=285169, avg=107966.67, stdev=147548.66 lat (usec): min=491, max=285170, avg=107967.79, stdev=147548.61 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 553], 40.00th=[ 553], 50.00th=[ 553], 60.00th=[ 553], | 70.00th=[252707], 80.00th=[252707], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 2039, max= 6095, per=80.22%, avg=4067.00, stdev=2868.03, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2074KiB/s (2124kB/s)(7168KiB/3456msec); 0 zone resets clat (msec): min=187, max=971, avg=385.08, stdev=275.42 lat (msec): min=187, max=972, avg=385.21, stdev=275.44 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 194], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 288], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 451], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1615, max= 2039, per=27.35%, avg=1941.60, stdev=184.00, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=25.00%, 500=41.67%, 1000=8.33% cpu : usr=0.06%, sys=15.48%, ctx=158, 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=5071KiB/s (5192kB/s), 507KiB/s-2360KiB/s (519kB/s-2417kB/s), io=20.0MiB (20.0MB), run=3037-4039msec WRITE: bw=7099KiB/s (7269kB/s), 1686KiB/s-2535KiB/s (1726kB/s-2596kB/s), io=28.0MiB (29.4MB), run=3037-4039msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178869: Sun Aug 9 19:06:43 2026 read: IOPS=1, BW=1530KiB/s (1566kB/s)(7168KiB/4686msec) clat (msec): min=65, max=1234, avg=456.02, stdev=436.59 lat (msec): min=65, max=1234, avg=456.02, stdev=436.59 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 83], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 347], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 760], 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= 1712, max= 3984, per=54.01%, avg=2360.20, stdev=918.46, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1093KiB/s (1119kB/s)(5120KiB/4686msec); 0 zone resets clat (msec): min=140, max=420, avg=271.38, stdev=106.42 lat (msec): min=140, max=420, avg=271.58, stdev=106.50 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 247], 60.00th=[ 247], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 2031, max= 4055, per=55.17%, avg=3375.00, stdev=1163.97, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.03%, ctx=65, 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=178871: Sun Aug 9 19:06:43 2026 read: IOPS=0, BW=439KiB/s (450kB/s)(2048KiB/4662msec) clat (msec): min=162, max=542, avg=352.21, stdev=268.60 lat (msec): min=162, max=542, avg=352.22, stdev=268.60 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 163], 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= 1992, max= 2015, per=45.85%, avg=2003.50, stdev=16.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2196KiB/s (2249kB/s)(10.0MiB/4662msec); 0 zone resets clat (msec): min=120, max=989, avg=373.84, stdev=245.98 lat (msec): min=120, max=989, avg=374.05, stdev=245.95 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 134], | 30.00th=[ 275], 40.00th=[ 279], 50.00th=[ 321], 60.00th=[ 342], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 523], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1992, max= 4055, per=42.54%, avg=2602.57, stdev=986.90, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=4.74%, ctx=85, 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=178874: Sun Aug 9 19:06:43 2026 read: IOPS=1, BW=1387KiB/s (1420kB/s)(6144KiB/4431msec) clat (msec): min=101, max=138, avg=122.81, stdev=13.71 lat (msec): min=101, max=138, avg=122.81, stdev=13.71 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 120], 50.00th=[ 120], 60.00th=[ 131], | 70.00th=[ 133], 80.00th=[ 133], 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= 1992, max= 4039, per=61.50%, avg=2687.33, stdev=1170.74, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1387KiB/s (1420kB/s)(6144KiB/4431msec); 0 zone resets clat (msec): min=135, max=1673, avg=583.97, stdev=554.18 lat (msec): min=136, max=1673, avg=584.08, stdev=554.17 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 472], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 1992, max= 2039, per=33.01%, avg=2019.25, stdev=20.73, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.06%, ctx=137, 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=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=178875: Sun Aug 9 19:06:43 2026 read: IOPS=1, BW=1237KiB/s (1267kB/s)(5120KiB/4138msec) clat (msec): min=58, max=707, avg=278.01, stdev=268.85 lat (msec): min=58, max=707, avg=278.01, stdev=268.85 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 176], 60.00th=[ 176], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 2035, max= 4063, per=62.10%, avg=2713.67, stdev=1168.56, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1732KiB/s (1774kB/s)(7168KiB/4138msec); 0 zone resets clat (msec): min=137, max=795, avg=373.18, stdev=221.74 lat (msec): min=137, max=795, avg=373.38, stdev=221.94 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 213], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 330], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 523], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1851, max= 4079, per=45.78%, avg=2800.80, stdev=1150.81, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=6.77%, ctx=140, 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=4370KiB/s (4475kB/s), 439KiB/s-1530KiB/s (450kB/s-1566kB/s), io=20.0MiB (20.0MB), run=4138-4686msec WRITE: bw=6119KiB/s (6265kB/s), 1093KiB/s-2196KiB/s (1119kB/s-2249kB/s), io=28.0MiB (29.4MB), run=4138-4686msec 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=178887: Sun Aug 9 19:06:57 2026 read: IOPS=1, BW=5283KiB/s (5410kB/s)(12.0MiB/2326msec) clat (msec): min=580, max=1063, avg=774.44, stdev=255.53 lat (msec): min=580, max=1063, avg=774.44, stdev=255.53 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8047, max= 8110, per=100.00%, avg=8078.50, stdev=44.55, 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=0.39%, sys=10.32%, ctx=284, 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=178888: Sun Aug 9 19:06:57 2026 read: IOPS=0, BW=1297KiB/s (1329kB/s)(4096KiB/3157msec) clat (nsec): min=905853k, max=905853k, avg=905852786.00, stdev= 0.00 lat (nsec): min=905856k, max=905856k, avg=905855911.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] 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 write: IOPS=0, BW=2595KiB/s (2657kB/s)(8192KiB/3157msec); 0 zone resets clat (msec): min=936, max=1308, avg=1122.38, stdev=263.54 lat (msec): min=936, max=1310, avg=1123.52, stdev=264.85 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 1318], | 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= 8110, max= 8110, per=78.14%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.42%, ctx=185, 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=178889: Sun Aug 9 19:06:57 2026 write: IOPS=0, BW=3987KiB/s (4083kB/s)(12.0MiB/3082msec); 0 zone resets clat (msec): min=320, max=1717, avg=1025.02, stdev=698.47 lat (msec): min=321, max=1718, avg=1026.53, stdev=698.61 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8110, max= 8110, per=78.14%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.66%, ctx=39, 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=178890: Sun Aug 9 19:06:57 2026 write: IOPS=1, BW=4443KiB/s (4549kB/s)(12.0MiB/2766msec); 0 zone resets clat (msec): min=199, max=1473, avg=921.11, stdev=653.79 lat (msec): min=199, max=1473, avg=921.56, stdev=653.77 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8078, max= 8143, per=78.14%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.64%, ctx=38, 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=5190KiB/s (5314kB/s), 1297KiB/s-5283KiB/s (1329kB/s-5410kB/s), io=16.0MiB (16.8MB), run=2326-3157msec WRITE: bw=10.1MiB/s (10.6MB/s), 2595KiB/s-4443KiB/s (2657kB/s-4549kB/s), io=32.0MiB (33.6MB), run=2766-3157msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178882: Sun Aug 9 19:06:57 2026 read: IOPS=1, BW=4523KiB/s (4631kB/s)(12.0MiB/2717msec) clat (msec): min=727, max=1175, avg=905.15, stdev=238.08 lat (msec): min=727, max=1175, avg=905.15, stdev=238.08 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.84%, ctx=39, 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=178883: Sun Aug 9 19:06:57 2026 read: IOPS=0, BW=1056KiB/s (1082kB/s)(4096KiB/3877msec) clat (nsec): min=393451k, max=393451k, avg=393450656.00, stdev= 0.00 lat (nsec): min=393453k, max=393453k, avg=393453438.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 393], 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= 7211, max= 7211, per=100.00%, avg=7211.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2113KiB/s (2164kB/s)(8192KiB/3877msec); 0 zone resets clat (msec): min=1301, max=2143, avg=1722.27, stdev=595.43 lat (msec): min=1301, max=2143, avg=1722.81, stdev=595.65 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 2140], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8159, max= 8159, per=96.54%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.19%, ctx=52, 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=178884: Sun Aug 9 19:06:57 2026 write: IOPS=0, BW=4049KiB/s (4146kB/s)(12.0MiB/3035msec); 0 zone resets clat (msec): min=532, max=1613, avg=1011.14, stdev=551.00 lat (msec): min=532, max=1613, avg=1011.44, stdev=550.91 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 531], 10.00th=[ 531], 20.00th=[ 531], | 30.00th=[ 531], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8143, max= 8159, per=96.45%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.23%, sys=3.59%, ctx=49, 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=178885: Sun Aug 9 19:06:57 2026 write: IOPS=0, BW=4080KiB/s (4178kB/s)(12.0MiB/3012msec); 0 zone resets clat (msec): min=293, max=1953, avg=1003.24, stdev=855.36 lat (msec): min=294, max=1953, avg=1003.69, stdev=855.33 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 1955], 80.00th=[ 1955], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 8143, max= 8143, per=96.36%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.12%, ctx=79, 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=4226KiB/s (4327kB/s), 1056KiB/s-4523KiB/s (1082kB/s-4631kB/s), io=16.0MiB (16.8MB), run=2717-3877msec WRITE: bw=8452KiB/s (8655kB/s), 2113KiB/s-4080KiB/s (2164kB/s-4178kB/s), io=32.0MiB (33.6MB), run=3012-3877msec