== sanity test 398b: DIO and buffer IO race ============== 10:30:41 (1787581841) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.12827 s, 7.1 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=179429: Mon Aug 24 10:33:25 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5992KiB/143993msec) clat (usec): min=41, max=1013.9k, avg=52208.12, stdev=41608.05 lat (usec): min=41, max=1013.9k, avg=52212.15, stdev=41608.76 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 9110], 10.00th=[ 18744], | 20.00th=[ 26608], 30.00th=[ 32375], 40.00th=[ 38536], | 50.00th=[ 44827], 60.00th=[ 51643], 70.00th=[ 62653], | 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[ 113771], | 99.00th=[ 162530], 99.50th=[ 189793], 99.90th=[ 263193], | 99.95th=[1010828], 99.99th=[1010828] bw ( KiB/s): min= 7, max= 91, per=25.09%, avg=41.65, stdev=16.05, samples=280 iops : min= 1, max= 22, avg= 9.75, stdev= 4.04, samples=280 write: IOPS=10, BW=43.7KiB/s (44.8kB/s)(6296KiB/143993msec); 0 zone resets clat (usec): min=892, max=335958, avg=41523.34, stdev=41317.74 lat (usec): min=893, max=335959, avg=41531.93, stdev=41334.08 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1450], 10.00th=[ 2114], 20.00th=[ 5145], | 30.00th=[ 10028], 40.00th=[ 20579], 50.00th=[ 31851], 60.00th=[ 41157], | 70.00th=[ 53740], 80.00th=[ 70779], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[173016], 99.50th=[200279], 99.90th=[254804], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 150, per=25.15%, avg=43.77, stdev=19.88, samples=280 iops : min= 1, max= 37, avg=10.28, stdev= 5.00, samples=280 lat (usec) : 50=0.10%, 100=1.73%, 250=0.29%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.92%, 4=3.48%, 10=7.06%, 20=7.81%, 50=36.88% lat (msec) : 100=29.10%, 250=8.24%, 500=0.23%, 2000=0.03% cpu : usr=0.08%, sys=4.66%, ctx=6846, 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=179430: Mon Aug 24 10:33:25 2026 read: IOPS=10, BW=41.5KiB/s (42.5kB/s)(5940KiB/143255msec) clat (usec): min=40, max=337874, avg=52330.27, stdev=35909.26 lat (usec): min=40, max=337876, avg=52339.83, stdev=35908.45 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 13042], 10.00th=[ 19792], 20.00th=[ 26608], | 30.00th=[ 31851], 40.00th=[ 38536], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 61604], 80.00th=[ 72877], 90.00th=[ 92799], 95.00th=[113771], | 99.00th=[191890], 99.50th=[217056], 99.90th=[316670], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 6, max= 102, per=24.82%, avg=41.20, stdev=17.05, samples=281 iops : min= 1, max= 25, avg= 9.64, stdev= 4.27, samples=281 write: IOPS=11, BW=44.3KiB/s (45.4kB/s)(6348KiB/143255msec); 0 zone resets clat (usec): min=1031, max=922273, avg=41019.64, stdev=48281.84 lat (usec): min=1032, max=922274, avg=41032.27, stdev=48295.10 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1434], 10.00th=[ 2245], 20.00th=[ 5211], | 30.00th=[ 9372], 40.00th=[ 18482], 50.00th=[ 27919], 60.00th=[ 36963], | 70.00th=[ 50594], 80.00th=[ 69731], 90.00th=[100140], 95.00th=[122160], | 99.00th=[193987], 99.50th=[238027], 99.90th=[337642], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 6, max= 166, per=25.41%, avg=44.22, stdev=22.98, samples=280 iops : min= 1, max= 41, avg=10.40, stdev= 5.79, samples=280 lat (usec) : 50=0.13%, 100=1.30%, 250=0.23%, 500=0.10%, 1000=0.03% lat (msec) : 2=4.52%, 4=3.91%, 10=7.81%, 20=8.14%, 50=37.43% lat (msec) : 100=27.47%, 250=8.69%, 500=0.20%, 1000=0.03% cpu : usr=0.08%, sys=4.60%, ctx=6737, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179431: Mon Aug 24 10:33:25 2026 read: IOPS=10, BW=42.0KiB/s (43.0kB/s)(6028KiB/140340msec) clat (usec): min=36, max=225080, avg=50447.34, stdev=31171.33 lat (usec): min=37, max=225082, avg=50456.50, stdev=31175.73 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 12911], 10.00th=[ 19268], 20.00th=[ 25560], | 30.00th=[ 31589], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 61080], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[106431], | 99.00th=[147850], 99.50th=[177210], 99.90th=[223347], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 7, max= 103, per=25.76%, avg=42.76, stdev=17.61, samples=275 iops : min= 1, max= 25, avg=10.03, stdev= 4.44, samples=275 write: IOPS=11, BW=44.6KiB/s (45.7kB/s)(6260KiB/140340msec); 0 zone resets clat (usec): min=1023, max=918094, avg=40780.81, stdev=48087.63 lat (usec): min=1023, max=918097, avg=40785.66, stdev=48087.50 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1549], 10.00th=[ 2409], 20.00th=[ 4621], | 30.00th=[ 8586], 40.00th=[ 18482], 50.00th=[ 27657], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 68682], 90.00th=[ 95945], 95.00th=[125305], | 99.00th=[183501], 99.50th=[235930], 99.90th=[312476], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 95, per=25.61%, avg=44.55, stdev=19.11, samples=274 iops : min= 1, max= 23, avg=10.48, stdev= 4.80, samples=274 lat (usec) : 50=0.07%, 100=1.56%, 250=0.13%, 750=0.03%, 1000=0.10% lat (msec) : 2=4.00%, 4=4.82%, 10=7.62%, 20=8.53%, 50=36.88% lat (msec) : 100=27.99%, 250=8.14%, 500=0.10%, 1000=0.03% cpu : usr=0.09%, sys=4.59%, ctx=6768, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179432: Mon Aug 24 10:33:25 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6052KiB/142304msec) clat (usec): min=41, max=269796, avg=52833.05, stdev=34246.83 lat (usec): min=41, max=269797, avg=52835.17, stdev=34246.35 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 11994], 10.00th=[ 19792], 20.00th=[ 26346], | 30.00th=[ 32900], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 62653], 80.00th=[ 74974], 90.00th=[ 96994], 95.00th=[113771], | 99.00th=[175113], 99.50th=[196084], 99.90th=[252707], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 88, per=25.46%, avg=42.26, stdev=16.13, samples=279 iops : min= 1, max= 22, avg= 9.91, stdev= 4.07, samples=279 write: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6236KiB/142304msec); 0 zone resets clat (usec): min=1055, max=912644, avg=39756.42, stdev=45620.09 lat (usec): min=1056, max=912646, avg=39764.03, stdev=45616.89 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1500], 10.00th=[ 2212], 20.00th=[ 4490], | 30.00th=[ 8979], 40.00th=[ 19006], 50.00th=[ 27657], 60.00th=[ 38011], | 70.00th=[ 52167], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[122160], | 99.00th=[170918], 99.50th=[196084], 99.90th=[337642], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 127, per=25.04%, avg=43.57, stdev=19.17, samples=279 iops : min= 1, max= 31, avg=10.23, stdev= 4.81, samples=279 lat (usec) : 50=0.07%, 100=1.63%, 250=0.23%, 750=0.07%, 1000=0.03% lat (msec) : 2=4.39%, 4=4.79%, 10=6.77%, 20=7.94%, 50=35.94% lat (msec) : 100=29.52%, 250=8.50%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=4.64%, ctx=6844, 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=167KiB/s (171kB/s), 41.5KiB/s-42.0KiB/s (42.5kB/s-43.0kB/s), io=23.4MiB (24.6MB), run=140340-143993msec WRITE: bw=175KiB/s (179kB/s), 43.7KiB/s-44.6KiB/s (44.8kB/s-45.7kB/s), io=24.6MiB (25.7MB), run=140340-143993msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179424: Mon Aug 24 10:34:02 2026 read: IOPS=8, BW=33.1KiB/s (33.9kB/s)(5992KiB/181064msec) clat (msec): min=6, max=1061, avg=47.94, stdev=53.20 lat (msec): min=6, max=1061, avg=47.95, stdev=53.20 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 107], 95.00th=[ 142], | 99.00th=[ 230], 99.50th=[ 292], 99.90th=[ 384], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 151, per=25.81%, avg=34.07, stdev=25.92, samples=342 iops : min= 1, max= 37, avg= 7.84, stdev= 6.52, samples=342 write: IOPS=8, BW=34.8KiB/s (35.6kB/s)(6296KiB/181064msec); 0 zone resets clat (msec): min=10, max=446, avg=69.15, stdev=51.57 lat (msec): min=10, max=446, avg=69.16, stdev=51.57 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 42], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 84], 80.00th=[ 106], 90.00th=[ 138], 95.00th=[ 171], | 99.00th=[ 241], 99.50th=[ 279], 99.90th=[ 380], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 135, per=25.43%, avg=35.09, stdev=24.43, samples=349 iops : min= 1, max= 33, avg= 8.09, stdev= 6.14, samples=349 lat (msec) : 10=1.60%, 20=15.53%, 50=41.44%, 100=24.67%, 250=16.02% lat (msec) : 500=0.72%, 2000=0.03% cpu : usr=0.06%, sys=1.71%, ctx=4883, 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=179425: Mon Aug 24 10:34:02 2026 read: IOPS=8, BW=32.7KiB/s (33.5kB/s)(5940KiB/181505msec) clat (msec): min=5, max=963, avg=47.37, stdev=49.06 lat (msec): min=6, max=963, avg=47.37, stdev=49.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 70], 90.00th=[ 107], 95.00th=[ 144], | 99.00th=[ 199], 99.50th=[ 241], 99.90th=[ 309], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 159, per=25.51%, avg=33.68, stdev=26.60, samples=341 iops : min= 1, max= 39, avg= 7.74, stdev= 6.68, samples=341 write: IOPS=8, BW=34.0KiB/s (35.8kB/s)(6348KiB/181505msec); 0 zone resets clat (msec): min=10, max=424, avg=69.80, stdev=53.01 lat (msec): min=10, max=424, avg=69.80, stdev=53.01 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 35], 40.00th=[ 43], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 105], 90.00th=[ 140], 95.00th=[ 178], | 99.00th=[ 264], 99.50th=[ 300], 99.90th=[ 351], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 119, per=25.24%, avg=34.84, stdev=24.13, samples=352 iops : min= 1, max= 29, avg= 8.03, stdev= 6.06, samples=352 lat (msec) : 10=1.99%, 20=15.43%, 50=40.66%, 100=25.42%, 250=15.79% lat (msec) : 500=0.68%, 1000=0.03% cpu : usr=0.06%, sys=1.73%, ctx=4983, 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=179426: Mon Aug 24 10:34:02 2026 read: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6028KiB/180530msec) clat (msec): min=6, max=383, avg=49.06, stdev=47.01 lat (msec): min=6, max=383, avg=49.06, stdev=47.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 70], 90.00th=[ 113], 95.00th=[ 148], | 99.00th=[ 218], 99.50th=[ 264], 99.90th=[ 317], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 161, per=25.77%, avg=34.02, stdev=25.76, samples=343 iops : min= 1, max= 40, avg= 7.83, stdev= 6.47, samples=343 write: IOPS=8, BW=34.7KiB/s (35.5kB/s)(6260KiB/180530msec); 0 zone resets clat (msec): min=13, max=962, avg=67.86, stdev=56.85 lat (msec): min=13, max=962, avg=67.86, stdev=56.84 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 51], 60.00th=[ 63], | 70.00th=[ 81], 80.00th=[ 101], 90.00th=[ 136], 95.00th=[ 171], | 99.00th=[ 275], 99.50th=[ 313], 99.90th=[ 447], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 127, per=25.38%, avg=35.03, stdev=25.22, samples=346 iops : min= 1, max= 31, avg= 8.08, stdev= 6.34, samples=346 lat (msec) : 10=1.69%, 20=14.97%, 50=41.80%, 100=25.33%, 250=15.17% lat (msec) : 500=1.01%, 1000=0.03% cpu : usr=0.05%, sys=1.72%, ctx=4957, 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=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=179427: Mon Aug 24 10:34:02 2026 read: IOPS=8, BW=33.6KiB/s (34.4kB/s)(6052KiB/180053msec) clat (msec): min=5, max=395, avg=47.37, stdev=46.44 lat (msec): min=5, max=395, avg=47.37, stdev=46.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 51], 80.00th=[ 70], 90.00th=[ 107], 95.00th=[ 144], | 99.00th=[ 228], 99.50th=[ 259], 99.90th=[ 393], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 167, per=25.92%, avg=34.21, stdev=26.37, samples=344 iops : min= 1, max= 41, avg= 7.87, stdev= 6.61, samples=344 write: IOPS=8, BW=34.6KiB/s (35.5kB/s)(6236KiB/180053msec); 0 zone resets clat (msec): min=11, max=962, avg=69.23, stdev=55.24 lat (msec): min=11, max=962, avg=69.24, stdev=55.24 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 43], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 84], 80.00th=[ 105], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 262], 99.50th=[ 313], 99.90th=[ 359], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 136, per=25.39%, avg=35.04, stdev=24.31, samples=346 iops : min= 1, max= 34, avg= 8.08, stdev= 6.12, samples=346 lat (msec) : 10=2.08%, 20=15.04%, 50=40.95%, 100=25.36%, 250=15.69% lat (msec) : 500=0.85%, 1000=0.03% cpu : usr=0.06%, sys=1.70%, 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=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=132KiB/s (135kB/s), 32.7KiB/s-33.6KiB/s (33.5kB/s-34.4kB/s), io=23.4MiB (24.6MB), run=180053-181505msec WRITE: bw=139KiB/s (142kB/s), 34.6KiB/s-34.0KiB/s (35.5kB/s-35.8kB/s), io=24.6MiB (25.7MB), run=180053-181505msec 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=179481: Mon Aug 24 10:34:50 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5920KiB/34418msec) clat (usec): min=42, max=207307, avg=50865.90, stdev=31354.63 lat (usec): min=42, max=207309, avg=50877.38, stdev=31346.40 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 82], 10.00th=[ 18482], 20.00th=[ 26870], | 30.00th=[ 33817], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 53740], | 70.00th=[ 62129], 80.00th=[ 73925], 90.00th=[ 91751], 95.00th=[107480], | 99.00th=[143655], 99.50th=[179307], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 351, per=25.46%, avg=171.88, stdev=64.78, samples=68 iops : min= 1, max= 21, avg= 9.96, stdev= 4.09, samples=68 write: IOPS=11, BW=185KiB/s (189kB/s)(6368KiB/34418msec); 0 zone resets clat (usec): min=1637, max=193989, avg=38324.35, stdev=36730.00 lat (usec): min=1640, max=193989, avg=38329.22, stdev=36729.09 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2376], 10.00th=[ 4555], 20.00th=[ 6521], | 30.00th=[ 10552], 40.00th=[ 18744], 50.00th=[ 27919], 60.00th=[ 34866], | 70.00th=[ 48497], 80.00th=[ 68682], 90.00th=[ 90702], 95.00th=[113771], | 99.00th=[152044], 99.50th=[185598], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 30, max= 442, per=25.99%, avg=184.56, stdev=78.59, samples=68 iops : min= 1, max= 27, avg=10.75, stdev= 4.96, samples=68 lat (usec) : 50=0.39%, 100=2.99%, 250=0.39%, 1000=0.13% lat (msec) : 2=1.56%, 4=3.26%, 10=10.55%, 20=7.55%, 50=37.50% lat (msec) : 100=27.34%, 250=8.33% cpu : usr=0.08%, sys=5.60%, ctx=1824, 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=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=179482: Mon Aug 24 10:34:50 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(5744KiB/34463msec) clat (usec): min=45, max=213512, avg=47078.30, stdev=31083.28 lat (usec): min=45, max=213514, avg=47080.93, stdev=31083.05 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 76], 10.00th=[ 157], 20.00th=[ 25822], | 30.00th=[ 31851], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 51119], | 70.00th=[ 57934], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[ 99091], | 99.00th=[149947], 99.50th=[208667], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 59, max= 317, per=25.05%, avg=169.12, stdev=69.81, samples=67 iops : min= 3, max= 19, avg= 9.79, stdev= 4.37, samples=67 write: IOPS=11, BW=190KiB/s (194kB/s)(6544KiB/34463msec); 0 zone resets clat (usec): min=1657, max=282802, avg=42660.25, stdev=40803.83 lat (usec): min=1660, max=282805, avg=42664.13, stdev=40803.02 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2671], 10.00th=[ 4359], 20.00th=[ 7504], | 30.00th=[ 11338], 40.00th=[ 19530], 50.00th=[ 32375], 60.00th=[ 43254], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[101188], 95.00th=[121111], | 99.00th=[156238], 99.50th=[202376], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 349, per=26.62%, avg=189.03, stdev=78.80, samples=68 iops : min= 1, max= 21, avg=11.03, stdev= 4.97, samples=68 lat (usec) : 50=0.39%, 100=3.39%, 250=1.04%, 500=0.39% lat (msec) : 2=1.17%, 4=3.26%, 10=9.77%, 20=9.64%, 50=33.46% lat (msec) : 100=29.95%, 250=7.42%, 500=0.13% cpu : usr=0.08%, sys=5.42%, ctx=1788, 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=179483: Mon Aug 24 10:34:50 2026 read: IOPS=11, BW=176KiB/s (181kB/s)(6256KiB/35445msec) clat (usec): min=42, max=227896, avg=50611.44, stdev=33475.37 lat (usec): min=43, max=227897, avg=50625.41, stdev=33487.11 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 82], 10.00th=[ 832], 20.00th=[ 28967], | 30.00th=[ 33817], 40.00th=[ 39584], 50.00th=[ 45351], 60.00th=[ 53740], | 70.00th=[ 61080], 80.00th=[ 73925], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[177210], 99.50th=[196084], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 60, max= 319, per=26.17%, avg=176.66, stdev=62.87, samples=70 iops : min= 3, max= 19, avg=10.24, stdev= 3.95, samples=70 write: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35445msec); 0 zone resets clat (usec): min=1517, max=190098, avg=40991.86, stdev=36852.41 lat (usec): min=1518, max=190101, avg=40995.24, stdev=36852.40 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2999], 10.00th=[ 4686], 20.00th=[ 7767], | 30.00th=[ 11338], 40.00th=[ 20317], 50.00th=[ 30278], 60.00th=[ 42730], | 70.00th=[ 55837], 80.00th=[ 71828], 90.00th=[ 93848], 95.00th=[112722], | 99.00th=[149947], 99.50th=[166724], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 350, per=23.83%, avg=169.19, stdev=86.84, samples=70 iops : min= 1, max= 21, avg= 9.79, stdev= 5.45, samples=70 lat (usec) : 50=0.13%, 100=3.26%, 250=0.78%, 500=0.26%, 750=0.52% lat (usec) : 1000=0.39% lat (msec) : 2=0.78%, 4=2.99%, 10=9.77%, 20=7.29%, 50=35.29% lat (msec) : 100=31.51%, 250=7.03% cpu : usr=0.06%, sys=5.60%, ctx=1836, 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=179484: Mon Aug 24 10:34:50 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6032KiB/35092msec) clat (usec): min=53, max=184414, avg=49252.75, stdev=31409.08 lat (usec): min=55, max=184415, avg=49254.30, stdev=31409.04 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 72], 10.00th=[ 116], 20.00th=[ 26346], | 30.00th=[ 34341], 40.00th=[ 40633], 50.00th=[ 46400], 60.00th=[ 53216], | 70.00th=[ 59507], 80.00th=[ 71828], 90.00th=[ 85459], 95.00th=[101188], | 99.00th=[154141], 99.50th=[177210], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 351, per=25.25%, avg=170.42, stdev=72.67, samples=69 iops : min= 1, max= 21, avg= 9.86, stdev= 4.56, samples=69 write: IOPS=11, BW=178KiB/s (183kB/s)(6256KiB/35092msec); 0 zone resets clat (usec): min=1556, max=177461, avg=41497.61, stdev=38038.15 lat (usec): min=1560, max=177465, avg=41500.63, stdev=38038.14 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2540], 10.00th=[ 4080], 20.00th=[ 7963], | 30.00th=[ 12125], 40.00th=[ 19530], 50.00th=[ 31065], 60.00th=[ 43254], | 70.00th=[ 54789], 80.00th=[ 70779], 90.00th=[ 99091], 95.00th=[117965], | 99.00th=[152044], 99.50th=[160433], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 31, max= 351, per=25.07%, avg=178.01, stdev=73.94, samples=69 iops : min= 1, max= 21, avg=10.35, stdev= 4.61, samples=69 lat (usec) : 100=4.30%, 250=1.17%, 500=0.13%, 750=0.13% lat (msec) : 2=1.43%, 4=3.39%, 10=8.20%, 20=8.85%, 50=33.72% lat (msec) : 100=30.99%, 250=7.68% cpu : usr=0.08%, sys=5.35%, ctx=1841, 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=676KiB/s (692kB/s), 167KiB/s-176KiB/s (171kB/s-181kB/s), io=23.4MiB (24.5MB), run=34418-35445msec WRITE: bw=711KiB/s (728kB/s), 170KiB/s-190KiB/s (174kB/s-194kB/s), io=24.6MiB (25.8MB), run=34418-35445msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179477: Mon Aug 24 10:35:01 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5920KiB/46651msec) clat (msec): min=7, max=323, avg=50.88, stdev=48.09 lat (msec): min=7, max=323, avg=50.89, stdev=48.09 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 53], 80.00th=[ 77], 90.00th=[ 114], 95.00th=[ 153], | 99.00th=[ 222], 99.50th=[ 288], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 444, per=24.79%, avg=127.19, stdev=87.25, samples=88 iops : min= 1, max= 27, avg= 7.18, stdev= 5.49, samples=88 write: IOPS=8, BW=137KiB/s (140kB/s)(6368KiB/46651msec); 0 zone resets clat (msec): min=13, max=268, avg=68.85, stdev=48.28 lat (msec): min=13, max=268, avg=68.85, stdev=48.27 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 61], | 70.00th=[ 81], 80.00th=[ 108], 90.00th=[ 134], 95.00th=[ 163], | 99.00th=[ 251], 99.50th=[ 268], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 21, max= 380, per=25.79%, avg=138.99, stdev=86.58, samples=88 iops : min= 1, max= 23, avg= 7.91, stdev= 5.47, samples=88 lat (msec) : 10=1.04%, 20=12.24%, 50=44.27%, 100=24.09%, 250=17.58% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.79%, ctx=1256, 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=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=179478: Mon Aug 24 10:35:01 2026 read: IOPS=7, BW=124KiB/s (127kB/s)(5744KiB/46347msec) clat (msec): min=8, max=227, avg=47.70, stdev=39.56 lat (msec): min=8, max=227, avg=47.70, stdev=39.56 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 99], 95.00th=[ 138], | 99.00th=[ 201], 99.50th=[ 209], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 412, per=24.80%, avg=127.24, stdev=81.29, samples=88 iops : min= 1, max= 25, avg= 7.18, stdev= 5.13, samples=88 write: IOPS=8, BW=141KiB/s (145kB/s)(6544KiB/46347msec); 0 zone resets clat (msec): min=14, max=303, avg=71.28, stdev=46.29 lat (msec): min=14, max=303, avg=71.29, stdev=46.29 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 106], 90.00th=[ 142], 95.00th=[ 169], | 99.00th=[ 218], 99.50th=[ 222], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 411, per=26.90%, avg=144.99, stdev=86.78, samples=88 iops : min= 1, max= 25, avg= 8.30, stdev= 5.50, samples=88 lat (msec) : 10=0.78%, 20=8.85%, 50=45.57%, 100=29.04%, 250=15.63% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.89%, ctx=1228, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179479: Mon Aug 24 10:35:01 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6256KiB/45992msec) clat (msec): min=9, max=313, avg=48.29, stdev=43.18 lat (msec): min=9, max=313, avg=48.29, stdev=43.19 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 49], 80.00th=[ 66], 90.00th=[ 104], 95.00th=[ 138], | 99.00th=[ 226], 99.50th=[ 232], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 478, per=27.08%, avg=138.93, stdev=99.59, samples=89 iops : min= 1, max= 29, avg= 7.91, stdev= 6.29, samples=89 write: IOPS=8, BW=131KiB/s (134kB/s)(6032KiB/45992msec); 0 zone resets clat (msec): min=14, max=271, avg=71.34, stdev=48.79 lat (msec): min=14, max=271, avg=71.34, stdev=48.79 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 69], | 70.00th=[ 84], 80.00th=[ 107], 90.00th=[ 144], 95.00th=[ 174], | 99.00th=[ 232], 99.50th=[ 266], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 441, per=25.01%, avg=134.80, stdev=81.25, samples=88 iops : min= 1, max= 27, avg= 7.64, stdev= 5.16, samples=88 lat (msec) : 10=0.78%, 20=11.59%, 50=45.96%, 100=24.74%, 250=16.41% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.78%, ctx=1172, 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=179480: Mon Aug 24 10:35:01 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(6032KiB/46672msec) clat (msec): min=7, max=247, avg=49.73, stdev=45.50 lat (msec): min=7, max=247, avg=49.73, stdev=45.50 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 73], 90.00th=[ 113], 95.00th=[ 155], | 99.00th=[ 222], 99.50th=[ 243], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 30, max= 416, per=25.00%, avg=128.25, stdev=89.01, samples=91 iops : min= 1, max= 26, avg= 7.24, stdev= 5.67, samples=91 write: IOPS=8, BW=134KiB/s (137kB/s)(6256KiB/46672msec); 0 zone resets clat (msec): min=14, max=327, avg=70.77, stdev=49.03 lat (msec): min=14, max=327, avg=70.77, stdev=49.03 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 86], 80.00th=[ 109], 90.00th=[ 142], 95.00th=[ 165], | 99.00th=[ 251], 99.50th=[ 255], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 441, per=25.47%, avg=137.30, stdev=90.80, samples=89 iops : min= 1, max= 27, avg= 7.82, stdev= 5.75, samples=89 lat (msec) : 10=0.91%, 20=12.76%, 50=44.14%, 100=23.83%, 250=17.84% lat (msec) : 500=0.52% cpu : usr=0.07%, sys=1.86%, ctx=1246, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=513KiB/s (526kB/s), 124KiB/s-136KiB/s (127kB/s-139kB/s), io=23.4MiB (24.5MB), run=45992-46672msec WRITE: bw=540KiB/s (553kB/s), 131KiB/s-141KiB/s (134kB/s-145kB/s), io=24.6MiB (25.8MB), run=45992-46672msec 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=179499: Mon Aug 24 10:35:17 2026 read: IOPS=2, BW=2356KiB/s (2412kB/s)(7168KiB/3043msec) clat (usec): min=855, max=297090, avg=205560.58, stdev=103863.34 lat (usec): min=856, max=297092, avg=205562.11, stdev=103863.73 clat percentiles (usec): | 1.00th=[ 857], 5.00th=[ 857], 10.00th=[ 857], 20.00th=[154141], | 30.00th=[193987], 40.00th=[193987], 50.00th=[244319], 60.00th=[261096], | 70.00th=[261096], 80.00th=[287310], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 1741, max= 4023, per=68.60%, avg=2715.00, stdev=1070.84, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1683KiB/s (1723kB/s)(5120KiB/3043msec); 0 zone resets clat (msec): min=257, max=391, avg=310.55, stdev=54.21 lat (msec): min=257, max=391, avg=310.66, stdev=54.20 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 334], 80.00th=[ 334], 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= 1957, max= 3482, per=44.82%, avg=2483.33, stdev=865.29, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=66.67% cpu : usr=0.00%, sys=19.63%, ctx=248, 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=179500: Mon Aug 24 10:35:17 2026 read: IOPS=0, BW=396KiB/s (405kB/s)(2048KiB/5174msec) clat (usec): min=567, max=271383, avg=135975.73, stdev=191495.83 lat (usec): min=568, max=271387, avg=135978.05, stdev=191497.65 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 570], 60.00th=[270533], | 70.00th=[270533], 80.00th=[270533], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 1575, max= 2027, per=45.50%, avg=1801.00, stdev=319.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1979KiB/s (2027kB/s)(10.0MiB/5174msec); 0 zone resets clat (msec): min=79, max=1336, avg=461.48, stdev=421.34 lat (msec): min=81, max=1336, avg=461.88, stdev=421.14 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 104], | 30.00th=[ 105], 40.00th=[ 213], 50.00th=[ 224], 60.00th=[ 380], | 70.00th=[ 567], 80.00th=[ 634], 90.00th=[ 978], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1957, max= 4000, per=48.64%, avg=2695.40, stdev=972.25, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=15.62%, ctx=145, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179501: Mon Aug 24 10:35:17 2026 read: IOPS=1, BW=1801KiB/s (1844kB/s)(6144KiB/3411msec) clat (usec): min=669, max=432933, avg=177728.32, stdev=161943.62 lat (usec): min=671, max=432934, avg=177729.49, stdev=161943.30 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 7439], | 30.00th=[ 7439], 40.00th=[166724], 50.00th=[166724], 60.00th=[217056], | 70.00th=[242222], 80.00th=[242222], 90.00th=[434111], 95.00th=[434111], | 99.00th=[434111], 99.50th=[434111], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 1957, max= 3482, per=59.69%, avg=2362.50, stdev=746.70, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1801KiB/s (1844kB/s)(6144KiB/3411msec); 0 zone resets clat (msec): min=181, max=519, avg=363.59, stdev=120.06 lat (msec): min=181, max=519, avg=363.69, stdev=120.07 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 363], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1741, max= 4000, per=52.54%, avg=2911.25, stdev=1201.27, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=33.33%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=17.01%, ctx=194, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179502: Mon Aug 24 10:35:17 2026 read: IOPS=1, BW=1163KiB/s (1190kB/s)(5120KiB/4404msec) clat (msec): min=177, max=466, avg=305.48, stdev=110.61 lat (msec): min=177, max=466, avg=305.48, stdev=110.61 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 3482, max= 4000, per=94.52%, avg=3741.00, stdev=366.28, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1628KiB/s (1667kB/s)(7168KiB/4404msec); 0 zone resets clat (msec): min=126, max=957, avg=393.85, stdev=295.06 lat (msec): min=126, max=957, avg=393.99, stdev=295.09 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 134], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 326], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 592], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1635, max= 4000, per=49.05%, avg=2717.60, stdev=1143.08, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.05%, sys=16.19%, ctx=223, 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=3958KiB/s (4053kB/s), 396KiB/s-2356KiB/s (405kB/s-2412kB/s), io=20.0MiB (20.0MB), run=3043-5174msec WRITE: bw=5542KiB/s (5675kB/s), 1628KiB/s-1979KiB/s (1667kB/s-2027kB/s), io=28.0MiB (29.4MB), run=3043-5174msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179504: Mon Aug 24 10:35:18 2026 read: IOPS=1, BW=1419KiB/s (1453kB/s)(7168KiB/5053msec) clat (msec): min=113, max=1484, avg=524.92, stdev=481.36 lat (msec): min=113, max=1484, avg=524.92, stdev=481.36 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 451], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 709], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1858, max= 2048, per=48.79%, avg=1977.60, stdev=81.60, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=1013KiB/s (1038kB/s)(5120KiB/5053msec); 0 zone resets clat (msec): min=89, max=203, avg=138.74, stdev=43.94 lat (msec): min=89, max=203, avg=138.86, stdev=43.93 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 90], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 203], 95.00th=[ 203], | 99.00th=[ 203], 99.50th=[ 203], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 2048, max= 4047, per=53.71%, avg=3047.50, stdev=1413.51, samples=2 iops : min= 2, max= 3, avg= 2.50, stdev= 0.71, samples=2 lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=5.38%, 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=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=179505: Mon Aug 24 10:35:18 2026 read: IOPS=0, BW=437KiB/s (448kB/s)(2048KiB/4684msec) clat (msec): min=136, max=521, avg=328.97, stdev=272.50 lat (msec): min=136, max=521, avg=328.97, stdev=272.50 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1928, max= 2048, per=49.05%, avg=1988.00, stdev=84.85, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2186KiB/s (2239kB/s)(10.0MiB/4684msec); 0 zone resets clat (msec): min=127, max=936, avg=394.85, stdev=233.55 lat (msec): min=127, max=937, avg=394.95, stdev=233.55 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 165], | 30.00th=[ 241], 40.00th=[ 317], 50.00th=[ 321], 60.00th=[ 338], | 70.00th=[ 485], 80.00th=[ 510], 90.00th=[ 514], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1858, max= 4071, per=52.98%, avg=3006.17, stdev=1156.37, samples=6 iops : min= 1, max= 3, avg= 2.17, stdev= 0.98, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=6.81%, ctx=105, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179506: Mon Aug 24 10:35:18 2026 read: IOPS=1, BW=1543KiB/s (1580kB/s)(6144KiB/3981msec) clat (msec): min=69, max=428, avg=182.16, stdev=136.17 lat (msec): min=69, max=428, avg=182.16, stdev=136.17 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 105], 50.00th=[ 105], 60.00th=[ 144], | 70.00th=[ 251], 80.00th=[ 251], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 2048, max= 4079, per=81.35%, avg=3297.00, stdev=1093.07, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1543KiB/s (1580kB/s)(6144KiB/3981msec); 0 zone resets clat (msec): min=137, max=962, avg=478.23, stdev=354.95 lat (msec): min=137, max=962, avg=478.33, stdev=354.95 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 558], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1954, max= 2767, per=38.81%, avg=2202.00, stdev=379.04, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=3.77%, ctx=60, 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=179507: Mon Aug 24 10:35:18 2026 read: IOPS=1, BW=1125KiB/s (1152kB/s)(5120KiB/4551msec) clat (msec): min=95, max=672, avg=279.76, stdev=241.10 lat (msec): min=95, max=672, avg=279.76, stdev=241.10 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 351], 80.00th=[ 351], 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= 1858, max= 2048, per=49.25%, avg=1996.25, stdev=92.51, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 write: IOPS=1, BW=1575KiB/s (1613kB/s)(7168KiB/4551msec); 0 zone resets clat (msec): min=121, max=838, avg=439.48, stdev=245.91 lat (msec): min=121, max=838, avg=439.59, stdev=245.90 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 259], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 447], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 642], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1858, max= 2035, per=34.55%, avg=1960.40, stdev=74.49, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=6.95%, ctx=142, 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=4053KiB/s (4150kB/s), 437KiB/s-1543KiB/s (448kB/s-1580kB/s), io=20.0MiB (20.0MB), run=3981-5053msec WRITE: bw=5674KiB/s (5810kB/s), 1013KiB/s-2186KiB/s (1038kB/s-2239kB/s), io=28.0MiB (29.4MB), run=3981-5053msec 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=179513: Mon Aug 24 10:35:31 2026 read: IOPS=0, BW=4026KiB/s (4123kB/s)(12.0MiB/3052msec) clat (msec): min=563, max=1699, avg=958.94, stdev=641.41 lat (msec): min=563, max=1699, avg=958.94, stdev=641.41 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8047, max= 8159, per=100.00%, avg=8103.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.85%, ctx=62, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179514: Mon Aug 24 10:35:31 2026 read: IOPS=0, BW=1022KiB/s (1046kB/s)(4096KiB/4008msec) clat (nsec): min=1482.9M, max=1482.9M, avg=1482851717.00, stdev= 0.00 lat (nsec): min=1482.9M, max=1482.9M, avg=1482854859.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1485], 5.00th=[ 1485], 10.00th=[ 1485], 20.00th=[ 1485], | 30.00th=[ 1485], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] 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 write: IOPS=0, BW=2044KiB/s (2093kB/s)(8192KiB/4008msec); 0 zone resets clat (msec): min=776, max=1600, avg=1188.60, stdev=582.78 lat (msec): min=777, max=1602, avg=1189.89, stdev=583.59 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8159, max= 8159, per=99.80%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.05%, sys=3.64%, ctx=56, 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=179516: Mon Aug 24 10:35:31 2026 write: IOPS=1, BW=7394KiB/s (7571kB/s)(12.0MiB/1662msec); 0 zone resets clat (msec): min=269, max=960, avg=511.52, stdev=388.88 lat (msec): min=305, max=960, avg=524.37, stdev=377.89 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 6187, max= 8110, per=87.44%, avg=7148.50, stdev=1359.77, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.24%, sys=8.61%, ctx=64, 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=179517: Mon Aug 24 10:35:31 2026 write: IOPS=0, BW=4030KiB/s (4127kB/s)(12.0MiB/3049msec); 0 zone resets clat (msec): min=222, max=2098, avg=939.28, stdev=1013.56 lat (msec): min=223, max=2099, avg=939.83, stdev=1013.55 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 6320, max= 8110, per=88.26%, avg=7215.00, stdev=1265.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=4.59%, ctx=49, 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=4088KiB/s (4186kB/s), 1022KiB/s-4026KiB/s (1046kB/s-4123kB/s), io=16.0MiB (16.8MB), run=3052-4008msec WRITE: bw=8176KiB/s (8372kB/s), 2044KiB/s-7394KiB/s (2093kB/s-7571kB/s), io=32.0MiB (33.6MB), run=1662-4008msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179518: Mon Aug 24 10:35:32 2026 read: IOPS=0, BW=4077KiB/s (4175kB/s)(12.0MiB/3014msec) clat (msec): min=860, max=1167, avg=983.74, stdev=162.38 lat (msec): min=860, max=1167, avg=983.74, stdev=162.38 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=12.94%, ctx=285, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179519: Mon Aug 24 10:35:32 2026 read: IOPS=0, BW=1062KiB/s (1088kB/s)(4096KiB/3856msec) clat (nsec): min=997334k, max=997334k, avg=997333920.00, stdev= 0.00 lat (nsec): min=997337k, max=997337k, avg=997336568.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 995], 5.00th=[ 995], 10.00th=[ 995], 20.00th=[ 995], | 30.00th=[ 995], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 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= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2124KiB/s (2175kB/s)(8192KiB/3856msec); 0 zone resets clat (msec): min=612, max=2055, avg=1333.85, stdev=1019.95 lat (msec): min=614, max=2055, avg=1334.82, stdev=1019.24 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 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= 8159, max= 8159, per=96.02%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=5.01%, ctx=210, 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=179520: Mon Aug 24 10:35:32 2026 write: IOPS=0, BW=3256KiB/s (3334kB/s)(12.0MiB/3774msec); 0 zone resets clat (msec): min=450, max=1877, avg=1191.79, stdev=714.96 lat (msec): min=451, max=1877, avg=1192.49, stdev=714.90 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 8126, max= 8159, per=95.83%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.09%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179521: Mon Aug 24 10:35:32 2026 write: IOPS=0, BW=3733KiB/s (3822kB/s)(12.0MiB/3292msec); 0 zone resets clat (msec): min=256, max=2332, avg=974.59, stdev=1176.61 lat (msec): min=256, max=2332, avg=976.23, stdev=1175.67 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min=16094, max=16094, per=100.00%, avg=16094.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=4.01%, ctx=65, 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=4249KiB/s (4351kB/s), 1062KiB/s-4077KiB/s (1088kB/s-4175kB/s), io=16.0MiB (16.8MB), run=3014-3856msec WRITE: bw=8498KiB/s (8702kB/s), 2124KiB/s-3733KiB/s (2175kB/s-3822kB/s), io=32.0MiB (33.6MB), run=3292-3856msec