== sanity test 398b: DIO and buffer IO race ============== 22:13:08 (1789524788) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.05 s, 16.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179134: Tue Sep 15 22:14:19 2026 read: IOPS=24, BW=97.9KiB/s (100kB/s)(5992KiB/61192msec) clat (usec): min=34, max=676278, avg=22923.30, stdev=22188.88 lat (usec): min=34, max=676278, avg=22924.22, stdev=22188.90 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 7111], 10.00th=[ 9241], 20.00th=[ 11994], | 30.00th=[ 14353], 40.00th=[ 17171], 50.00th=[ 19792], 60.00th=[ 22676], | 70.00th=[ 26084], 80.00th=[ 30802], 90.00th=[ 38536], 95.00th=[ 47449], | 99.00th=[ 72877], 99.50th=[ 98042], 99.90th=[147850], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 6, max= 175, per=24.87%, avg=97.47, stdev=26.01, samples=121 iops : min= 1, max= 43, avg=23.82, stdev= 6.55, samples=121 write: IOPS=25, BW=103KiB/s (105kB/s)(6296KiB/61192msec); 0 zone resets clat (usec): min=662, max=104148, avg=16917.03, stdev=15908.04 lat (usec): min=663, max=104149, avg=16918.58, stdev=15908.04 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 1205], 10.00th=[ 1598], 20.00th=[ 2704], | 30.00th=[ 4883], 40.00th=[ 9634], 50.00th=[ 13435], 60.00th=[ 16712], | 70.00th=[ 21103], 80.00th=[ 28443], 90.00th=[ 39060], 95.00th=[ 47973], | 99.00th=[ 69731], 99.50th=[ 82314], 99.90th=[103285], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 23, max= 191, per=25.19%, avg=103.28, stdev=33.74, samples=120 iops : min= 5, max= 47, avg=25.28, stdev= 8.46, samples=120 lat (usec) : 50=0.33%, 100=0.78%, 250=0.33%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.68% lat (msec) : 2=6.38%, 4=6.77%, 10=11.78%, 20=32.29%, 50=36.49% lat (msec) : 100=3.78%, 250=0.23%, 750=0.03% cpu : usr=0.11%, sys=11.88%, ctx=7116, 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=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=179135: Tue Sep 15 22:14:19 2026 read: IOPS=24, BW=99.5KiB/s (102kB/s)(5940KiB/59720msec) clat (usec): min=34, max=126322, avg=21708.95, stdev=13329.85 lat (usec): min=35, max=126323, avg=21710.19, stdev=13329.59 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 7504], 10.00th=[ 9372], 20.00th=[ 11469], | 30.00th=[ 14091], 40.00th=[ 16319], 50.00th=[ 19268], 60.00th=[ 22414], | 70.00th=[ 25560], 80.00th=[ 30016], 90.00th=[ 36439], 95.00th=[ 44827], | 99.00th=[ 68682], 99.50th=[ 92799], 99.90th=[109577], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 6, max= 167, per=25.24%, avg=98.96, stdev=28.08, samples=118 iops : min= 1, max= 41, avg=24.19, stdev= 7.05, samples=118 write: IOPS=26, BW=106KiB/s (109kB/s)(6348KiB/59720msec); 0 zone resets clat (usec): min=668, max=667865, avg=17149.51, stdev=23012.80 lat (usec): min=669, max=667866, avg=17152.71, stdev=23011.93 clat percentiles (usec): | 1.00th=[ 922], 5.00th=[ 1188], 10.00th=[ 1647], 20.00th=[ 2638], | 30.00th=[ 4293], 40.00th=[ 8455], 50.00th=[ 12518], 60.00th=[ 16712], | 70.00th=[ 21103], 80.00th=[ 28443], 90.00th=[ 39584], 95.00th=[ 49546], | 99.00th=[ 64750], 99.50th=[ 73925], 99.90th=[175113], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 39, max= 208, per=25.93%, avg=106.33, stdev=31.42, samples=117 iops : min= 9, max= 52, avg=26.05, stdev= 7.91, samples=117 lat (usec) : 50=0.33%, 100=0.85%, 250=0.16%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.78% lat (msec) : 2=6.38%, 4=7.52%, 10=12.96%, 20=31.09%, 50=35.94% lat (msec) : 100=3.71%, 250=0.13%, 750=0.03% cpu : usr=0.12%, sys=12.20%, ctx=7143, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179136: Tue Sep 15 22:14:19 2026 read: IOPS=24, BW=99.2KiB/s (102kB/s)(6028KiB/60789msec) clat (usec): min=37, max=103508, avg=21899.00, stdev=13353.90 lat (usec): min=37, max=103509, avg=21900.08, stdev=13353.92 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 7439], 10.00th=[ 9372], 20.00th=[ 11863], | 30.00th=[ 13698], 40.00th=[ 16057], 50.00th=[ 19006], 60.00th=[ 22152], | 70.00th=[ 26346], 80.00th=[ 30540], 90.00th=[ 38011], 95.00th=[ 45876], | 99.00th=[ 68682], 99.50th=[ 74974], 99.90th=[ 98042], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 23, max= 175, per=25.42%, avg=99.66, stdev=27.93, samples=119 iops : min= 5, max= 43, avg=24.37, stdev= 7.00, samples=119 write: IOPS=25, BW=103KiB/s (105kB/s)(6260KiB/60789msec); 0 zone resets clat (usec): min=648, max=736803, avg=17598.69, stdev=24967.48 lat (usec): min=649, max=736808, avg=17601.49, stdev=24966.96 clat percentiles (usec): | 1.00th=[ 865], 5.00th=[ 1139], 10.00th=[ 1500], 20.00th=[ 2474], | 30.00th=[ 4359], 40.00th=[ 8848], 50.00th=[ 12911], 60.00th=[ 16581], | 70.00th=[ 21627], 80.00th=[ 29492], 90.00th=[ 40633], 95.00th=[ 50594], | 99.00th=[ 77071], 99.50th=[ 91751], 99.90th=[127402], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 31, max= 184, per=25.21%, avg=103.35, stdev=29.40, samples=119 iops : min= 7, max= 46, avg=25.29, stdev= 7.39, samples=119 lat (usec) : 50=0.26%, 100=0.98%, 250=0.59%, 500=0.03%, 750=0.23% lat (usec) : 1000=1.07% lat (msec) : 2=6.97%, 4=6.51%, 10=11.75%, 20=32.29%, 50=35.03% lat (msec) : 100=4.10%, 250=0.16%, 750=0.03% cpu : usr=0.11%, sys=11.77%, ctx=6961, 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=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=179137: Tue Sep 15 22:14:19 2026 read: IOPS=24, BW=99.1KiB/s (101kB/s)(6052KiB/61060msec) clat (usec): min=35, max=101953, avg=21658.02, stdev=13516.93 lat (usec): min=35, max=101954, avg=21660.50, stdev=13518.33 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 7046], 10.00th=[ 9241], 20.00th=[ 11600], | 30.00th=[ 13698], 40.00th=[ 16188], 50.00th=[ 19006], 60.00th=[ 21365], | 70.00th=[ 25822], 80.00th=[ 30278], 90.00th=[ 37487], 95.00th=[ 44303], | 99.00th=[ 72877], 99.50th=[ 80217], 99.90th=[ 99091], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 47, max= 152, per=25.45%, avg=99.76, stdev=25.32, samples=120 iops : min= 11, max= 38, avg=24.39, stdev= 6.38, samples=120 write: IOPS=25, BW=102KiB/s (105kB/s)(6236KiB/61060msec); 0 zone resets clat (usec): min=642, max=716703, avg=17988.03, stdev=24496.05 lat (usec): min=642, max=716703, avg=17991.50, stdev=24497.53 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 1188], 10.00th=[ 1565], 20.00th=[ 2606], | 30.00th=[ 4621], 40.00th=[ 8979], 50.00th=[ 13566], 60.00th=[ 17433], | 70.00th=[ 22938], 80.00th=[ 30278], 90.00th=[ 41157], 95.00th=[ 49546], | 99.00th=[ 73925], 99.50th=[ 87557], 99.90th=[170918], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 19, max= 198, per=24.84%, avg=101.84, stdev=33.26, samples=121 iops : min= 4, max= 49, avg=24.92, stdev= 8.35, samples=121 lat (usec) : 50=0.26%, 100=1.20%, 250=0.29%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.62% lat (msec) : 2=6.87%, 4=6.77%, 10=11.49%, 20=32.03%, 50=36.07% lat (msec) : 100=4.13%, 250=0.10%, 750=0.03% cpu : usr=0.10%, sys=11.79%, ctx=7016, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=392KiB/s (402kB/s), 97.9KiB/s-99.5KiB/s (100kB/s-102kB/s), io=23.4MiB (24.6MB), run=59720-61192msec WRITE: bw=411KiB/s (421kB/s), 102KiB/s-106KiB/s (105kB/s-109kB/s), io=24.6MiB (25.7MB), run=59720-61192msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179130: Tue Sep 15 22:14:38 2026 read: IOPS=18, BW=74.5KiB/s (76.3kB/s)(5992KiB/80458msec) clat (msec): min=3, max=688, avg=20.80, stdev=24.39 lat (msec): min=3, max=688, avg=20.81, stdev=24.39 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 46], 95.00th=[ 59], | 99.00th=[ 81], 99.50th=[ 91], 99.90th=[ 134], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 215, per=25.23%, avg=74.44, stdev=44.22, samples=158 iops : min= 1, max= 53, avg=18.13, stdev=11.10, samples=158 write: IOPS=19, BW=78.3KiB/s (80.1kB/s)(6296KiB/80458msec); 0 zone resets clat (msec): min=7, max=205, avg=31.16, stdev=21.51 lat (msec): min=7, max=205, avg=31.16, stdev=21.51 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 45], 90.00th=[ 58], 95.00th=[ 72], | 99.00th=[ 110], 99.50th=[ 144], 99.90th=[ 169], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 7, max= 223, per=25.32%, avg=78.23, stdev=41.77, samples=158 iops : min= 1, max= 55, avg=19.08, stdev=10.50, samples=158 lat (msec) : 4=0.13%, 10=14.84%, 20=37.76%, 50=35.22%, 100=11.13% lat (msec) : 250=0.88%, 750=0.03% cpu : usr=0.08%, sys=4.32%, ctx=4880, 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=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=179131: Tue Sep 15 22:14:38 2026 read: IOPS=18, BW=73.3KiB/s (75.0kB/s)(5940KiB/81049msec) clat (msec): min=3, max=722, avg=21.48, stdev=25.80 lat (msec): min=3, max=722, avg=21.48, stdev=25.80 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 47], 95.00th=[ 61], | 99.00th=[ 91], 99.50th=[ 101], 99.90th=[ 140], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 216, per=24.88%, avg=73.41, stdev=45.06, samples=160 iops : min= 1, max= 54, avg=17.87, stdev=11.32, samples=160 write: IOPS=19, BW=78.3KiB/s (80.2kB/s)(6348KiB/81049msec); 0 zone resets clat (msec): min=7, max=168, avg=30.81, stdev=20.51 lat (msec): min=7, max=168, avg=30.82, stdev=20.51 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 44], 90.00th=[ 58], 95.00th=[ 71], | 99.00th=[ 108], 99.50th=[ 118], 99.90th=[ 155], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 7, max= 215, per=25.40%, avg=78.48, stdev=40.82, samples=160 iops : min= 1, max= 53, avg=19.14, stdev=10.24, samples=160 lat (msec) : 4=0.03%, 10=15.89%, 20=35.68%, 50=36.46%, 100=11.07% lat (msec) : 250=0.85%, 750=0.03% cpu : usr=0.10%, sys=4.25%, ctx=4929, 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=179132: Tue Sep 15 22:14:38 2026 read: IOPS=18, BW=74.5KiB/s (76.3kB/s)(6028KiB/80878msec) clat (msec): min=3, max=129, avg=20.71, stdev=17.13 lat (msec): min=3, max=129, avg=20.71, stdev=17.13 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 45], 95.00th=[ 61], | 99.00th=[ 82], 99.50th=[ 90], 99.90th=[ 103], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 23, max= 230, per=25.24%, avg=74.47, stdev=42.21, samples=159 iops : min= 5, max= 57, avg=18.13, stdev=10.60, samples=159 write: IOPS=19, BW=77.4KiB/s (79.3kB/s)(6260KiB/80878msec); 0 zone resets clat (msec): min=7, max=737, avg=31.57, stdev=27.80 lat (msec): min=7, max=737, avg=31.58, stdev=27.80 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 46], 90.00th=[ 59], 95.00th=[ 71], | 99.00th=[ 109], 99.50th=[ 134], 99.90th=[ 209], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 200, per=25.02%, avg=77.33, stdev=42.79, samples=159 iops : min= 1, max= 50, avg=18.85, stdev=10.74, samples=159 lat (msec) : 4=0.13%, 10=14.84%, 20=37.24%, 50=35.90%, 100=10.90% lat (msec) : 250=0.94%, 750=0.03% cpu : usr=0.10%, sys=4.16%, ctx=4933, 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=179133: Tue Sep 15 22:14:38 2026 read: IOPS=18, BW=74.5KiB/s (76.3kB/s)(6052KiB/81200msec) clat (msec): min=3, max=139, avg=21.12, stdev=18.35 lat (msec): min=3, max=139, avg=21.12, stdev=18.35 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 32], 90.00th=[ 48], 95.00th=[ 58], | 99.00th=[ 90], 99.50th=[ 101], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 8, max= 215, per=25.36%, avg=74.81, stdev=42.82, samples=159 iops : min= 2, max= 53, avg=18.21, stdev=10.76, samples=159 write: IOPS=19, BW=76.8KiB/s (78.6kB/s)(6236KiB/81200msec); 0 zone resets clat (msec): min=6, max=738, avg=31.42, stdev=27.26 lat (msec): min=6, max=738, avg=31.42, stdev=27.26 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 59], 95.00th=[ 74], | 99.00th=[ 105], 99.50th=[ 118], 99.90th=[ 163], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 23, max= 199, per=24.81%, avg=76.65, stdev=40.83, samples=160 iops : min= 5, max= 49, avg=18.68, stdev=10.25, samples=160 lat (msec) : 4=0.23%, 10=15.49%, 20=35.87%, 50=36.07%, 100=11.33% lat (msec) : 250=0.98%, 750=0.03% cpu : usr=0.09%, sys=4.21%, ctx=4977, 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=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=296KiB/s (303kB/s), 73.3KiB/s-74.5KiB/s (75.0kB/s-76.3kB/s), io=23.4MiB (24.6MB), run=80458-81200msec WRITE: bw=310KiB/s (317kB/s), 76.8KiB/s-78.3KiB/s (78.6kB/s-80.2kB/s), io=24.6MiB (25.7MB), run=80458-81200msec 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=179167: Tue Sep 15 22:15:01 2026 read: IOPS=21, BW=349KiB/s (357kB/s)(5920KiB/16979msec) clat (usec): min=36, max=87553, avg=23689.56, stdev=14923.37 lat (usec): min=37, max=87554, avg=23690.45, stdev=14923.35 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 72], 10.00th=[ 262], 20.00th=[12780], | 30.00th=[15795], 40.00th=[18220], 50.00th=[21890], 60.00th=[25560], | 70.00th=[29492], 80.00th=[34341], 90.00th=[43779], 95.00th=[51643], | 99.00th=[70779], 99.50th=[74974], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 223, max= 510, per=24.70%, avg=343.55, stdev=80.05, samples=33 iops : min= 13, max= 31, avg=20.82, stdev= 5.00, samples=33 write: IOPS=23, BW=375KiB/s (384kB/s)(6368KiB/16979msec); 0 zone resets clat (usec): min=1420, max=125468, avg=20309.92, stdev=17710.13 lat (usec): min=1421, max=125469, avg=20311.52, stdev=17710.18 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2114], 10.00th=[ 2868], 20.00th=[ 4490], | 30.00th=[ 7832], 40.00th=[ 12911], 50.00th=[ 16909], 60.00th=[ 20317], | 70.00th=[ 24773], 80.00th=[ 32375], 90.00th=[ 42730], 95.00th=[ 54789], | 99.00th=[ 80217], 99.50th=[ 94897], 99.90th=[125305], 99.95th=[125305], | 99.99th=[125305] bw ( KiB/s): min= 127, max= 603, per=25.56%, avg=373.88, stdev=101.21, samples=33 iops : min= 7, max= 37, avg=22.73, stdev= 6.41, samples=33 lat (usec) : 50=0.39%, 100=2.99%, 250=1.30%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.08%, 4=6.90%, 10=9.90%, 20=28.52%, 50=41.41% lat (msec) : 100=6.12%, 250=0.13% cpu : usr=0.06%, sys=13.73%, ctx=1929, 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=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=179168: Tue Sep 15 22:15:01 2026 read: IOPS=20, BW=334KiB/s (342kB/s)(5744KiB/17217msec) clat (usec): min=32, max=109570, avg=25058.57, stdev=15307.33 lat (usec): min=33, max=109570, avg=25059.43, stdev=15307.35 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 94], 10.00th=[ 11076], 20.00th=[ 13829], | 30.00th=[ 17171], 40.00th=[ 19530], 50.00th=[ 22676], 60.00th=[ 26346], | 70.00th=[ 29754], 80.00th=[ 34866], 90.00th=[ 44303], 95.00th=[ 51119], | 99.00th=[ 87557], 99.50th=[ 93848], 99.90th=[109577], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 85, max= 479, per=23.96%, avg=333.32, stdev=93.35, samples=34 iops : min= 5, max= 29, avg=20.18, stdev= 5.73, samples=34 write: IOPS=23, BW=380KiB/s (389kB/s)(6544KiB/17217msec); 0 zone resets clat (usec): min=1182, max=132150, avg=19682.64, stdev=16899.71 lat (usec): min=1183, max=132152, avg=19684.55, stdev=16899.82 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1909], 10.00th=[ 2540], 20.00th=[ 4555], | 30.00th=[ 6915], 40.00th=[ 11469], 50.00th=[ 15664], 60.00th=[ 20579], | 70.00th=[ 25297], 80.00th=[ 32375], 90.00th=[ 43254], 95.00th=[ 49546], | 99.00th=[ 66323], 99.50th=[ 71828], 99.90th=[132645], 99.95th=[132645], | 99.99th=[132645] bw ( KiB/s): min= 255, max= 606, per=26.00%, avg=380.41, stdev=76.81, samples=34 iops : min= 15, max= 37, avg=23.12, stdev= 4.92, samples=34 lat (usec) : 50=0.39%, 100=1.95%, 250=1.30% lat (msec) : 2=2.86%, 4=6.64%, 10=10.16%, 20=27.73%, 50=44.01% lat (msec) : 100=4.69%, 250=0.26% cpu : usr=0.12%, sys=13.22%, ctx=1897, 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=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=179169: Tue Sep 15 22:15:01 2026 read: IOPS=23, BW=378KiB/s (387kB/s)(6256KiB/16566msec) clat (usec): min=46, max=97794, avg=23577.51, stdev=14779.82 lat (usec): min=47, max=97795, avg=23578.46, stdev=14779.81 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 82], 10.00th=[ 7504], 20.00th=[13304], | 30.00th=[16057], 40.00th=[18482], 50.00th=[22152], 60.00th=[25560], | 70.00th=[28705], 80.00th=[33162], 90.00th=[40109], 95.00th=[48497], | 99.00th=[73925], 99.50th=[78119], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 253, max= 544, per=27.19%, avg=378.16, stdev=89.24, samples=32 iops : min= 15, max= 34, avg=23.00, stdev= 5.71, samples=32 write: IOPS=22, BW=364KiB/s (373kB/s)(6032KiB/16566msec); 0 zone resets clat (usec): min=853, max=111509, avg=19399.67, stdev=17942.13 lat (usec): min=855, max=111509, avg=19407.77, stdev=17944.21 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2278], 10.00th=[ 2933], 20.00th=[ 4817], | 30.00th=[ 7111], 40.00th=[ 10290], 50.00th=[ 14746], 60.00th=[ 18744], | 70.00th=[ 22414], 80.00th=[ 32637], 90.00th=[ 42206], 95.00th=[ 55313], | 99.00th=[ 90702], 99.50th=[103285], 99.90th=[111674], 99.95th=[111674], | 99.99th=[111674] bw ( KiB/s): min= 96, max= 542, per=24.55%, avg=359.09, stdev=109.21, samples=32 iops : min= 6, max= 33, avg=21.81, stdev= 6.89, samples=32 lat (usec) : 50=0.52%, 100=2.73%, 250=1.30%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.69%, 4=6.51%, 10=12.24%, 20=28.52%, 50=40.89% lat (msec) : 100=5.08%, 250=0.26% cpu : usr=0.07%, sys=13.55%, ctx=1989, 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=179170: Tue Sep 15 22:15:01 2026 read: IOPS=22, BW=365KiB/s (373kB/s)(6032KiB/16539msec) clat (usec): min=38, max=103350, avg=23681.34, stdev=16744.40 lat (usec): min=39, max=103351, avg=23682.91, stdev=16744.74 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 70], 10.00th=[ 112], 20.00th=[ 11863], | 30.00th=[ 15795], 40.00th=[ 18482], 50.00th=[ 21365], 60.00th=[ 24773], | 70.00th=[ 29492], 80.00th=[ 34866], 90.00th=[ 43779], 95.00th=[ 54264], | 99.00th=[ 80217], 99.50th=[ 89654], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 160, max= 569, per=25.91%, avg=360.34, stdev=98.38, samples=32 iops : min= 10, max= 35, avg=21.87, stdev= 6.28, samples=32 write: IOPS=23, BW=378KiB/s (387kB/s)(6256KiB/16539msec); 0 zone resets clat (usec): min=1106, max=132467, avg=19208.27, stdev=18106.55 lat (usec): min=1107, max=132468, avg=19209.82, stdev=18106.61 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1926], 10.00th=[ 3130], 20.00th=[ 4490], | 30.00th=[ 6521], 40.00th=[ 9503], 50.00th=[ 14222], 60.00th=[ 18744], | 70.00th=[ 23725], 80.00th=[ 32375], 90.00th=[ 43254], 95.00th=[ 53740], | 99.00th=[ 72877], 99.50th=[120062], 99.90th=[132645], 99.95th=[132645], | 99.99th=[132645] bw ( KiB/s): min= 159, max= 672, per=25.85%, avg=378.12, stdev=106.70, samples=32 iops : min= 9, max= 42, avg=23.00, stdev= 6.71, samples=32 lat (usec) : 50=0.65%, 100=3.39%, 250=2.34%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.99%, 4=5.86%, 10=13.28%, 20=25.65%, 50=38.80% lat (msec) : 100=6.12%, 250=0.39% cpu : usr=0.10%, sys=13.28%, ctx=1882, 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=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=1391KiB/s (1425kB/s), 334KiB/s-378KiB/s (342kB/s-387kB/s), io=23.4MiB (24.5MB), run=16539-17217msec WRITE: bw=1464KiB/s (1499kB/s), 364KiB/s-380KiB/s (373kB/s-389kB/s), io=24.6MiB (25.8MB), run=16539-17217msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179171: Tue Sep 15 22:15:06 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(5920KiB/22207msec) clat (msec): min=4, max=137, avg=23.13, stdev=18.92 lat (msec): min=4, max=137, avg=23.14, stdev=18.92 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 21], | 70.00th=[ 24], 80.00th=[ 34], 90.00th=[ 49], 95.00th=[ 65], | 99.00th=[ 90], 99.50th=[ 120], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 64, max= 640, per=25.22%, avg=266.61, stdev=146.46, samples=44 iops : min= 4, max= 40, avg=16.11, stdev= 9.20, samples=44 write: IOPS=17, BW=287KiB/s (294kB/s)(6368KiB/22207msec); 0 zone resets clat (msec): min=8, max=139, avg=34.19, stdev=21.42 lat (msec): min=8, max=139, avg=34.19, stdev=21.42 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 49], 90.00th=[ 66], 95.00th=[ 75], | 99.00th=[ 110], 99.50th=[ 123], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 64, max= 608, per=25.80%, avg=286.89, stdev=139.08, samples=44 iops : min= 4, max= 38, avg=17.41, stdev= 8.70, samples=44 lat (msec) : 10=10.42%, 20=33.59%, 50=41.67%, 100=13.15%, 250=1.17% cpu : usr=0.14%, sys=4.31%, ctx=1201, 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=179172: Tue Sep 15 22:15:06 2026 read: IOPS=15, BW=254KiB/s (260kB/s)(5744KiB/22585msec) clat (msec): min=5, max=131, avg=24.09, stdev=20.11 lat (msec): min=5, max=131, avg=24.09, stdev=20.11 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 34], 90.00th=[ 55], 95.00th=[ 69], | 99.00th=[ 90], 99.50th=[ 128], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 32, max= 638, per=23.83%, avg=251.84, stdev=143.56, samples=44 iops : min= 2, max= 39, avg=15.20, stdev= 8.98, samples=44 write: IOPS=18, BW=290KiB/s (297kB/s)(6544KiB/22585msec); 0 zone resets clat (msec): min=7, max=146, avg=33.69, stdev=22.73 lat (msec): min=7, max=146, avg=33.72, stdev=22.74 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 40], 80.00th=[ 50], 90.00th=[ 65], 95.00th=[ 78], | 99.00th=[ 112], 99.50th=[ 117], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 63, max= 704, per=25.40%, avg=282.41, stdev=145.97, samples=44 iops : min= 3, max= 44, avg=17.11, stdev= 9.15, samples=44 lat (msec) : 10=9.90%, 20=36.85%, 50=37.63%, 100=14.06%, 250=1.56% cpu : usr=0.10%, sys=4.31%, ctx=1245, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179173: Tue Sep 15 22:15:06 2026 read: IOPS=17, BW=279KiB/s (286kB/s)(6256KiB/22423msec) clat (msec): min=5, max=107, avg=22.99, stdev=18.70 lat (msec): min=5, max=107, avg=22.99, stdev=18.70 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 33], 90.00th=[ 49], 95.00th=[ 66], | 99.00th=[ 97], 99.50th=[ 108], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 95, max= 761, per=26.52%, avg=280.32, stdev=162.40, samples=44 iops : min= 5, max= 47, avg=17.00, stdev=10.19, samples=44 write: IOPS=16, BW=269KiB/s (275kB/s)(6032KiB/22423msec); 0 zone resets clat (msec): min=9, max=132, avg=35.36, stdev=22.30 lat (msec): min=9, max=132, avg=35.36, stdev=22.30 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 52], 90.00th=[ 68], 95.00th=[ 83], | 99.00th=[ 108], 99.50th=[ 133], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 95, max= 670, per=23.84%, avg=265.14, stdev=133.36, samples=44 iops : min= 5, max= 41, avg=16.05, stdev= 8.34, samples=44 lat (msec) : 10=10.81%, 20=35.29%, 50=38.41%, 100=14.58%, 250=0.91% cpu : usr=0.11%, sys=4.17%, ctx=1265, 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=179174: Tue Sep 15 22:15:06 2026 read: IOPS=16, BW=266KiB/s (273kB/s)(6032KiB/22656msec) clat (msec): min=5, max=165, avg=24.60, stdev=20.46 lat (msec): min=5, max=165, avg=24.60, stdev=20.46 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 55], 95.00th=[ 69], | 99.00th=[ 99], 99.50th=[ 120], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 95, max= 640, per=24.50%, avg=258.95, stdev=135.39, samples=44 iops : min= 5, max= 40, avg=15.64, stdev= 8.54, samples=44 write: IOPS=17, BW=276KiB/s (283kB/s)(6256KiB/22656msec); 0 zone resets clat (msec): min=7, max=137, avg=33.81, stdev=20.74 lat (msec): min=7, max=137, avg=33.82, stdev=20.74 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 61], 95.00th=[ 77], | 99.00th=[ 103], 99.50th=[ 136], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 63, max= 702, per=24.37%, avg=270.95, stdev=143.57, samples=44 iops : min= 3, max= 43, avg=16.41, stdev= 8.99, samples=44 lat (msec) : 10=8.59%, 20=35.68%, 50=40.23%, 100=14.58%, 250=0.91% cpu : usr=0.08%, sys=4.22%, ctx=1226, 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=1057KiB/s (1083kB/s), 254KiB/s-279KiB/s (260kB/s-286kB/s), io=23.4MiB (24.5MB), run=22207-22656msec WRITE: bw=1112KiB/s (1139kB/s), 269KiB/s-290KiB/s (275kB/s-297kB/s), io=24.6MiB (25.8MB), run=22207-22656msec 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=179187: Tue Sep 15 22:15:15 2026 read: IOPS=2, BW=2789KiB/s (2856kB/s)(7168KiB/2570msec) clat (usec): min=1295, max=294480, avg=154576.10, stdev=88140.17 lat (usec): min=1297, max=294481, avg=154577.33, stdev=88139.94 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1303], 10.00th=[ 1303], 20.00th=[125305], | 30.00th=[131597], 40.00th=[131597], 50.00th=[156238], 60.00th=[183501], | 70.00th=[183501], 80.00th=[191890], 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= 2023, max= 4079, per=52.58%, avg=3242.00, stdev=1079.92, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1992KiB/s (2040kB/s)(5120KiB/2570msec); 0 zone resets clat (msec): min=165, max=639, avg=290.33, stdev=201.82 lat (msec): min=165, max=639, avg=290.45, stdev=201.96 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 2023, max= 4000, per=31.13%, avg=2687.33, stdev=1136.83, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=35.89%, ctx=429, 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=179188: Tue Sep 15 22:15:15 2026 read: IOPS=0, BW=617KiB/s (631kB/s)(2048KiB/3321msec) clat (usec): min=633, max=138550, avg=69592.05, stdev=97522.37 lat (usec): min=634, max=138553, avg=69593.60, stdev=97523.60 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[ 635], | 30.00th=[ 635], 40.00th=[ 635], 50.00th=[ 635], 60.00th=[139461], | 70.00th=[139461], 80.00th=[139461], 90.00th=[139461], 95.00th=[139461], | 99.00th=[139461], 99.50th=[139461], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 1851, max= 2000, per=31.23%, avg=1925.50, stdev=105.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3083KiB/s (3157kB/s)(10.0MiB/3321msec); 0 zone resets clat (msec): min=129, max=668, avg=310.95, stdev=191.52 lat (msec): min=129, max=668, avg=311.02, stdev=191.51 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 131], | 30.00th=[ 144], 40.00th=[ 157], 50.00th=[ 275], 60.00th=[ 300], | 70.00th=[ 326], 80.00th=[ 393], 90.00th=[ 584], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1851, max= 4007, per=30.70%, avg=2650.67, stdev=1049.99, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=33.33%, 750=16.67% cpu : usr=0.03%, sys=33.16%, ctx=337, 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=179189: Tue Sep 15 22:15:15 2026 read: IOPS=2, BW=2160KiB/s (2212kB/s)(6144KiB/2844msec) clat (usec): min=579, max=377908, avg=137131.99, stdev=142256.14 lat (usec): min=580, max=377910, avg=137133.12, stdev=142256.30 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 848], | 30.00th=[ 848], 40.00th=[ 89654], 50.00th=[ 89654], 60.00th=[160433], | 70.00th=[193987], 80.00th=[193987], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 1984, max= 6071, per=54.36%, avg=3351.67, stdev=2355.03, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=2, BW=2160KiB/s (2212kB/s)(6144KiB/2844msec); 0 zone resets clat (msec): min=161, max=523, avg=323.03, stdev=160.92 lat (msec): min=161, max=523, avg=323.09, stdev=160.94 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 426], | 70.00th=[ 451], 80.00th=[ 451], 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= 1841, max= 4047, per=28.70%, avg=2477.75, stdev=1049.49, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=30.46%, ctx=222, 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=179190: Tue Sep 15 22:15:15 2026 read: IOPS=1, BW=1659KiB/s (1698kB/s)(5120KiB/3087msec) clat (usec): min=588, max=339482, avg=110379.36, stdev=156801.91 lat (usec): min=589, max=339482, avg=110380.50, stdev=156801.55 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[ 717], 40.00th=[ 717], 50.00th=[ 1303], 60.00th=[ 1303], | 70.00th=[210764], 80.00th=[210764], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 3968, max= 4000, per=64.61%, avg=3984.00, stdev=22.63, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2322KiB/s (2378kB/s)(7168KiB/3087msec); 0 zone resets clat (msec): min=126, max=576, avg=338.18, stdev=172.88 lat (msec): min=126, max=576, avg=338.26, stdev=172.86 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 188], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 334], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 542], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1878, max= 4047, per=30.75%, avg=2654.67, stdev=1208.48, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=31.59%, ctx=241, 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=6167KiB/s (6315kB/s), 617KiB/s-2789KiB/s (631kB/s-2856kB/s), io=20.0MiB (20.0MB), run=2570-3321msec WRITE: bw=8634KiB/s (8841kB/s), 1992KiB/s-3083KiB/s (2040kB/s-3157kB/s), io=28.0MiB (29.4MB), run=2570-3321msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179183: Tue Sep 15 22:15:15 2026 read: IOPS=2, BW=2273KiB/s (2327kB/s)(7168KiB/3154msec) clat (msec): min=100, max=315, avg=196.66, stdev=75.64 lat (msec): min=100, max=315, avg=196.66, stdev=75.64 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 106], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 224], 80.00th=[ 228], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1965, max= 4063, per=51.55%, avg=2921.75, stdev=1073.36, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=1, BW=1623KiB/s (1662kB/s)(5120KiB/3154msec); 0 zone resets clat (msec): min=194, max=546, avg=336.37, stdev=141.10 lat (msec): min=194, max=546, avg=336.44, stdev=141.10 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2031, max= 4047, per=32.05%, avg=2543.50, stdev=1002.37, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 250=66.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=17.76%, ctx=168, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179184: Tue Sep 15 22:15:15 2026 read: IOPS=0, BW=567KiB/s (580kB/s)(2048KiB/3613msec) clat (msec): min=100, max=209, avg=154.88, stdev=76.58 lat (msec): min=100, max=209, avg=154.88, stdev=76.58 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 102], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 209], 90.00th=[ 209], 95.00th=[ 209], | 99.00th=[ 209], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 1858, max= 2023, per=34.24%, avg=1940.50, stdev=116.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2834KiB/s (2902kB/s)(10.0MiB/3613msec); 0 zone resets clat (msec): min=59, max=698, avg=316.79, stdev=231.73 lat (msec): min=59, max=698, avg=316.87, stdev=231.72 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 118], | 30.00th=[ 126], 40.00th=[ 136], 50.00th=[ 167], 60.00th=[ 321], | 70.00th=[ 405], 80.00th=[ 527], 90.00th=[ 617], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1965, max= 8192, per=46.08%, avg=3656.60, stdev=2683.93, samples=5 iops : min= 1, max= 8, avg= 3.00, stdev= 2.92, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=25.00% cpu : usr=0.06%, sys=14.31%, ctx=160, 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=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=179185: Tue Sep 15 22:15:15 2026 read: IOPS=1, BW=1859KiB/s (1904kB/s)(6144KiB/3305msec) clat (msec): min=60, max=965, avg=243.09, stdev=355.32 lat (msec): min=60, max=965, avg=243.09, stdev=355.32 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 83], | 30.00th=[ 83], 40.00th=[ 89], 50.00th=[ 89], 60.00th=[ 117], | 70.00th=[ 144], 80.00th=[ 144], 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= 3930, max= 4047, per=70.37%, avg=3988.50, stdev=82.73, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1859KiB/s (1904kB/s)(6144KiB/3305msec); 0 zone resets clat (msec): min=90, max=701, avg=304.10, stdev=223.03 lat (msec): min=91, max=701, avg=304.21, stdev=223.00 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 279], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1965, max= 3618, per=30.49%, avg=2419.75, stdev=799.79, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=33.33%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=9.56%, ctx=76, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179186: Tue Sep 15 22:15:15 2026 read: IOPS=1, BW=1849KiB/s (1893kB/s)(5120KiB/2769msec) clat (msec): min=81, max=422, avg=239.75, stdev=153.61 lat (msec): min=81, max=422, avg=239.75, stdev=153.61 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 363], 80.00th=[ 363], 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= 4063, max= 4096, per=71.97%, avg=4079.50, stdev=23.33, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2589KiB/s (2651kB/s)(7168KiB/2769msec); 0 zone resets clat (msec): min=63, max=538, avg=218.75, stdev=165.70 lat (msec): min=63, max=538, avg=218.84, stdev=165.74 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 71], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 153], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 292], 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= 2023, max= 3930, per=40.82%, avg=3239.00, stdev=1056.35, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=33.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.07%, sys=14.20%, ctx=216, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5668KiB/s (5804kB/s), 567KiB/s-2273KiB/s (580kB/s-2327kB/s), io=20.0MiB (20.0MB), run=2769-3613msec WRITE: bw=7936KiB/s (8126kB/s), 1623KiB/s-2834KiB/s (1662kB/s-2902kB/s), io=28.0MiB (29.4MB), run=2769-3613msec 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=179196: Tue Sep 15 22:15:22 2026 read: IOPS=1, BW=6872KiB/s (7037kB/s)(12.0MiB/1788msec) clat (msec): min=264, max=888, avg=574.65, stdev=311.68 lat (msec): min=264, max=888, avg=574.66, stdev=311.68 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 5868, max= 8192, per=76.72%, avg=7030.00, stdev=1643.32, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=11.58%, ctx=62, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179197: Tue Sep 15 22:15:22 2026 read: IOPS=0, BW=2429KiB/s (2488kB/s)(4096KiB/1686msec) clat (nsec): min=138102k, max=138102k, avg=138102100.00, stdev= 0.00 lat (nsec): min=138104k, max=138104k, avg=138104230.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 138], 95.00th=[ 138], | 99.00th=[ 138], 99.50th=[ 138], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 5936, max= 5936, per=64.78%, avg=5936.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4859KiB/s (4975kB/s)(8192KiB/1686msec); 0 zone resets clat (msec): min=656, max=834, avg=745.40, stdev=126.41 lat (msec): min=656, max=835, avg=745.76, stdev=126.50 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 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= 8175, max= 8175, per=50.62%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=9.50%, ctx=50, 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=179199: Tue Sep 15 22:15:22 2026 write: IOPS=1, BW=6056KiB/s (6202kB/s)(12.0MiB/2029msec); 0 zone resets clat (msec): min=161, max=999, avg=646.72, stdev=434.53 lat (msec): min=161, max=999, avg=647.09, stdev=434.60 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8175, max= 8175, per=50.62%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=14.10%, ctx=75, 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=179200: Tue Sep 15 22:15:22 2026 write: IOPS=1, BW=7046KiB/s (7215kB/s)(12.0MiB/1744msec); 0 zone resets clat (msec): min=170, max=1142, avg=561.10, stdev=513.67 lat (msec): min=170, max=1143, avg=561.50, stdev=513.68 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min=11976, max=11976, per=74.16%, avg=11976.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.79%, ctx=93, 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=9163KiB/s (9383kB/s), 2429KiB/s-6872KiB/s (2488kB/s-7037kB/s), io=16.0MiB (16.8MB), run=1686-1788msec WRITE: bw=15.8MiB/s (16.5MB/s), 4859KiB/s-7046KiB/s (4975kB/s-7215kB/s), io=32.0MiB (33.6MB), run=1686-2029msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179201: Tue Sep 15 22:15:22 2026 read: IOPS=2, BW=9095KiB/s (9314kB/s)(12.0MiB/1351msec) clat (msec): min=358, max=503, avg=429.11, stdev=72.76 lat (msec): min=358, max=503, avg=429.11, stdev=72.76 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 6301, max= 8192, per=85.81%, avg=7246.50, stdev=1337.14, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=35.04%, ctx=1200, 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=179202: Tue Sep 15 22:15:22 2026 read: IOPS=0, BW=2111KiB/s (2162kB/s)(4096KiB/1940msec) clat (nsec): min=468327k, max=468327k, avg=468326700.00, stdev= 0.00 lat (nsec): min=468329k, max=468329k, avg=468328752.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 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= 6014, max= 6014, per=71.21%, avg=6014.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4223KiB/s (4324kB/s)(8192KiB/1940msec); 0 zone resets clat (msec): min=458, max=982, avg=720.82, stdev=370.51 lat (msec): min=459, max=983, avg=721.22, stdev=370.61 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 986], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8175, max= 8175, per=51.47%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.10%, sys=18.31%, ctx=321, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179203: Tue Sep 15 22:15:22 2026 write: IOPS=1, BW=5956KiB/s (6099kB/s)(12.0MiB/2063msec); 0 zone resets clat (msec): min=67, max=1405, avg=657.81, stdev=682.44 lat (msec): min=68, max=1405, avg=658.12, stdev=682.51 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 68], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8175, max= 8175, per=51.47%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.26%, ctx=44, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179204: Tue Sep 15 22:15:22 2026 write: IOPS=1, BW=6853KiB/s (7018kB/s)(12.0MiB/1793msec); 0 zone resets clat (msec): min=453, max=767, avg=586.72, stdev=162.40 lat (msec): min=453, max=767, avg=587.20, stdev=162.33 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 6440, max= 8192, per=46.06%, avg=7316.00, stdev=1238.85, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.02%, ctx=71, 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=8445KiB/s (8648kB/s), 2111KiB/s-9095KiB/s (2162kB/s-9314kB/s), io=16.0MiB (16.8MB), run=1351-1940msec WRITE: bw=15.5MiB/s (16.3MB/s), 4223KiB/s-6853KiB/s (4324kB/s-7018kB/s), io=32.0MiB (33.6MB), run=1793-2063msec