== sanity test 398b: DIO and buffer IO race ============== 23:04:29 (1786935869) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.7934 s, 18.0 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=160660: Sun Aug 16 23:05:41 2026 read: IOPS=23, BW=95.5KiB/s (97.7kB/s)(5992KiB/62775msec) clat (usec): min=53, max=1353.5k, avg=22482.33, stdev=36409.63 lat (usec): min=53, max=1353.5k, avg=22485.29, stdev=36408.99 clat percentiles (usec): | 1.00th=[ 119], 5.00th=[ 7635], 10.00th=[ 9896], | 20.00th=[ 12518], 30.00th=[ 15008], 40.00th=[ 17433], | 50.00th=[ 20055], 60.00th=[ 22676], 70.00th=[ 25822], | 80.00th=[ 29754], 90.00th=[ 35914], 95.00th=[ 40109], | 99.00th=[ 60031], 99.50th=[ 71828], 99.90th=[ 162530], | 99.95th=[1350566], 99.99th=[1350566] bw ( KiB/s): min= 47, max= 200, per=25.34%, avg=96.81, stdev=30.41, samples=122 iops : min= 11, max= 50, avg=23.75, stdev= 7.68, samples=122 write: IOPS=25, BW=100KiB/s (103kB/s)(6296KiB/62775msec); 0 zone resets clat (usec): min=840, max=118676, avg=18454.86, stdev=13039.16 lat (usec): min=840, max=118676, avg=18455.56, stdev=13039.15 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 3359], 10.00th=[ 4555], 20.00th=[ 6587], | 30.00th=[ 9896], 40.00th=[ 12911], 50.00th=[ 15795], 60.00th=[ 19268], | 70.00th=[ 22938], 80.00th=[ 28443], 90.00th=[ 36963], 95.00th=[ 42730], | 99.00th=[ 56886], 99.50th=[ 64226], 99.90th=[ 87557], 99.95th=[119014], | 99.99th=[119014] bw ( KiB/s): min= 31, max= 200, per=25.45%, avg=101.80, stdev=34.55, samples=122 iops : min= 7, max= 50, avg=24.99, stdev= 8.67, samples=122 lat (usec) : 100=0.26%, 250=1.37%, 500=0.10%, 1000=0.26% lat (msec) : 2=0.52%, 4=3.61%, 10=14.71%, 20=35.51%, 50=41.34% lat (msec) : 100=2.18%, 250=0.10%, 2000=0.03% cpu : usr=0.09%, sys=29.48%, ctx=10519, 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=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=160661: Sun Aug 16 23:05:41 2026 read: IOPS=23, BW=94.9KiB/s (97.1kB/s)(5940KiB/62612msec) clat (usec): min=40, max=1307.3k, avg=22365.00, stdev=35356.61 lat (usec): min=41, max=1307.3k, avg=22368.83, stdev=35356.37 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 6849], 10.00th=[ 9634], | 20.00th=[ 12518], 30.00th=[ 14877], 40.00th=[ 17433], | 50.00th=[ 20055], 60.00th=[ 22676], 70.00th=[ 25822], | 80.00th=[ 30016], 90.00th=[ 35390], 95.00th=[ 40633], | 99.00th=[ 58983], 99.50th=[ 65799], 99.90th=[ 137364], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 16, max= 167, per=25.24%, avg=96.41, stdev=28.03, samples=122 iops : min= 4, max= 41, avg=23.65, stdev= 7.07, samples=122 write: IOPS=25, BW=101KiB/s (104kB/s)(6348KiB/62612msec); 0 zone resets clat (usec): min=756, max=99917, avg=18488.72, stdev=12884.90 lat (usec): min=757, max=99917, avg=18489.38, stdev=12884.91 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 3392], 10.00th=[ 4490], 20.00th=[ 6718], | 30.00th=[ 9896], 40.00th=[ 13042], 50.00th=[ 16188], 60.00th=[ 19268], | 70.00th=[ 23200], 80.00th=[ 28443], 90.00th=[ 35390], 95.00th=[ 43254], | 99.00th=[ 59507], 99.50th=[ 66323], 99.90th=[ 89654], 99.95th=[100140], | 99.99th=[100140] bw ( KiB/s): min= 40, max= 207, per=25.69%, avg=102.75, stdev=33.39, samples=122 iops : min= 10, max= 51, avg=25.24, stdev= 8.33, samples=122 lat (usec) : 50=0.03%, 100=0.20%, 250=1.56%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.26% lat (msec) : 2=0.29%, 4=3.58%, 10=15.36%, 20=35.35%, 50=41.37% lat (msec) : 100=1.82%, 250=0.07%, 2000=0.03% cpu : usr=0.08%, sys=29.40%, ctx=10472, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160662: Sun Aug 16 23:05:41 2026 read: IOPS=24, BW=97.7KiB/s (100kB/s)(6028KiB/61680msec) clat (usec): min=36, max=116055, avg=21565.98, stdev=11898.46 lat (usec): min=36, max=116056, avg=21566.60, stdev=11898.48 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 7308], 10.00th=[ 9503], 20.00th=[ 12649], | 30.00th=[ 15139], 40.00th=[ 17433], 50.00th=[ 20055], 60.00th=[ 22414], | 70.00th=[ 25297], 80.00th=[ 29230], 90.00th=[ 35390], 95.00th=[ 42206], | 99.00th=[ 59507], 99.50th=[ 73925], 99.90th=[107480], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 39, max= 199, per=26.03%, avg=99.43, stdev=30.81, samples=120 iops : min= 9, max= 49, avg=24.41, stdev= 7.71, samples=120 write: IOPS=25, BW=101KiB/s (104kB/s)(6260KiB/61680msec); 0 zone resets clat (usec): min=752, max=1327.4k, avg=18617.04, stdev=35509.58 lat (usec): min=752, max=1327.4k, avg=18617.82, stdev=35509.59 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 3261], 10.00th=[ 4228], | 20.00th=[ 6194], 30.00th=[ 8979], 40.00th=[ 11994], | 50.00th=[ 15270], 60.00th=[ 18744], 70.00th=[ 22676], | 80.00th=[ 26870], 90.00th=[ 35390], 95.00th=[ 41681], | 99.00th=[ 57410], 99.50th=[ 63177], 99.90th=[ 126354], | 99.95th=[1333789], 99.99th=[1333789] bw ( KiB/s): min= 23, max= 208, per=25.82%, avg=103.28, stdev=34.67, samples=120 iops : min= 5, max= 52, avg=25.38, stdev= 8.76, samples=120 lat (usec) : 50=0.07%, 100=0.33%, 250=1.33%, 500=0.07%, 1000=0.39% lat (msec) : 2=0.49%, 4=3.78%, 10=16.15%, 20=34.44%, 50=40.69% lat (msec) : 100=2.15%, 250=0.10%, 2000=0.03% cpu : usr=0.09%, sys=29.62%, ctx=10317, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160663: Sun Aug 16 23:05:41 2026 read: IOPS=24, BW=96.4KiB/s (98.7kB/s)(6052KiB/62788msec) clat (usec): min=31, max=140710, avg=21698.74, stdev=12503.61 lat (usec): min=31, max=140712, avg=21699.31, stdev=12503.63 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 5735], 10.00th=[ 9241], 20.00th=[ 12387], | 30.00th=[ 15139], 40.00th=[ 17433], 50.00th=[ 19792], 60.00th=[ 22676], | 70.00th=[ 25560], 80.00th=[ 30016], 90.00th=[ 36439], 95.00th=[ 43254], | 99.00th=[ 60556], 99.50th=[ 73925], 99.90th=[106431], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 39, max= 192, per=25.63%, avg=97.91, stdev=31.28, samples=122 iops : min= 9, max= 48, avg=24.02, stdev= 7.85, samples=122 write: IOPS=24, BW=99.3KiB/s (102kB/s)(6236KiB/62788msec); 0 zone resets clat (usec): min=802, max=1321.2k, avg=19180.88, stdev=35398.12 lat (usec): min=803, max=1321.2k, avg=19181.60, stdev=35398.12 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 3294], 10.00th=[ 3949], | 20.00th=[ 6652], 30.00th=[ 9503], 40.00th=[ 13042], | 50.00th=[ 16057], 60.00th=[ 19530], 70.00th=[ 23462], | 80.00th=[ 28181], 90.00th=[ 34866], 95.00th=[ 43254], | 99.00th=[ 59507], 99.50th=[ 66847], 99.90th=[ 105382], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 47, max= 184, per=25.22%, avg=100.86, stdev=33.62, samples=122 iops : min= 11, max= 46, avg=24.76, stdev= 8.48, samples=122 lat (usec) : 50=0.10%, 100=0.39%, 250=1.37%, 500=0.26%, 750=0.03% lat (usec) : 1000=0.46% lat (msec) : 2=0.42%, 4=4.39%, 10=14.29%, 20=34.24%, 50=41.57% lat (msec) : 100=2.34%, 250=0.10%, 2000=0.03% cpu : usr=0.09%, sys=29.10%, ctx=10593, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=382KiB/s (392kB/s), 94.9KiB/s-97.7KiB/s (97.1kB/s-100kB/s), io=23.4MiB (24.6MB), run=61680-62788msec WRITE: bw=400KiB/s (410kB/s), 99.3KiB/s-101KiB/s (102kB/s-104kB/s), io=24.6MiB (25.7MB), run=61680-62788msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160655: Sun Aug 16 23:06:04 2026 read: IOPS=17, BW=69.6KiB/s (71.3kB/s)(5992KiB/86056msec) clat (msec): min=2, max=1452, avg=18.85, stdev=40.41 lat (msec): min=2, max=1452, avg=18.85, stdev=40.41 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 40], 95.00th=[ 52], | 99.00th=[ 81], 99.50th=[ 95], 99.90th=[ 138], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 15, max= 176, per=25.30%, avg=70.60, stdev=36.88, samples=168 iops : min= 3, max= 44, avg=17.28, stdev= 9.37, samples=168 write: IOPS=18, BW=73.2KiB/s (74.9kB/s)(6296KiB/86056msec); 0 zone resets clat (msec): min=14, max=165, avg=36.56, stdev=17.21 lat (msec): min=14, max=165, avg=36.57, stdev=17.21 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 47], 90.00th=[ 59], 95.00th=[ 69], | 99.00th=[ 100], 99.50th=[ 115], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 15, max= 152, per=25.37%, avg=74.08, stdev=32.23, samples=168 iops : min= 3, max= 38, avg=18.15, stdev= 8.25, samples=168 lat (msec) : 4=2.64%, 10=17.22%, 20=17.02%, 50=51.82%, 100=10.68% lat (msec) : 250=0.59%, 2000=0.03% cpu : usr=0.05%, sys=12.14%, ctx=6945, 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=160656: Sun Aug 16 23:06:04 2026 read: IOPS=17, BW=69.4KiB/s (71.1kB/s)(5940KiB/85556msec) clat (msec): min=2, max=1409, avg=18.86, stdev=39.44 lat (msec): min=2, max=1409, avg=18.86, stdev=39.44 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 39], 95.00th=[ 51], | 99.00th=[ 83], 99.50th=[ 95], 99.90th=[ 108], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 224, per=25.27%, avg=70.49, stdev=39.83, samples=167 iops : min= 1, max= 56, avg=17.25, stdev=10.10, samples=167 write: IOPS=18, BW=74.2KiB/s (75.0kB/s)(6348KiB/85556msec); 0 zone resets clat (msec): min=15, max=170, avg=36.09, stdev=16.01 lat (msec): min=15, max=170, avg=36.09, stdev=16.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 47], 90.00th=[ 58], 95.00th=[ 67], | 99.00th=[ 92], 99.50th=[ 103], 99.90th=[ 127], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 31, max= 152, per=25.78%, avg=75.29, stdev=31.72, samples=167 iops : min= 7, max= 38, avg=18.45, stdev= 8.13, samples=167 lat (msec) : 4=2.64%, 10=17.06%, 20=16.11%, 50=53.13%, 100=10.68% lat (msec) : 250=0.36%, 2000=0.03% cpu : usr=0.09%, sys=12.14%, ctx=6769, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160657: Sun Aug 16 23:06:04 2026 read: IOPS=17, BW=70.1KiB/s (71.8kB/s)(6028KiB/85996msec) clat (msec): min=2, max=130, avg=18.40, stdev=15.66 lat (msec): min=2, max=130, avg=18.40, stdev=15.66 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 50], | 99.00th=[ 74], 99.50th=[ 86], 99.90th=[ 124], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 15, max= 232, per=25.51%, avg=71.17, stdev=37.43, samples=168 iops : min= 3, max= 58, avg=17.42, stdev= 9.51, samples=168 write: IOPS=18, BW=72.8KiB/s (74.5kB/s)(6260KiB/85996msec); 0 zone resets clat (msec): min=13, max=1426, avg=37.06, stdev=39.05 lat (msec): min=13, max=1426, avg=37.06, stdev=39.05 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 31], 60.00th=[ 35], | 70.00th=[ 40], 80.00th=[ 47], 90.00th=[ 58], 95.00th=[ 68], | 99.00th=[ 100], 99.50th=[ 111], 99.90th=[ 167], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 23, max= 144, per=25.27%, avg=73.79, stdev=33.36, samples=168 iops : min= 5, max= 36, avg=18.08, stdev= 8.53, samples=168 lat (msec) : 4=2.77%, 10=15.79%, 20=16.37%, 50=54.30%, 100=10.22% lat (msec) : 250=0.52%, 2000=0.03% cpu : usr=0.06%, sys=12.23%, ctx=6937, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160658: Sun Aug 16 23:06:04 2026 read: IOPS=17, BW=70.7KiB/s (72.4kB/s)(6052KiB/85613msec) clat (msec): min=2, max=139, avg=18.55, stdev=16.40 lat (msec): min=2, max=139, avg=18.55, stdev=16.40 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 41], 95.00th=[ 53], | 99.00th=[ 78], 99.50th=[ 93], 99.90th=[ 110], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 15, max= 216, per=25.71%, avg=71.74, stdev=36.80, samples=167 iops : min= 3, max= 54, avg=17.56, stdev= 9.37, samples=167 write: IOPS=18, BW=72.8KiB/s (74.6kB/s)(6236KiB/85613msec); 0 zone resets clat (msec): min=15, max=1421, avg=36.74, stdev=38.57 lat (msec): min=15, max=1421, avg=36.74, stdev=38.57 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 35], | 70.00th=[ 39], 80.00th=[ 46], 90.00th=[ 57], 95.00th=[ 67], | 99.00th=[ 96], 99.50th=[ 108], 99.90th=[ 159], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 15, max= 144, per=25.29%, avg=73.85, stdev=31.85, samples=167 iops : min= 3, max= 36, avg=18.09, stdev= 8.14, samples=167 lat (msec) : 4=2.83%, 10=16.15%, 20=16.70%, 50=53.39%, 100=10.35% lat (msec) : 250=0.55%, 2000=0.03% cpu : usr=0.07%, sys=12.30%, ctx=6796, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=279KiB/s (286kB/s), 69.4KiB/s-70.7KiB/s (71.1kB/s-72.4kB/s), io=23.4MiB (24.6MB), run=85556-86056msec WRITE: bw=292KiB/s (299kB/s), 72.8KiB/s-74.2KiB/s (74.5kB/s-75.0kB/s), io=24.6MiB (25.7MB), run=85556-86056msec 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=160691: Sun Aug 16 23:06:28 2026 read: IOPS=22, BW=368KiB/s (376kB/s)(5920KiB/16106msec) clat (usec): min=69, max=96035, avg=21268.27, stdev=14136.72 lat (usec): min=69, max=96036, avg=21268.95, stdev=14136.79 clat percentiles (usec): | 1.00th=[ 102], 5.00th=[ 127], 10.00th=[ 233], 20.00th=[11469], | 30.00th=[14484], 40.00th=[16188], 50.00th=[18744], 60.00th=[21890], | 70.00th=[25297], 80.00th=[30278], 90.00th=[40109], 95.00th=[49021], | 99.00th=[58983], 99.50th=[85459], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 160, max= 606, per=24.58%, avg=359.55, stdev=124.23, samples=31 iops : min= 10, max= 37, avg=21.97, stdev= 7.68, samples=31 write: IOPS=24, BW=395KiB/s (405kB/s)(6368KiB/16106msec); 0 zone resets clat (usec): min=1055, max=99475, avg=20491.24, stdev=15390.29 lat (usec): min=1055, max=99476, avg=20492.37, stdev=15390.37 clat percentiles (usec): | 1.00th=[ 2089], 5.00th=[ 4424], 10.00th=[ 5145], 20.00th=[ 6456], | 30.00th=[10159], 40.00th=[13435], 50.00th=[16188], 60.00th=[20579], | 70.00th=[25560], 80.00th=[31589], 90.00th=[41157], 95.00th=[52167], | 99.00th=[70779], 99.50th=[78119], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 95, max= 701, per=25.47%, avg=392.19, stdev=169.57, samples=31 iops : min= 5, max= 43, avg=24.03, stdev=10.66, samples=31 lat (usec) : 100=0.39%, 250=4.43%, 500=0.39% lat (msec) : 2=0.52%, 4=1.43%, 10=15.36%, 20=33.46%, 50=38.67% lat (msec) : 100=5.34% cpu : usr=0.07%, sys=31.20%, ctx=2826, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160692: Sun Aug 16 23:06:28 2026 read: IOPS=21, BW=351KiB/s (359kB/s)(5744KiB/16363msec) clat (usec): min=38, max=111830, avg=22268.77, stdev=15619.35 lat (usec): min=39, max=111830, avg=22269.43, stdev=15619.45 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 128], 10.00th=[ 5080], 20.00th=[ 11207], | 30.00th=[ 13960], 40.00th=[ 16581], 50.00th=[ 19792], 60.00th=[ 22414], | 70.00th=[ 26346], 80.00th=[ 32637], 90.00th=[ 40633], 95.00th=[ 50594], | 99.00th=[ 71828], 99.50th=[ 99091], 99.90th=[111674], 99.95th=[111674], | 99.99th=[111674] bw ( KiB/s): min= 128, max= 637, per=23.53%, avg=344.19, stdev=140.75, samples=32 iops : min= 8, max= 39, avg=21.03, stdev= 8.73, samples=32 write: IOPS=24, BW=400KiB/s (410kB/s)(6544KiB/16363msec); 0 zone resets clat (usec): min=1066, max=96676, avg=20283.51, stdev=15378.42 lat (usec): min=1066, max=96677, avg=20284.71, stdev=15378.55 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 4015], 10.00th=[ 5014], 20.00th=[ 6980], | 30.00th=[ 9896], 40.00th=[12780], 50.00th=[16188], 60.00th=[20055], | 70.00th=[25035], 80.00th=[31851], 90.00th=[41681], 95.00th=[49546], | 99.00th=[66847], 99.50th=[70779], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 159, max= 828, per=25.12%, avg=386.84, stdev=147.06, samples=32 iops : min= 9, max= 51, avg=23.69, stdev= 9.21, samples=32 lat (usec) : 50=0.13%, 100=1.04%, 250=3.12%, 500=0.13% lat (msec) : 2=0.65%, 4=1.95%, 10=16.15%, 20=32.68%, 50=38.93% lat (msec) : 100=5.08%, 250=0.13% cpu : usr=0.09%, sys=30.42%, ctx=2877, 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=160693: Sun Aug 16 23:06:28 2026 read: IOPS=24, BW=387KiB/s (396kB/s)(6256KiB/16157msec) clat (usec): min=35, max=81678, avg=21801.67, stdev=13809.83 lat (usec): min=35, max=81678, avg=21802.34, stdev=13809.91 clat percentiles (usec): | 1.00th=[ 74], 5.00th=[ 121], 10.00th=[ 194], 20.00th=[11994], | 30.00th=[14353], 40.00th=[17171], 50.00th=[20055], 60.00th=[22676], | 70.00th=[27132], 80.00th=[32900], 90.00th=[39060], 95.00th=[44827], | 99.00th=[65274], 99.50th=[77071], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 159, max= 860, per=26.52%, avg=388.00, stdev=163.01, samples=32 iops : min= 9, max= 53, avg=23.78, stdev=10.22, samples=32 write: IOPS=23, BW=373KiB/s (382kB/s)(6032KiB/16157msec); 0 zone resets clat (usec): min=1070, max=90301, avg=19965.61, stdev=15197.55 lat (usec): min=1071, max=90303, avg=19971.94, stdev=15207.79 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 3851], 10.00th=[ 4883], 20.00th=[ 6980], | 30.00th=[10290], 40.00th=[12387], 50.00th=[15008], 60.00th=[19792], | 70.00th=[25035], 80.00th=[30802], 90.00th=[40109], 95.00th=[48497], | 99.00th=[74974], 99.50th=[85459], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 160, max= 669, per=24.00%, avg=369.66, stdev=147.59, samples=32 iops : min= 10, max= 41, avg=22.62, stdev= 9.22, samples=32 lat (usec) : 50=0.26%, 100=1.04%, 250=4.04%, 500=0.39% lat (msec) : 2=0.91%, 4=1.56%, 10=12.50%, 20=33.98%, 50=41.67% lat (msec) : 100=3.65% cpu : usr=0.04%, sys=30.28%, ctx=2922, 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=160694: Sun Aug 16 23:06:28 2026 read: IOPS=23, BW=381KiB/s (391kB/s)(6032KiB/15817msec) clat (usec): min=54, max=77612, avg=22128.34, stdev=14366.67 lat (usec): min=55, max=77613, avg=22129.02, stdev=14366.69 clat percentiles (usec): | 1.00th=[ 73], 5.00th=[ 117], 10.00th=[ 219], 20.00th=[11731], | 30.00th=[14484], 40.00th=[16909], 50.00th=[20317], 60.00th=[23462], | 70.00th=[28181], 80.00th=[32113], 90.00th=[41681], 95.00th=[47449], | 99.00th=[69731], 99.50th=[71828], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 159, max= 733, per=25.82%, avg=377.77, stdev=146.71, samples=31 iops : min= 9, max= 45, avg=23.13, stdev= 9.18, samples=31 write: IOPS=24, BW=396KiB/s (405kB/s)(6256KiB/15817msec); 0 zone resets clat (usec): min=1039, max=79668, avg=19035.93, stdev=14960.13 lat (usec): min=1040, max=79669, avg=19037.30, stdev=14960.07 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 4047], 10.00th=[ 4752], 20.00th=[ 5932], | 30.00th=[ 7504], 40.00th=[10945], 50.00th=[15139], 60.00th=[19792], | 70.00th=[23725], 80.00th=[31065], 90.00th=[39060], 95.00th=[46400], | 99.00th=[72877], 99.50th=[79168], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 190, max= 701, per=25.57%, avg=393.77, stdev=162.39, samples=31 iops : min= 11, max= 43, avg=24.13, stdev=10.07, samples=31 lat (usec) : 100=1.43%, 250=3.65%, 500=0.65% lat (msec) : 2=0.52%, 4=1.82%, 10=18.10%, 20=28.91%, 50=40.89% lat (msec) : 100=4.04% cpu : usr=0.09%, sys=30.80%, ctx=2762, 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=1464KiB/s (1499kB/s), 351KiB/s-387KiB/s (359kB/s-396kB/s), io=23.4MiB (24.5MB), run=15817-16363msec WRITE: bw=1540KiB/s (1577kB/s), 373KiB/s-400KiB/s (382kB/s-410kB/s), io=24.6MiB (25.8MB), run=15817-16363msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160695: Sun Aug 16 23:06:34 2026 read: IOPS=16, BW=262KiB/s (268kB/s)(5920KiB/22634msec) clat (msec): min=3, max=130, avg=19.19, stdev=17.94 lat (msec): min=3, max=130, avg=19.19, stdev=17.94 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 17], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 58], | 99.00th=[ 85], 99.50th=[ 93], 99.90th=[ 131], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 63, max= 672, per=23.98%, avg=252.02, stdev=135.39, samples=44 iops : min= 3, max= 42, avg=15.30, stdev= 8.72, samples=44 write: IOPS=17, BW=281KiB/s (288kB/s)(6368KiB/22634msec); 0 zone resets clat (msec): min=13, max=131, avg=38.76, stdev=20.39 lat (msec): min=13, max=131, avg=38.76, stdev=20.39 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 68], 95.00th=[ 89], | 99.00th=[ 108], 99.50th=[ 115], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 126, max= 576, per=24.92%, avg=275.57, stdev=134.40, samples=44 iops : min= 7, max= 36, avg=16.77, stdev= 8.65, samples=44 lat (msec) : 4=1.95%, 10=16.02%, 20=18.36%, 50=49.09%, 100=13.54% lat (msec) : 250=1.04% cpu : usr=0.05%, sys=11.86%, ctx=1861, 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=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=160696: Sun Aug 16 23:06:34 2026 read: IOPS=15, BW=252KiB/s (258kB/s)(5744KiB/22774msec) clat (msec): min=3, max=155, avg=20.62, stdev=21.67 lat (msec): min=3, max=155, avg=20.62, stdev=21.67 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 23], 80.00th=[ 33], 90.00th=[ 47], 95.00th=[ 66], | 99.00th=[ 100], 99.50th=[ 150], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 63, max= 704, per=23.85%, avg=250.64, stdev=149.55, samples=45 iops : min= 3, max= 44, avg=15.22, stdev= 9.61, samples=45 write: IOPS=17, BW=287KiB/s (294kB/s)(6544KiB/22774msec); 0 zone resets clat (msec): min=11, max=132, avg=37.24, stdev=19.06 lat (msec): min=11, max=132, avg=37.24, stdev=19.06 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 49], 90.00th=[ 62], 95.00th=[ 79], | 99.00th=[ 108], 99.50th=[ 112], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 95, max= 672, per=25.74%, avg=284.64, stdev=145.53, samples=45 iops : min= 5, max= 42, avg=17.36, stdev= 9.34, samples=45 lat (msec) : 4=2.73%, 10=16.41%, 20=17.45%, 50=49.61%, 100=12.63% lat (msec) : 250=1.17% cpu : usr=0.07%, sys=11.56%, ctx=1795, 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=160697: Sun Aug 16 23:06:34 2026 read: IOPS=17, BW=279KiB/s (285kB/s)(6256KiB/22451msec) clat (msec): min=3, max=123, avg=19.17, stdev=18.80 lat (msec): min=3, max=123, avg=19.17, stdev=18.80 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 41], 95.00th=[ 61], | 99.00th=[ 91], 99.50th=[ 109], 99.90th=[ 124], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 63, max= 736, per=26.50%, avg=278.50, stdev=172.52, samples=44 iops : min= 3, max= 46, avg=16.95, stdev=11.08, samples=44 write: IOPS=16, BW=269KiB/s (275kB/s)(6032KiB/22451msec); 0 zone resets clat (msec): min=16, max=137, avg=39.59, stdev=20.38 lat (msec): min=16, max=137, avg=39.59, stdev=20.38 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 22], 20.00th=[ 25], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 44], 80.00th=[ 54], 90.00th=[ 67], 95.00th=[ 78], | 99.00th=[ 115], 99.50th=[ 127], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 95, max= 576, per=23.99%, avg=265.30, stdev=124.75, samples=44 iops : min= 5, max= 36, avg=16.14, stdev= 8.04, samples=44 lat (msec) : 4=1.04%, 10=19.27%, 20=17.32%, 50=47.01%, 100=13.54% lat (msec) : 250=1.82% cpu : usr=0.10%, sys=11.76%, ctx=1846, 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=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=160698: Sun Aug 16 23:06:34 2026 read: IOPS=16, BW=268KiB/s (274kB/s)(6032KiB/22541msec) clat (msec): min=3, max=112, avg=20.43, stdev=18.69 lat (msec): min=3, max=112, avg=20.43, stdev=18.69 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 48], 95.00th=[ 62], | 99.00th=[ 79], 99.50th=[ 89], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 95, max= 736, per=24.84%, avg=261.02, stdev=140.37, samples=44 iops : min= 5, max= 46, avg=15.86, stdev= 9.01, samples=44 write: IOPS=17, BW=278KiB/s (284kB/s)(6256KiB/22541msec); 0 zone resets clat (msec): min=13, max=132, avg=37.63, stdev=18.37 lat (msec): min=13, max=132, avg=37.63, stdev=18.37 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 35], | 70.00th=[ 40], 80.00th=[ 49], 90.00th=[ 64], 95.00th=[ 75], | 99.00th=[ 105], 99.50th=[ 120], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 94, max= 512, per=24.79%, avg=274.16, stdev=138.49, samples=44 iops : min= 5, max= 32, avg=16.68, stdev= 8.93, samples=44 lat (msec) : 4=1.95%, 10=17.19%, 20=15.63%, 50=51.43%, 100=13.15% lat (msec) : 250=0.65% cpu : usr=0.08%, sys=11.67%, ctx=1765, 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=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=1052KiB/s (1077kB/s), 252KiB/s-279KiB/s (258kB/s-285kB/s), io=23.4MiB (24.5MB), run=22451-22774msec WRITE: bw=1107KiB/s (1133kB/s), 269KiB/s-287KiB/s (275kB/s-294kB/s), io=24.6MiB (25.8MB), run=22451-22774msec 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=160706: Sun Aug 16 23:06:44 2026 read: IOPS=2, BW=2244KiB/s (2298kB/s)(7168KiB/3194msec) clat (msec): min=60, max=428, avg=174.93, stdev=136.87 lat (msec): min=60, max=428, avg=174.93, stdev=136.87 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 65], | 30.00th=[ 69], 40.00th=[ 69], 50.00th=[ 124], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 253], 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= 1943, max= 5120, per=54.00%, avg=2779.25, stdev=1561.01, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1603KiB/s (1641kB/s)(5120KiB/3194msec); 0 zone resets clat (msec): min=178, max=673, avg=389.09, stdev=227.89 lat (msec): min=178, max=673, avg=389.18, stdev=227.90 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 251], 60.00th=[ 251], | 70.00th=[ 600], 80.00th=[ 600], 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= 1706, max= 4096, per=33.96%, avg=2447.00, stdev=1108.38, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.06%, sys=15.03%, ctx=117, 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=160707: Sun Aug 16 23:06:44 2026 read: IOPS=0, BW=594KiB/s (608kB/s)(2048KiB/3447msec) clat (msec): min=50, max=146, avg=98.54, stdev=67.93 lat (msec): min=50, max=146, avg=98.54, stdev=67.93 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 51], 40.00th=[ 51], 50.00th=[ 51], 60.00th=[ 146], | 70.00th=[ 146], 80.00th=[ 146], 90.00th=[ 146], 95.00th=[ 146], | 99.00th=[ 146], 99.50th=[ 146], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 1712, max= 2048, per=36.53%, avg=1880.00, stdev=237.59, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2971KiB/s (3042kB/s)(10.0MiB/3447msec); 0 zone resets clat (msec): min=87, max=998, avg=324.11, stdev=289.84 lat (msec): min=87, max=998, avg=324.18, stdev=289.83 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 103], | 30.00th=[ 131], 40.00th=[ 150], 50.00th=[ 163], 60.00th=[ 257], | 70.00th=[ 271], 80.00th=[ 527], 90.00th=[ 558], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1943, max= 5137, per=36.62%, avg=2638.80, stdev=1397.17, samples=5 iops : min= 1, max= 5, avg= 2.00, stdev= 1.73, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=16.92%, ctx=206, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160708: Sun Aug 16 23:06:44 2026 read: IOPS=1, BW=1544KiB/s (1581kB/s)(6144KiB/3979msec) clat (msec): min=97, max=480, avg=293.30, stdev=138.48 lat (msec): min=97, max=480, avg=293.30, stdev=138.48 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 351], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2023, max= 4087, per=49.49%, avg=2547.25, stdev=1026.55, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1544KiB/s (1581kB/s)(6144KiB/3979msec); 0 zone resets clat (msec): min=76, max=720, avg=363.98, stdev=241.26 lat (msec): min=76, max=720, avg=364.06, stdev=241.27 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 443], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1943, max= 3430, per=32.71%, avg=2356.75, stdev=716.60, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=12.85%, ctx=177, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160709: Sun Aug 16 23:06:44 2026 read: IOPS=1, BW=1592KiB/s (1630kB/s)(5120KiB/3216msec) clat (msec): min=76, max=507, avg=241.10, stdev=161.27 lat (msec): min=76, max=507, avg=241.10, stdev=161.27 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 232], 80.00th=[ 232], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 4063, max= 4096, per=79.26%, 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=2229KiB/s (2282kB/s)(7168KiB/3216msec); 0 zone resets clat (msec): min=93, max=727, avg=283.52, stdev=210.04 lat (msec): min=93, max=728, avg=283.60, stdev=210.05 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 157], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 215], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 342], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1943, max= 4047, per=39.82%, avg=2868.75, stdev=1041.76, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=16.67%, 250=58.33%, 500=8.33%, 750=16.67% cpu : usr=0.03%, sys=13.47%, ctx=302, 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=5147KiB/s (5271kB/s), 594KiB/s-2244KiB/s (608kB/s-2298kB/s), io=20.0MiB (20.0MB), run=3194-3979msec WRITE: bw=7206KiB/s (7379kB/s), 1544KiB/s-2971KiB/s (1581kB/s-3042kB/s), io=28.0MiB (29.4MB), run=3194-3979msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160711: Sun Aug 16 23:06:44 2026 read: IOPS=1, BW=2019KiB/s (2067kB/s)(7168KiB/3551msec) clat (msec): min=140, max=451, avg=259.10, stdev=99.69 lat (msec): min=140, max=451, avg=259.10, stdev=99.69 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 192], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 232], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 305], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1771, max= 3792, per=46.32%, avg=2341.40, stdev=819.73, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 0.71, samples=5 write: IOPS=1, BW=1442KiB/s (1476kB/s)(5120KiB/3551msec); 0 zone resets clat (msec): min=167, max=562, avg=331.42, stdev=150.76 lat (msec): min=167, max=563, avg=331.60, stdev=150.81 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1875, max= 4096, per=37.77%, avg=2673.00, stdev=1235.39, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 250=41.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=48.87%, ctx=678, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160712: Sun Aug 16 23:06:44 2026 read: IOPS=0, BW=510KiB/s (523kB/s)(2048KiB/4013msec) clat (msec): min=2, max=159, avg=80.94, stdev=111.44 lat (msec): min=2, max=159, avg=80.94, stdev=111.45 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 3], 40.00th=[ 3], 50.00th=[ 3], 60.00th=[ 161], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 161], 95.00th=[ 161], | 99.00th=[ 161], 99.50th=[ 161], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 1753, max= 2048, per=37.60%, avg=1900.50, stdev=208.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2552KiB/s (2613kB/s)(10.0MiB/4013msec); 0 zone resets clat (msec): min=139, max=1248, avg=383.17, stdev=317.87 lat (msec): min=139, max=1248, avg=383.23, stdev=317.86 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 159], | 30.00th=[ 205], 40.00th=[ 296], 50.00th=[ 317], 60.00th=[ 330], | 70.00th=[ 342], 80.00th=[ 376], 90.00th=[ 422], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1753, max= 4096, per=44.92%, avg=3179.20, stdev=1237.81, samples=5 iops : min= 1, max= 4, avg= 2.60, stdev= 1.52, samples=5 lat (msec) : 4=8.33%, 250=33.33%, 500=50.00%, 2000=8.33% cpu : usr=0.05%, sys=41.28%, ctx=504, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160713: Sun Aug 16 23:06:44 2026 read: IOPS=1, BW=1517KiB/s (1553kB/s)(6144KiB/4051msec) clat (usec): min=458, max=432079, avg=144966.17, stdev=160757.62 lat (usec): min=459, max=432079, avg=144967.01, stdev=160757.39 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[101188], 50.00th=[101188], 60.00th=[135267], | 70.00th=[200279], 80.00th=[200279], 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= 1875, max= 4055, per=52.61%, avg=2659.33, stdev=1211.77, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1517KiB/s (1553kB/s)(6144KiB/4051msec); 0 zone resets clat (msec): min=110, max=1646, avg=522.47, stdev=576.22 lat (msec): min=110, max=1646, avg=522.52, stdev=576.23 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 439], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1783, max= 2027, per=26.78%, avg=1895.25, stdev=100.61, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=50.00%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=31.65%, ctx=684, 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=160714: Sun Aug 16 23:06:44 2026 read: IOPS=1, BW=1333KiB/s (1365kB/s)(5120KiB/3841msec) clat (usec): min=426, max=374545, avg=159731.15, stdev=137100.21 lat (usec): min=427, max=374546, avg=159732.02, stdev=137100.33 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 429], | 30.00th=[102237], 40.00th=[102237], 50.00th=[147850], 60.00th=[147850], | 70.00th=[173016], 80.00th=[173016], 90.00th=[375391], 95.00th=[375391], | 99.00th=[375391], 99.50th=[375391], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1866KiB/s (1911kB/s)(7168KiB/3841msec); 0 zone resets clat (msec): min=46, max=820, avg=424.76, stdev=262.04 lat (msec): min=46, max=821, avg=424.83, stdev=262.05 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 138], | 30.00th=[ 435], 40.00th=[ 435], 50.00th=[ 477], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 575], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1771, max= 4055, per=33.34%, avg=2359.40, stdev=955.23, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (usec) : 500=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=35.16%, ctx=645, 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=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=5056KiB/s (5177kB/s), 510KiB/s-2019KiB/s (523kB/s-2067kB/s), io=20.0MiB (20.0MB), run=3551-4051msec WRITE: bw=7078KiB/s (7248kB/s), 1442KiB/s-2552KiB/s (1476kB/s-2613kB/s), io=28.0MiB (29.4MB), run=3551-4051msec 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=160720: Sun Aug 16 23:06:52 2026 read: IOPS=1, BW=8165KiB/s (8361kB/s)(12.0MiB/1505msec) clat (msec): min=449, max=471, avg=463.10, stdev=11.78 lat (msec): min=449, max=471, avg=463.10, stdev=11.78 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 8192, max= 8192, per=94.11%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=51.40%, ctx=2523, 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=160721: Sun Aug 16 23:06:52 2026 read: IOPS=0, BW=2176KiB/s (2229kB/s)(4096KiB/1882msec) clat (nsec): min=472665k, max=472665k, avg=472665293.00, stdev= 0.00 lat (nsec): min=472668k, max=472668k, avg=472667928.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 8192, max= 8192, per=94.11%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4353KiB/s (4457kB/s)(8192KiB/1882msec); 0 zone resets clat (msec): min=363, max=934, avg=648.96, stdev=403.46 lat (msec): min=363, max=934, avg=649.22, stdev=403.44 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8192, max= 8192, per=47.05%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=19.51%, ctx=704, 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=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=160722: Sun Aug 16 23:06:52 2026 write: IOPS=1, BW=7310KiB/s (7485kB/s)(12.0MiB/1681msec); 0 zone resets clat (msec): min=262, max=710, avg=521.42, stdev=232.03 lat (msec): min=262, max=710, avg=521.68, stdev=232.15 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 8175, max= 8192, per=47.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.12%, sys=27.44%, ctx=175, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160723: Sun Aug 16 23:06:52 2026 write: IOPS=1, BW=6711KiB/s (6872kB/s)(12.0MiB/1831msec); 0 zone resets clat (msec): min=242, max=1165, avg=573.00, stdev=514.42 lat (msec): min=242, max=1165, avg=573.26, stdev=514.43 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 313], | 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= 8143, max= 8192, per=46.91%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=18.69%, ctx=87, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=8706KiB/s (8915kB/s), 2176KiB/s-8165KiB/s (2229kB/s-8361kB/s), io=16.0MiB (16.8MB), run=1505-1882msec WRITE: bw=17.0MiB/s (17.8MB/s), 4353KiB/s-7310KiB/s (4457kB/s-7485kB/s), io=32.0MiB (33.6MB), run=1681-1882msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160725: Sun Aug 16 23:06:52 2026 read: IOPS=1, BW=6247KiB/s (6397kB/s)(12.0MiB/1967msec) clat (msec): min=133, max=1134, avg=632.28, stdev=500.81 lat (msec): min=133, max=1134, avg=632.28, stdev=500.81 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8192, max= 8192, per=98.36%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.72%, ctx=73, 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=160726: Sun Aug 16 23:06:52 2026 read: IOPS=0, BW=2087KiB/s (2137kB/s)(4096KiB/1963msec) clat (nsec): min=704553k, max=704553k, avg=704553262.00, stdev= 0.00 lat (nsec): min=704556k, max=704556k, avg=704555958.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 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= 8192, max= 8192, per=98.36%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4173KiB/s (4273kB/s)(8192KiB/1963msec); 0 zone resets clat (msec): min=483, max=729, avg=606.53, stdev=173.98 lat (msec): min=483, max=729, avg=606.79, stdev=173.98 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8192, max= 8192, per=53.25%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=13.86%, ctx=65, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=160727: Sun Aug 16 23:06:52 2026 write: IOPS=1, BW=5769KiB/s (5907kB/s)(12.0MiB/2130msec); 0 zone resets clat (msec): min=73, max=1410, avg=686.21, stdev=675.03 lat (msec): min=74, max=1410, avg=686.44, stdev=675.05 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8192, max= 8192, per=53.25%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.22%, ctx=68, 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=160728: Sun Aug 16 23:06:52 2026 write: IOPS=1, BW=6774KiB/s (6937kB/s)(12.0MiB/1814msec); 0 zone resets clat (msec): min=198, max=1138, avg=581.23, stdev=493.72 lat (msec): min=199, max=1138, avg=582.59, stdev=493.20 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 5580, max= 8192, per=44.76%, avg=6886.00, stdev=1846.96, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=18.53%, ctx=98, 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=8329KiB/s (8529kB/s), 2087KiB/s-6247KiB/s (2137kB/s-6397kB/s), io=16.0MiB (16.8MB), run=1963-1967msec WRITE: bw=15.0MiB/s (15.8MB/s), 4173KiB/s-6774KiB/s (4273kB/s-6937kB/s), io=32.0MiB (33.6MB), run=1814-2130msec