== sanity test 398b: DIO and buffer IO race ============== 22:52:31 (1788749551) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.93011 s, 17.2 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=146660: Sun Sep 6 22:53:37 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(5992KiB/56030msec) clat (usec): min=32, max=700978, avg=18370.54, stdev=22140.90 lat (usec): min=32, max=700979, avg=18371.82, stdev=22140.97 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 71], 10.00th=[ 243], 20.00th=[ 9110], | 30.00th=[ 10945], 40.00th=[ 12780], 50.00th=[ 15139], 60.00th=[ 18220], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 33817], 95.00th=[ 41157], | 99.00th=[ 65799], 99.50th=[ 85459], 99.90th=[139461], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 6, max= 200, per=25.47%, avg=106.73, stdev=33.06, samples=111 iops : min= 1, max= 50, avg=26.19, stdev= 8.40, samples=111 write: IOPS=28, BW=112KiB/s (115kB/s)(6296KiB/56030msec); 0 zone resets clat (usec): min=644, max=232963, avg=17980.15, stdev=17665.70 lat (usec): min=645, max=232964, avg=17981.40, stdev=17665.85 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1500], 10.00th=[ 2008], 20.00th=[ 2999], | 30.00th=[ 4948], 40.00th=[ 9372], 50.00th=[ 13829], 60.00th=[ 18220], | 70.00th=[ 23200], 80.00th=[ 29754], 90.00th=[ 40633], 95.00th=[ 49546], | 99.00th=[ 73925], 99.50th=[ 82314], 99.90th=[145753], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 55, max= 232, per=25.77%, avg=113.14, stdev=34.24, samples=110 iops : min= 13, max= 58, avg=27.80, stdev= 8.66, samples=110 lat (usec) : 50=1.01%, 100=2.54%, 250=1.37%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.39% lat (msec) : 2=4.69%, 4=8.53%, 10=14.03%, 20=32.65%, 50=31.12% lat (msec) : 100=3.26%, 250=0.26%, 750=0.03% cpu : usr=0.11%, sys=15.51%, ctx=7447, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146661: Sun Sep 6 22:53:37 2026 read: IOPS=26, BW=105KiB/s (107kB/s)(5940KiB/56708msec) clat (usec): min=31, max=234831, avg=17792.02, stdev=13525.36 lat (usec): min=32, max=234832, avg=17794.83, stdev=13524.62 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 92], 10.00th=[ 6259], 20.00th=[ 9241], | 30.00th=[ 10945], 40.00th=[ 12649], 50.00th=[ 14877], 60.00th=[ 17171], | 70.00th=[ 20841], 80.00th=[ 26084], 90.00th=[ 33817], 95.00th=[ 40109], | 99.00th=[ 58983], 99.50th=[ 68682], 99.90th=[ 98042], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 6, max= 199, per=24.84%, avg=104.10, stdev=33.86, samples=112 iops : min= 1, max= 49, avg=25.54, stdev= 8.56, samples=112 write: IOPS=27, BW=112KiB/s (115kB/s)(6348KiB/56708msec); 0 zone resets clat (usec): min=707, max=697908, avg=18953.15, stdev=24269.54 lat (usec): min=708, max=697909, avg=18956.66, stdev=24269.12 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1467], 10.00th=[ 2089], 20.00th=[ 3097], | 30.00th=[ 5014], 40.00th=[ 10421], 50.00th=[ 14615], 60.00th=[ 19268], | 70.00th=[ 24249], 80.00th=[ 30278], 90.00th=[ 41681], 95.00th=[ 53216], | 99.00th=[ 72877], 99.50th=[ 80217], 99.90th=[173016], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 31, max= 199, per=25.46%, avg=111.75, stdev=32.27, samples=111 iops : min= 7, max= 49, avg=27.45, stdev= 8.12, samples=111 lat (usec) : 50=0.78%, 100=1.92%, 250=1.30%, 500=0.23%, 750=0.20% lat (usec) : 1000=0.23% lat (msec) : 2=4.26%, 4=8.82%, 10=13.64%, 20=33.24%, 50=31.12% lat (msec) : 100=4.10%, 250=0.13%, 750=0.03% cpu : usr=0.11%, sys=15.39%, ctx=7558, 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=146662: Sun Sep 6 22:53:37 2026 read: IOPS=26, BW=105KiB/s (108kB/s)(6028KiB/57191msec) clat (usec): min=23, max=695911, avg=18351.88, stdev=21925.97 lat (usec): min=23, max=695912, avg=18353.00, stdev=21926.03 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 88], 10.00th=[ 6456], 20.00th=[ 9241], | 30.00th=[ 10945], 40.00th=[ 12911], 50.00th=[ 15139], 60.00th=[ 17695], | 70.00th=[ 21103], 80.00th=[ 25822], 90.00th=[ 33424], 95.00th=[ 41681], | 99.00th=[ 64226], 99.50th=[ 81265], 99.90th=[181404], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 6, max= 192, per=25.00%, avg=104.74, stdev=35.64, samples=113 iops : min= 1, max= 48, avg=25.69, stdev= 8.99, samples=113 write: IOPS=27, BW=109KiB/s (112kB/s)(6260KiB/57191msec); 0 zone resets clat (usec): min=756, max=220423, avg=18743.64, stdev=18173.24 lat (usec): min=756, max=220424, avg=18745.74, stdev=18173.59 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1483], 10.00th=[ 1991], 20.00th=[ 2933], | 30.00th=[ 5276], 40.00th=[ 10421], 50.00th=[ 14877], 60.00th=[ 19530], | 70.00th=[ 23725], 80.00th=[ 31065], 90.00th=[ 41681], 95.00th=[ 51643], | 99.00th=[ 78119], 99.50th=[ 95945], 99.90th=[145753], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 20, max= 231, per=24.74%, avg=108.61, stdev=35.32, samples=113 iops : min= 5, max= 57, avg=26.66, stdev= 8.87, samples=113 lat (usec) : 50=0.62%, 100=2.44%, 250=1.33%, 750=0.07%, 1000=0.42% lat (msec) : 2=4.75%, 4=8.11%, 10=14.23%, 20=32.39%, 50=31.80% lat (msec) : 100=3.55%, 250=0.26%, 750=0.03% cpu : usr=0.11%, sys=15.30%, ctx=7684, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146663: Sun Sep 6 22:53:37 2026 read: IOPS=26, BW=106KiB/s (109kB/s)(6052KiB/56870msec) clat (usec): min=31, max=730818, avg=18527.18, stdev=22960.07 lat (usec): min=32, max=730819, avg=18528.15, stdev=22960.07 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 88], 10.00th=[ 5800], 20.00th=[ 9110], | 30.00th=[ 10945], 40.00th=[ 12780], 50.00th=[ 15008], 60.00th=[ 17957], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 34341], 95.00th=[ 40633], | 99.00th=[ 58983], 99.50th=[ 70779], 99.90th=[219153], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 23, max= 207, per=25.60%, avg=107.25, stdev=36.71, samples=112 iops : min= 5, max= 51, avg=26.32, stdev= 9.26, samples=112 write: IOPS=27, BW=110KiB/s (112kB/s)(6236KiB/56870msec); 0 zone resets clat (usec): min=734, max=149760, avg=18368.54, stdev=17103.55 lat (usec): min=735, max=149762, avg=18369.88, stdev=17103.54 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1450], 10.00th=[ 1991], 20.00th=[ 3163], | 30.00th=[ 5342], 40.00th=[ 10028], 50.00th=[ 14222], 60.00th=[ 18482], | 70.00th=[ 23987], 80.00th=[ 30540], 90.00th=[ 41157], 95.00th=[ 52167], | 99.00th=[ 72877], 99.50th=[ 81265], 99.90th=[115868], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 26, max= 215, per=24.94%, avg=109.50, stdev=32.54, samples=113 iops : min= 6, max= 53, avg=26.88, stdev= 8.19, samples=113 lat (usec) : 50=0.42%, 100=2.57%, 250=1.43%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=4.85%, 4=7.78%, 10=15.04%, 20=31.64%, 50=32.06% lat (msec) : 100=3.61%, 250=0.16%, 750=0.03% cpu : usr=0.13%, sys=15.30%, ctx=7662, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=420KiB/s (430kB/s), 105KiB/s-107KiB/s (107kB/s-110kB/s), io=23.4MiB (24.6MB), run=56030-57191msec WRITE: bw=440KiB/s (450kB/s), 109KiB/s-112KiB/s (112kB/s-115kB/s), io=24.6MiB (25.7MB), run=56030-57191msec fio: pid=146656, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=146656: Sun Sep 6 22:54:24 2026 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(2900KiB/67155msec) clat (msec): min=4, max=713, avg=23.33, stdev=31.79 lat (msec): min=4, max=713, avg=23.33, stdev=31.79 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 109], 99.50th=[ 127], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 143, per=21.67%, avg=43.77, stdev=29.02, samples=130 iops : min= 1, max= 35, avg=10.50, stdev= 7.35, samples=130 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(3032KiB/67155msec); 0 zone resets clat (msec): min=19, max=272, avg=66.01, stdev=32.99 lat (msec): min=19, max=272, avg=66.02, stdev=32.99 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 62], 60.00th=[ 69], | 70.00th=[ 79], 80.00th=[ 90], 90.00th=[ 106], 95.00th=[ 121], | 99.00th=[ 188], 99.50th=[ 230], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 112, per=21.26%, avg=44.86, stdev=22.43, samples=132 iops : min= 1, max= 28, avg=10.77, stdev= 5.73, samples=132 lat (msec) : 10=15.09%, 20=13.34%, 50=35.71%, 100=28.57%, 250=7.08% lat (msec) : 500=0.07%, 750=0.07% cpu : usr=0.06%, sys=3.44%, ctx=2284, majf=0, minf=19 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=726,758,0,0 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=146657: Sun Sep 6 22:54:24 2026 read: IOPS=14, BW=57.4KiB/s (58.8kB/s)(5940KiB/103504msec) clat (msec): min=3, max=728, avg=16.25, stdev=23.85 lat (msec): min=3, max=728, avg=16.25, stdev=23.85 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 16], 80.00th=[ 21], 90.00th=[ 32], 95.00th=[ 44], | 99.00th=[ 72], 99.50th=[ 92], 99.90th=[ 232], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 152, per=28.80%, avg=58.17, stdev=35.76, samples=202 iops : min= 1, max= 38, avg=14.16, stdev= 9.03, samples=202 write: IOPS=15, BW=61.3KiB/s (62.8kB/s)(6348KiB/103504msec); 0 zone resets clat (msec): min=18, max=240, avg=49.88, stdev=27.91 lat (msec): min=18, max=240, avg=49.88, stdev=27.91 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 70], 90.00th=[ 89], 95.00th=[ 107], | 99.00th=[ 142], 99.50th=[ 163], 99.90th=[ 230], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 15, max= 136, per=29.06%, avg=61.33, stdev=29.16, samples=205 iops : min= 3, max= 34, avg=14.94, stdev= 7.40, samples=205 lat (msec) : 4=0.20%, 10=20.31%, 20=18.23%, 50=41.93%, 100=15.82% lat (msec) : 250=3.48%, 750=0.03% cpu : usr=0.09%, sys=3.85%, ctx=5846, 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=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=146658: Sun Sep 6 22:54:24 2026 read: IOPS=14, BW=58.4KiB/s (59.8kB/s)(6028KiB/103180msec) clat (msec): min=3, max=235, avg=16.52, stdev=15.58 lat (msec): min=3, max=235, avg=16.52, stdev=15.58 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 45], | 99.00th=[ 71], 99.50th=[ 105], 99.90th=[ 138], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 7, max= 168, per=29.49%, avg=59.57, stdev=34.31, samples=200 iops : min= 1, max= 42, avg=14.51, stdev= 8.66, samples=200 write: IOPS=15, BW=60.7KiB/s (62.1kB/s)(6260KiB/103180msec); 0 zone resets clat (msec): min=17, max=770, avg=49.88, stdev=33.04 lat (msec): min=17, max=770, avg=49.88, stdev=33.04 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 70], 90.00th=[ 90], 95.00th=[ 109], | 99.00th=[ 138], 99.50th=[ 176], 99.90th=[ 236], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 15, max= 128, per=28.73%, avg=60.61, stdev=30.45, samples=204 iops : min= 3, max= 32, avg=14.76, stdev= 7.72, samples=204 lat (msec) : 4=0.13%, 10=19.69%, 20=18.59%, 50=42.55%, 100=15.14% lat (msec) : 250=3.87%, 1000=0.03% cpu : usr=0.08%, sys=3.86%, ctx=5839, 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=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=146659: Sun Sep 6 22:54:24 2026 read: IOPS=14, BW=58.7KiB/s (60.1kB/s)(6052KiB/103050msec) clat (msec): min=3, max=146, avg=15.55, stdev=14.44 lat (msec): min=3, max=146, avg=15.55, stdev=14.44 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 16], 80.00th=[ 20], 90.00th=[ 31], 95.00th=[ 42], | 99.00th=[ 77], 99.50th=[ 105], 99.90th=[ 132], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 7, max= 175, per=29.53%, avg=59.66, stdev=35.82, samples=201 iops : min= 1, max= 43, avg=14.53, stdev= 9.04, samples=201 write: IOPS=15, BW=60.5KiB/s (61.0kB/s)(6236KiB/103050msec); 0 zone resets clat (msec): min=17, max=789, avg=50.87, stdev=34.08 lat (msec): min=17, max=789, avg=50.87, stdev=34.08 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 30], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 41], 60.00th=[ 46], | 70.00th=[ 56], 80.00th=[ 69], 90.00th=[ 90], 95.00th=[ 107], | 99.00th=[ 148], 99.50th=[ 184], 99.90th=[ 249], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 120, per=28.67%, avg=60.50, stdev=28.16, samples=204 iops : min= 1, max= 30, avg=14.74, stdev= 7.16, samples=204 lat (msec) : 4=0.13%, 10=20.64%, 20=19.27%, 50=40.79%, 100=15.69% lat (msec) : 250=3.45%, 1000=0.03% cpu : usr=0.08%, sys=3.85%, ctx=5840, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=202KiB/s (207kB/s), 43.2KiB/s-58.7KiB/s (44.2kB/s-60.1kB/s), io=20.4MiB (21.4MB), run=67155-103504msec WRITE: bw=211KiB/s (216kB/s), 45.1KiB/s-61.3KiB/s (46.2kB/s-62.8kB/s), io=21.4MiB (22.4MB), run=67155-103504msec 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=146690: Sun Sep 6 22:54:42 2026 read: IOPS=27, BW=440KiB/s (450kB/s)(5920KiB/13468msec) clat (usec): min=31, max=75584, avg=16239.34, stdev=11445.20 lat (usec): min=31, max=75586, avg=16240.28, stdev=11445.22 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 93], 10.00th=[ 114], 20.00th=[ 8225], | 30.00th=[10552], 40.00th=[13698], 50.00th=[16319], 60.00th=[18482], | 70.00th=[20579], 80.00th=[24249], 90.00th=[30016], 95.00th=[35390], | 99.00th=[50594], 99.50th=[57934], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 286, max= 704, per=24.88%, avg=437.08, stdev=122.94, samples=26 iops : min= 17, max= 44, avg=26.88, stdev= 7.76, samples=26 write: IOPS=29, BW=473KiB/s (484kB/s)(6368KiB/13468msec); 0 zone resets clat (usec): min=1180, max=132610, avg=18419.01, stdev=16340.42 lat (usec): min=1181, max=132611, avg=18420.97, stdev=16340.52 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2704], 10.00th=[ 3589], 20.00th=[ 5080], | 30.00th=[ 7570], 40.00th=[ 11076], 50.00th=[ 14222], 60.00th=[ 17695], | 70.00th=[ 22414], 80.00th=[ 29492], 90.00th=[ 38011], 95.00th=[ 49546], | 99.00th=[ 77071], 99.50th=[ 93848], 99.90th=[132645], 99.95th=[132645], | 99.99th=[132645] bw ( KiB/s): min= 191, max= 768, per=25.66%, avg=474.27, stdev=119.38, samples=26 iops : min= 11, max= 48, avg=29.23, stdev= 7.66, samples=26 lat (usec) : 50=0.39%, 100=2.60%, 250=5.73%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.43%, 4=5.60%, 10=15.49%, 20=34.24%, 50=31.12% lat (msec) : 100=2.86%, 250=0.13% cpu : usr=0.13%, sys=24.27%, ctx=2158, 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=146691: Sun Sep 6 22:54:42 2026 read: IOPS=26, BW=426KiB/s (436kB/s)(5744KiB/13476msec) clat (usec): min=46, max=88831, avg=18761.07, stdev=12211.30 lat (usec): min=47, max=88832, avg=18762.26, stdev=12211.39 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 109], 10.00th=[ 167], 20.00th=[11338], | 30.00th=[12911], 40.00th=[15401], 50.00th=[17433], 60.00th=[20317], | 70.00th=[23200], 80.00th=[26870], 90.00th=[32375], 95.00th=[39060], | 99.00th=[58983], 99.50th=[87557], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 192, max= 608, per=24.29%, avg=426.85, stdev=99.37, samples=26 iops : min= 12, max= 38, avg=26.27, stdev= 6.32, samples=26 write: IOPS=30, BW=486KiB/s (497kB/s)(6544KiB/13476msec); 0 zone resets clat (usec): min=1357, max=199839, avg=16397.28, stdev=16205.71 lat (usec): min=1360, max=199841, avg=16399.12, stdev=16205.71 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 2311], 10.00th=[ 3163], 20.00th=[ 4686], | 30.00th=[ 6063], 40.00th=[ 8160], 50.00th=[ 12387], 60.00th=[ 16057], | 70.00th=[ 20055], 80.00th=[ 27395], 90.00th=[ 37487], 95.00th=[ 42730], | 99.00th=[ 61604], 99.50th=[ 65799], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 286, max= 734, per=26.11%, avg=482.42, stdev=116.09, samples=26 iops : min= 17, max= 45, avg=29.73, stdev= 7.22, samples=26 lat (usec) : 50=0.13%, 100=1.43%, 250=3.78%, 500=0.39% lat (msec) : 2=1.69%, 4=6.12%, 10=18.62%, 20=32.03%, 50=33.85% lat (msec) : 100=1.82%, 250=0.13% cpu : usr=0.16%, sys=25.02%, ctx=2167, 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=146692: Sun Sep 6 22:54:42 2026 read: IOPS=28, BW=459KiB/s (470kB/s)(6256KiB/13629msec) clat (usec): min=37, max=74768, avg=16944.57, stdev=12910.46 lat (usec): min=37, max=74769, avg=16945.54, stdev=12910.49 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 85], 10.00th=[ 115], 20.00th=[ 210], | 30.00th=[10683], 40.00th=[13960], 50.00th=[16319], 60.00th=[19530], | 70.00th=[22414], 80.00th=[27132], 90.00th=[33162], 95.00th=[39060], | 99.00th=[56886], 99.50th=[62653], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 185, max= 768, per=26.47%, avg=465.15, stdev=132.66, samples=26 iops : min= 11, max= 48, avg=28.65, stdev= 8.39, samples=26 write: IOPS=27, BW=443KiB/s (453kB/s)(6032KiB/13629msec); 0 zone resets clat (usec): min=1107, max=198337, avg=18301.58, stdev=18867.90 lat (usec): min=1109, max=198338, avg=18303.45, stdev=18867.89 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 2409], 10.00th=[ 3261], 20.00th=[ 4424], | 30.00th=[ 6325], 40.00th=[ 9110], 50.00th=[ 12911], 60.00th=[ 17433], | 70.00th=[ 22414], 80.00th=[ 30016], 90.00th=[ 38536], 95.00th=[ 55313], | 99.00th=[ 83362], 99.50th=[105382], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 264, max= 699, per=23.67%, avg=437.46, stdev=107.75, samples=26 iops : min= 16, max= 43, avg=26.92, stdev= 6.88, samples=26 lat (usec) : 50=0.65%, 100=2.86%, 250=7.42%, 500=0.39%, 750=0.13% lat (msec) : 2=1.43%, 4=7.16%, 10=15.23%, 20=28.52%, 50=32.68% lat (msec) : 100=3.26%, 250=0.26% cpu : usr=0.14%, sys=23.59%, ctx=2043, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146693: Sun Sep 6 22:54:42 2026 read: IOPS=27, BW=444KiB/s (455kB/s)(6032KiB/13578msec) clat (usec): min=30, max=90202, avg=19151.15, stdev=14798.61 lat (usec): min=31, max=90203, avg=19152.78, stdev=14799.89 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 93], 10.00th=[ 133], 20.00th=[ 9372], | 30.00th=[12387], 40.00th=[15008], 50.00th=[17695], 60.00th=[20841], | 70.00th=[23987], 80.00th=[29492], 90.00th=[33162], 95.00th=[41681], | 99.00th=[77071], 99.50th=[82314], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 288, max= 636, per=25.00%, avg=439.27, stdev=92.90, samples=26 iops : min= 18, max= 39, avg=27.04, stdev= 5.76, samples=26 write: IOPS=28, BW=461KiB/s (472kB/s)(6256KiB/13578msec); 0 zone resets clat (usec): min=1095, max=67601, avg=16050.63, stdev=13381.93 lat (usec): min=1096, max=67602, avg=16053.17, stdev=13381.64 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 3195], 10.00th=[ 3851], 20.00th=[ 4948], | 30.00th=[ 6194], 40.00th=[ 8291], 50.00th=[11600], 60.00th=[15008], | 70.00th=[20055], 80.00th=[25560], 90.00th=[35914], 95.00th=[44827], | 99.00th=[60556], 99.50th=[62653], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 255, max= 832, per=24.89%, avg=460.04, stdev=125.07, samples=26 iops : min= 15, max= 52, avg=28.35, stdev= 7.96, samples=26 lat (usec) : 50=0.52%, 100=2.60%, 250=4.69%, 500=0.91%, 1000=0.13% lat (msec) : 2=0.65%, 4=5.21%, 10=19.14%, 20=30.08%, 50=32.81% lat (msec) : 100=3.26% cpu : usr=0.15%, sys=24.17%, ctx=2157, 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=1757KiB/s (1800kB/s), 426KiB/s-459KiB/s (436kB/s-470kB/s), io=23.4MiB (24.5MB), run=13468-13629msec WRITE: bw=1849KiB/s (1893kB/s), 443KiB/s-486KiB/s (453kB/s-497kB/s), io=24.6MiB (25.8MB), run=13468-13629msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146694: Sun Sep 6 22:54:54 2026 read: IOPS=14, BW=236KiB/s (242kB/s)(5920KiB/25057msec) clat (msec): min=3, max=206, avg=16.74, stdev=18.70 lat (msec): min=3, max=206, avg=16.75, stdev=18.70 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 23], 90.00th=[ 37], 95.00th=[ 55], | 99.00th=[ 82], 99.50th=[ 97], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 64, max= 576, per=24.52%, avg=232.45, stdev=117.83, samples=49 iops : min= 4, max= 36, avg=14.02, stdev= 7.48, samples=49 write: IOPS=15, BW=254KiB/s (260kB/s)(6368KiB/25057msec); 0 zone resets clat (msec): min=19, max=166, avg=47.11, stdev=24.17 lat (msec): min=19, max=166, avg=47.11, stdev=24.17 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 29], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 61], 90.00th=[ 80], 95.00th=[ 100], | 99.00th=[ 140], 99.50th=[ 163], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 95, max= 448, per=25.35%, avg=252.96, stdev=126.06, samples=49 iops : min= 5, max= 28, avg=15.31, stdev= 8.08, samples=49 lat (msec) : 4=0.13%, 10=26.30%, 20=10.29%, 50=43.62%, 100=17.19% lat (msec) : 250=2.47% cpu : usr=0.08%, sys=5.68%, ctx=1539, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146695: Sun Sep 6 22:54:54 2026 read: IOPS=14, BW=227KiB/s (233kB/s)(5744KiB/25250msec) clat (msec): min=4, max=112, avg=15.31, stdev=16.30 lat (msec): min=4, max=112, avg=15.31, stdev=16.30 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 21], 90.00th=[ 33], 95.00th=[ 58], | 99.00th=[ 90], 99.50th=[ 96], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 31, max= 608, per=24.95%, avg=236.52, stdev=150.46, samples=48 iops : min= 1, max= 38, avg=14.27, stdev= 9.53, samples=48 write: IOPS=16, BW=259KiB/s (265kB/s)(6544KiB/25250msec); 0 zone resets clat (msec): min=18, max=243, avg=47.99, stdev=26.74 lat (msec): min=18, max=243, avg=47.99, stdev=26.74 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 36], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 63], 90.00th=[ 86], 95.00th=[ 105], | 99.00th=[ 132], 99.50th=[ 159], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 64, max= 510, per=25.97%, avg=259.16, stdev=125.29, samples=50 iops : min= 4, max= 31, avg=15.68, stdev= 8.04, samples=50 lat (msec) : 10=26.56%, 20=11.46%, 50=42.71%, 100=16.02%, 250=3.26% cpu : usr=0.11%, sys=5.68%, ctx=1534, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146696: Sun Sep 6 22:54:54 2026 read: IOPS=16, BW=258KiB/s (264kB/s)(6256KiB/24276msec) clat (msec): min=3, max=121, avg=15.17, stdev=16.71 lat (msec): min=3, max=121, avg=15.17, stdev=16.71 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 13], 80.00th=[ 18], 90.00th=[ 33], 95.00th=[ 52], | 99.00th=[ 80], 99.50th=[ 121], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 63, max= 734, per=27.37%, avg=259.44, stdev=162.48, samples=48 iops : min= 3, max= 45, avg=15.73, stdev=10.33, samples=48 write: IOPS=15, BW=248KiB/s (254kB/s)(6032KiB/24276msec); 0 zone resets clat (msec): min=18, max=224, avg=48.52, stdev=26.38 lat (msec): min=18, max=224, avg=48.52, stdev=26.38 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 30], | 30.00th=[ 33], 40.00th=[ 36], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 65], 90.00th=[ 85], 95.00th=[ 106], | 99.00th=[ 131], 99.50th=[ 153], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 63, max= 448, per=24.80%, avg=247.48, stdev=118.67, samples=48 iops : min= 3, max= 28, avg=14.98, stdev= 7.65, samples=48 lat (msec) : 4=0.13%, 10=30.47%, 20=10.94%, 50=40.23%, 100=14.84% lat (msec) : 250=3.39% cpu : usr=0.09%, sys=5.93%, ctx=1561, 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=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=146697: Sun Sep 6 22:54:54 2026 read: IOPS=15, BW=244KiB/s (250kB/s)(6032KiB/24672msec) clat (msec): min=4, max=121, avg=15.42, stdev=16.13 lat (msec): min=4, max=121, avg=15.42, stdev=16.13 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 19], 90.00th=[ 34], 95.00th=[ 47], | 99.00th=[ 81], 99.50th=[ 122], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 63, max= 608, per=25.79%, avg=244.49, stdev=135.44, samples=49 iops : min= 3, max= 38, avg=14.78, stdev= 8.61, samples=49 write: IOPS=15, BW=254KiB/s (260kB/s)(6256KiB/24672msec); 0 zone resets clat (msec): min=19, max=223, avg=47.94, stdev=25.76 lat (msec): min=19, max=223, avg=47.94, stdev=25.76 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 36], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 54], 80.00th=[ 63], 90.00th=[ 82], 95.00th=[ 92], | 99.00th=[ 148], 99.50th=[ 180], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 95, max= 512, per=25.47%, avg=254.14, stdev=117.50, samples=49 iops : min= 5, max= 32, avg=15.39, stdev= 7.55, samples=49 lat (msec) : 10=27.60%, 20=12.37%, 50=40.62%, 100=16.80%, 250=2.60% cpu : usr=0.08%, sys=5.54%, ctx=1490, 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=949KiB/s (971kB/s), 227KiB/s-258KiB/s (233kB/s-264kB/s), io=23.4MiB (24.5MB), run=24276-25250msec WRITE: bw=998KiB/s (1022kB/s), 248KiB/s-259KiB/s (254kB/s-265kB/s), io=24.6MiB (25.8MB), run=24276-25250msec 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=146708: Sun Sep 6 22:55:03 2026 read: IOPS=2, BW=2406KiB/s (2464kB/s)(7168KiB/2979msec) clat (msec): min=44, max=524, avg=208.27, stdev=186.33 lat (msec): min=44, max=524, avg=208.27, stdev=186.33 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 65], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 144], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 414], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 2048, max= 4096, per=53.18%, avg=3170.67, stdev=1038.16, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1719KiB/s (1760kB/s)(5120KiB/2979msec); 0 zone resets clat (msec): min=70, max=542, avg=287.33, stdev=171.67 lat (msec): min=70, max=542, avg=287.40, stdev=171.68 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 330], 80.00th=[ 330], 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= 2027, max= 4087, per=36.62%, avg=3057.00, stdev=1456.64, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 50=8.33%, 100=25.00%, 250=25.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=14.67%, ctx=135, 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=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=146709: Sun Sep 6 22:55:03 2026 read: IOPS=0, BW=596KiB/s (611kB/s)(2048KiB/3435msec) clat (msec): min=48, max=103, avg=76.12, stdev=38.47 lat (msec): min=48, max=103, avg=76.12, stdev=38.47 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 50], | 30.00th=[ 50], 40.00th=[ 50], 50.00th=[ 50], 60.00th=[ 104], | 70.00th=[ 104], 80.00th=[ 104], 90.00th=[ 104], 95.00th=[ 104], | 99.00th=[ 104], 99.50th=[ 104], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 1686, max= 2048, per=31.31%, avg=1867.00, stdev=255.97, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2981KiB/s (3053kB/s)(10.0MiB/3435msec); 0 zone resets clat (msec): min=95, max=835, avg=326.80, stdev=240.04 lat (msec): min=95, max=835, avg=326.89, stdev=240.04 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 109], | 30.00th=[ 127], 40.00th=[ 169], 50.00th=[ 271], 60.00th=[ 275], | 70.00th=[ 321], 80.00th=[ 498], 90.00th=[ 575], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1686, max= 4096, per=31.94%, avg=2666.00, stdev=1116.12, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.47, samples=6 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=13.66%, ctx=154, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146710: Sun Sep 6 22:55:03 2026 read: IOPS=1, BW=1819KiB/s (1862kB/s)(6144KiB/3378msec) clat (msec): min=60, max=449, avg=212.03, stdev=170.07 lat (msec): min=60, max=449, avg=212.03, stdev=170.07 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 79], | 30.00th=[ 79], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 150], | 70.00th=[ 405], 80.00th=[ 405], 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= 2027, max= 4096, per=42.83%, avg=2553.50, stdev=1028.37, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1819KiB/s (1862kB/s)(6144KiB/3378msec); 0 zone resets clat (msec): min=157, max=585, avg=343.13, stdev=175.46 lat (msec): min=157, max=585, avg=343.26, stdev=175.44 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 342], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2048, max= 3385, per=28.54%, avg=2382.25, stdev=668.50, samples=4 iops : min= 2, max= 3, avg= 2.25, stdev= 0.50, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=11.05%, ctx=115, 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=146711: Sun Sep 6 22:55:03 2026 read: IOPS=1, BW=2027KiB/s (2076kB/s)(5120KiB/2526msec) clat (msec): min=76, max=289, avg=145.63, stdev=88.14 lat (msec): min=76, max=289, avg=145.63, stdev=88.14 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 111], 60.00th=[ 111], | 70.00th=[ 167], 80.00th=[ 167], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 2048, max= 6083, per=68.19%, avg=4065.50, stdev=2853.18, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2838KiB/s (2906kB/s)(7168KiB/2526msec); 0 zone resets clat (msec): min=100, max=463, avg=251.07, stdev=134.61 lat (msec): min=100, max=463, avg=251.20, stdev=134.59 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 134], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 211], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 401], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2048, max= 4096, per=38.03%, avg=3174.33, stdev=1039.23, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=58.33%, 500=25.00% cpu : usr=0.04%, sys=14.57%, ctx=105, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=5962KiB/s (6105kB/s), 596KiB/s-2406KiB/s (611kB/s-2464kB/s), io=20.0MiB (20.0MB), run=2526-3435msec WRITE: bw=8347KiB/s (8547kB/s), 1719KiB/s-2981KiB/s (1760kB/s-3053kB/s), io=28.0MiB (29.4MB), run=2526-3435msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146713: Sun Sep 6 22:55:03 2026 read: IOPS=2, BW=2962KiB/s (3033kB/s)(7168KiB/2420msec) clat (usec): min=1341, max=251876, avg=163163.92, stdev=83600.86 lat (usec): min=1342, max=251877, avg=163165.33, stdev=83600.85 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1336], 10.00th=[ 1336], 20.00th=[135267], | 30.00th=[143655], 40.00th=[143655], 50.00th=[170918], 60.00th=[208667], | 70.00th=[208667], 80.00th=[229639], 90.00th=[252707], 95.00th=[252707], | 99.00th=[252707], 99.50th=[252707], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 1943, max= 4096, per=48.26%, avg=2865.25, stdev=1077.28, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=2, BW=2116KiB/s (2166kB/s)(5120KiB/2420msec); 0 zone resets clat (msec): min=130, max=306, avg=230.76, stdev=72.67 lat (msec): min=130, max=306, avg=230.83, stdev=72.67 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 243], 60.00th=[ 243], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 1943, max= 3961, per=31.89%, avg=2650.67, stdev=1136.00, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 2=8.33%, 250=66.67%, 500=25.00% cpu : usr=0.04%, sys=51.59%, ctx=747, 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=146714: Sun Sep 6 22:55:03 2026 read: IOPS=0, BW=594KiB/s (608kB/s)(2048KiB/3449msec) clat (msec): min=80, max=158, avg=119.21, stdev=55.29 lat (msec): min=80, max=158, avg=119.21, stdev=55.29 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 81], 60.00th=[ 159], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 159], 95.00th=[ 159], | 99.00th=[ 159], 99.50th=[ 159], 99.90th=[ 159], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 1709, max= 1980, per=31.07%, avg=1844.50, stdev=191.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2969KiB/s (3040kB/s)(10.0MiB/3449msec); 0 zone resets clat (msec): min=80, max=693, avg=310.21, stdev=221.53 lat (msec): min=80, max=694, avg=310.29, stdev=221.54 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 99], | 30.00th=[ 157], 40.00th=[ 171], 50.00th=[ 186], 60.00th=[ 222], | 70.00th=[ 409], 80.00th=[ 468], 90.00th=[ 625], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1709, max= 4096, per=33.10%, avg=2751.40, stdev=1173.24, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (msec) : 100=25.00%, 250=41.67%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=32.98%, ctx=463, 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=146715: Sun Sep 6 22:55:03 2026 read: IOPS=1, BW=1990KiB/s (2037kB/s)(6144KiB/3088msec) clat (usec): min=403, max=309079, avg=123909.11, stdev=119288.72 lat (usec): min=405, max=309081, avg=123910.36, stdev=119288.70 clat percentiles (usec): | 1.00th=[ 404], 5.00th=[ 404], 10.00th=[ 404], 20.00th=[ 494], | 30.00th=[ 494], 40.00th=[106431], 50.00th=[106431], 60.00th=[124257], | 70.00th=[202376], 80.00th=[202376], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 1980, max= 5731, per=54.79%, avg=3253.00, stdev=2146.28, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1990KiB/s (2037kB/s)(6144KiB/3088msec); 0 zone resets clat (msec): min=175, max=628, avg=387.03, stdev=183.69 lat (msec): min=176, max=628, avg=387.08, stdev=183.70 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 426], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1735, max= 3820, per=28.71%, avg=2386.50, stdev=964.48, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=16.67% lat (msec) : 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=31.58%, ctx=509, 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=146716: Sun Sep 6 22:55:03 2026 read: IOPS=1, BW=1908KiB/s (1953kB/s)(5120KiB/2684msec) clat (usec): min=517, max=211639, avg=84764.25, stdev=99930.21 lat (usec): min=518, max=211640, avg=84765.28, stdev=99930.07 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 519], | 30.00th=[ 519], 40.00th=[ 519], 50.00th=[ 39060], 60.00th=[ 39060], | 70.00th=[170918], 80.00th=[170918], 90.00th=[210764], 95.00th=[210764], | 99.00th=[210764], 99.50th=[210764], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 1980, max= 5731, per=64.94%, avg=3855.50, stdev=2652.36, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2671KiB/s (2735kB/s)(7168KiB/2684msec); 0 zone resets clat (msec): min=153, max=690, avg=313.74, stdev=195.99 lat (msec): min=153, max=691, avg=313.81, stdev=196.00 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 243], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 405], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1723, max= 4096, per=34.94%, avg=2904.75, stdev=1225.89, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.04%, sys=41.11%, ctx=348, 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=5938KiB/s (6080kB/s), 594KiB/s-2962KiB/s (608kB/s-3033kB/s), io=20.0MiB (20.0MB), run=2420-3449msec WRITE: bw=8313KiB/s (8513kB/s), 1990KiB/s-2969KiB/s (2037kB/s-3040kB/s), io=28.0MiB (29.4MB), run=2420-3449msec 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=146722: Sun Sep 6 22:55:11 2026 read: IOPS=1, BW=6350KiB/s (6503kB/s)(12.0MiB/1935msec) clat (msec): min=525, max=704, avg=610.76, stdev=89.72 lat (msec): min=525, max=704, avg=610.76, stdev=89.72 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 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= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=14.43%, ctx=83, 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=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=146723: Sun Sep 6 22:55:11 2026 read: IOPS=0, BW=1739KiB/s (1781kB/s)(4096KiB/2355msec) clat (nsec): min=228253k, max=228253k, avg=228252629.00, stdev= 0.00 lat (nsec): min=228255k, max=228255k, avg=228254932.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 228], 95.00th=[ 228], | 99.00th=[ 228], 99.50th=[ 228], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 6131, max= 6131, per=88.13%, avg=6131.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3479KiB/s (3562kB/s)(8192KiB/2355msec); 0 zone resets clat (msec): min=523, max=1487, avg=1005.48, stdev=681.32 lat (msec): min=523, max=1487, avg=1005.70, stdev=681.45 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8192, max= 8192, per=58.88%, 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=16.48%, ctx=82, 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=146724: Sun Sep 6 22:55:11 2026 write: IOPS=1, BW=5611KiB/s (5746kB/s)(12.0MiB/2190msec); 0 zone resets clat (msec): min=161, max=1007, avg=719.78, stdev=483.83 lat (msec): min=161, max=1007, avg=720.10, stdev=483.81 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8159, max= 8192, per=58.76%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.05%, sys=11.74%, ctx=240, 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=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=146725: Sun Sep 6 22:55:11 2026 write: IOPS=1, BW=6804KiB/s (6967kB/s)(12.0MiB/1806msec); 0 zone resets clat (msec): min=251, max=1153, avg=567.24, stdev=508.07 lat (msec): min=251, max=1153, avg=567.56, stdev=508.08 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 296], | 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=12525, max=12525, per=90.02%, avg=12525.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=19.50%, ctx=95, 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=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=6957KiB/s (7124kB/s), 1739KiB/s-6350KiB/s (1781kB/s-6503kB/s), io=16.0MiB (16.8MB), run=1935-2355msec WRITE: bw=13.6MiB/s (14.2MB/s), 3479KiB/s-6804KiB/s (3562kB/s-6967kB/s), io=32.0MiB (33.6MB), run=1806-2355msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146726: Sun Sep 6 22:55:11 2026 read: IOPS=1, BW=6919KiB/s (7085kB/s)(12.0MiB/1776msec) clat (msec): min=498, max=600, avg=548.94, stdev=51.03 lat (msec): min=498, max=600, avg=548.94, stdev=51.03 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7937, max= 8192, per=94.31%, avg=8064.50, stdev=180.31, 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=0.00%, sys=39.55%, ctx=2132, 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=146727: Sun Sep 6 22:55:11 2026 read: IOPS=0, BW=2138KiB/s (2189kB/s)(4096KiB/1916msec) clat (nsec): min=616866k, max=616866k, avg=616865927.00, stdev= 0.00 lat (nsec): min=616868k, max=616868k, avg=616868129.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 6380, max= 6380, per=74.61%, avg=6380.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4276KiB/s (4378kB/s)(8192KiB/1916msec); 0 zone resets clat (msec): min=355, max=916, avg=636.41, stdev=396.57 lat (msec): min=356, max=917, avg=636.78, stdev=396.65 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7937, max= 7937, per=56.27%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=25.90%, ctx=572, 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=146728: Sun Sep 6 22:55:11 2026 write: IOPS=1, BW=5290KiB/s (5417kB/s)(12.0MiB/2323msec); 0 zone resets clat (msec): min=155, max=1179, avg=747.46, stdev=530.35 lat (msec): min=155, max=1179, avg=747.73, stdev=530.36 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8192, max= 8192, per=58.08%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.19%, ctx=51, 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=146729: Sun Sep 6 22:55:11 2026 write: IOPS=1, BW=6519KiB/s (6675kB/s)(12.0MiB/1885msec); 0 zone resets clat (msec): min=236, max=1097, avg=609.12, stdev=442.15 lat (msec): min=236, max=1098, avg=609.86, stdev=442.01 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 6703, max= 7937, per=51.90%, avg=7320.00, stdev=872.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=13.64%, ctx=207, 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=8551KiB/s (8756kB/s), 2138KiB/s-6919KiB/s (2189kB/s-7085kB/s), io=16.0MiB (16.8MB), run=1776-1916msec WRITE: bw=13.8MiB/s (14.4MB/s), 4276KiB/s-6519KiB/s (4378kB/s-6675kB/s), io=32.0MiB (33.6MB), run=1885-2323msec