== sanity test 398b: DIO and buffer IO race ============== 03:13:05 (1772179985) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.09819 s, 16.2 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=182119: Fri Feb 27 03:14:10 2026 read: IOPS=27, BW=109KiB/s (111kB/s)(5992KiB/55208msec) clat (usec): min=191, max=702229, avg=20180.20, stdev=20682.37 lat (usec): min=194, max=702231, avg=20181.16, stdev=20682.38 clat percentiles (usec): | 1.00th=[ 367], 5.00th=[ 7242], 10.00th=[ 9241], 20.00th=[ 11338], | 30.00th=[ 13304], 40.00th=[ 15270], 50.00th=[ 17957], 60.00th=[ 20841], | 70.00th=[ 23725], 80.00th=[ 27132], 90.00th=[ 32637], 95.00th=[ 37487], | 99.00th=[ 55837], 99.50th=[ 70779], 99.90th=[114820], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 158, per=24.78%, avg=107.53, stdev=25.81, samples=109 iops : min= 1, max= 39, avg=26.39, stdev= 6.52, samples=109 write: IOPS=28, BW=114KiB/s (117kB/s)(6296KiB/55208msec); 0 zone resets clat (usec): min=774, max=94898, avg=15722.07, stdev=13181.63 lat (usec): min=774, max=94899, avg=15723.11, stdev=13181.63 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1844], 10.00th=[ 2573], 20.00th=[ 3621], | 30.00th=[ 5735], 40.00th=[ 9896], 50.00th=[12911], 60.00th=[16319], | 70.00th=[20055], 80.00th=[25297], 90.00th=[32900], 95.00th=[40633], | 99.00th=[60031], 99.50th=[67634], 99.90th=[85459], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 31, max= 174, per=24.98%, avg=113.64, stdev=29.23, samples=108 iops : min= 7, max= 43, avg=27.93, stdev= 7.38, samples=108 lat (usec) : 250=0.33%, 500=0.59%, 750=0.46%, 1000=0.26% lat (msec) : 2=3.03%, 4=8.46%, 10=13.83%, 20=36.82%, 50=34.31% lat (msec) : 100=1.86%, 250=0.03%, 750=0.03% cpu : usr=0.11%, sys=18.47%, ctx=8630, 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=182122: Fri Feb 27 03:14:10 2026 read: IOPS=27, BW=109KiB/s (112kB/s)(5940KiB/54357msec) clat (usec): min=140, max=115096, avg=19698.80, stdev=11040.38 lat (usec): min=141, max=115098, avg=19699.70, stdev=11040.37 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 7767], 10.00th=[ 9372], 20.00th=[ 11469], | 30.00th=[ 13042], 40.00th=[ 15139], 50.00th=[ 17695], 60.00th=[ 20317], | 70.00th=[ 23200], 80.00th=[ 26608], 90.00th=[ 33162], 95.00th=[ 39060], | 99.00th=[ 52691], 99.50th=[ 73925], 99.90th=[108528], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 7, max= 176, per=25.11%, avg=108.98, stdev=31.00, samples=108 iops : min= 1, max= 44, avg=26.76, stdev= 7.86, samples=108 write: IOPS=29, BW=117KiB/s (120kB/s)(6348KiB/54357msec); 0 zone resets clat (usec): min=820, max=693782, avg=15674.67, stdev=21689.70 lat (usec): min=821, max=693783, avg=15675.89, stdev=21689.63 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1844], 10.00th=[ 2409], 20.00th=[ 3556], | 30.00th=[ 5407], 40.00th=[ 8979], 50.00th=[ 11994], 60.00th=[ 15008], | 70.00th=[ 19530], 80.00th=[ 24511], 90.00th=[ 33162], 95.00th=[ 40109], | 99.00th=[ 60031], 99.50th=[ 67634], 99.90th=[127402], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 63, max= 264, per=25.77%, avg=117.25, stdev=33.29, samples=107 iops : min= 15, max= 66, avg=28.83, stdev= 8.40, samples=107 lat (usec) : 250=0.20%, 500=0.26%, 750=0.39%, 1000=0.33% lat (msec) : 2=2.96%, 4=9.08%, 10=14.81%, 20=37.27%, 50=32.62% lat (msec) : 100=1.95%, 250=0.10%, 750=0.03% cpu : usr=0.11%, sys=18.62%, ctx=8493, 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=182123: Fri Feb 27 03:14:10 2026 read: IOPS=27, BW=112KiB/s (115kB/s)(6028KiB/53879msec) clat (usec): min=133, max=697451, avg=19654.49, stdev=20362.93 lat (usec): min=134, max=697451, avg=19657.69, stdev=20363.28 clat percentiles (usec): | 1.00th=[ 351], 5.00th=[ 6652], 10.00th=[ 8848], 20.00th=[ 11207], | 30.00th=[ 13173], 40.00th=[ 15139], 50.00th=[ 17171], 60.00th=[ 19792], | 70.00th=[ 22414], 80.00th=[ 26346], 90.00th=[ 32900], 95.00th=[ 38536], | 99.00th=[ 54789], 99.50th=[ 63177], 99.90th=[ 84411], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 223, per=25.67%, avg=111.41, stdev=29.49, samples=107 iops : min= 1, max= 55, avg=27.36, stdev= 7.44, samples=107 write: IOPS=29, BW=116KiB/s (119kB/s)(6260KiB/53879msec); 0 zone resets clat (usec): min=662, max=84136, avg=15358.84, stdev=12774.72 lat (usec): min=663, max=84138, avg=15359.98, stdev=12774.70 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1795], 10.00th=[ 2474], 20.00th=[ 3621], | 30.00th=[ 5800], 40.00th=[ 9241], 50.00th=[12387], 60.00th=[15401], | 70.00th=[19530], 80.00th=[25560], 90.00th=[33817], 95.00th=[39584], | 99.00th=[54789], 99.50th=[60556], 99.90th=[70779], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 15, max= 215, per=25.39%, avg=115.51, stdev=33.56, samples=107 iops : min= 3, max= 53, avg=28.39, stdev= 8.41, samples=107 lat (usec) : 250=0.29%, 500=0.68%, 750=0.55%, 1000=0.39% lat (msec) : 2=3.16%, 4=8.20%, 10=15.85%, 20=36.49%, 50=32.85% lat (msec) : 100=1.50%, 750=0.03% cpu : usr=0.10%, sys=18.63%, ctx=8490, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182125: Fri Feb 27 03:14:10 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(6052KiB/54973msec) clat (usec): min=124, max=97425, avg=19587.07, stdev=10626.01 lat (usec): min=124, max=97426, avg=19587.94, stdev=10626.03 clat percentiles (usec): | 1.00th=[ 383], 5.00th=[ 7242], 10.00th=[ 9110], 20.00th=[11338], | 30.00th=[13304], 40.00th=[15401], 50.00th=[17695], 60.00th=[20317], | 70.00th=[22938], 80.00th=[26870], 90.00th=[32375], 95.00th=[38011], | 99.00th=[54264], 99.50th=[64226], 99.90th=[71828], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 7, max= 168, per=25.50%, avg=110.68, stdev=27.10, samples=108 iops : min= 1, max= 42, avg=27.19, stdev= 6.84, samples=108 write: IOPS=28, BW=113KiB/s (116kB/s)(6236KiB/54973msec); 0 zone resets clat (usec): min=685, max=748568, avg=16096.46, stdev=22454.07 lat (usec): min=686, max=748569, avg=16097.53, stdev=22454.13 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1844], 10.00th=[ 2573], 20.00th=[ 3589], | 30.00th=[ 6128], 40.00th=[ 10159], 50.00th=[ 13173], 60.00th=[ 16188], | 70.00th=[ 20317], 80.00th=[ 25297], 90.00th=[ 33424], 95.00th=[ 40109], | 99.00th=[ 51643], 99.50th=[ 57410], 99.90th=[100140], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 31, max= 191, per=25.05%, avg=114.00, stdev=31.47, samples=108 iops : min= 7, max= 47, avg=28.02, stdev= 7.98, samples=108 lat (usec) : 250=0.16%, 500=0.59%, 750=0.65%, 1000=0.46% lat (msec) : 2=2.64%, 4=8.66%, 10=13.61%, 20=37.63%, 50=34.05% lat (msec) : 100=1.50%, 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=18.44%, ctx=8733, 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=435KiB/s (445kB/s), 109KiB/s-112KiB/s (111kB/s-115kB/s), io=23.4MiB (24.6MB), run=53879-55208msec WRITE: bw=455KiB/s (466kB/s), 113KiB/s-117KiB/s (116kB/s-120kB/s), io=24.6MiB (25.7MB), run=53879-55208msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182120: Fri Feb 27 03:14:23 2026 read: IOPS=22, BW=88.0KiB/s (90.1kB/s)(5992KiB/68064msec) clat (msec): min=3, max=705, avg=18.71, stdev=22.29 lat (msec): min=3, max=705, avg=18.71, stdev=22.29 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 46], | 99.00th=[ 64], 99.50th=[ 73], 99.90th=[ 114], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 23, max= 255, per=25.12%, avg=88.16, stdev=48.91, samples=134 iops : min= 5, max= 63, avg=21.59, stdev=12.26, samples=134 write: IOPS=23, BW=92.5KiB/s (94.7kB/s)(6296KiB/68064msec); 0 zone resets clat (msec): min=6, max=147, avg=25.31, stdev=16.39 lat (msec): min=6, max=147, avg=25.31, stdev=16.39 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 87], 99.50th=[ 101], 99.90th=[ 134], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 7, max= 239, per=25.27%, avg=92.75, stdev=48.41, samples=134 iops : min= 1, max= 59, avg=22.74, stdev=12.15, samples=134 lat (msec) : 4=0.16%, 10=20.31%, 20=38.15%, 50=35.68%, 100=5.37% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.09%, sys=8.89%, ctx=5812, 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=182121: Fri Feb 27 03:14:23 2026 read: IOPS=21, BW=87.4KiB/s (89.5kB/s)(5940KiB/67941msec) clat (msec): min=3, max=735, avg=18.79, stdev=23.47 lat (msec): min=3, max=735, avg=18.79, stdev=23.47 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 40], 95.00th=[ 49], | 99.00th=[ 69], 99.50th=[ 80], 99.90th=[ 94], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 296, per=25.03%, avg=87.85, stdev=50.12, samples=134 iops : min= 1, max= 74, avg=21.51, stdev=12.58, samples=134 write: IOPS=23, BW=93.4KiB/s (95.7kB/s)(6348KiB/67941msec); 0 zone resets clat (msec): min=5, max=132, avg=25.10, stdev=15.77 lat (msec): min=5, max=132, avg=25.10, stdev=15.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 46], 95.00th=[ 56], | 99.00th=[ 84], 99.50th=[ 90], 99.90th=[ 120], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 23, max= 231, per=25.55%, avg=93.76, stdev=49.05, samples=134 iops : min= 5, max= 57, avg=22.99, stdev=12.31, samples=134 lat (msec) : 4=0.39%, 10=21.09%, 20=37.37%, 50=35.29%, 100=5.70% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.10%, sys=8.99%, ctx=5825, 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=182124: Fri Feb 27 03:14:23 2026 read: IOPS=22, BW=88.2KiB/s (90.3kB/s)(6028KiB/68372msec) clat (msec): min=3, max=131, avg=18.42, stdev=14.18 lat (msec): min=3, max=131, avg=18.42, stdev=14.18 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 39], 95.00th=[ 50], | 99.00th=[ 67], 99.50th=[ 77], 99.90th=[ 101], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 31, max= 263, per=25.38%, avg=89.07, stdev=49.47, samples=134 iops : min= 7, max= 65, avg=21.82, stdev=12.41, samples=134 write: IOPS=22, BW=91.6KiB/s (93.8kB/s)(6260KiB/68372msec); 0 zone resets clat (msec): min=4, max=722, avg=25.82, stdev=24.08 lat (msec): min=4, max=722, avg=25.82, stdev=24.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 85], 99.50th=[ 102], 99.90th=[ 118], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 23, max= 247, per=25.01%, avg=91.77, stdev=49.32, samples=135 iops : min= 5, max= 61, avg=22.50, stdev=12.37, samples=135 lat (msec) : 4=0.42%, 10=19.99%, 20=39.29%, 50=33.92%, 100=6.05% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.08%, sys=8.85%, ctx=5719, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182126: Fri Feb 27 03:14:23 2026 read: IOPS=22, BW=88.9KiB/s (91.1kB/s)(6052KiB/68063msec) clat (msec): min=2, max=113, avg=18.16, stdev=13.93 lat (msec): min=2, max=113, avg=18.16, stdev=13.93 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 38], 95.00th=[ 48], | 99.00th=[ 68], 99.50th=[ 74], 99.90th=[ 106], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 7, max= 271, per=25.39%, avg=89.10, stdev=50.52, samples=134 iops : min= 1, max= 67, avg=21.83, stdev=12.68, samples=134 write: IOPS=22, BW=91.6KiB/s (93.8kB/s)(6236KiB/68063msec); 0 zone resets clat (msec): min=4, max=729, avg=25.91, stdev=24.21 lat (msec): min=4, max=729, avg=25.91, stdev=24.21 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 48], 95.00th=[ 58], | 99.00th=[ 82], 99.50th=[ 105], 99.90th=[ 146], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 31, max= 263, per=25.01%, avg=91.79, stdev=49.80, samples=134 iops : min= 7, max= 65, avg=22.50, stdev=12.49, samples=134 lat (msec) : 4=0.36%, 10=20.61%, 20=37.86%, 50=35.12%, 100=5.73% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.07%, sys=8.88%, ctx=5839, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=351KiB/s (360kB/s), 87.4KiB/s-88.9KiB/s (89.5kB/s-91.1kB/s), io=23.4MiB (24.6MB), run=67941-68372msec WRITE: bw=368KiB/s (377kB/s), 91.6KiB/s-93.4KiB/s (93.8kB/s-95.7kB/s), io=24.6MiB (25.7MB), run=67941-68372msec 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=182157: Fri Feb 27 03:14:46 2026 read: IOPS=20, BW=320KiB/s (328kB/s)(5920KiB/18472msec) clat (usec): min=178, max=71175, avg=24647.61, stdev=13755.77 lat (usec): min=178, max=71176, avg=24649.10, stdev=13756.16 clat percentiles (usec): | 1.00th=[ 241], 5.00th=[ 791], 10.00th=[ 9503], 20.00th=[14484], | 30.00th=[17957], 40.00th=[20841], 50.00th=[23200], 60.00th=[25822], | 70.00th=[29230], 80.00th=[34341], 90.00th=[42206], 95.00th=[46924], | 99.00th=[68682], 99.50th=[70779], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 159, max= 510, per=24.76%, avg=317.89, stdev=90.77, samples=36 iops : min= 9, max= 31, avg=19.22, stdev= 5.67, samples=36 write: IOPS=21, BW=345KiB/s (353kB/s)(6368KiB/18472msec); 0 zone resets clat (usec): min=1395, max=107332, avg=23221.54, stdev=17859.86 lat (usec): min=1396, max=107334, avg=23223.49, stdev=17859.92 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 3720], 10.00th=[ 5014], 20.00th=[ 8586], | 30.00th=[ 11863], 40.00th=[ 15139], 50.00th=[ 18220], 60.00th=[ 22152], | 70.00th=[ 28705], 80.00th=[ 35914], 90.00th=[ 45876], 95.00th=[ 57410], | 99.00th=[ 90702], 99.50th=[ 92799], 99.90th=[107480], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 159, max= 640, per=25.61%, avg=345.97, stdev=107.38, samples=36 iops : min= 9, max= 40, avg=20.97, stdev= 6.70, samples=36 lat (usec) : 250=0.65%, 500=0.52%, 750=0.91%, 1000=1.04% lat (msec) : 2=1.30%, 4=3.12%, 10=10.16%, 20=28.39%, 50=47.14% lat (msec) : 100=6.64%, 250=0.13% cpu : usr=0.12%, sys=21.28%, ctx=2729, 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=182158: Fri Feb 27 03:14:46 2026 read: IOPS=19, BW=308KiB/s (316kB/s)(5744KiB/18640msec) clat (usec): min=441, max=71913, avg=26889.24, stdev=13340.53 lat (usec): min=441, max=71914, avg=26890.57, stdev=13341.24 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 8160], 10.00th=[12387], 20.00th=[15664], | 30.00th=[19006], 40.00th=[21103], 50.00th=[24773], 60.00th=[29230], | 70.00th=[32900], 80.00th=[36963], 90.00th=[45876], 95.00th=[52167], | 99.00th=[65799], 99.50th=[70779], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 127, max= 509, per=23.70%, avg=304.36, stdev=87.91, samples=36 iops : min= 7, max= 31, avg=18.36, stdev= 5.54, samples=36 write: IOPS=21, BW=351KiB/s (359kB/s)(6544KiB/18640msec); 0 zone resets clat (usec): min=1460, max=103126, avg=21893.12, stdev=17024.77 lat (usec): min=1462, max=103128, avg=21894.87, stdev=17024.83 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 46], 95.00th=[ 57], | 99.00th=[ 70], 99.50th=[ 83], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 191, max= 542, per=25.26%, avg=341.22, stdev=87.36, samples=36 iops : min= 11, max= 33, avg=20.67, stdev= 5.47, samples=36 lat (usec) : 500=0.65%, 750=0.39%, 1000=0.65% lat (msec) : 2=0.52%, 4=2.73%, 10=13.67%, 20=27.21%, 50=46.74% lat (msec) : 100=7.29%, 250=0.13% cpu : usr=0.14%, sys=21.45%, ctx=2720, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182159: Fri Feb 27 03:14:46 2026 read: IOPS=21, BW=347KiB/s (356kB/s)(6256KiB/18005msec) clat (usec): min=376, max=80242, avg=25102.75, stdev=13596.42 lat (usec): min=376, max=80242, avg=25103.84, stdev=13596.44 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 766], 10.00th=[10421], 20.00th=[13829], | 30.00th=[17695], 40.00th=[20841], 50.00th=[24249], 60.00th=[27657], | 70.00th=[30802], 80.00th=[34866], 90.00th=[41681], 95.00th=[48497], | 99.00th=[69731], 99.50th=[77071], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 160, max= 542, per=27.21%, avg=349.31, stdev=93.61, samples=35 iops : min= 10, max= 33, avg=21.17, stdev= 5.71, samples=35 write: IOPS=20, BW=335KiB/s (343kB/s)(6032KiB/18005msec); 0 zone resets clat (usec): min=1046, max=88371, avg=21364.52, stdev=16206.87 lat (usec): min=1048, max=88374, avg=21366.38, stdev=16206.96 clat percentiles (usec): | 1.00th=[ 2024], 5.00th=[ 3654], 10.00th=[ 4883], 20.00th=[ 7242], | 30.00th=[10683], 40.00th=[14222], 50.00th=[17433], 60.00th=[21365], | 70.00th=[25822], 80.00th=[33817], 90.00th=[43779], 95.00th=[55313], | 99.00th=[72877], 99.50th=[81265], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 159, max= 541, per=24.55%, avg=331.69, stdev=88.80, samples=35 iops : min= 9, max= 33, avg=20.06, stdev= 5.56, samples=35 lat (usec) : 500=0.65%, 750=1.82%, 1000=0.39% lat (msec) : 2=0.65%, 4=2.86%, 10=12.50%, 20=28.52%, 50=46.74% lat (msec) : 100=5.86% cpu : usr=0.11%, sys=21.70%, ctx=2721, 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=182160: Fri Feb 27 03:14:46 2026 read: IOPS=21, BW=341KiB/s (350kB/s)(6032KiB/17669msec) clat (usec): min=193, max=86710, avg=24136.44, stdev=13200.68 lat (usec): min=194, max=86710, avg=24137.38, stdev=13200.71 clat percentiles (usec): | 1.00th=[ 251], 5.00th=[ 1004], 10.00th=[ 9765], 20.00th=[14615], | 30.00th=[17695], 40.00th=[20055], 50.00th=[21890], 60.00th=[25297], | 70.00th=[28705], 80.00th=[34341], 90.00th=[41157], 95.00th=[49021], | 99.00th=[63177], 99.50th=[68682], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 128, max= 541, per=26.60%, avg=341.53, stdev=81.53, samples=34 iops : min= 8, max= 33, avg=20.65, stdev= 5.06, samples=34 write: IOPS=22, BW=354KiB/s (363kB/s)(6256KiB/17669msec); 0 zone resets clat (usec): min=1377, max=100327, avg=21744.17, stdev=16792.04 lat (usec): min=1378, max=100328, avg=21746.72, stdev=16791.82 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 3130], 10.00th=[ 4817], 20.00th=[ 7635], | 30.00th=[ 10683], 40.00th=[ 13829], 50.00th=[ 17957], 60.00th=[ 21627], | 70.00th=[ 27657], 80.00th=[ 33817], 90.00th=[ 44303], 95.00th=[ 55837], | 99.00th=[ 88605], 99.50th=[ 96994], 99.90th=[100140], 99.95th=[100140], | 99.99th=[100140] bw ( KiB/s): min= 191, max= 574, per=26.37%, avg=356.21, stdev=99.17, samples=34 iops : min= 11, max= 35, avg=21.59, stdev= 6.22, samples=34 lat (usec) : 250=0.39%, 500=0.52%, 750=1.04%, 1000=0.39% lat (msec) : 2=2.21%, 4=2.73%, 10=11.72%, 20=29.17%, 50=46.22% lat (msec) : 100=5.47%, 250=0.13% cpu : usr=0.08%, sys=22.16%, ctx=2633, 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=1285KiB/s (1316kB/s), 308KiB/s-347KiB/s (316kB/s-356kB/s), io=23.4MiB (24.5MB), run=17669-18640msec WRITE: bw=1352KiB/s (1384kB/s), 335KiB/s-354KiB/s (343kB/s-363kB/s), io=24.6MiB (25.8MB), run=17669-18640msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182152: Fri Feb 27 03:14:50 2026 read: IOPS=16, BW=271KiB/s (278kB/s)(5920KiB/21815msec) clat (msec): min=4, max=116, avg=23.65, stdev=17.85 lat (msec): min=4, max=116, avg=23.66, stdev=17.85 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 34], 90.00th=[ 50], 95.00th=[ 62], | 99.00th=[ 90], 99.50th=[ 95], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 64, max= 672, per=24.54%, avg=267.72, stdev=153.24, samples=43 iops : min= 4, max= 42, avg=16.23, stdev= 9.67, samples=43 write: IOPS=18, BW=292KiB/s (299kB/s)(6368KiB/21815msec); 0 zone resets clat (msec): min=7, max=112, avg=32.75, stdev=20.54 lat (msec): min=7, max=112, avg=32.76, stdev=20.54 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 65], 95.00th=[ 75], | 99.00th=[ 95], 99.50th=[ 102], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 128, max= 830, per=25.22%, avg=289.51, stdev=141.44, samples=43 iops : min= 8, max= 51, avg=17.58, stdev= 8.90, samples=43 lat (msec) : 10=10.55%, 20=35.68%, 50=38.80%, 100=14.58%, 250=0.39% cpu : usr=0.09%, sys=9.66%, ctx=1669, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182153: Fri Feb 27 03:14:50 2026 read: IOPS=16, BW=262KiB/s (268kB/s)(5744KiB/21940msec) clat (msec): min=4, max=129, avg=24.54, stdev=19.21 lat (msec): min=4, max=129, avg=24.54, stdev=19.21 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 50], 95.00th=[ 63], | 99.00th=[ 85], 99.50th=[ 118], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 95, max= 704, per=23.74%, avg=258.95, stdev=131.89, samples=43 iops : min= 5, max= 44, avg=15.67, stdev= 8.43, samples=43 write: IOPS=18, BW=298KiB/s (305kB/s)(6544KiB/21940msec); 0 zone resets clat (msec): min=5, max=141, avg=31.94, stdev=20.08 lat (msec): min=5, max=141, avg=31.94, stdev=20.08 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 46], 90.00th=[ 61], 95.00th=[ 74], | 99.00th=[ 90], 99.50th=[ 100], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 96, max= 990, per=25.20%, avg=289.26, stdev=159.46, samples=43 iops : min= 6, max= 61, avg=17.58, stdev= 9.99, samples=43 lat (msec) : 10=12.11%, 20=31.90%, 50=42.84%, 100=12.50%, 250=0.65% cpu : usr=0.06%, sys=9.75%, ctx=1726, 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=182154: Fri Feb 27 03:14:50 2026 read: IOPS=17, BW=287KiB/s (294kB/s)(6256KiB/21802msec) clat (msec): min=4, max=129, avg=25.55, stdev=19.07 lat (msec): min=4, max=129, avg=25.55, stdev=19.07 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 50], 95.00th=[ 64], | 99.00th=[ 103], 99.50th=[ 113], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 95, max= 896, per=26.37%, avg=287.70, stdev=166.08, samples=43 iops : min= 5, max= 56, avg=17.49, stdev=10.45, samples=43 write: IOPS=17, BW=277KiB/s (283kB/s)(6032KiB/21802msec); 0 zone resets clat (msec): min=6, max=125, avg=31.10, stdev=19.59 lat (msec): min=6, max=125, avg=31.10, stdev=19.59 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 46], 90.00th=[ 59], 95.00th=[ 69], | 99.00th=[ 100], 99.50th=[ 109], 99.90th=[ 126], 99.95th=[ 126], | 99.99th=[ 126] bw ( KiB/s): min= 125, max= 704, per=23.76%, avg=272.72, stdev=140.58, samples=43 iops : min= 7, max= 44, avg=16.53, stdev= 8.88, samples=43 lat (msec) : 10=10.94%, 20=32.68%, 50=43.49%, 100=11.98%, 250=0.91% cpu : usr=0.12%, sys=9.90%, ctx=1759, 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=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=182155: Fri Feb 27 03:14:50 2026 read: IOPS=17, BW=280KiB/s (286kB/s)(6032KiB/21563msec) clat (msec): min=4, max=102, avg=24.22, stdev=17.56 lat (msec): min=4, max=102, avg=24.22, stdev=17.56 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 49], 95.00th=[ 66], | 99.00th=[ 92], 99.50th=[ 100], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 126, max= 926, per=25.12%, avg=274.05, stdev=145.67, samples=42 iops : min= 7, max= 57, avg=16.60, stdev= 9.19, samples=42 write: IOPS=18, BW=290KiB/s (297kB/s)(6256KiB/21563msec); 0 zone resets clat (msec): min=6, max=123, avg=31.59, stdev=18.75 lat (msec): min=6, max=123, avg=31.60, stdev=18.76 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 38], 80.00th=[ 46], 90.00th=[ 60], 95.00th=[ 69], | 99.00th=[ 92], 99.50th=[ 97], 99.90th=[ 125], 99.95th=[ 125], | 99.99th=[ 125] bw ( KiB/s): min= 96, max= 734, per=25.09%, avg=287.98, stdev=137.67, samples=42 iops : min= 6, max= 45, avg=17.48, stdev= 8.61, samples=42 lat (msec) : 10=9.64%, 20=34.11%, 50=43.88%, 100=12.11%, 250=0.26% cpu : usr=0.07%, sys=9.88%, ctx=1684, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1092KiB/s (1118kB/s), 262KiB/s-287KiB/s (268kB/s-294kB/s), io=23.4MiB (24.5MB), run=21563-21940msec WRITE: bw=1149KiB/s (1176kB/s), 277KiB/s-298KiB/s (283kB/s-305kB/s), io=24.6MiB (25.8MB), run=21563-21940msec 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=182168: Fri Feb 27 03:15:00 2026 read: IOPS=3, BW=3809KiB/s (3900kB/s)(7168KiB/1882msec) clat (msec): min=3, max=184, avg=120.71, stdev=63.42 lat (msec): min=3, max=184, avg=120.72, stdev=63.42 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 85], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 132], 60.00th=[ 157], | 70.00th=[ 157], 80.00th=[ 180], 90.00th=[ 186], 95.00th=[ 186], | 99.00th=[ 186], 99.50th=[ 186], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 1921, max= 4237, per=60.67%, avg=3412.33, stdev=1293.95, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2721KiB/s (2786kB/s)(5120KiB/1882msec); 0 zone resets clat (msec): min=69, max=300, avg=195.82, stdev=100.20 lat (msec): min=69, max=301, avg=196.04, stdev=100.42 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 70], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 3842, max= 4079, per=50.30%, avg=3960.50, stdev=167.58, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 lat (msec) : 4=8.33%, 100=16.67%, 250=58.33%, 500=16.67% cpu : usr=0.00%, sys=25.41%, ctx=116, 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=182169: Fri Feb 27 03:15:00 2026 read: IOPS=0, BW=611KiB/s (625kB/s)(2048KiB/3354msec) clat (usec): min=1705, max=202100, avg=101903.25, stdev=141700.67 lat (usec): min=1706, max=202102, avg=101904.63, stdev=141700.97 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 1713], 10.00th=[ 1713], 20.00th=[ 1713], | 30.00th=[ 1713], 40.00th=[ 1713], 50.00th=[ 1713], 60.00th=[202376], | 70.00th=[202376], 80.00th=[202376], 90.00th=[202376], 95.00th=[202376], | 99.00th=[202376], 99.50th=[202376], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 1412, max= 1921, per=29.63%, avg=1666.50, stdev=359.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=3053KiB/s (3126kB/s)(10.0MiB/3354msec); 0 zone resets clat (msec): min=94, max=824, avg=309.80, stdev=213.97 lat (msec): min=94, max=824, avg=309.90, stdev=213.95 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 112], | 30.00th=[ 157], 40.00th=[ 205], 50.00th=[ 213], 60.00th=[ 355], | 70.00th=[ 368], 80.00th=[ 376], 90.00th=[ 401], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1412, max= 5807, per=43.66%, avg=3437.60, stdev=1748.07, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.48, samples=5 lat (msec) : 2=8.33%, 100=8.33%, 250=41.67%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=20.76%, ctx=91, 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=182170: Fri Feb 27 03:15:00 2026 read: IOPS=1, BW=1687KiB/s (1728kB/s)(6144KiB/3641msec) clat (msec): min=3, max=515, avg=244.45, stdev=205.52 lat (msec): min=3, max=515, avg=244.45, stdev=205.52 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 57], | 30.00th=[ 57], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 264], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 1921, max= 3871, per=43.91%, avg=2469.75, stdev=935.96, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1687KiB/s (1728kB/s)(6144KiB/3641msec); 0 zone resets clat (msec): min=100, max=761, avg=354.15, stdev=253.86 lat (msec): min=100, max=761, avg=354.23, stdev=253.85 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 405], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1935, max= 4096, per=34.60%, avg=2724.50, stdev=997.49, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 4=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=14.75%, ctx=249, 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=182171: Fri Feb 27 03:15:00 2026 read: IOPS=1, BW=1698KiB/s (1739kB/s)(5120KiB/3015msec) clat (usec): min=1582, max=451461, avg=241577.80, stdev=176557.87 lat (usec): min=1583, max=451462, avg=241581.00, stdev=176556.40 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1582], 10.00th=[ 1582], 20.00th=[ 1582], | 30.00th=[149947], 40.00th=[149947], 50.00th=[244319], 60.00th=[244319], | 70.00th=[362808], 80.00th=[362808], 90.00th=[450888], 95.00th=[450888], | 99.00th=[450888], 99.50th=[450888], 99.90th=[450888], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 3842, max= 4031, per=69.99%, avg=3936.50, stdev=133.64, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2377KiB/s (2435kB/s)(7168KiB/3015msec); 0 zone resets clat (msec): min=151, max=422, avg=255.93, stdev=96.58 lat (msec): min=151, max=422, avg=256.01, stdev=96.56 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 165], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 245], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 334], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 2015, max= 4079, per=40.66%, avg=3201.25, stdev=958.59, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (msec) : 2=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=19.64%, ctx=228, 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=5625KiB/s (5760kB/s), 611KiB/s-3809KiB/s (625kB/s-3900kB/s), io=20.0MiB (20.0MB), run=1882-3641msec WRITE: bw=7875KiB/s (8064kB/s), 1687KiB/s-3053KiB/s (1728kB/s-3126kB/s), io=28.0MiB (29.4MB), run=1882-3641msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182173: Fri Feb 27 03:15:01 2026 read: IOPS=1, BW=1919KiB/s (1965kB/s)(7168KiB/3735msec) clat (msec): min=93, max=1200, avg=320.61, stdev=399.41 lat (msec): min=93, max=1200, avg=320.61, stdev=399.41 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 120], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 140], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 380], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 2043, max= 4015, per=54.47%, avg=2976.67, stdev=990.16, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1371KiB/s (1404kB/s)(5120KiB/3735msec); 0 zone resets clat (msec): min=100, max=407, avg=274.72, stdev=139.87 lat (msec): min=100, max=407, avg=274.82, stdev=139.86 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 2043, max= 4015, per=39.59%, avg=3029.00, stdev=1394.41, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=7.42%, ctx=81, 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=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=182174: Fri Feb 27 03:15:01 2026 read: IOPS=0, BW=547KiB/s (560kB/s)(2048KiB/3742msec) clat (msec): min=177, max=219, avg=198.41, stdev=29.63 lat (msec): min=177, max=219, avg=198.41, stdev=29.63 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 220], 95.00th=[ 220], | 99.00th=[ 220], 99.50th=[ 220], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 1961, max= 2011, per=36.34%, avg=1986.00, stdev=35.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2737KiB/s (2802kB/s)(10.0MiB/3742msec); 0 zone resets clat (msec): min=149, max=519, avg=307.02, stdev=108.51 lat (msec): min=149, max=520, avg=307.12, stdev=108.51 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 220], | 30.00th=[ 228], 40.00th=[ 271], 50.00th=[ 284], 60.00th=[ 288], | 70.00th=[ 309], 80.00th=[ 376], 90.00th=[ 430], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2011, max= 4000, per=35.07%, avg=2683.00, stdev=1005.20, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=41.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=6.55%, ctx=76, 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=182175: Fri Feb 27 03:15:01 2026 read: IOPS=1, BW=1654KiB/s (1694kB/s)(6144KiB/3715msec) clat (msec): min=66, max=480, avg=199.18, stdev=146.09 lat (msec): min=66, max=480, avg=199.18, stdev=146.09 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 174], | 70.00th=[ 201], 80.00th=[ 201], 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= 2000, max= 4096, per=61.34%, avg=3352.33, stdev=1173.10, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1654KiB/s (1694kB/s)(6144KiB/3715msec); 0 zone resets clat (msec): min=100, max=725, avg=394.17, stdev=269.18 lat (msec): min=100, max=725, avg=394.26, stdev=269.20 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 460], | 70.00th=[ 684], 80.00th=[ 684], 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= 1980, max= 2048, per=26.31%, avg=2012.60, stdev=28.00, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=5.30%, ctx=57, 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=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=182176: Fri Feb 27 03:15:01 2026 read: IOPS=1, BW=1366KiB/s (1399kB/s)(5120KiB/3747msec) clat (msec): min=80, max=966, avg=321.08, stdev=373.67 lat (msec): min=80, max=966, avg=321.08, stdev=373.67 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1988, max= 4015, per=48.86%, avg=2670.00, stdev=1164.84, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1913KiB/s (1959kB/s)(7168KiB/3747msec); 0 zone resets clat (msec): min=104, max=559, avg=296.02, stdev=195.05 lat (msec): min=105, max=560, avg=296.21, stdev=195.09 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 109], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 211], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 542], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1391, max= 3976, per=32.28%, avg=2470.00, stdev=1344.36, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=4.89%, ctx=74, 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=5466KiB/s (5597kB/s), 547KiB/s-1919KiB/s (560kB/s-1965kB/s), io=20.0MiB (20.0MB), run=3715-3747msec WRITE: bw=7652KiB/s (7836kB/s), 1371KiB/s-2737KiB/s (1404kB/s-2802kB/s), io=28.0MiB (29.4MB), run=3715-3747msec 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=182186: Fri Feb 27 03:15:13 2026 read: IOPS=0, BW=3248KiB/s (3326kB/s)(12.0MiB/3783msec) clat (msec): min=1090, max=1276, avg=1203.47, stdev=99.25 lat (msec): min=1090, max=1276, avg=1203.47, stdev=99.25 clat percentiles (msec): | 1.00th=[ 1083], 5.00th=[ 1083], 10.00th=[ 1083], 20.00th=[ 1083], | 30.00th=[ 1083], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7968, max= 8175, per=100.00%, avg=8071.50, stdev=146.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=7.46%, ctx=141, 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=182187: Fri Feb 27 03:15:13 2026 read: IOPS=0, BW=1206KiB/s (1235kB/s)(4096KiB/3395msec) clat (nsec): min=1221.1M, max=1221.1M, avg=1221060591.00, stdev= 0.00 lat (nsec): min=1221.1M, max=1221.1M, avg=1221063604.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1217], 5.00th=[ 1217], 10.00th=[ 1217], 20.00th=[ 1217], | 30.00th=[ 1217], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2413KiB/s (2471kB/s)(8192KiB/3395msec); 0 zone resets clat (msec): min=652, max=1252, avg=952.43, stdev=423.70 lat (msec): min=653, max=1252, avg=952.79, stdev=423.76 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.33%, ctx=68, 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=182188: Fri Feb 27 03:15:13 2026 write: IOPS=0, BW=2889KiB/s (2958kB/s)(12.0MiB/4254msec); 0 zone resets clat (msec): min=357, max=2361, avg=1399.44, stdev=1004.12 lat (msec): min=358, max=2361, avg=1399.78, stdev=1004.09 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7393, max= 7861, per=99.03%, avg=7627.00, stdev=330.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=2.61%, ctx=67, 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=182189: Fri Feb 27 03:15:13 2026 write: IOPS=0, BW=3122KiB/s (3197kB/s)(12.0MiB/3936msec); 0 zone resets clat (msec): min=878, max=1823, avg=1256.59, stdev=499.69 lat (msec): min=878, max=1827, avg=1258.21, stdev=501.70 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7846, max= 7892, per=100.00%, avg=7869.00, stdev=32.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.08%, sys=3.84%, ctx=67, 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=4331KiB/s (4435kB/s), 1206KiB/s-3248KiB/s (1235kB/s-3326kB/s), io=16.0MiB (16.8MB), run=3395-3783msec WRITE: bw=7703KiB/s (7888kB/s), 2413KiB/s-3122KiB/s (2471kB/s-3197kB/s), io=32.0MiB (33.6MB), run=3395-4254msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182182: Fri Feb 27 03:15:14 2026 read: IOPS=1, BW=4939KiB/s (5057kB/s)(12.0MiB/2488msec) clat (msec): min=228, max=1788, avg=802.94, stdev=857.60 lat (msec): min=228, max=1788, avg=802.94, stdev=857.60 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 5927, max= 8047, per=100.00%, avg=6987.00, stdev=1499.07, 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=0.00%, sys=3.90%, ctx=72, 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=182183: Fri Feb 27 03:15:14 2026 read: IOPS=0, BW=788KiB/s (807kB/s)(4096KiB/5199msec) clat (nsec): min=1537.3M, max=1537.3M, avg=1537279264.00, stdev= 0.00 lat (nsec): min=1537.3M, max=1537.3M, avg=1537281597.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1536], 5.00th=[ 1536], 10.00th=[ 1536], 20.00th=[ 1536], | 30.00th=[ 1536], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7713, max= 7713, per=100.00%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1576KiB/s (1614kB/s)(8192KiB/5199msec); 0 zone resets clat (msec): min=485, max=3017, avg=1751.38, stdev=1789.88 lat (msec): min=486, max=3017, avg=1751.67, stdev=1789.71 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=[ 3004], | 70.00th=[ 3004], 80.00th=[ 3004], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 7861, max= 7861, per=100.00%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.98%, ctx=44, 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=182184: Fri Feb 27 03:15:14 2026 write: IOPS=0, BW=2360KiB/s (2417kB/s)(12.0MiB/5207msec); 0 zone resets clat (msec): min=1071, max=2820, avg=1698.27, stdev=973.74 lat (msec): min=1071, max=2820, avg=1698.93, stdev=973.98 clat percentiles (msec): | 1.00th=[ 1070], 5.00th=[ 1070], 10.00th=[ 1070], 20.00th=[ 1070], | 30.00th=[ 1070], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.06%, sys=2.40%, ctx=60, 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=182185: Fri Feb 27 03:15:14 2026 write: IOPS=0, BW=3279KiB/s (3358kB/s)(12.0MiB/3747msec); 0 zone resets clat (msec): min=379, max=2572, avg=1231.17, stdev=1175.65 lat (msec): min=379, max=2572, avg=1231.50, stdev=1175.53 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 2567], 80.00th=[ 2567], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 5603, max= 8047, per=100.00%, avg=6825.00, stdev=1728.17, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.24%, ctx=33, 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=3151KiB/s (3227kB/s), 788KiB/s-4939KiB/s (807kB/s-5057kB/s), io=16.0MiB (16.8MB), run=2488-5199msec WRITE: bw=6293KiB/s (6444kB/s), 1576KiB/s-3279KiB/s (1614kB/s-3358kB/s), io=32.0MiB (33.6MB), run=3747-5207msec