== sanity test 398b: DIO and buffer IO race ============== 23:21:58 (1789442518) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.30407 s, 8.0 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145176: Mon Sep 14 23:24:34 2026 read: IOPS=11, BW=44.4KiB/s (45.4kB/s)(5992KiB/135061msec) clat (usec): min=45, max=827012, avg=45276.19, stdev=38329.49 lat (usec): min=45, max=827013, avg=45278.79, stdev=38329.82 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 69], 10.00th=[ 15270], 20.00th=[ 22152], | 30.00th=[ 27132], 40.00th=[ 32375], 50.00th=[ 36963], 60.00th=[ 44303], | 70.00th=[ 54264], 80.00th=[ 64750], 90.00th=[ 82314], 95.00th=[ 96994], | 99.00th=[179307], 99.50th=[202376], 99.90th=[371196], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 108, per=25.15%, avg=44.02, stdev=18.52, samples=265 iops : min= 1, max= 27, avg=10.36, stdev= 4.67, samples=265 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6296KiB/135061msec); 0 zone resets clat (usec): min=990, max=348659, avg=42407.49, stdev=41485.25 lat (usec): min=990, max=348660, avg=42416.35, stdev=41488.11 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1762], 20.00th=[ 4686], | 30.00th=[ 9372], 40.00th=[ 23200], 50.00th=[ 33817], 60.00th=[ 44303], | 70.00th=[ 57934], 80.00th=[ 72877], 90.00th=[ 96994], 95.00th=[117965], | 99.00th=[166724], 99.50th=[187696], 99.90th=[312476], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 119, per=25.34%, avg=46.38, stdev=20.06, samples=264 iops : min= 1, max= 29, avg=10.96, stdev= 5.05, samples=264 lat (usec) : 50=0.33%, 100=2.67%, 250=0.16%, 500=0.03%, 1000=0.10% lat (msec) : 2=5.89%, 4=3.42%, 10=6.64%, 20=7.91%, 50=38.48% lat (msec) : 100=27.70%, 250=6.41%, 500=0.23%, 1000=0.03% cpu : usr=0.07%, sys=4.48%, ctx=6664, 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=145177: Mon Sep 14 23:24:34 2026 read: IOPS=10, BW=43.6KiB/s (44.6kB/s)(5940KiB/136280msec) clat (usec): min=26, max=841910, avg=44231.08, stdev=37440.85 lat (usec): min=26, max=841911, avg=44232.66, stdev=37440.84 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 75], 10.00th=[ 14877], 20.00th=[ 21365], | 30.00th=[ 26870], 40.00th=[ 31589], 50.00th=[ 36963], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[156238], 99.50th=[200279], 99.90th=[283116], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 7, max= 119, per=24.76%, avg=43.32, stdev=18.14, samples=267 iops : min= 1, max= 29, avg=10.19, stdev= 4.58, samples=267 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6348KiB/136280msec); 0 zone resets clat (usec): min=912, max=368754, avg=44160.04, stdev=44090.96 lat (usec): min=912, max=368756, avg=44164.15, stdev=44092.49 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1631], 20.00th=[ 4555], | 30.00th=[ 11338], 40.00th=[ 23462], 50.00th=[ 34866], 60.00th=[ 44827], | 70.00th=[ 57410], 80.00th=[ 72877], 90.00th=[102237], 95.00th=[127402], | 99.00th=[196084], 99.50th=[212861], 99.90th=[308282], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 136, per=25.53%, avg=46.72, stdev=20.28, samples=265 iops : min= 1, max= 34, avg=11.05, stdev= 5.13, samples=265 lat (usec) : 50=0.42%, 100=2.54%, 250=0.33%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=5.63%, 4=3.84%, 10=5.50%, 20=8.98%, 50=38.09% lat (msec) : 100=26.43%, 250=7.55%, 500=0.26%, 1000=0.03% cpu : usr=0.09%, sys=4.56%, ctx=6689, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145178: Mon Sep 14 23:24:34 2026 read: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6028KiB/136966msec) clat (usec): min=33, max=815974, avg=44956.91, stdev=39324.94 lat (usec): min=33, max=815975, avg=44960.15, stdev=39325.00 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 12780], 20.00th=[ 21627], | 30.00th=[ 27132], 40.00th=[ 32375], 50.00th=[ 38536], 60.00th=[ 45351], | 70.00th=[ 53216], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[160433], 99.50th=[193987], 99.90th=[566232], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 7, max= 112, per=24.88%, avg=43.54, stdev=18.37, samples=269 iops : min= 1, max= 28, avg=10.24, stdev= 4.65, samples=269 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6260KiB/136966msec); 0 zone resets clat (usec): min=997, max=327546, avg=43911.97, stdev=42491.25 lat (usec): min=998, max=327547, avg=43919.29, stdev=42493.05 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1778], 20.00th=[ 4817], | 30.00th=[ 10683], 40.00th=[ 22676], 50.00th=[ 34341], 60.00th=[ 44827], | 70.00th=[ 58983], 80.00th=[ 76022], 90.00th=[100140], 95.00th=[124257], | 99.00th=[181404], 99.50th=[212861], 99.90th=[278922], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 96, per=24.73%, avg=45.25, stdev=18.50, samples=268 iops : min= 1, max= 24, avg=10.68, stdev= 4.67, samples=268 lat (usec) : 50=0.39%, 100=3.06%, 250=0.26%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.60%, 4=3.52%, 10=6.05%, 20=8.95%, 50=36.62% lat (msec) : 100=27.86%, 250=7.36%, 500=0.10%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=4.61%, ctx=6781, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145179: Mon Sep 14 23:24:34 2026 read: IOPS=11, BW=44.9KiB/s (45.0kB/s)(6052KiB/134770msec) clat (usec): min=33, max=251125, avg=42964.63, stdev=29814.01 lat (usec): min=33, max=251127, avg=42967.81, stdev=29818.54 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 68], 10.00th=[ 14091], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 64226], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[139461], 99.50th=[158335], 99.90th=[223347], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 7, max= 127, per=25.66%, avg=44.91, stdev=18.53, samples=263 iops : min= 1, max= 31, avg=10.58, stdev= 4.70, samples=263 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6236KiB/134770msec); 0 zone resets clat (usec): min=959, max=783572, avg=44422.86, stdev=49169.87 lat (usec): min=959, max=783574, avg=44426.17, stdev=49170.95 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1696], 20.00th=[ 4178], | 30.00th=[ 10945], 40.00th=[ 23200], 50.00th=[ 33817], 60.00th=[ 44827], | 70.00th=[ 57410], 80.00th=[ 73925], 90.00th=[101188], 95.00th=[122160], | 99.00th=[210764], 99.50th=[250610], 99.90th=[574620], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 88, per=24.99%, avg=45.74, stdev=17.80, samples=266 iops : min= 1, max= 22, avg=10.79, stdev= 4.47, samples=266 lat (usec) : 50=0.68%, 100=2.51%, 250=0.42%, 500=0.07%, 1000=0.13% lat (msec) : 2=6.05%, 4=3.84%, 10=5.14%, 20=9.02%, 50=38.22% lat (msec) : 100=26.37%, 250=7.26%, 500=0.23%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.64%, ctx=6539, 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=175KiB/s (180kB/s), 43.6KiB/s-44.9KiB/s (44.6kB/s-45.0kB/s), io=23.4MiB (24.6MB), run=134770-136966msec WRITE: bw=184KiB/s (188kB/s), 45.7KiB/s-46.6KiB/s (46.8kB/s-47.7kB/s), io=24.6MiB (25.7MB), run=134770-136966msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145181: Mon Sep 14 23:27:23 2026 read: IOPS=4, BW=19.8KiB/s (20.3kB/s)(5992KiB/302343msec) clat (msec): min=6, max=860, avg=43.93, stdev=45.10 lat (msec): min=6, max=860, avg=43.93, stdev=45.10 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 56], 90.00th=[ 81], 95.00th=[ 107], | 99.00th=[ 209], 99.50th=[ 247], 99.90th=[ 667], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 80, per=28.88%, avg=22.52, stdev=14.56, samples=512 iops : min= 1, max= 20, avg= 4.98, stdev= 3.69, samples=512 write: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6296KiB/302343msec); 0 zone resets clat (msec): min=39, max=783, avg=150.17, stdev=68.52 lat (msec): min=39, max=783, avg=150.17, stdev=68.52 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 95], | 30.00th=[ 110], 40.00th=[ 122], 50.00th=[ 136], 60.00th=[ 150], | 70.00th=[ 169], 80.00th=[ 194], 90.00th=[ 245], 95.00th=[ 284], | 99.00th=[ 363], 99.50th=[ 405], 99.90th=[ 575], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 62, per=24.84%, avg=20.37, stdev= 8.65, samples=592 iops : min= 1, max= 15, avg= 4.44, stdev= 2.21, samples=592 lat (msec) : 10=1.07%, 20=8.53%, 50=26.92%, 100=21.19%, 250=37.47% lat (msec) : 500=4.65%, 750=0.10%, 1000=0.07% cpu : usr=0.03%, sys=1.16%, ctx=5576, 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=145182: Mon Sep 14 23:27:23 2026 read: IOPS=4, BW=19.5KiB/s (19.0kB/s)(5940KiB/304801msec) clat (msec): min=6, max=1119, avg=42.82, stdev=43.86 lat (msec): min=6, max=1119, avg=42.83, stdev=43.86 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 77], 95.00th=[ 109], | 99.00th=[ 178], 99.50th=[ 234], 99.90th=[ 368], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 79, per=28.85%, avg=22.50, stdev=14.35, samples=507 iops : min= 1, max= 19, avg= 4.97, stdev= 3.63, samples=507 write: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6348KiB/304801msec); 0 zone resets clat (msec): min=47, max=725, avg=151.89, stdev=69.04 lat (msec): min=47, max=725, avg=151.90, stdev=69.04 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 82], 20.00th=[ 97], | 30.00th=[ 110], 40.00th=[ 123], 50.00th=[ 138], 60.00th=[ 155], | 70.00th=[ 176], 80.00th=[ 201], 90.00th=[ 241], 95.00th=[ 275], | 99.00th=[ 376], 99.50th=[ 435], 99.90th=[ 701], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 55, per=24.88%, avg=20.40, stdev= 8.82, samples=595 iops : min= 1, max= 13, avg= 4.44, stdev= 2.25, samples=595 lat (msec) : 10=1.30%, 20=9.31%, 50=25.26%, 100=21.68%, 250=37.96% lat (msec) : 500=4.36%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.16%, ctx=5603, 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=145183: Mon Sep 14 23:27:23 2026 read: IOPS=5, BW=20.0KiB/s (20.5kB/s)(6028KiB/301261msec) clat (msec): min=6, max=540, avg=44.54, stdev=39.43 lat (msec): min=6, max=540, avg=44.54, stdev=39.43 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 60], 90.00th=[ 84], 95.00th=[ 109], | 99.00th=[ 190], 99.50th=[ 288], 99.90th=[ 376], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 95, per=28.83%, avg=22.49, stdev=14.13, samples=515 iops : min= 1, max= 23, avg= 4.97, stdev= 3.55, samples=515 write: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6260KiB/301261msec); 0 zone resets clat (msec): min=44, max=1239, avg=149.52, stdev=71.64 lat (msec): min=44, max=1239, avg=149.53, stdev=71.64 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 74], 10.00th=[ 83], 20.00th=[ 96], | 30.00th=[ 110], 40.00th=[ 122], 50.00th=[ 133], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 192], 90.00th=[ 241], 95.00th=[ 279], | 99.00th=[ 368], 99.50th=[ 401], 99.90th=[ 726], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 47, per=25.11%, avg=20.59, stdev= 8.67, samples=582 iops : min= 1, max= 11, avg= 4.49, stdev= 2.22, samples=582 lat (msec) : 10=1.37%, 20=8.50%, 50=26.11%, 100=21.39%, 250=38.12% lat (msec) : 500=4.43%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5400, 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=145184: Mon Sep 14 23:27:23 2026 read: IOPS=5, BW=20.0KiB/s (20.5kB/s)(6052KiB/301895msec) clat (msec): min=7, max=539, avg=44.56, stdev=41.08 lat (msec): min=7, max=539, avg=44.56, stdev=41.08 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 82], 95.00th=[ 111], | 99.00th=[ 222], 99.50th=[ 259], 99.90th=[ 359], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 87, per=29.17%, avg=22.76, stdev=14.73, samples=512 iops : min= 1, max= 21, avg= 5.04, stdev= 3.70, samples=512 write: IOPS=5, BW=20.7KiB/s (21.2kB/s)(6236KiB/301895msec); 0 zone resets clat (msec): min=46, max=1226, avg=150.30, stdev=72.44 lat (msec): min=46, max=1226, avg=150.30, stdev=72.44 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 72], 10.00th=[ 83], 20.00th=[ 95], | 30.00th=[ 111], 40.00th=[ 123], 50.00th=[ 136], 60.00th=[ 150], | 70.00th=[ 169], 80.00th=[ 194], 90.00th=[ 236], 95.00th=[ 275], | 99.00th=[ 368], 99.50th=[ 439], 99.90th=[ 735], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 47, per=24.91%, avg=20.43, stdev= 8.71, samples=585 iops : min= 1, max= 11, avg= 4.45, stdev= 2.22, samples=585 lat (msec) : 10=1.14%, 20=9.15%, 50=26.11%, 100=21.65%, 250=37.60% lat (msec) : 500=4.20%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.19%, ctx=5617, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=78.8KiB/s (80.7kB/s), 19.5KiB/s-20.0KiB/s (19.0kB/s-20.5kB/s), io=23.4MiB (24.6MB), run=301261-304801msec WRITE: bw=82.5KiB/s (84.5kB/s), 20.7KiB/s-20.8KiB/s (21.2kB/s-21.3kB/s), io=24.6MiB (25.7MB), run=301261-304801msec 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=145249: Mon Sep 14 23:28:03 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(5920KiB/28204msec) clat (usec): min=32, max=184375, avg=35436.39, stdev=34023.54 lat (usec): min=32, max=184401, avg=35437.56, stdev=34023.87 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 60], 20.00th=[ 72], | 30.00th=[ 13304], 40.00th=[ 23987], 50.00th=[ 30016], 60.00th=[ 38536], | 70.00th=[ 48497], 80.00th=[ 58459], 90.00th=[ 76022], 95.00th=[ 99091], | 99.00th=[158335], 99.50th=[170918], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 541, per=24.65%, avg=209.07, stdev=108.53, samples=55 iops : min= 1, max= 33, avg=12.33, stdev= 6.80, samples=55 write: IOPS=14, BW=226KiB/s (231kB/s)(6368KiB/28204msec); 0 zone resets clat (usec): min=1371, max=447784, avg=37806.81, stdev=47958.89 lat (usec): min=1372, max=447785, avg=37809.34, stdev=47958.75 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1631], 10.00th=[ 1991], 20.00th=[ 3720], | 30.00th=[ 6980], 40.00th=[ 11469], 50.00th=[ 19530], 60.00th=[ 34866], | 70.00th=[ 47973], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[252707], 99.50th=[258999], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 32, max= 468, per=25.42%, avg=226.73, stdev=109.26, samples=55 iops : min= 2, max= 29, avg=13.45, stdev= 6.84, samples=55 lat (usec) : 50=1.69%, 100=10.55%, 250=1.04%, 500=0.26%, 750=0.13% lat (msec) : 2=5.60%, 4=5.99%, 10=8.33%, 20=8.85%, 50=28.65% lat (msec) : 100=22.79%, 250=5.60%, 500=0.52% cpu : usr=0.07%, sys=5.29%, ctx=1311, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145250: Mon Sep 14 23:28:03 2026 read: IOPS=12, BW=206KiB/s (211kB/s)(5744KiB/27906msec) clat (usec): min=34, max=245500, avg=35629.63, stdev=32964.82 lat (usec): min=34, max=245501, avg=35630.78, stdev=32964.79 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 71], | 30.00th=[ 15270], 40.00th=[ 25822], 50.00th=[ 31851], 60.00th=[ 39584], | 70.00th=[ 48497], 80.00th=[ 62653], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[141558], 99.50th=[181404], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 24, max= 442, per=24.64%, avg=208.94, stdev=93.62, samples=53 iops : min= 1, max= 27, avg=12.32, stdev= 5.86, samples=53 write: IOPS=14, BW=235KiB/s (240kB/s)(6544KiB/27906msec); 0 zone resets clat (usec): min=1289, max=304383, avg=36876.48, stdev=47800.47 lat (usec): min=1291, max=304385, avg=36878.57, stdev=47800.39 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1696], 10.00th=[ 2245], 20.00th=[ 4228], | 30.00th=[ 6718], 40.00th=[ 9634], 50.00th=[ 19006], 60.00th=[ 29230], | 70.00th=[ 41681], 80.00th=[ 64750], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[233833], 99.50th=[274727], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 31, max= 632, per=25.96%, avg=231.56, stdev=115.43, samples=54 iops : min= 1, max= 39, avg=13.76, stdev= 7.18, samples=54 lat (usec) : 50=1.69%, 100=10.16%, 250=0.39%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.30%, 4=6.51%, 10=11.33%, 20=7.94%, 50=30.21% lat (msec) : 100=21.09%, 250=5.47%, 500=0.52% cpu : usr=0.08%, sys=5.20%, ctx=1328, 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=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=145251: Mon Sep 14 23:28:03 2026 read: IOPS=13, BW=222KiB/s (227kB/s)(6256KiB/28234msec) clat (usec): min=39, max=245036, avg=37176.31, stdev=32403.22 lat (usec): min=39, max=245037, avg=37177.71, stdev=32403.12 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 72], | 30.00th=[ 19268], 40.00th=[ 28181], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 51643], 80.00th=[ 63177], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[117965], 99.50th=[164627], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 63, max= 410, per=26.26%, avg=222.69, stdev=88.12, samples=55 iops : min= 3, max= 25, avg=13.20, stdev= 5.53, samples=55 write: IOPS=13, BW=214KiB/s (219kB/s)(6032KiB/28234msec); 0 zone resets clat (usec): min=1359, max=313787, avg=36198.50, stdev=41518.76 lat (usec): min=1362, max=313788, avg=36217.11, stdev=41515.75 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1663], 10.00th=[ 1975], 20.00th=[ 4817], | 30.00th=[ 7046], 40.00th=[ 11469], 50.00th=[ 20579], 60.00th=[ 32375], | 70.00th=[ 47973], 80.00th=[ 62653], 90.00th=[ 86508], 95.00th=[112722], | 99.00th=[198181], 99.50th=[217056], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 63, max= 415, per=23.75%, avg=211.87, stdev=86.23, samples=55 iops : min= 3, max= 25, avg=12.51, stdev= 5.40, samples=55 lat (usec) : 50=1.69%, 100=10.81%, 250=0.65%, 500=0.52% lat (msec) : 2=5.08%, 4=3.26%, 10=9.64%, 20=7.94%, 50=30.47% lat (msec) : 100=24.74%, 250=5.08%, 500=0.13% cpu : usr=0.08%, sys=5.28%, ctx=1399, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145252: Mon Sep 14 23:28:03 2026 read: IOPS=14, BW=225KiB/s (230kB/s)(6032KiB/26803msec) clat (usec): min=34, max=264258, avg=36175.37, stdev=33839.88 lat (usec): min=34, max=264260, avg=36176.81, stdev=33840.18 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 74], | 30.00th=[ 17171], 40.00th=[ 26084], 50.00th=[ 32900], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 60556], 90.00th=[ 73925], 95.00th=[ 93848], | 99.00th=[139461], 99.50th=[212861], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 63, max= 476, per=26.34%, avg=223.35, stdev=93.33, samples=52 iops : min= 3, max= 29, avg=13.25, stdev= 5.86, samples=52 write: IOPS=14, BW=233KiB/s (239kB/s)(6256KiB/26803msec); 0 zone resets clat (usec): min=1404, max=306919, avg=33530.57, stdev=40678.87 lat (usec): min=1406, max=306922, avg=33532.74, stdev=40678.93 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1680], 10.00th=[ 2024], 20.00th=[ 4424], | 30.00th=[ 6325], 40.00th=[ 9241], 50.00th=[ 15926], 60.00th=[ 29230], | 70.00th=[ 42206], 80.00th=[ 58983], 90.00th=[ 84411], 95.00th=[111674], | 99.00th=[173016], 99.50th=[278922], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 63, max= 509, per=25.97%, avg=231.65, stdev=101.88, samples=52 iops : min= 3, max= 31, avg=13.77, stdev= 6.45, samples=52 lat (usec) : 50=1.43%, 100=10.94%, 250=0.39%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=5.08%, 4=4.82%, 10=11.59%, 20=8.33%, 50=29.04% lat (msec) : 100=22.27%, 250=4.95%, 500=0.39% cpu : usr=0.06%, sys=5.24%, ctx=1325, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=848KiB/s (869kB/s), 206KiB/s-225KiB/s (211kB/s-230kB/s), io=23.4MiB (24.5MB), run=26803-28234msec WRITE: bw=893KiB/s (914kB/s), 214KiB/s-235KiB/s (219kB/s-240kB/s), io=24.6MiB (25.8MB), run=26803-28234msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145244: Mon Sep 14 23:28:48 2026 read: IOPS=5, BW=81.0KiB/s (82.0kB/s)(5920KiB/73061msec) clat (msec): min=8, max=372, avg=39.54, stdev=47.15 lat (msec): min=8, max=372, avg=39.55, stdev=47.15 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 46], 90.00th=[ 73], 95.00th=[ 127], | 99.00th=[ 292], 99.50th=[ 355], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 320, per=27.79%, avg=90.59, stdev=59.47, samples=128 iops : min= 1, max= 20, avg= 4.93, stdev= 3.79, samples=128 write: IOPS=5, BW=87.2KiB/s (89.3kB/s)(6368KiB/73061msec); 0 zone resets clat (msec): min=50, max=442, avg=146.33, stdev=65.56 lat (msec): min=50, max=442, avg=146.34, stdev=65.56 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 74], 10.00th=[ 83], 20.00th=[ 95], | 30.00th=[ 106], 40.00th=[ 117], 50.00th=[ 130], 60.00th=[ 142], | 70.00th=[ 163], 80.00th=[ 190], 90.00th=[ 236], 95.00th=[ 271], | 99.00th=[ 384], 99.50th=[ 414], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 22, max= 191, per=25.89%, avg=88.79, stdev=36.37, samples=141 iops : min= 1, max= 11, avg= 4.82, stdev= 2.38, samples=141 lat (msec) : 10=0.91%, 20=16.28%, 50=22.27%, 100=18.36%, 250=37.76% lat (msec) : 500=4.43% cpu : usr=0.03%, sys=1.16%, ctx=1339, 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=145245: Mon Sep 14 23:28:48 2026 read: IOPS=4, BW=78.4KiB/s (80.3kB/s)(5744KiB/73270msec) clat (msec): min=5, max=338, avg=38.98, stdev=39.13 lat (msec): min=5, max=338, avg=38.98, stdev=39.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 94], 95.00th=[ 123], | 99.00th=[ 199], 99.50th=[ 241], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 22, max= 318, per=28.91%, avg=94.26, stdev=60.10, samples=119 iops : min= 1, max= 19, avg= 5.16, stdev= 3.80, samples=119 write: IOPS=5, BW=89.3KiB/s (91.5kB/s)(6544KiB/73270msec); 0 zone resets clat (msec): min=41, max=457, avg=144.47, stdev=63.52 lat (msec): min=41, max=457, avg=144.48, stdev=63.52 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 71], 10.00th=[ 82], 20.00th=[ 93], | 30.00th=[ 107], 40.00th=[ 120], 50.00th=[ 131], 60.00th=[ 142], | 70.00th=[ 159], 80.00th=[ 190], 90.00th=[ 222], 95.00th=[ 288], | 99.00th=[ 363], 99.50th=[ 376], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 30, max= 188, per=26.12%, avg=89.61, stdev=37.56, samples=143 iops : min= 1, max= 11, avg= 4.87, stdev= 2.48, samples=143 lat (msec) : 10=1.17%, 20=15.36%, 50=20.57%, 100=18.23%, 250=41.15% lat (msec) : 500=3.52% cpu : usr=0.04%, sys=1.01%, ctx=1286, 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=145246: Mon Sep 14 23:28:48 2026 read: IOPS=5, BW=89.8KiB/s (92.0kB/s)(6256KiB/69628msec) clat (msec): min=7, max=229, avg=36.22, stdev=32.70 lat (msec): min=7, max=229, avg=36.22, stdev=32.70 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 72], 95.00th=[ 111], | 99.00th=[ 167], 99.50th=[ 215], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 30, max= 287, per=31.10%, avg=101.39, stdev=64.91, samples=122 iops : min= 1, max= 17, avg= 5.60, stdev= 4.16, samples=122 write: IOPS=5, BW=86.6KiB/s (88.7kB/s)(6032KiB/69628msec); 0 zone resets clat (msec): min=49, max=458, avg=146.64, stdev=70.17 lat (msec): min=49, max=458, avg=146.65, stdev=70.18 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 68], 10.00th=[ 80], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 115], 50.00th=[ 128], 60.00th=[ 142], | 70.00th=[ 165], 80.00th=[ 197], 90.00th=[ 247], 95.00th=[ 300], | 99.00th=[ 388], 99.50th=[ 426], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 30, max= 160, per=25.10%, avg=86.10, stdev=38.08, samples=137 iops : min= 1, max= 10, avg= 4.63, stdev= 2.48, samples=137 lat (msec) : 10=1.69%, 20=15.89%, 50=23.96%, 100=19.01%, 250=34.90% lat (msec) : 500=4.56% cpu : usr=0.02%, sys=1.08%, ctx=1292, 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=145247: Mon Sep 14 23:28:48 2026 read: IOPS=5, BW=84.6KiB/s (86.7kB/s)(6032KiB/71261msec) clat (msec): min=6, max=219, avg=37.61, stdev=33.69 lat (msec): min=6, max=219, avg=37.61, stdev=33.69 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 116], | 99.00th=[ 182], 99.50th=[ 201], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 315, per=29.73%, avg=96.93, stdev=63.59, samples=121 iops : min= 1, max= 19, avg= 5.32, stdev= 3.99, samples=121 write: IOPS=5, BW=87.8KiB/s (89.9kB/s)(6256KiB/71261msec); 0 zone resets clat (msec): min=51, max=434, avg=145.84, stdev=65.27 lat (msec): min=51, max=434, avg=145.84, stdev=65.27 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 72], 10.00th=[ 79], 20.00th=[ 94], | 30.00th=[ 106], 40.00th=[ 117], 50.00th=[ 129], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 190], 90.00th=[ 234], 95.00th=[ 284], | 99.00th=[ 359], 99.50th=[ 397], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 30, max= 191, per=25.84%, avg=88.62, stdev=38.81, samples=138 iops : min= 1, max= 11, avg= 4.79, stdev= 2.54, samples=138 lat (msec) : 10=1.69%, 20=16.02%, 50=21.22%, 100=20.57%, 250=36.59% lat (msec) : 500=3.91% cpu : usr=0.04%, sys=1.13%, ctx=1289, 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=327KiB/s (335kB/s), 78.4KiB/s-89.8KiB/s (80.3kB/s-92.0kB/s), io=23.4MiB (24.5MB), run=69628-73270msec WRITE: bw=344KiB/s (352kB/s), 86.6KiB/s-89.3KiB/s (88.7kB/s-91.5kB/s), io=24.6MiB (25.8MB), run=69628-73270msec 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=145272: Mon Sep 14 23:29:05 2026 read: IOPS=2, BW=2444KiB/s (2503kB/s)(7168KiB/2933msec) clat (usec): min=1296, max=371932, avg=225903.55, stdev=121806.71 lat (usec): min=1297, max=371933, avg=225905.24, stdev=121806.67 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1303], 10.00th=[ 1303], 20.00th=[175113], | 30.00th=[193987], 40.00th=[193987], 50.00th=[221250], 60.00th=[299893], | 70.00th=[299893], 80.00th=[316670], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 2000, max= 4079, per=98.57%, avg=3039.00, stdev=1039.50, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1746KiB/s (1788kB/s)(5120KiB/2933msec); 0 zone resets clat (msec): min=176, max=407, avg=258.77, stdev=88.77 lat (msec): min=176, max=407, avg=258.87, stdev=88.77 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 264], 80.00th=[ 264], 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= 2000, max= 4023, per=62.03%, avg=2678.00, stdev=1164.82, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=15.93%, ctx=235, 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=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=145273: Mon Sep 14 23:29:05 2026 read: IOPS=0, BW=308KiB/s (316kB/s)(2048KiB/6641msec) clat (usec): min=603, max=234413, avg=117508.14, stdev=165328.74 lat (usec): min=605, max=234416, avg=117510.69, stdev=165329.56 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 603], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 603], 60.00th=[233833], | 70.00th=[233833], 80.00th=[233833], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 2035, max= 2043, per=66.14%, avg=2039.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1542KiB/s (1579kB/s)(10.0MiB/6641msec); 0 zone resets clat (msec): min=117, max=3676, avg=636.88, stdev=1085.23 lat (msec): min=117, max=3676, avg=637.23, stdev=1085.20 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 167], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 384], 90.00th=[ 793], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 2027, max= 6107, per=84.94%, avg=3667.00, stdev=1704.41, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.92%, ctx=147, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145274: Mon Sep 14 23:29:05 2026 read: IOPS=1, BW=1066KiB/s (1091kB/s)(6144KiB/5765msec) clat (usec): min=522, max=3252.2k, avg=597340.25, stdev=1304192.94 lat (usec): min=523, max=3252.2k, avg=597341.74, stdev=1304193.07 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], | 20.00th=[ 1156], 30.00th=[ 1156], 40.00th=[ 1975], | 50.00th=[ 1975], 60.00th=[ 79168], 70.00th=[ 248513], | 80.00th=[ 248513], 90.00th=[3238003], 95.00th=[3238003], | 99.00th=[3238003], 99.50th=[3238003], 99.90th=[3238003], | 99.95th=[3238003], 99.99th=[3238003] bw ( KiB/s): min= 2011, max= 4047, per=87.54%, avg=2699.00, stdev=1167.49, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1066KiB/s (1091kB/s)(6144KiB/5765msec); 0 zone resets clat (msec): min=92, max=932, avg=343.78, stdev=309.72 lat (msec): min=93, max=932, avg=344.01, stdev=309.58 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 215], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1398, max= 2039, per=43.13%, avg=1862.00, stdev=309.77, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 100=16.67%, 250=33.33%, 500=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=8.95%, ctx=526, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145275: Mon Sep 14 23:29:05 2026 read: IOPS=1, BW=1645KiB/s (1685kB/s)(5120KiB/3112msec) clat (msec): min=4, max=309, avg=185.74, stdev=117.91 lat (msec): min=4, max=309, avg=185.74, stdev=117.91 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 184], 60.00th=[ 184], | 70.00th=[ 271], 80.00th=[ 271], 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= 4023, max= 4023, per=100.00%, avg=4023.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2303KiB/s (2359kB/s)(7168KiB/3112msec); 0 zone resets clat (msec): min=122, max=558, avg=302.50, stdev=164.81 lat (msec): min=122, max=558, avg=302.59, stdev=164.82 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 159], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 241], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 439], 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= 1568, max= 4079, per=55.93%, avg=2414.50, stdev=1128.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 10=8.33%, 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=15.81%, ctx=160, 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=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=3084KiB/s (3158kB/s), 308KiB/s-2444KiB/s (316kB/s-2503kB/s), io=20.0MiB (20.0MB), run=2933-6641msec WRITE: bw=4317KiB/s (4421kB/s), 1066KiB/s-2303KiB/s (1091kB/s-2359kB/s), io=28.0MiB (29.4MB), run=2933-6641msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145278: Mon Sep 14 23:29:06 2026 read: IOPS=1, BW=1215KiB/s (1244kB/s)(7168KiB/5898msec) clat (msec): min=142, max=754, avg=289.21, stdev=218.37 lat (msec): min=142, max=754, avg=289.21, stdev=218.37 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 144], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 218], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 359], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1892, max= 4087, per=100.00%, avg=3027.25, stdev=1225.25, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=868KiB/s (889kB/s)(5120KiB/5898msec); 0 zone resets clat (msec): min=268, max=2676, avg=763.33, stdev=1069.70 lat (msec): min=268, max=2676, avg=763.42, stdev=1069.70 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 2035, max= 2043, per=52.09%, avg=2040.00, stdev= 3.83, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=41.67%, 500=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.14%, ctx=71, 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=145279: Mon Sep 14 23:29:06 2026 read: IOPS=0, BW=284KiB/s (291kB/s)(2048KiB/7218msec) clat (msec): min=112, max=369, avg=240.63, stdev=181.81 lat (msec): min=112, max=369, avg=240.63, stdev=181.81 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 112], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 1976, max= 2031, per=71.63%, avg=2003.50, stdev=38.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1419KiB/s (1453kB/s)(10.0MiB/7218msec); 0 zone resets clat (msec): min=155, max=3580, avg=670.47, stdev=1036.45 lat (msec): min=155, max=3580, avg=670.58, stdev=1036.45 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 180], | 30.00th=[ 190], 40.00th=[ 296], 50.00th=[ 321], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 600], 90.00th=[ 659], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 2035, max= 4087, per=83.32%, avg=3263.00, stdev=1117.40, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.79%, ctx=71, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145280: Mon Sep 14 23:29:06 2026 read: IOPS=0, BW=926KiB/s (949kB/s)(6144KiB/6633msec) clat (msec): min=54, max=2938, avg=620.30, stdev=1137.66 lat (msec): min=54, max=2938, avg=620.30, stdev=1137.66 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 220], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 2031, max= 4096, per=97.22%, avg=2719.33, stdev=1192.23, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=0, BW=926KiB/s (949kB/s)(6144KiB/6633msec); 0 zone resets clat (msec): min=196, max=993, avg=483.48, stdev=274.06 lat (msec): min=197, max=993, avg=484.02, stdev=274.01 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 477], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1393, max= 2048, per=48.79%, avg=1910.80, stdev=289.53, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.59%, ctx=86, 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=145281: Mon Sep 14 23:29:06 2026 read: IOPS=0, BW=699KiB/s (716kB/s)(5120KiB/7321msec) clat (msec): min=65, max=209, avg=134.91, stdev=59.06 lat (msec): min=65, max=209, avg=134.91, stdev=59.06 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 171], 80.00th=[ 171], 90.00th=[ 209], 95.00th=[ 209], | 99.00th=[ 209], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 4063, max= 4087, per=100.00%, avg=4075.00, stdev=16.97, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=979KiB/s (1003kB/s)(7168KiB/7321msec); 0 zone resets clat (msec): min=209, max=3682, avg=948.97, stdev=1237.05 lat (msec): min=209, max=3682, avg=949.05, stdev=1237.05 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 218], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 575], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 860], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 2031, max= 4071, per=60.70%, avg=2377.00, stdev=829.91, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=16.67%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.54%, ctx=85, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=2797KiB/s (2865kB/s), 284KiB/s-1215KiB/s (291kB/s-1244kB/s), io=20.0MiB (20.0MB), run=5898-7321msec WRITE: bw=3916KiB/s (4010kB/s), 868KiB/s-1419KiB/s (889kB/s-1453kB/s), io=28.0MiB (29.4MB), run=5898-7321msec 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=145289: Mon Sep 14 23:29:19 2026 read: IOPS=1, BW=4594KiB/s (4704kB/s)(12.0MiB/2675msec) clat (msec): min=707, max=973, avg=875.54, stdev=146.07 lat (msec): min=707, max=973, avg=875.54, stdev=146.07 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] 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=33.33%, 1000=66.67% cpu : usr=0.00%, sys=13.39%, ctx=370, 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=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=145290: Mon Sep 14 23:29:19 2026 read: IOPS=0, BW=1411KiB/s (1445kB/s)(4096KiB/2903msec) clat (nsec): min=933063k, max=933063k, avg=933062537.00, stdev= 0.00 lat (nsec): min=933065k, max=933065k, avg=933065169.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2822KiB/s (2890kB/s)(8192KiB/2903msec); 0 zone resets clat (msec): min=749, max=1145, avg=947.60, stdev=279.94 lat (msec): min=751, max=1146, avg=948.86, stdev=278.81 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 1150], | 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= 8159, max= 8159, per=72.88%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.58%, ctx=224, 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=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=145292: Mon Sep 14 23:29:19 2026 write: IOPS=1, BW=4198KiB/s (4299kB/s)(12.0MiB/2927msec); 0 zone resets clat (msec): min=803, max=1051, avg=949.23, stdev=129.63 lat (msec): min=804, max=1054, avg=950.85, stdev=130.60 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8126, max= 8159, per=72.73%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=9.19%, ctx=76, 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=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=145294: Mon Sep 14 23:29:19 2026 write: IOPS=1, BW=4357KiB/s (4462kB/s)(12.0MiB/2820msec); 0 zone resets clat (msec): min=432, max=1654, avg=926.65, stdev=643.87 lat (msec): min=432, max=1656, avg=927.74, stdev=644.43 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7876, max= 8159, per=71.62%, avg=8017.50, stdev=200.11, 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=0.07%, sys=5.14%, ctx=43, 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=5644KiB/s (5779kB/s), 1411KiB/s-4594KiB/s (1445kB/s-4704kB/s), io=16.0MiB (16.8MB), run=2675-2903msec WRITE: bw=10.9MiB/s (11.5MB/s), 2822KiB/s-4357KiB/s (2890kB/s-4462kB/s), io=32.0MiB (33.6MB), run=2820-2927msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145288: Mon Sep 14 23:29:21 2026 read: IOPS=0, BW=2745KiB/s (2811kB/s)(12.0MiB/4476msec) clat (msec): min=550, max=2123, avg=1435.33, stdev=805.07 lat (msec): min=550, max=2123, avg=1435.34, stdev=805.07 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 70.00th=[ 2123], 80.00th=[ 2123], 90.00th=[ 2123], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.95%, ctx=81, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145291: Mon Sep 14 23:29:21 2026 read: IOPS=0, BW=978KiB/s (1002kB/s)(4096KiB/4188msec) clat (nsec): min=1855.0M, max=1855.0M, avg=1855044336.00, stdev= 0.00 lat (nsec): min=1855.0M, max=1855.0M, avg=1855046476.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1854], 5.00th=[ 1854], 10.00th=[ 1854], 20.00th=[ 1854], | 30.00th=[ 1854], 40.00th=[ 1854], 50.00th=[ 1854], 60.00th=[ 1854], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1956KiB/s (2003kB/s)(8192KiB/4188msec); 0 zone resets clat (msec): min=450, max=1804, avg=1127.34, stdev=957.52 lat (msec): min=452, max=1804, avg=1128.34, stdev=956.46 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 1804], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.61%, ctx=67, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145293: Mon Sep 14 23:29:21 2026 write: IOPS=0, BW=2919KiB/s (2990kB/s)(12.0MiB/4209msec); 0 zone resets clat (msec): min=614, max=1855, avg=1384.70, stdev=672.93 lat (msec): min=614, max=1856, avg=1386.28, stdev=673.59 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 1687], 50.00th=[ 1687], 60.00th=[ 1687], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8031, max= 8192, per=100.00%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.59%, ctx=50, majf=0, minf=7 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=145295: Mon Sep 14 23:29:21 2026 write: IOPS=0, BW=3434KiB/s (3517kB/s)(12.0MiB/3578msec); 0 zone resets clat (msec): min=515, max=2099, avg=1159.81, stdev=832.74 lat (msec): min=515, max=2100, avg=1160.38, stdev=832.74 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.66%, ctx=81, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3660KiB/s (3748kB/s), 978KiB/s-2745KiB/s (1002kB/s-2811kB/s), io=16.0MiB (16.8MB), run=4188-4476msec WRITE: bw=7785KiB/s (7972kB/s), 1956KiB/s-3434KiB/s (2003kB/s-3517kB/s), io=32.0MiB (33.6MB), run=3578-4209msec