== sanity test 398b: DIO and buffer IO race ============== 03:18:25 (1789370305) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.09437 s, 16.3 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=182062: Mon Sep 14 03:19:17 2026 read: IOPS=36, BW=147KiB/s (151kB/s)(5992KiB/40642msec) clat (usec): min=26, max=739234, avg=14680.42, stdev=20030.51 lat (usec): min=27, max=739236, avg=14680.97, stdev=20030.53 clat percentiles (usec): | 1.00th=[ 102], 5.00th=[ 6128], 10.00th=[ 7242], 20.00th=[ 8717], | 30.00th=[ 9896], 40.00th=[ 11207], 50.00th=[ 12911], 60.00th=[ 14877], | 70.00th=[ 16909], 80.00th=[ 19006], 90.00th=[ 23200], 95.00th=[ 26870], | 99.00th=[ 40109], 99.50th=[ 46924], 99.90th=[ 53216], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 13, max= 199, per=25.87%, avg=147.18, stdev=33.62, samples=80 iops : min= 3, max= 49, avg=36.50, stdev= 8.39, samples=80 write: IOPS=38, BW=155KiB/s (159kB/s)(6296KiB/40642msec); 0 zone resets clat (usec): min=568, max=63347, avg=11716.09, stdev=9389.18 lat (usec): min=568, max=63348, avg=11716.75, stdev=9389.23 clat percentiles (usec): | 1.00th=[ 701], 5.00th=[ 1860], 10.00th=[ 2507], 20.00th=[ 2999], | 30.00th=[ 4424], 40.00th=[ 7308], 50.00th=[ 9765], 60.00th=[11994], | 70.00th=[15008], 80.00th=[18744], 90.00th=[24773], 95.00th=[30016], | 99.00th=[40109], 99.50th=[44827], 99.90th=[58459], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 47, max= 280, per=26.19%, avg=156.06, stdev=38.74, samples=79 iops : min= 11, max= 70, avg=38.72, stdev= 9.72, samples=79 lat (usec) : 50=0.10%, 100=0.33%, 250=0.75%, 750=0.78%, 1000=0.49% lat (msec) : 2=1.86%, 4=11.49%, 10=25.26%, 20=41.18%, 50=17.48% lat (msec) : 100=0.26%, 750=0.03% cpu : usr=0.11%, sys=25.50%, ctx=8714, 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=182063: Mon Sep 14 03:19:17 2026 read: IOPS=35, BW=142KiB/s (146kB/s)(5940KiB/41756msec) clat (usec): min=32, max=67576, avg=14820.14, stdev=7603.64 lat (usec): min=33, max=67576, avg=14820.71, stdev=7603.67 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 6063], 10.00th=[ 7373], 20.00th=[ 8848], | 30.00th=[10159], 40.00th=[11863], 50.00th=[13698], 60.00th=[15533], | 70.00th=[17433], 80.00th=[19792], 90.00th=[23725], 95.00th=[28443], | 99.00th=[41157], 99.50th=[46924], 99.90th=[57410], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 6, max= 208, per=25.03%, avg=142.43, stdev=34.59, samples=83 iops : min= 1, max= 52, avg=35.33, stdev= 8.63, samples=83 write: IOPS=38, BW=152KiB/s (156kB/s)(6348KiB/41756msec); 0 zone resets clat (usec): min=603, max=706713, avg=12303.12, stdev=19751.15 lat (usec): min=603, max=706713, avg=12303.81, stdev=19751.16 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 1991], 10.00th=[ 2507], 20.00th=[ 3130], | 30.00th=[ 4883], 40.00th=[ 7963], 50.00th=[ 9765], 60.00th=[ 11731], | 70.00th=[ 14877], 80.00th=[ 19268], 90.00th=[ 25560], 95.00th=[ 30802], | 99.00th=[ 38536], 99.50th=[ 42206], 99.90th=[ 72877], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 272, per=25.49%, avg=151.89, stdev=39.89, samples=83 iops : min= 1, max= 68, avg=37.69, stdev=10.04, samples=83 lat (usec) : 50=0.07%, 100=0.46%, 250=0.46%, 750=0.26%, 1000=0.33% lat (msec) : 2=2.12%, 4=11.07%, 10=25.85%, 20=40.49%, 50=18.65% lat (msec) : 100=0.23%, 750=0.03% cpu : usr=0.11%, sys=25.56%, ctx=8947, 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=182064: Mon Sep 14 03:19:17 2026 read: IOPS=35, BW=143KiB/s (147kB/s)(6028KiB/42134msec) clat (usec): min=46, max=69323, avg=14780.17, stdev=8033.76 lat (usec): min=46, max=69324, avg=14780.78, stdev=8033.79 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 6194], 10.00th=[ 7308], 20.00th=[ 8848], | 30.00th=[10290], 40.00th=[11863], 50.00th=[13304], 60.00th=[15008], | 70.00th=[16909], 80.00th=[19530], 90.00th=[23462], 95.00th=[29492], | 99.00th=[44827], 99.50th=[55837], 99.90th=[68682], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 31, max= 216, per=25.26%, avg=143.72, stdev=32.82, samples=82 iops : min= 7, max= 54, avg=35.65, stdev= 8.20, samples=82 write: IOPS=37, BW=149KiB/s (152kB/s)(6260KiB/42134msec); 0 zone resets clat (usec): min=602, max=723741, avg=12552.58, stdev=20167.28 lat (usec): min=603, max=723742, avg=12553.54, stdev=20167.20 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 2278], 10.00th=[ 2671], 20.00th=[ 3261], | 30.00th=[ 5407], 40.00th=[ 8225], 50.00th=[ 10159], 60.00th=[ 11994], | 70.00th=[ 15401], 80.00th=[ 19792], 90.00th=[ 25035], 95.00th=[ 30278], | 99.00th=[ 39060], 99.50th=[ 42206], 99.90th=[ 56886], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 31, max= 232, per=24.95%, avg=148.70, stdev=36.91, samples=82 iops : min= 7, max= 58, avg=36.89, stdev= 9.31, samples=82 lat (usec) : 50=0.03%, 100=0.33%, 250=0.49%, 500=0.03%, 750=0.20% lat (usec) : 1000=0.36% lat (msec) : 2=1.24%, 4=11.20%, 10=25.13%, 20=42.12%, 50=18.46% lat (msec) : 100=0.39%, 750=0.03% cpu : usr=0.11%, sys=25.23%, ctx=9074, 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=182065: Mon Sep 14 03:19:17 2026 read: IOPS=36, BW=144KiB/s (148kB/s)(6052KiB/41897msec) clat (usec): min=26, max=72413, avg=14509.72, stdev=8001.35 lat (usec): min=27, max=72413, avg=14510.33, stdev=8001.41 clat percentiles (usec): | 1.00th=[ 111], 5.00th=[ 6325], 10.00th=[ 7177], 20.00th=[ 8586], | 30.00th=[ 9765], 40.00th=[11338], 50.00th=[12911], 60.00th=[14877], | 70.00th=[16909], 80.00th=[18744], 90.00th=[23462], 95.00th=[28443], | 99.00th=[44303], 99.50th=[55313], 99.90th=[68682], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 64, max= 224, per=25.60%, avg=145.67, stdev=30.81, samples=82 iops : min= 16, max= 56, avg=36.13, stdev= 7.73, samples=82 write: IOPS=37, BW=149KiB/s (152kB/s)(6236KiB/41897msec); 0 zone resets clat (usec): min=637, max=705114, avg=12658.85, stdev=19910.95 lat (usec): min=637, max=705115, avg=12659.73, stdev=19911.04 clat percentiles (usec): | 1.00th=[ 898], 5.00th=[ 2212], 10.00th=[ 2606], 20.00th=[ 3228], | 30.00th=[ 5276], 40.00th=[ 8455], 50.00th=[ 10290], 60.00th=[ 12256], | 70.00th=[ 15664], 80.00th=[ 19530], 90.00th=[ 25297], 95.00th=[ 29754], | 99.00th=[ 40109], 99.50th=[ 47449], 99.90th=[ 93848], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 20, max= 215, per=24.93%, avg=148.59, stdev=39.24, samples=83 iops : min= 5, max= 53, avg=36.87, stdev= 9.80, samples=83 lat (usec) : 50=0.07%, 100=0.26%, 250=0.55%, 750=0.33%, 1000=0.29% lat (msec) : 2=1.17%, 4=11.30%, 10=26.33%, 20=41.83%, 50=17.38% lat (msec) : 100=0.46%, 750=0.03% cpu : usr=0.11%, sys=25.32%, ctx=9040, 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=570KiB/s (584kB/s), 142KiB/s-147KiB/s (146kB/s-151kB/s), io=23.4MiB (24.6MB), run=40642-42134msec WRITE: bw=597KiB/s (611kB/s), 149KiB/s-155KiB/s (152kB/s-159kB/s), io=24.6MiB (25.7MB), run=40642-42134msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182067: Mon Sep 14 03:19:22 2026 read: IOPS=31, BW=126KiB/s (129kB/s)(5992KiB/47467msec) clat (msec): min=2, max=746, avg=13.98, stdev=22.00 lat (msec): min=2, max=746, avg=13.98, stdev=22.00 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 22], 90.00th=[ 31], 95.00th=[ 38], | 99.00th=[ 52], 99.50th=[ 58], 99.90th=[ 85], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 47, max= 472, per=25.15%, avg=126.99, stdev=90.66, samples=93 iops : min= 11, max= 118, avg=31.44, stdev=22.75, samples=93 write: IOPS=33, BW=133KiB/s (136kB/s)(6296KiB/47467msec); 0 zone resets clat (usec): min=3698, max=77133, avg=16764.65, stdev=11828.47 lat (usec): min=3699, max=77134, avg=16765.45, stdev=11828.62 clat percentiles (usec): | 1.00th=[ 4228], 5.00th=[ 4883], 10.00th=[ 5342], 20.00th=[ 6128], | 30.00th=[ 7701], 40.00th=[10421], 50.00th=[13304], 60.00th=[16909], | 70.00th=[21365], 80.00th=[26346], 90.00th=[33424], 95.00th=[39584], | 99.00th=[53216], 99.50th=[61080], 99.90th=[73925], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 24, max= 472, per=25.16%, avg=133.10, stdev=92.92, samples=93 iops : min= 6, max= 118, avg=32.97, stdev=23.31, samples=93 lat (msec) : 4=5.73%, 10=39.75%, 20=27.54%, 50=25.85%, 100=1.11% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=11.69%, ctx=5298, 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=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=182068: Mon Sep 14 03:19:22 2026 read: IOPS=31, BW=125KiB/s (128kB/s)(5940KiB/47381msec) clat (msec): min=2, max=715, avg=13.51, stdev=21.14 lat (msec): min=2, max=715, avg=13.51, stdev=21.14 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 21], 90.00th=[ 28], 95.00th=[ 37], | 99.00th=[ 53], 99.50th=[ 58], 99.90th=[ 72], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 31, max= 456, per=25.04%, avg=126.47, stdev=91.37, samples=93 iops : min= 7, max= 114, avg=31.31, stdev=22.94, samples=93 write: IOPS=33, BW=134KiB/s (137kB/s)(6348KiB/47381msec); 0 zone resets clat (usec): min=3658, max=76745, avg=17131.14, stdev=12094.36 lat (usec): min=3658, max=76745, avg=17131.92, stdev=12094.46 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 4948], 10.00th=[ 5473], 20.00th=[ 6325], | 30.00th=[ 7832], 40.00th=[10683], 50.00th=[13829], 60.00th=[17433], | 70.00th=[21890], 80.00th=[26346], 90.00th=[33162], 95.00th=[40109], | 99.00th=[57410], 99.50th=[63177], 99.90th=[73925], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 32, max= 456, per=25.47%, avg=134.73, stdev=90.19, samples=93 iops : min= 8, max= 114, avg=33.38, stdev=22.62, samples=93 lat (msec) : 4=5.83%, 10=39.16%, 20=27.57%, 50=25.85%, 100=1.56% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=11.74%, ctx=5262, 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=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=182069: Mon Sep 14 03:19:22 2026 read: IOPS=31, BW=127KiB/s (130kB/s)(6028KiB/47458msec) clat (usec): min=2276, max=83424, avg=13140.44, stdev=10852.87 lat (usec): min=2276, max=83425, avg=13141.05, stdev=10852.94 clat percentiles (usec): | 1.00th=[ 2933], 5.00th=[ 3523], 10.00th=[ 3851], 20.00th=[ 4490], | 30.00th=[ 5866], 40.00th=[ 7832], 50.00th=[ 9372], 60.00th=[11338], | 70.00th=[14877], 80.00th=[20055], 90.00th=[28967], 95.00th=[35914], | 99.00th=[50070], 99.50th=[57934], 99.90th=[72877], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 31, max= 456, per=25.28%, avg=127.68, stdev=93.67, samples=93 iops : min= 7, max= 114, avg=31.61, stdev=23.49, samples=93 write: IOPS=32, BW=132KiB/s (135kB/s)(6260KiB/47458msec); 0 zone resets clat (msec): min=3, max=721, avg=17.59, stdev=21.46 lat (msec): min=3, max=721, avg=17.59, stdev=21.46 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 34], 95.00th=[ 40], | 99.00th=[ 56], 99.50th=[ 64], 99.90th=[ 75], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 55, max= 424, per=25.00%, avg=132.24, stdev=90.18, samples=93 iops : min= 13, max= 106, avg=32.75, stdev=22.64, samples=93 lat (msec) : 4=6.12%, 10=38.77%, 20=27.34%, 50=26.40%, 100=1.33% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=11.58%, ctx=5293, 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=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=182070: Mon Sep 14 03:19:22 2026 read: IOPS=32, BW=128KiB/s (131kB/s)(6052KiB/47165msec) clat (usec): min=2253, max=68821, avg=13221.52, stdev=10744.27 lat (usec): min=2253, max=68821, avg=13222.13, stdev=10744.33 clat percentiles (usec): | 1.00th=[ 2868], 5.00th=[ 3523], 10.00th=[ 3916], 20.00th=[ 4555], | 30.00th=[ 5997], 40.00th=[ 8029], 50.00th=[ 9503], 60.00th=[11600], | 70.00th=[14484], 80.00th=[20579], 90.00th=[30016], 95.00th=[34866], | 99.00th=[48497], 99.50th=[57410], 99.90th=[61080], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 55, max= 464, per=25.49%, avg=128.72, stdev=88.60, samples=92 iops : min= 13, max= 116, avg=31.87, stdev=22.23, samples=92 write: IOPS=33, BW=132KiB/s (135kB/s)(6236KiB/47165msec); 0 zone resets clat (msec): min=3, max=716, avg=17.34, stdev=21.21 lat (msec): min=3, max=716, avg=17.34, stdev=21.21 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 27], 90.00th=[ 33], 95.00th=[ 40], | 99.00th=[ 55], 99.50th=[ 64], 99.90th=[ 75], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 40, max= 464, per=25.09%, avg=132.72, stdev=90.91, samples=92 iops : min= 10, max= 116, avg=32.87, stdev=22.80, samples=92 lat (msec) : 4=5.50%, 10=39.03%, 20=28.52%, 50=25.75%, 100=1.17% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=11.85%, ctx=5230, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=506KiB/s (518kB/s), 125KiB/s-128KiB/s (128kB/s-131kB/s), io=23.4MiB (24.6MB), run=47165-47467msec WRITE: bw=530KiB/s (542kB/s), 132KiB/s-134KiB/s (135kB/s-137kB/s), io=24.6MiB (25.7MB), run=47165-47467msec 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=182100: Mon Sep 14 03:19:42 2026 read: IOPS=26, BW=418KiB/s (428kB/s)(5920KiB/14148msec) clat (usec): min=77, max=95798, avg=19255.65, stdev=11202.36 lat (usec): min=77, max=95799, avg=19256.30, stdev=11202.47 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 4883], 10.00th=[ 8979], 20.00th=[10814], | 30.00th=[12387], 40.00th=[14877], 50.00th=[17171], 60.00th=[19530], | 70.00th=[22676], 80.00th=[26346], 90.00th=[33817], 95.00th=[39584], | 99.00th=[56361], 99.50th=[59507], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 191, max= 672, per=24.47%, avg=410.30, stdev=127.33, samples=27 iops : min= 11, max= 42, avg=25.26, stdev= 8.01, samples=27 write: IOPS=28, BW=450KiB/s (461kB/s)(6368KiB/14148msec); 0 zone resets clat (usec): min=1178, max=81969, avg=17434.95, stdev=11434.25 lat (usec): min=1178, max=81970, avg=17435.98, stdev=11434.40 clat percentiles (usec): | 1.00th=[ 2409], 5.00th=[ 4146], 10.00th=[ 4621], 20.00th=[ 7373], | 30.00th=[ 9765], 40.00th=[12387], 50.00th=[15401], 60.00th=[17957], | 70.00th=[21890], 80.00th=[26084], 90.00th=[33162], 95.00th=[38536], | 99.00th=[52691], 99.50th=[59507], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 181, max= 702, per=25.42%, avg=448.74, stdev=163.56, samples=27 iops : min= 11, max= 43, avg=27.67, stdev=10.14, samples=27 lat (usec) : 100=1.17%, 250=0.91%, 1000=0.13% lat (msec) : 2=0.39%, 4=1.82%, 10=18.23%, 20=41.67%, 50=34.38% lat (msec) : 100=1.30% cpu : usr=0.08%, sys=28.47%, ctx=3068, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182101: Mon Sep 14 03:19:42 2026 read: IOPS=25, BW=413KiB/s (423kB/s)(5744KiB/13901msec) clat (usec): min=82, max=71898, avg=19881.87, stdev=10829.87 lat (usec): min=83, max=71899, avg=19882.48, stdev=10829.92 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 8717], 10.00th=[10552], 20.00th=[12125], | 30.00th=[13698], 40.00th=[15401], 50.00th=[17171], 60.00th=[19268], | 70.00th=[21365], 80.00th=[26870], 90.00th=[34341], 95.00th=[40633], | 99.00th=[58983], 99.50th=[66847], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 192, max= 704, per=24.69%, avg=414.00, stdev=137.73, samples=27 iops : min= 12, max= 44, avg=25.48, stdev= 8.59, samples=27 write: IOPS=29, BW=471KiB/s (482kB/s)(6544KiB/13901msec); 0 zone resets clat (usec): min=1289, max=62448, avg=16446.28, stdev=11305.57 lat (usec): min=1289, max=62449, avg=16447.34, stdev=11305.70 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 3818], 10.00th=[ 4228], 20.00th=[ 6783], | 30.00th=[ 9372], 40.00th=[11994], 50.00th=[14091], 60.00th=[16712], | 70.00th=[20317], 80.00th=[23462], 90.00th=[30802], 95.00th=[41681], | 99.00th=[55313], 99.50th=[57934], 99.90th=[62653], 99.95th=[62653], | 99.99th=[62653] bw ( KiB/s): min= 224, max= 731, per=26.40%, avg=466.00, stdev=143.17, samples=27 iops : min= 14, max= 45, avg=28.74, stdev= 8.93, samples=27 lat (usec) : 100=0.26%, 250=0.78% lat (msec) : 2=0.65%, 4=3.26%, 10=15.63%, 20=46.22%, 50=31.38% lat (msec) : 100=1.82% cpu : usr=0.12%, sys=28.98%, ctx=3049, 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=182102: Mon Sep 14 03:19:42 2026 read: IOPS=27, BW=438KiB/s (449kB/s)(6256KiB/14276msec) clat (usec): min=73, max=62541, avg=18949.71, stdev=10341.23 lat (usec): min=73, max=62542, avg=18950.33, stdev=10341.31 clat percentiles (usec): | 1.00th=[ 92], 5.00th=[ 416], 10.00th=[ 8848], 20.00th=[11076], | 30.00th=[12911], 40.00th=[14615], 50.00th=[16909], 60.00th=[19268], | 70.00th=[22676], 80.00th=[27919], 90.00th=[32900], 95.00th=[36963], | 99.00th=[52691], 99.50th=[55313], 99.90th=[62653], 99.95th=[62653], | 99.99th=[62653] bw ( KiB/s): min= 181, max= 798, per=26.28%, avg=440.64, stdev=170.10, samples=28 iops : min= 11, max= 49, avg=27.14, stdev=10.61, samples=28 write: IOPS=26, BW=423KiB/s (433kB/s)(6032KiB/14276msec); 0 zone resets clat (usec): min=863, max=68895, avg=17983.80, stdev=11546.24 lat (usec): min=864, max=68897, avg=17984.84, stdev=11546.38 clat percentiles (usec): | 1.00th=[ 2737], 5.00th=[ 4228], 10.00th=[ 5014], 20.00th=[ 8717], | 30.00th=[10814], 40.00th=[13042], 50.00th=[15664], 60.00th=[18482], | 70.00th=[22152], 80.00th=[25822], 90.00th=[33817], 95.00th=[40633], | 99.00th=[55837], 99.50th=[67634], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 256, max= 672, per=23.58%, avg=416.14, stdev=133.10, samples=28 iops : min= 16, max= 42, avg=25.61, stdev= 8.28, samples=28 lat (usec) : 100=1.04%, 250=1.30%, 500=0.26%, 1000=0.13% lat (msec) : 2=0.13%, 4=1.43%, 10=16.28%, 20=43.23%, 50=35.03% lat (msec) : 100=1.17% cpu : usr=0.10%, sys=28.09%, ctx=3052, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182103: Mon Sep 14 03:19:42 2026 read: IOPS=26, BW=423KiB/s (433kB/s)(6032KiB/14249msec) clat (usec): min=60, max=87485, avg=19177.01, stdev=11841.05 lat (usec): min=61, max=87486, avg=19177.58, stdev=11841.12 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 161], 10.00th=[ 8356], 20.00th=[11076], | 30.00th=[12649], 40.00th=[14746], 50.00th=[16909], 60.00th=[18744], | 70.00th=[21103], 80.00th=[26870], 90.00th=[34866], 95.00th=[42730], | 99.00th=[60031], 99.50th=[67634], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 181, max= 672, per=25.12%, avg=421.25, stdev=145.76, samples=28 iops : min= 11, max= 42, avg=25.93, stdev= 9.08, samples=28 write: IOPS=27, BW=439KiB/s (450kB/s)(6256KiB/14249msec); 0 zone resets clat (usec): min=1506, max=58163, avg=17478.71, stdev=11858.58 lat (usec): min=1507, max=58164, avg=17479.72, stdev=11858.69 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 3982], 10.00th=[ 4686], 20.00th=[ 6783], | 30.00th=[ 9372], 40.00th=[12125], 50.00th=[14222], 60.00th=[18220], | 70.00th=[21890], 80.00th=[26870], 90.00th=[33817], 95.00th=[40109], | 99.00th=[53216], 99.50th=[57934], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 181, max= 731, per=24.90%, avg=439.54, stdev=150.22, samples=28 iops : min= 11, max= 45, avg=27.07, stdev= 9.42, samples=28 lat (usec) : 100=1.04%, 250=1.82% lat (msec) : 2=0.13%, 4=2.47%, 10=18.36%, 20=41.67%, 50=32.42% lat (msec) : 100=2.08% cpu : usr=0.05%, sys=27.87%, ctx=2979, 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=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=1678KiB/s (1718kB/s), 413KiB/s-438KiB/s (423kB/s-449kB/s), io=23.4MiB (24.5MB), run=13901-14276msec WRITE: bw=1765KiB/s (1808kB/s), 423KiB/s-471KiB/s (433kB/s-482kB/s), io=24.6MiB (25.8MB), run=13901-14276msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182095: Mon Sep 14 03:19:43 2026 read: IOPS=24, BW=385KiB/s (395kB/s)(5920KiB/15357msec) clat (usec): min=2138, max=74213, avg=16882.09, stdev=12606.03 lat (usec): min=2138, max=74214, avg=16882.67, stdev=12606.10 clat percentiles (usec): | 1.00th=[ 2343], 5.00th=[ 4293], 10.00th=[ 5211], 20.00th=[ 6783], | 30.00th=[ 8979], 40.00th=[10552], 50.00th=[13173], 60.00th=[15401], | 70.00th=[19006], 80.00th=[25297], 90.00th=[36439], 95.00th=[41681], | 99.00th=[55313], 99.50th=[71828], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 159, max= 1184, per=23.67%, avg=369.00, stdev=218.87, samples=30 iops : min= 9, max= 74, avg=22.57, stdev=13.85, samples=30 write: IOPS=25, BW=415KiB/s (425kB/s)(6368KiB/15357msec); 0 zone resets clat (msec): min=3, max=107, avg=22.79, stdev=14.82 lat (msec): min=3, max=107, avg=22.79, stdev=14.82 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 44], 95.00th=[ 50], | 99.00th=[ 69], 99.50th=[ 78], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 159, max= 1120, per=24.30%, avg=398.57, stdev=207.99, samples=30 iops : min= 9, max= 70, avg=24.43, stdev=13.11, samples=30 lat (msec) : 4=2.34%, 10=27.08%, 20=31.25%, 50=35.81%, 100=3.39% lat (msec) : 250=0.13% cpu : usr=0.07%, sys=12.65%, ctx=1479, 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=182096: Mon Sep 14 03:19:43 2026 read: IOPS=23, BW=375KiB/s (384kB/s)(5744KiB/15309msec) clat (usec): min=3336, max=89971, avg=18139.81, stdev=13106.27 lat (usec): min=3337, max=89972, avg=18140.40, stdev=13106.32 clat percentiles (usec): | 1.00th=[ 3785], 5.00th=[ 4686], 10.00th=[ 5473], 20.00th=[ 7701], | 30.00th=[ 9634], 40.00th=[11731], 50.00th=[14222], 60.00th=[16909], | 70.00th=[20841], 80.00th=[28443], 90.00th=[36963], 95.00th=[42730], | 99.00th=[60556], 99.50th=[76022], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 160, max= 1120, per=23.80%, avg=371.03, stdev=179.59, samples=30 iops : min= 10, max= 70, avg=22.70, stdev=11.31, samples=30 write: IOPS=26, BW=427KiB/s (438kB/s)(6544KiB/15309msec); 0 zone resets clat (msec): min=4, max=103, avg=21.46, stdev=14.43 lat (msec): min=4, max=103, avg=21.46, stdev=14.43 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 39], 95.00th=[ 51], | 99.00th=[ 67], 99.50th=[ 84], 99.90th=[ 105], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 191, max= 1184, per=25.27%, avg=414.43, stdev=221.93, samples=30 iops : min= 11, max= 74, avg=25.40, stdev=14.05, samples=30 lat (msec) : 4=0.65%, 10=25.78%, 20=34.64%, 50=34.90%, 100=3.91% lat (msec) : 250=0.13% cpu : usr=0.08%, sys=12.79%, ctx=1428, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182097: Mon Sep 14 03:19:43 2026 read: IOPS=25, BW=409KiB/s (418kB/s)(6256KiB/15311msec) clat (usec): min=3485, max=80501, avg=16528.10, stdev=13475.40 lat (usec): min=3485, max=80502, avg=16528.74, stdev=13475.48 clat percentiles (usec): | 1.00th=[ 4228], 5.00th=[ 4817], 10.00th=[ 5211], 20.00th=[ 7111], | 30.00th=[ 8225], 40.00th=[10159], 50.00th=[11863], 60.00th=[14091], | 70.00th=[17957], 80.00th=[22676], 90.00th=[34341], 95.00th=[45351], | 99.00th=[71828], 99.50th=[76022], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 159, max= 1344, per=25.90%, avg=403.80, stdev=262.63, samples=30 iops : min= 9, max= 84, avg=24.73, stdev=16.60, samples=30 write: IOPS=24, BW=394KiB/s (403kB/s)(6032KiB/15311msec); 0 zone resets clat (usec): min=4450, max=77468, avg=23342.26, stdev=14367.29 lat (usec): min=4451, max=77469, avg=23343.53, stdev=14367.47 clat percentiles (usec): | 1.00th=[ 5211], 5.00th=[ 6259], 10.00th=[ 7767], 20.00th=[10159], | 30.00th=[12649], 40.00th=[16319], 50.00th=[20841], 60.00th=[24511], | 70.00th=[28443], 80.00th=[34341], 90.00th=[42206], 95.00th=[52167], | 99.00th=[65274], 99.50th=[70779], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 127, max= 960, per=23.37%, avg=383.23, stdev=170.30, samples=30 iops : min= 7, max= 60, avg=23.47, stdev=10.72, samples=30 lat (msec) : 4=0.26%, 10=29.04%, 20=32.55%, 50=33.46%, 100=4.69% cpu : usr=0.03%, sys=13.17%, ctx=1520, 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=182099: Mon Sep 14 03:19:43 2026 read: IOPS=24, BW=396KiB/s (405kB/s)(6032KiB/15246msec) clat (usec): min=3340, max=66635, avg=16918.17, stdev=11639.24 lat (usec): min=3340, max=66635, avg=16918.82, stdev=11639.29 clat percentiles (usec): | 1.00th=[ 3916], 5.00th=[ 4490], 10.00th=[ 5538], 20.00th=[ 7635], | 30.00th=[ 9896], 40.00th=[11207], 50.00th=[12911], 60.00th=[15795], | 70.00th=[19792], 80.00th=[25560], 90.00th=[33817], 95.00th=[40109], | 99.00th=[57934], 99.50th=[65274], 99.90th=[66847], 99.95th=[66847], | 99.99th=[66847] bw ( KiB/s): min= 160, max= 1216, per=25.10%, avg=391.30, stdev=222.29, samples=30 iops : min= 10, max= 76, avg=23.97, stdev=14.04, samples=30 write: IOPS=25, BW=410KiB/s (420kB/s)(6256KiB/15246msec); 0 zone resets clat (usec): min=5021, max=83270, avg=22364.52, stdev=14122.08 lat (usec): min=5022, max=83272, avg=22365.81, stdev=14122.26 clat percentiles (usec): | 1.00th=[ 5342], 5.00th=[ 6063], 10.00th=[ 7242], 20.00th=[10552], | 30.00th=[13304], 40.00th=[16712], 50.00th=[19530], 60.00th=[21890], | 70.00th=[26608], 80.00th=[32113], 90.00th=[39060], 95.00th=[51119], | 99.00th=[71828], 99.50th=[74974], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 223, max= 1152, per=24.94%, avg=409.07, stdev=195.37, samples=30 iops : min= 13, max= 72, avg=25.07, stdev=12.34, samples=30 lat (msec) : 4=0.52%, 10=23.96%, 20=36.59%, 50=35.42%, 100=3.52% cpu : usr=0.07%, sys=13.07%, ctx=1505, 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=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=1560KiB/s (1597kB/s), 375KiB/s-409KiB/s (384kB/s-418kB/s), io=23.4MiB (24.5MB), run=15246-15357msec WRITE: bw=1641KiB/s (1680kB/s), 394KiB/s-427KiB/s (403kB/s-438kB/s), io=24.6MiB (25.8MB), run=15246-15357msec 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=182110: Mon Sep 14 03:19:51 2026 read: IOPS=2, BW=2886KiB/s (2955kB/s)(7168KiB/2484msec) clat (msec): min=53, max=748, avg=209.48, stdev=242.54 lat (msec): min=53, max=748, avg=209.48, stdev=242.54 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 74], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 131], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 199], 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= 4071, max= 6144, per=82.26%, avg=5107.50, stdev=1465.83, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2061KiB/s (2111kB/s)(5120KiB/2484msec); 0 zone resets clat (msec): min=110, max=336, avg=198.43, stdev=87.59 lat (msec): min=110, max=336, avg=198.48, stdev=87.59 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 178], 60.00th=[ 178], | 70.00th=[ 224], 80.00th=[ 224], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 2035, max= 4096, per=31.36%, avg=2726.33, stdev=1186.18, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 100=16.67%, 250=66.67%, 500=8.33%, 750=8.33% cpu : usr=0.04%, sys=46.40%, ctx=1414, 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=182111: Mon Sep 14 03:19:51 2026 read: IOPS=0, BW=621KiB/s (636kB/s)(2048KiB/3298msec) clat (msec): min=108, max=198, avg=153.85, stdev=63.69 lat (msec): min=108, max=198, avg=153.85, stdev=63.69 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 109], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 109], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 199], 90.00th=[ 199], 95.00th=[ 199], | 99.00th=[ 199], 99.50th=[ 199], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 1738, max= 2048, per=30.49%, avg=1893.00, stdev=219.20, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3105KiB/s (3179kB/s)(10.0MiB/3298msec); 0 zone resets clat (msec): min=122, max=910, avg=296.89, stdev=295.48 lat (msec): min=122, max=910, avg=296.94, stdev=295.47 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 142], 60.00th=[ 157], | 70.00th=[ 180], 80.00th=[ 266], 90.00th=[ 785], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 2048, max= 6095, per=46.91%, avg=4077.50, stdev=1652.23, samples=4 iops : min= 2, max= 5, avg= 3.50, stdev= 1.29, samples=4 lat (msec) : 250=75.00%, 500=8.33%, 1000=16.67% cpu : usr=0.00%, sys=39.55%, ctx=157, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182112: Mon Sep 14 03:19:51 2026 read: IOPS=2, BW=2502KiB/s (2562kB/s)(6144KiB/2456msec) clat (usec): min=429, max=273917, avg=115071.62, stdev=95624.07 lat (usec): min=429, max=273918, avg=115072.46, stdev=95624.10 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 34341], | 30.00th=[ 34341], 40.00th=[117965], 50.00th=[117965], 60.00th=[120062], | 70.00th=[143655], 80.00th=[143655], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 2048, max= 8143, per=82.07%, avg=5095.50, stdev=4309.82, samples=2 iops : min= 2, max= 7, avg= 4.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2502KiB/s (2562kB/s)(6144KiB/2456msec); 0 zone resets clat (msec): min=110, max=812, avg=288.12, stdev=262.32 lat (msec): min=110, max=812, avg=288.17, stdev=262.33 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 194], 50.00th=[ 194], 60.00th=[ 203], | 70.00th=[ 266], 80.00th=[ 266], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2048, max= 4071, per=36.77%, avg=3196.67, stdev=1039.03, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (usec) : 500=8.33% lat (msec) : 50=8.33%, 250=58.33%, 500=16.67%, 1000=8.33% cpu : usr=0.00%, sys=34.46%, ctx=408, 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=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=182113: Mon Sep 14 03:19:51 2026 read: IOPS=2, BW=2133KiB/s (2185kB/s)(5120KiB/2400msec) clat (usec): min=430, max=191574, avg=123570.15, stdev=73462.38 lat (usec): min=431, max=191574, avg=123571.10, stdev=73462.16 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 429], | 30.00th=[126354], 40.00th=[126354], 50.00th=[135267], 60.00th=[135267], | 70.00th=[164627], 80.00th=[164627], 90.00th=[191890], 95.00th=[191890], | 99.00th=[191890], 99.50th=[191890], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 4071, max= 4096, per=65.77%, avg=4083.50, stdev=17.68, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2987KiB/s (3058kB/s)(7168KiB/2400msec); 0 zone resets clat (msec): min=119, max=876, avg=253.52, stdev=275.52 lat (msec): min=119, max=876, avg=253.57, stdev=275.52 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 131], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 153], 60.00th=[ 167], | 70.00th=[ 167], 80.00th=[ 182], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1738, max= 4096, per=34.38%, avg=2988.25, stdev=1271.04, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=83.33%, 1000=8.33% cpu : usr=0.00%, sys=46.69%, ctx=827, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6210KiB/s (6359kB/s), 621KiB/s-2886KiB/s (636kB/s-2955kB/s), io=20.0MiB (20.0MB), run=2400-3298msec WRITE: bw=8694KiB/s (8902kB/s), 2061KiB/s-3105KiB/s (2111kB/s-3179kB/s), io=28.0MiB (29.4MB), run=2400-3298msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182115: Mon Sep 14 03:19:51 2026 read: IOPS=2, BW=2180KiB/s (2232kB/s)(7168KiB/3288msec) clat (msec): min=35, max=720, avg=242.97, stdev=322.97 lat (msec): min=35, max=720, avg=242.97, stdev=322.97 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 47], | 30.00th=[ 59], 40.00th=[ 59], 50.00th=[ 65], 60.00th=[ 65], | 70.00th=[ 65], 80.00th=[ 709], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1946, max= 4096, per=49.34%, avg=3040.00, stdev=1214.67, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1557KiB/s (1595kB/s)(5120KiB/3288msec); 0 zone resets clat (msec): min=64, max=821, avg=311.36, stdev=329.46 lat (msec): min=64, max=821, avg=311.42, stdev=329.46 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 125], 60.00th=[ 125], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 2048, max= 6095, per=47.21%, avg=4071.50, stdev=2861.66, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 50=16.67%, 100=41.67%, 250=8.33%, 500=8.33%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.06%, sys=12.50%, ctx=137, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182116: Mon Sep 14 03:19:51 2026 read: IOPS=0, BW=616KiB/s (631kB/s)(2048KiB/3324msec) clat (msec): min=56, max=208, avg=132.80, stdev=107.42 lat (msec): min=56, max=208, avg=132.80, stdev=107.42 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 57], | 30.00th=[ 57], 40.00th=[ 57], 50.00th=[ 57], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 209], 90.00th=[ 209], 95.00th=[ 209], | 99.00th=[ 209], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 1735, max= 2031, per=30.56%, avg=1883.00, stdev=209.30, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3081KiB/s (3155kB/s)(10.0MiB/3324msec); 0 zone resets clat (msec): min=51, max=1288, avg=294.89, stdev=379.45 lat (msec): min=51, max=1288, avg=294.96, stdev=379.45 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 52], 10.00th=[ 52], 20.00th=[ 87], | 30.00th=[ 102], 40.00th=[ 105], 50.00th=[ 157], 60.00th=[ 161], | 70.00th=[ 167], 80.00th=[ 259], 90.00th=[ 575], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 2043, max= 8126, per=46.05%, avg=3971.75, stdev=2873.43, samples=4 iops : min= 1, max= 7, avg= 3.25, stdev= 2.63, samples=4 lat (msec) : 100=25.00%, 250=50.00%, 500=8.33%, 750=8.33%, 2000=8.33% cpu : usr=0.06%, sys=16.31%, ctx=105, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=182117: Mon Sep 14 03:19:51 2026 read: IOPS=1, BW=2012KiB/s (2061kB/s)(6144KiB/3053msec) clat (msec): min=67, max=420, avg=168.70, stdev=129.41 lat (msec): min=67, max=420, avg=168.70, stdev=129.41 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 78], | 30.00th=[ 78], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 159], | 70.00th=[ 161], 80.00th=[ 161], 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= 3670, max= 4096, per=63.03%, avg=3883.00, stdev=301.23, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2012KiB/s (2061kB/s)(6144KiB/3053msec); 0 zone resets clat (msec): min=22, max=1019, avg=320.23, stdev=355.15 lat (msec): min=22, max=1020, avg=320.29, stdev=355.15 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 23], 10.00th=[ 23], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 215], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 2043, max= 3419, per=29.02%, avg=2503.33, stdev=792.99, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=50.00%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=10.91%, ctx=153, 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=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=182118: Mon Sep 14 03:19:51 2026 read: IOPS=1, BW=1744KiB/s (1786kB/s)(5120KiB/2935msec) clat (msec): min=43, max=328, avg=161.60, stdev=119.68 lat (msec): min=43, max=328, avg=161.60, stdev=119.68 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 44], | 30.00th=[ 50], 40.00th=[ 50], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 215], 80.00th=[ 215], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 6144, max= 6144, per=99.72%, avg=6144.00, stdev= 0.00, samples=1 iops : min= 6, max= 6, avg= 6.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2442KiB/s (2501kB/s)(7168KiB/2935msec); 0 zone resets clat (msec): min=43, max=933, avg=277.43, stdev=335.19 lat (msec): min=43, max=933, avg=277.49, stdev=335.20 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 56], | 30.00th=[ 74], 40.00th=[ 74], 50.00th=[ 144], 60.00th=[ 159], | 70.00th=[ 159], 80.00th=[ 535], 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= 1723, max= 3670, per=28.74%, avg=2478.67, stdev=1044.06, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=25.00%, 100=16.67%, 250=33.33%, 500=8.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.07%, sys=19.09%, ctx=294, 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=6161KiB/s (6309kB/s), 616KiB/s-2180KiB/s (631kB/s-2232kB/s), io=20.0MiB (20.0MB), run=2935-3324msec WRITE: bw=8626KiB/s (8833kB/s), 1557KiB/s-3081KiB/s (1595kB/s-3155kB/s), io=28.0MiB (29.4MB), run=2935-3324msec 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=182124: Mon Sep 14 03:19:59 2026 read: IOPS=2, BW=9481KiB/s (9709kB/s)(12.0MiB/1296msec) clat (msec): min=405, max=454, avg=425.84, stdev=25.44 lat (msec): min=405, max=454, avg=425.84, stdev=25.44 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7447, max= 7968, per=60.97%, avg=7707.50, stdev=368.40, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=51.08%, ctx=2402, 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=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=182125: Mon Sep 14 03:19:59 2026 read: IOPS=0, BW=3741KiB/s (3830kB/s)(4096KiB/1095msec) clat (nsec): min=409526k, max=409526k, avg=409526422.00, stdev= 0.00 lat (nsec): min=409529k, max=409529k, avg=409528956.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 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= 7670, max= 7670, per=60.68%, avg=7670.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=7481KiB/s (7661kB/s)(8192KiB/1095msec); 0 zone resets clat (msec): min=314, max=360, avg=337.40, stdev=32.98 lat (msec): min=314, max=360, avg=337.58, stdev=32.89 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7968, max= 7968, per=42.26%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=32.08%, ctx=569, 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=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=182126: Mon Sep 14 03:19:59 2026 write: IOPS=1, BW=7070KiB/s (7240kB/s)(12.0MiB/1738msec); 0 zone resets clat (msec): min=63, max=1458, avg=561.94, stdev=778.08 lat (msec): min=64, max=1458, avg=562.15, stdev=778.01 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 64], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 163], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] lat (msec) : 100=33.33%, 250=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.83%, ctx=63, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182127: Mon Sep 14 03:19:59 2026 write: IOPS=2, BW=9323KiB/s (9547kB/s)(12.0MiB/1318msec); 0 zone resets clat (msec): min=157, max=989, avg=435.74, stdev=479.69 lat (msec): min=157, max=989, avg=436.01, stdev=479.70 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 161], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min=15814, max=15814, per=83.88%, avg=15814.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 1000=33.33% cpu : usr=0.00%, sys=19.06%, ctx=80, 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=12.3MiB/s (12.9MB/s), 3741KiB/s-9481KiB/s (3830kB/s-9709kB/s), io=16.0MiB (16.8MB), run=1095-1296msec WRITE: bw=18.4MiB/s (19.3MB/s), 7070KiB/s-9323KiB/s (7240kB/s-9547kB/s), io=32.0MiB (33.6MB), run=1095-1738msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182128: Mon Sep 14 03:19:59 2026 read: IOPS=1, BW=7511KiB/s (7691kB/s)(12.0MiB/1636msec) clat (msec): min=147, max=1019, avg=525.30, stdev=447.56 lat (msec): min=147, max=1019, avg=525.30, stdev=447.56 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.23%, ctx=101, 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=182129: Mon Sep 14 03:19:59 2026 read: IOPS=0, BW=2574KiB/s (2636kB/s)(4096KiB/1591msec) clat (nsec): min=451861k, max=451861k, avg=451861420.00, stdev= 0.00 lat (nsec): min=451864k, max=451864k, avg=451864264.00, stdev= 0.00 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=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7670, max= 7670, per=76.59%, avg=7670.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5149KiB/s (5273kB/s)(8192KiB/1591msec); 0 zone resets clat (msec): min=359, max=764, avg=561.71, stdev=286.40 lat (msec): min=359, max=764, avg=562.00, stdev=286.39 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8192, max= 8192, per=39.78%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=15.16%, ctx=67, 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=182130: Mon Sep 14 03:19:59 2026 write: IOPS=2, BW=8382KiB/s (8583kB/s)(12.0MiB/1466msec); 0 zone resets clat (msec): min=199, max=868, avg=476.53, stdev=348.93 lat (msec): min=199, max=868, avg=476.76, stdev=348.97 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8192, max= 8192, per=39.78%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=19.86%, ctx=78, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182131: Mon Sep 14 03:19:59 2026 write: IOPS=2, BW=8545KiB/s (8750kB/s)(12.0MiB/1438msec); 0 zone resets clat (msec): min=124, max=1017, avg=466.52, stdev=481.73 lat (msec): min=124, max=1017, avg=467.12, stdev=481.48 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 125], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min=16094, max=16094, per=78.15%, avg=16094.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=17.88%, ctx=124, 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=9.78MiB/s (10.3MB/s), 2574KiB/s-7511KiB/s (2636kB/s-7691kB/s), io=16.0MiB (16.8MB), run=1591-1636msec WRITE: bw=20.1MiB/s (21.1MB/s), 5149KiB/s-8545KiB/s (5273kB/s-8750kB/s), io=32.0MiB (33.6MB), run=1438-1591msec