== sanity test 398b: DIO and buffer IO race ============== 12:27:37 (1777566457) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.68297 s, 18.8 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=193353: Thu Apr 30 12:28:44 2026 read: IOPS=25, BW=101KiB/s (104kB/s)(5992KiB/59246msec) clat (usec): min=34, max=582952, avg=21270.14, stdev=18408.45 lat (usec): min=34, max=582953, avg=21270.61, stdev=18408.44 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 7111], 10.00th=[ 8848], 20.00th=[ 11338], | 30.00th=[ 13698], 40.00th=[ 16450], 50.00th=[ 19006], 60.00th=[ 21627], | 70.00th=[ 25035], 80.00th=[ 29230], 90.00th=[ 35914], 95.00th=[ 41681], | 99.00th=[ 54789], 99.50th=[ 64226], 99.90th=[ 91751], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 6, max= 224, per=24.66%, avg=99.85, stdev=32.44, samples=117 iops : min= 1, max= 56, avg=24.59, stdev= 8.23, samples=117 write: IOPS=26, BW=106KiB/s (109kB/s)(6296KiB/59246msec); 0 zone resets clat (usec): min=731, max=98092, avg=17304.25, stdev=13195.59 lat (usec): min=732, max=98092, avg=17309.33, stdev=13196.44 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 2540], 10.00th=[ 3294], 20.00th=[ 5473], | 30.00th=[ 8455], 40.00th=[11338], 50.00th=[14484], 60.00th=[17957], | 70.00th=[21365], 80.00th=[27395], 90.00th=[35914], 95.00th=[42730], | 99.00th=[57934], 99.50th=[67634], 99.90th=[93848], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 31, max= 216, per=24.91%, avg=105.63, stdev=33.52, samples=116 iops : min= 7, max= 54, avg=26.03, stdev= 8.50, samples=116 lat (usec) : 50=0.03%, 100=0.39%, 250=0.59%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.42% lat (msec) : 2=0.81%, 4=5.40%, 10=17.35%, 20=35.38%, 50=37.60% lat (msec) : 100=1.92%, 750=0.03% cpu : usr=0.05%, sys=25.22%, ctx=9878, 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=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=193354: Thu Apr 30 12:28:44 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(5940KiB/58016msec) clat (usec): min=30, max=84581, avg=20588.90, stdev=10696.46 lat (usec): min=31, max=84581, avg=20589.37, stdev=10696.45 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 7832], 10.00th=[ 9241], 20.00th=[11863], | 30.00th=[14091], 40.00th=[16188], 50.00th=[18744], 60.00th=[21365], | 70.00th=[24511], 80.00th=[28443], 90.00th=[34866], 95.00th=[39584], | 99.00th=[54789], 99.50th=[60031], 99.90th=[76022], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 6, max= 168, per=25.20%, avg=102.07, stdev=30.50, samples=115 iops : min= 1, max= 42, avg=25.14, stdev= 7.75, samples=115 write: IOPS=27, BW=109KiB/s (112kB/s)(6348KiB/58016msec); 0 zone resets clat (usec): min=762, max=580166, avg=17198.47, stdev=18822.11 lat (usec): min=763, max=580166, avg=17199.02, stdev=18822.11 clat percentiles (usec): | 1.00th=[ 930], 5.00th=[ 2769], 10.00th=[ 3392], 20.00th=[ 5342], | 30.00th=[ 8094], 40.00th=[ 11469], 50.00th=[ 14353], 60.00th=[ 17695], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 34341], 95.00th=[ 40633], | 99.00th=[ 55837], 99.50th=[ 62129], 99.90th=[ 98042], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 47, max= 223, per=25.86%, avg=109.66, stdev=35.98, samples=114 iops : min= 11, max= 55, avg=27.04, stdev= 9.09, samples=114 lat (usec) : 50=0.10%, 100=0.20%, 250=0.62%, 750=0.03%, 1000=0.59% lat (msec) : 2=0.68%, 4=5.57%, 10=17.12%, 20=36.10%, 50=37.37% lat (msec) : 100=1.60%, 750=0.03% cpu : usr=0.04%, sys=25.87%, ctx=9614, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=193355: Thu Apr 30 12:28:44 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6028KiB/57796msec) clat (usec): min=29, max=118382, avg=20258.37, stdev=10648.27 lat (usec): min=29, max=118383, avg=20259.91, stdev=10649.33 clat percentiles (usec): | 1.00th=[ 120], 5.00th=[ 7570], 10.00th=[ 9634], 20.00th=[ 11863], | 30.00th=[ 13960], 40.00th=[ 16057], 50.00th=[ 18220], 60.00th=[ 20579], | 70.00th=[ 23987], 80.00th=[ 28181], 90.00th=[ 33424], 95.00th=[ 39584], | 99.00th=[ 51643], 99.50th=[ 56361], 99.90th=[ 72877], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 47, max= 183, per=25.98%, avg=105.23, stdev=29.68, samples=114 iops : min= 11, max= 45, avg=25.93, stdev= 7.53, samples=114 write: IOPS=27, BW=108KiB/s (111kB/s)(6260KiB/57796msec); 0 zone resets clat (usec): min=740, max=583156, avg=17335.44, stdev=19200.39 lat (usec): min=740, max=583157, avg=17336.05, stdev=19200.39 clat percentiles (usec): | 1.00th=[ 930], 5.00th=[ 2638], 10.00th=[ 3261], 20.00th=[ 5211], | 30.00th=[ 7832], 40.00th=[ 10945], 50.00th=[ 14353], 60.00th=[ 17433], | 70.00th=[ 22152], 80.00th=[ 27395], 90.00th=[ 34866], 95.00th=[ 40633], | 99.00th=[ 55313], 99.50th=[ 58459], 99.90th=[ 96994], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 47, max= 207, per=25.74%, avg=109.15, stdev=34.63, samples=114 iops : min= 11, max= 51, avg=26.91, stdev= 8.71, samples=114 lat (usec) : 50=0.13%, 100=0.26%, 250=0.85%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.55% lat (msec) : 2=0.85%, 4=5.86%, 10=15.79%, 20=36.98%, 50=37.04% lat (msec) : 100=1.50%, 250=0.03%, 750=0.03% cpu : usr=0.04%, sys=25.43%, ctx=9562, 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=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=193356: Thu Apr 30 12:28:44 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(6052KiB/58834msec) clat (usec): min=30, max=88921, avg=20912.21, stdev=11631.77 lat (usec): min=30, max=88922, avg=20912.73, stdev=11631.84 clat percentiles (usec): | 1.00th=[ 102], 5.00th=[ 6849], 10.00th=[ 9241], 20.00th=[11731], | 30.00th=[14222], 40.00th=[16319], 50.00th=[19006], 60.00th=[21627], | 70.00th=[25035], 80.00th=[28967], 90.00th=[34341], 95.00th=[42730], | 99.00th=[60556], 99.50th=[69731], 99.90th=[85459], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 39, max= 208, per=25.60%, avg=103.67, stdev=33.18, samples=116 iops : min= 9, max= 52, avg=25.55, stdev= 8.41, samples=116 write: IOPS=26, BW=106KiB/s (109kB/s)(6236KiB/58834msec); 0 zone resets clat (usec): min=760, max=582322, avg=17353.16, stdev=19120.60 lat (usec): min=760, max=582324, avg=17353.72, stdev=19120.61 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2704], 10.00th=[ 3392], 20.00th=[ 5342], | 30.00th=[ 8291], 40.00th=[ 11469], 50.00th=[ 14353], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 34866], 95.00th=[ 41681], | 99.00th=[ 54789], 99.50th=[ 61080], 99.90th=[ 99091], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 47, max= 208, per=25.16%, avg=106.66, stdev=34.74, samples=116 iops : min= 11, max= 52, avg=26.29, stdev= 8.76, samples=116 lat (usec) : 50=0.07%, 100=0.39%, 250=0.98%, 1000=0.39% lat (msec) : 2=0.94%, 4=5.37%, 10=16.18%, 20=35.84%, 50=37.76% lat (msec) : 100=2.05%, 750=0.03% cpu : usr=0.06%, sys=25.36%, ctx=9714, 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=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=405KiB/s (415kB/s), 101KiB/s-104KiB/s (104kB/s-107kB/s), io=23.4MiB (24.6MB), run=57796-59246msec WRITE: bw=424KiB/s (435kB/s), 106KiB/s-109KiB/s (109kB/s-112kB/s), io=24.6MiB (25.7MB), run=57796-59246msec fio: pid=193348, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=193348: Thu Apr 30 12:28:52 2026 read: IOPS=19, BW=76.0KiB/s (77.9kB/s)(4564KiB/60028msec) clat (msec): min=3, max=587, avg=23.10, stdev=21.75 lat (msec): min=3, max=587, avg=23.10, stdev=21.75 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 34], 90.00th=[ 43], 95.00th=[ 52], | 99.00th=[ 69], 99.50th=[ 77], 99.90th=[ 88], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 16, max= 320, per=22.36%, avg=75.34, stdev=36.13, samples=118 iops : min= 4, max= 80, avg=18.49, stdev= 9.12, samples=118 write: IOPS=19, BW=78.9KiB/s (80.8kB/s)(4736KiB/60028msec); 0 zone resets clat (msec): min=4, max=118, avg=28.30, stdev=16.31 lat (msec): min=4, max=118, avg=28.30, stdev=16.31 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 34], 80.00th=[ 40], 90.00th=[ 48], 95.00th=[ 59], | 99.00th=[ 85], 99.50th=[ 99], 99.90th=[ 107], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 31, max= 336, per=22.39%, avg=78.80, stdev=33.77, samples=118 iops : min= 7, max= 84, avg=19.36, stdev= 8.45, samples=118 lat (msec) : 4=0.13%, 10=10.23%, 20=34.01%, 50=48.45%, 100=6.92% lat (msec) : 250=0.17%, 750=0.04% cpu : usr=0.03%, sys=13.26%, ctx=4985, majf=0, minf=20 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=1142,1184,0,0 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=193349: Thu Apr 30 12:28:52 2026 read: IOPS=22, BW=88.9KiB/s (91.0kB/s)(5940KiB/66819msec) clat (msec): min=2, max=575, avg=19.64, stdev=20.42 lat (msec): min=2, max=575, avg=19.64, stdev=20.42 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 40], 95.00th=[ 50], | 99.00th=[ 68], 99.50th=[ 74], 99.90th=[ 91], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 16, max= 336, per=26.55%, avg=89.46, stdev=59.83, samples=132 iops : min= 4, max= 84, avg=22.05, stdev=15.06, samples=132 write: IOPS=23, BW=95.0KiB/s (97.3kB/s)(6348KiB/66819msec); 0 zone resets clat (msec): min=4, max=118, avg=23.62, stdev=15.92 lat (msec): min=4, max=118, avg=23.62, stdev=15.92 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 78], 99.50th=[ 92], 99.90th=[ 115], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 32, max= 352, per=27.17%, avg=95.64, stdev=57.92, samples=132 iops : min= 8, max= 88, avg=23.60, stdev=14.58, samples=132 lat (msec) : 4=1.17%, 10=22.98%, 20=33.95%, 50=36.13%, 100=5.57% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.06%, sys=13.70%, ctx=6655, 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=193350: Thu Apr 30 12:28:52 2026 read: IOPS=22, BW=90.0KiB/s (92.2kB/s)(6028KiB/66961msec) clat (usec): min=2910, max=94618, avg=19548.55, stdev=14416.10 lat (usec): min=2910, max=94619, avg=19549.16, stdev=14416.07 clat percentiles (usec): | 1.00th=[ 3589], 5.00th=[ 4555], 10.00th=[ 5407], 20.00th=[ 7898], | 30.00th=[10159], 40.00th=[12518], 50.00th=[15139], 60.00th=[17957], | 70.00th=[22676], 80.00th=[30540], 90.00th=[41681], 95.00th=[50070], | 99.00th=[65274], 99.50th=[71828], 99.90th=[80217], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 24, max= 376, per=26.87%, avg=90.55, stdev=59.13, samples=132 iops : min= 6, max= 94, avg=22.33, stdev=14.89, samples=132 write: IOPS=23, BW=93.5KiB/s (95.7kB/s)(6260KiB/66961msec); 0 zone resets clat (msec): min=4, max=582, avg=23.86, stdev=21.24 lat (msec): min=4, max=582, avg=23.86, stdev=21.24 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 75], 99.50th=[ 88], 99.90th=[ 125], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 31, max= 304, per=26.66%, avg=93.83, stdev=57.67, samples=132 iops : min= 7, max= 76, avg=23.14, stdev=14.51, samples=132 lat (msec) : 4=0.94%, 10=23.31%, 20=34.05%, 50=35.97%, 100=5.60% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.04%, sys=13.74%, ctx=6623, 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=193352: Thu Apr 30 12:28:52 2026 read: IOPS=22, BW=90.4KiB/s (92.6kB/s)(6052KiB/66950msec) clat (msec): min=2, max=103, avg=19.22, stdev=14.40 lat (msec): min=2, max=103, avg=19.22, stdev=14.40 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 40], 95.00th=[ 50], | 99.00th=[ 65], 99.50th=[ 81], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 24, max= 400, per=27.00%, avg=90.98, stdev=57.74, samples=132 iops : min= 6, max= 100, avg=22.43, stdev=14.52, samples=132 write: IOPS=23, BW=93.1KiB/s (95.4kB/s)(6236KiB/66950msec); 0 zone resets clat (msec): min=4, max=580, avg=24.18, stdev=20.88 lat (msec): min=4, max=580, avg=24.18, stdev=20.88 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 44], 95.00th=[ 53], | 99.00th=[ 79], 99.50th=[ 88], 99.90th=[ 105], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 15, max= 344, per=26.55%, avg=93.46, stdev=56.93, samples=132 iops : min= 3, max= 86, avg=23.05, stdev=14.34, samples=132 lat (msec) : 4=1.24%, 10=22.72%, 20=33.17%, 50=37.40%, 100=5.27% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.05%, sys=13.87%, ctx=6640, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=337KiB/s (345kB/s), 76.0KiB/s-90.4KiB/s (77.9kB/s-92.6kB/s), io=22.1MiB (23.1MB), run=60028-66961msec WRITE: bw=352KiB/s (361kB/s), 78.9KiB/s-95.0KiB/s (80.8kB/s-97.3kB/s), io=23.0MiB (24.1MB), run=60028-66961msec 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=193381: Thu Apr 30 12:29:13 2026 read: IOPS=24, BW=389KiB/s (398kB/s)(5920KiB/15219msec) clat (usec): min=63, max=77755, avg=20585.33, stdev=11893.53 lat (usec): min=63, max=77755, avg=20586.01, stdev=11893.58 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 4817], 10.00th=[10028], 20.00th=[11994], | 30.00th=[13566], 40.00th=[15533], 50.00th=[18482], 60.00th=[20841], | 70.00th=[23462], 80.00th=[28967], 90.00th=[34866], 95.00th=[43254], | 99.00th=[64226], 99.50th=[72877], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 159, max= 573, per=24.71%, avg=388.67, stdev=102.16, samples=30 iops : min= 9, max= 35, avg=23.70, stdev= 6.53, samples=30 write: IOPS=26, BW=418KiB/s (428kB/s)(6368KiB/15219msec); 0 zone resets clat (usec): min=1197, max=91433, avg=19035.99, stdev=13372.93 lat (usec): min=1198, max=91435, avg=19037.11, stdev=13373.02 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 3916], 10.00th=[ 4817], 20.00th=[ 7242], | 30.00th=[10552], 40.00th=[12911], 50.00th=[15664], 60.00th=[19268], | 70.00th=[24249], 80.00th=[30278], 90.00th=[36963], 95.00th=[43254], | 99.00th=[63177], 99.50th=[80217], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 220, max= 574, per=25.28%, avg=418.37, stdev=97.05, samples=30 iops : min= 13, max= 35, avg=25.53, stdev= 6.08, samples=30 lat (usec) : 100=0.65%, 250=1.30%, 500=0.39% lat (msec) : 2=0.65%, 4=1.95%, 10=13.93%, 20=40.36%, 50=38.54% lat (msec) : 100=2.21% cpu : usr=0.07%, sys=26.34%, ctx=2758, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193383: Thu Apr 30 12:29:13 2026 read: IOPS=24, BW=386KiB/s (395kB/s)(5744KiB/14888msec) clat (usec): min=61, max=101661, avg=20410.40, stdev=11502.02 lat (usec): min=62, max=101662, avg=20411.11, stdev=11502.08 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 229], 10.00th=[ 9765], 20.00th=[ 12387], | 30.00th=[ 13960], 40.00th=[ 16450], 50.00th=[ 18220], 60.00th=[ 21627], | 70.00th=[ 24511], 80.00th=[ 28443], 90.00th=[ 34341], 95.00th=[ 40109], | 99.00th=[ 55313], 99.50th=[ 58983], 99.90th=[101188], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 127, max= 576, per=24.56%, avg=386.28, stdev=130.00, samples=29 iops : min= 7, max= 36, avg=23.52, stdev= 8.18, samples=29 write: IOPS=27, BW=440KiB/s (450kB/s)(6544KiB/14888msec); 0 zone resets clat (usec): min=913, max=67733, avg=18303.85, stdev=13460.34 lat (usec): min=913, max=67733, avg=18305.89, stdev=13459.93 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 3720], 10.00th=[ 4555], 20.00th=[ 5538], | 30.00th=[ 9241], 40.00th=[11863], 50.00th=[14877], 60.00th=[18220], | 70.00th=[23462], 80.00th=[29754], 90.00th=[37487], 95.00th=[44827], | 99.00th=[57934], 99.50th=[60556], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 224, max= 672, per=26.63%, avg=440.76, stdev=119.87, samples=29 iops : min= 14, max= 42, avg=26.93, stdev= 7.51, samples=29 lat (usec) : 100=1.04%, 250=1.30%, 500=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=0.52%, 4=2.86%, 10=16.54%, 20=37.63%, 50=37.50% lat (msec) : 100=1.95%, 250=0.13% cpu : usr=0.10%, sys=27.10%, ctx=2643, 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=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=193385: Thu Apr 30 12:29:13 2026 read: IOPS=27, BW=438KiB/s (448kB/s)(6256KiB/14288msec) clat (usec): min=36, max=62109, avg=19689.87, stdev=11141.91 lat (usec): min=37, max=62111, avg=19690.60, stdev=11141.91 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 153], 10.00th=[ 8455], 20.00th=[11469], | 30.00th=[13698], 40.00th=[16057], 50.00th=[18482], 60.00th=[21627], | 70.00th=[23987], 80.00th=[27395], 90.00th=[33424], 95.00th=[40109], | 99.00th=[55837], 99.50th=[56361], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 287, max= 608, per=28.09%, avg=441.86, stdev=80.02, samples=28 iops : min= 17, max= 38, avg=27.00, stdev= 5.15, samples=28 write: IOPS=26, BW=422KiB/s (432kB/s)(6032KiB/14288msec); 0 zone resets clat (usec): min=990, max=83903, avg=17259.66, stdev=13257.19 lat (usec): min=991, max=83906, avg=17260.76, stdev=13257.29 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 3228], 10.00th=[ 4015], 20.00th=[ 5276], | 30.00th=[ 7439], 40.00th=[11207], 50.00th=[14484], 60.00th=[18220], | 70.00th=[22676], 80.00th=[27395], 90.00th=[33817], 95.00th=[42730], | 99.00th=[66323], 99.50th=[80217], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 159, max= 670, per=25.31%, avg=418.89, stdev=138.70, samples=28 iops : min= 9, max= 41, avg=25.57, stdev= 8.66, samples=28 lat (usec) : 50=0.13%, 100=0.91%, 250=2.73%, 500=0.52%, 1000=0.13% lat (msec) : 2=1.04%, 4=3.91%, 10=16.02%, 20=35.16%, 50=37.50% lat (msec) : 100=1.95% cpu : usr=0.08%, sys=26.49%, ctx=2716, 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=193387: Thu Apr 30 12:29:13 2026 read: IOPS=25, BW=407KiB/s (416kB/s)(6032KiB/14837msec) clat (usec): min=49, max=96109, avg=20827.65, stdev=13598.75 lat (usec): min=50, max=96109, avg=20828.36, stdev=13598.80 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 153], 10.00th=[ 8225], 20.00th=[11469], | 30.00th=[13698], 40.00th=[16188], 50.00th=[19530], 60.00th=[22152], | 70.00th=[24511], 80.00th=[28181], 90.00th=[35390], 95.00th=[45876], | 99.00th=[69731], 99.50th=[87557], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 223, max= 608, per=25.72%, avg=404.62, stdev=102.28, samples=29 iops : min= 13, max= 38, avg=24.66, stdev= 6.50, samples=29 write: IOPS=26, BW=422KiB/s (432kB/s)(6256KiB/14837msec); 0 zone resets clat (usec): min=1097, max=91493, avg=17688.17, stdev=12952.18 lat (usec): min=1098, max=91496, avg=17689.35, stdev=12952.26 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 3392], 10.00th=[ 4293], 20.00th=[ 5932], | 30.00th=[ 9372], 40.00th=[11994], 50.00th=[13960], 60.00th=[16712], | 70.00th=[23462], 80.00th=[28443], 90.00th=[35390], 95.00th=[42730], | 99.00th=[54789], 99.50th=[59507], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 191, max= 704, per=25.50%, avg=422.07, stdev=131.74, samples=29 iops : min= 11, max= 44, avg=25.76, stdev= 8.32, samples=29 lat (usec) : 50=0.13%, 100=0.65%, 250=2.99%, 500=0.52%, 1000=0.13% lat (msec) : 2=0.78%, 4=3.26%, 10=16.15%, 20=33.85%, 50=38.67% lat (msec) : 100=2.86% cpu : usr=0.03%, sys=26.51%, ctx=2771, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1574KiB/s (1612kB/s), 386KiB/s-438KiB/s (395kB/s-448kB/s), io=23.4MiB (24.5MB), run=14288-15219msec WRITE: bw=1656KiB/s (1696kB/s), 418KiB/s-440KiB/s (428kB/s-450kB/s), io=24.6MiB (25.8MB), run=14288-15219msec rand-rw: (groupid=0, jobs=1): err= 0: pid=193382: Thu Apr 30 12:29:17 2026 read: IOPS=20, BW=320KiB/s (328kB/s)(5920KiB/18480msec) clat (usec): min=5271, max=95462, avg=20558.40, stdev=16027.15 lat (usec): min=5272, max=95464, avg=20560.15, stdev=16027.20 clat percentiles (usec): | 1.00th=[ 5932], 5.00th=[ 6915], 10.00th=[ 8029], 20.00th=[ 9110], | 30.00th=[10290], 40.00th=[11600], 50.00th=[13829], 60.00th=[17171], | 70.00th=[22152], 80.00th=[31327], 90.00th=[43779], 95.00th=[55313], | 99.00th=[78119], 99.50th=[92799], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 159, max= 766, per=24.06%, avg=308.17, stdev=156.92, samples=36 iops : min= 9, max= 47, avg=18.64, stdev= 9.91, samples=36 write: IOPS=21, BW=345KiB/s (353kB/s)(6368KiB/18480msec); 0 zone resets clat (msec): min=8, max=106, avg=27.23, stdev=16.29 lat (msec): min=8, max=106, avg=27.23, stdev=16.29 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 39], 90.00th=[ 49], 95.00th=[ 59], | 99.00th=[ 92], 99.50th=[ 104], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 63, max= 736, per=25.11%, avg=338.42, stdev=152.99, samples=36 iops : min= 3, max= 46, avg=20.56, stdev= 9.66, samples=36 lat (msec) : 10=13.80%, 20=41.28%, 50=36.98%, 100=7.68%, 250=0.26% cpu : usr=0.06%, sys=11.49%, ctx=1616, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193384: Thu Apr 30 12:29:17 2026 read: IOPS=19, BW=307KiB/s (315kB/s)(5744KiB/18685msec) clat (msec): min=3, max=100, avg=20.25, stdev=15.22 lat (msec): min=3, max=100, avg=20.26, stdev=15.22 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 31], 90.00th=[ 43], 95.00th=[ 54], | 99.00th=[ 71], 99.50th=[ 84], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 125, max= 736, per=23.85%, avg=305.57, stdev=162.99, samples=37 iops : min= 7, max= 46, avg=18.51, stdev=10.31, samples=37 write: IOPS=21, BW=350KiB/s (359kB/s)(6544KiB/18685msec); 0 zone resets clat (msec): min=7, max=119, avg=27.77, stdev=17.96 lat (msec): min=7, max=119, avg=27.77, stdev=17.96 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 53], 95.00th=[ 64], | 99.00th=[ 90], 99.50th=[ 109], 99.90th=[ 120], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 159, max= 896, per=25.76%, avg=347.22, stdev=175.62, samples=37 iops : min= 9, max= 56, avg=21.11, stdev=11.11, samples=37 lat (msec) : 4=0.13%, 10=14.06%, 20=40.76%, 50=35.94%, 100=8.59% lat (msec) : 250=0.52% cpu : usr=0.11%, sys=11.23%, ctx=1645, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193386: Thu Apr 30 12:29:17 2026 read: IOPS=20, BW=335KiB/s (343kB/s)(6256KiB/18678msec) clat (msec): min=4, max=105, avg=21.23, stdev=16.53 lat (msec): min=4, max=105, avg=21.23, stdev=16.53 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 47], 95.00th=[ 55], | 99.00th=[ 85], 99.50th=[ 96], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 127, max= 954, per=26.18%, avg=335.41, stdev=179.28, samples=37 iops : min= 7, max= 59, avg=20.38, stdev=11.32, samples=37 write: IOPS=20, BW=323KiB/s (331kB/s)(6032KiB/18678msec); 0 zone resets clat (usec): min=7193, max=91223, avg=27248.93, stdev=15632.63 lat (usec): min=7194, max=91225, avg=27250.81, stdev=15632.58 clat percentiles (usec): | 1.00th=[ 8848], 5.00th=[10683], 10.00th=[12125], 20.00th=[13829], | 30.00th=[15795], 40.00th=[18220], 50.00th=[22152], 60.00th=[27919], | 70.00th=[33162], 80.00th=[39584], 90.00th=[50594], 95.00th=[57410], | 99.00th=[73925], 99.50th=[82314], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 159, max= 800, per=23.66%, avg=318.97, stdev=156.45, samples=37 iops : min= 9, max= 50, avg=19.35, stdev= 9.94, samples=37 lat (msec) : 10=14.06%, 20=39.97%, 50=36.85%, 100=8.98%, 250=0.13% cpu : usr=0.11%, sys=11.55%, ctx=1684, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193388: Thu Apr 30 12:29:17 2026 read: IOPS=20, BW=323KiB/s (330kB/s)(6032KiB/18693msec) clat (msec): min=4, max=119, avg=21.07, stdev=17.17 lat (msec): min=4, max=119, avg=21.08, stdev=17.17 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 43], 95.00th=[ 57], | 99.00th=[ 84], 99.50th=[ 101], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 95, max= 800, per=24.85%, avg=318.35, stdev=175.73, samples=37 iops : min= 5, max= 50, avg=19.30, stdev=11.24, samples=37 write: IOPS=20, BW=335KiB/s (343kB/s)(6256KiB/18693msec); 0 zone resets clat (msec): min=8, max=121, avg=27.25, stdev=16.48 lat (msec): min=8, max=121, avg=27.26, stdev=16.48 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 48], 95.00th=[ 58], | 99.00th=[ 86], 99.50th=[ 114], 99.90th=[ 122], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 159, max= 798, per=24.68%, avg=332.65, stdev=169.52, samples=37 iops : min= 9, max= 49, avg=20.22, stdev=10.65, samples=37 lat (msec) : 10=14.58%, 20=39.58%, 50=37.76%, 100=7.42%, 250=0.65% cpu : usr=0.09%, sys=11.34%, ctx=1629, 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=1281KiB/s (1312kB/s), 307KiB/s-335KiB/s (315kB/s-343kB/s), io=23.4MiB (24.5MB), run=18480-18693msec WRITE: bw=1348KiB/s (1380kB/s), 323KiB/s-350KiB/s (331kB/s-359kB/s), io=24.6MiB (25.8MB), run=18480-18693msec 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=193401: Thu Apr 30 12:29:25 2026 read: IOPS=2, BW=2787KiB/s (2854kB/s)(7168KiB/2572msec) clat (usec): min=472, max=144462, avg=111655.22, stdev=49726.94 lat (usec): min=472, max=144463, avg=111656.31, stdev=49727.27 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[115868], | 30.00th=[128451], 40.00th=[128451], 50.00th=[128451], 60.00th=[130548], | 70.00th=[130548], 80.00th=[132645], 90.00th=[143655], 95.00th=[143655], | 99.00th=[143655], 99.50th=[143655], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 2048, max= 5314, per=53.63%, avg=3805.67, stdev=1647.21, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1991KiB/s (2038kB/s)(5120KiB/2572msec); 0 zone resets clat (msec): min=116, max=1084, avg=328.08, stdev=423.46 lat (msec): min=116, max=1084, avg=328.15, stdev=423.43 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2027, max= 6144, per=41.13%, avg=4085.50, stdev=2911.16, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (usec) : 500=8.33% lat (msec) : 250=83.33%, 2000=8.33% cpu : usr=0.00%, sys=35.15%, ctx=442, 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=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=193402: Thu Apr 30 12:29:25 2026 read: IOPS=0, BW=710KiB/s (727kB/s)(2048KiB/2886msec) clat (msec): min=97, max=164, avg=131.06, stdev=47.79 lat (msec): min=97, max=164, avg=131.06, stdev=47.79 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 97], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 165], 95.00th=[ 165], | 99.00th=[ 165], 99.50th=[ 165], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 1783, max= 2048, per=26.99%, avg=1915.50, stdev=187.38, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3548KiB/s (3633kB/s)(10.0MiB/2886msec); 0 zone resets clat (msec): min=44, max=635, avg=250.54, stdev=217.27 lat (msec): min=44, max=635, avg=250.61, stdev=217.27 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 63], | 30.00th=[ 111], 40.00th=[ 123], 50.00th=[ 138], 60.00th=[ 167], | 70.00th=[ 220], 80.00th=[ 426], 90.00th=[ 584], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 2048, max= 8110, per=54.70%, avg=5434.00, stdev=3092.74, samples=3 iops : min= 2, max= 7, avg= 5.00, stdev= 2.65, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=50.00%, 500=8.33%, 750=16.67% cpu : usr=0.03%, sys=31.30%, ctx=309, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193403: Thu Apr 30 12:29:25 2026 read: IOPS=2, BW=2146KiB/s (2198kB/s)(6144KiB/2863msec) clat (usec): min=489, max=782699, avg=165842.61, stdev=309561.53 lat (usec): min=491, max=782700, avg=165843.63, stdev=309561.51 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 553], | 30.00th=[ 553], 40.00th=[ 840], 50.00th=[ 840], 60.00th=[ 36439], | 70.00th=[173016], 80.00th=[173016], 90.00th=[784335], 95.00th=[784335], | 99.00th=[784335], 99.50th=[784335], 99.90th=[784335], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 4096, max= 4096, per=57.72%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2146KiB/s (2198kB/s)(6144KiB/2863msec); 0 zone resets clat (msec): min=84, max=949, avg=283.61, stdev=328.49 lat (msec): min=84, max=949, avg=283.67, stdev=328.50 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 2048, max= 3465, per=25.37%, avg=2520.33, stdev=818.11, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=41.67%, 1000=16.67% cpu : usr=0.03%, sys=25.40%, ctx=198, 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=193404: Thu Apr 30 12:29:25 2026 read: IOPS=1, BW=1846KiB/s (1890kB/s)(5120KiB/2774msec) clat (usec): min=379, max=1032.4k, avg=225506.64, stdev=452878.35 lat (usec): min=379, max=1032.4k, avg=225507.41, stdev=452878.14 clat percentiles (usec): | 1.00th=[ 379], 5.00th=[ 379], 10.00th=[ 379], | 20.00th=[ 379], 30.00th=[ 465], 40.00th=[ 465], | 50.00th=[ 635], 60.00th=[ 635], 70.00th=[ 93848], | 80.00th=[ 93848], 90.00th=[1035994], 95.00th=[1035994], | 99.00th=[1035994], 99.50th=[1035994], 99.90th=[1035994], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 2048, max= 6144, per=57.72%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2584KiB/s (2646kB/s)(7168KiB/2774msec); 0 zone resets clat (msec): min=79, max=568, avg=232.23, stdev=182.37 lat (msec): min=79, max=568, avg=232.29, stdev=182.38 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 82], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 140], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 347], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1738, max= 4055, per=24.89%, avg=2472.25, stdev=1065.24, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 100=25.00%, 250=16.67%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=26.18%, ctx=395, 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=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=7096KiB/s (7267kB/s), 710KiB/s-2787KiB/s (727kB/s-2854kB/s), io=20.0MiB (20.0MB), run=2572-2886msec WRITE: bw=9935KiB/s (10.2MB/s), 1991KiB/s-3548KiB/s (2038kB/s-3633kB/s), io=28.0MiB (29.4MB), run=2572-2886msec rand-rw: (groupid=0, jobs=1): err= 0: pid=193397: Thu Apr 30 12:29:25 2026 read: IOPS=2, BW=2788KiB/s (2855kB/s)(7168KiB/2571msec) clat (msec): min=46, max=187, avg=78.45, stdev=49.39 lat (msec): min=46, max=187, avg=78.45, stdev=49.39 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 47], | 30.00th=[ 56], 40.00th=[ 56], 50.00th=[ 67], 60.00th=[ 73], | 70.00th=[ 73], 80.00th=[ 74], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 1872, max= 6815, per=58.03%, avg=3578.33, stdev=2804.42, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 write: IOPS=1, BW=1991KiB/s (2039kB/s)(5120KiB/2571msec); 0 zone resets clat (msec): min=103, max=1196, avg=389.68, stdev=463.33 lat (msec): min=103, max=1196, avg=389.75, stdev=463.33 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 140], 60.00th=[ 140], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1703, max= 3744, per=28.94%, avg=2498.33, stdev=1092.48, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=16.67%, 100=33.33%, 250=33.33%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.80%, ctx=110, 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=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=193398: Thu Apr 30 12:29:25 2026 read: IOPS=0, BW=627KiB/s (642kB/s)(2048KiB/3266msec) clat (msec): min=56, max=929, avg=493.00, stdev=616.61 lat (msec): min=56, max=929, avg=493.00, stdev=616.61 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=[ 927], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1759, max= 2043, per=30.83%, avg=1901.00, stdev=200.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3135KiB/s (3211kB/s)(10.0MiB/3266msec); 0 zone resets clat (msec): min=50, max=659, avg=225.83, stdev=180.67 lat (msec): min=50, max=659, avg=225.89, stdev=180.68 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 80], | 30.00th=[ 82], 40.00th=[ 85], 50.00th=[ 222], 60.00th=[ 230], | 70.00th=[ 259], 80.00th=[ 271], 90.00th=[ 321], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1872, max= 6144, per=45.26%, avg=3907.50, stdev=1763.75, samples=4 iops : min= 1, max= 6, avg= 3.50, stdev= 2.08, samples=4 lat (msec) : 100=41.67%, 250=16.67%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=15.19%, ctx=179, 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=193399: Thu Apr 30 12:29:25 2026 read: IOPS=1, BW=1850KiB/s (1894kB/s)(6144KiB/3321msec) clat (msec): min=52, max=792, avg=262.50, stdev=293.32 lat (msec): min=52, max=792, avg=262.51, stdev=293.32 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 75], | 30.00th=[ 75], 40.00th=[ 109], 50.00th=[ 109], 60.00th=[ 123], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 2043, max= 3744, per=42.36%, avg=2611.67, stdev=980.63, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1850KiB/s (1894kB/s)(6144KiB/3321msec); 0 zone resets clat (msec): min=40, max=949, avg=288.47, stdev=337.24 lat (msec): min=40, max=949, avg=288.54, stdev=337.23 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 41], 10.00th=[ 41], 20.00th=[ 54], | 30.00th=[ 54], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 239], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1872, max= 3424, per=27.18%, avg=2346.75, stdev=722.81, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=16.67%, 1000=16.67% cpu : usr=0.03%, sys=5.60%, ctx=61, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193400: Thu Apr 30 12:29:25 2026 read: IOPS=1, BW=1559KiB/s (1596kB/s)(5120KiB/3285msec) clat (msec): min=35, max=942, avg=309.34, stdev=379.33 lat (msec): min=35, max=942, avg=309.34, stdev=379.33 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 35], 10.00th=[ 35], 20.00th=[ 35], | 30.00th=[ 63], 40.00th=[ 63], 50.00th=[ 126], 60.00th=[ 126], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 2043, max= 6144, per=66.39%, avg=4093.50, stdev=2899.84, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2182KiB/s (2234kB/s)(7168KiB/3285msec); 0 zone resets clat (msec): min=52, max=678, avg=244.63, stdev=214.83 lat (msec): min=52, max=678, avg=244.91, stdev=214.88 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 55], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 255], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 288], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1802, max= 3744, per=29.32%, avg=2531.33, stdev=1057.38, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=16.67%, 500=33.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.09%, sys=11.33%, ctx=208, 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=6167KiB/s (6315kB/s), 627KiB/s-2788KiB/s (642kB/s-2855kB/s), io=20.0MiB (20.0MB), run=2571-3321msec WRITE: bw=8634KiB/s (8841kB/s), 1850KiB/s-3135KiB/s (1894kB/s-3211kB/s), io=28.0MiB (29.4MB), run=2571-3321msec 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=193414: Thu Apr 30 12:29:32 2026 read: IOPS=1, BW=5699KiB/s (5836kB/s)(12.0MiB/2156msec) clat (msec): min=615, max=772, avg=711.83, stdev=84.78 lat (msec): min=615, max=772, avg=711.83, stdev=84.78 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=14.34%, ctx=58, 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=193415: Thu Apr 30 12:29:32 2026 read: IOPS=0, BW=1577KiB/s (1614kB/s)(4096KiB/2598msec) clat (nsec): min=497469k, max=497469k, avg=497468638.00, stdev= 0.00 lat (nsec): min=497471k, max=497471k, avg=497470725.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 5505, max= 5505, per=87.30%, avg=5505.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3153KiB/s (3229kB/s)(8192KiB/2598msec); 0 zone resets clat (msec): min=684, max=1387, avg=1036.28, stdev=497.30 lat (msec): min=684, max=1388, avg=1036.56, stdev=497.45 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7728, max= 7728, per=61.27%, avg=7728.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.08%, sys=11.63%, ctx=90, 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=193416: Thu Apr 30 12:29:32 2026 write: IOPS=1, BW=4999KiB/s (5119kB/s)(12.0MiB/2458msec); 0 zone resets clat (msec): min=290, max=1089, avg=800.19, stdev=442.79 lat (msec): min=290, max=1089, avg=800.62, stdev=442.80 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7728, max= 8192, per=63.11%, avg=7960.00, stdev=328.10, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.12%, sys=16.52%, ctx=128, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193417: Thu Apr 30 12:29:32 2026 write: IOPS=1, BW=5777KiB/s (5916kB/s)(12.0MiB/2127msec); 0 zone resets clat (msec): min=265, max=1001, avg=700.10, stdev=385.41 lat (msec): min=266, max=1002, avg=700.46, stdev=385.28 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8192, max= 8192, per=64.95%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.05%, sys=18.96%, ctx=94, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6306KiB/s (6458kB/s), 1577KiB/s-5699KiB/s (1614kB/s-5836kB/s), io=16.0MiB (16.8MB), run=2156-2598msec WRITE: bw=12.3MiB/s (12.9MB/s), 3153KiB/s-5777KiB/s (3229kB/s-5916kB/s), io=32.0MiB (33.6MB), run=2127-2598msec rand-rw: (groupid=0, jobs=1): err= 0: pid=193410: Thu Apr 30 12:29:32 2026 read: IOPS=1, BW=6923KiB/s (7089kB/s)(12.0MiB/1775msec) clat (msec): min=443, max=710, avg=584.28, stdev=133.75 lat (msec): min=443, max=710, avg=584.28, stdev=133.75 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 5696, max= 8126, per=100.00%, avg=6911.00, stdev=1718.27, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=51.58%, ctx=1495, 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=193411: Thu Apr 30 12:29:32 2026 read: IOPS=0, BW=1473KiB/s (1509kB/s)(4096KiB/2780msec) clat (nsec): min=443976k, max=443976k, avg=443975734.00, stdev= 0.00 lat (nsec): min=443978k, max=443978k, avg=443978199.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 5468, max= 5468, per=92.79%, avg=5468.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2947KiB/s (3017kB/s)(8192KiB/2780msec); 0 zone resets clat (msec): min=433, max=1849, avg=1141.69, stdev=1000.85 lat (msec): min=434, max=1849, avg=1142.08, stdev=1000.73 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 435], 50.00th=[ 435], 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= 8192, max= 8192, per=69.50%, 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%, 2000=33.33% cpu : usr=0.00%, sys=15.29%, ctx=549, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193412: Thu Apr 30 12:29:32 2026 write: IOPS=1, BW=4485KiB/s (4592kB/s)(12.0MiB/2740msec); 0 zone resets clat (msec): min=247, max=1460, avg=896.15, stdev=610.70 lat (msec): min=248, max=1461, avg=896.54, stdev=610.91 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8192, max= 8192, per=69.50%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.40%, ctx=80, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=193413: Thu Apr 30 12:29:32 2026 write: IOPS=1, BW=6526KiB/s (6682kB/s)(12.0MiB/1883msec); 0 zone resets clat (msec): min=573, max=688, avg=617.03, stdev=62.11 lat (msec): min=574, max=688, avg=617.42, stdev=62.11 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 6014, max= 8192, per=60.26%, avg=7103.00, stdev=1540.08, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=25.93%, ctx=111, 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=5894KiB/s (6035kB/s), 1473KiB/s-6923KiB/s (1509kB/s-7089kB/s), io=16.0MiB (16.8MB), run=1775-2780msec WRITE: bw=11.5MiB/s (12.1MB/s), 2947KiB/s-6526KiB/s (3017kB/s-6682kB/s), io=32.0MiB (33.6MB), run=1883-2780msec