== sanity test 398b: DIO and buffer IO race ============== 15:53:57 (1778356437) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.49197 s, 20.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=159172: Sat May 9 15:55:06 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(5992KiB/58876msec) clat (usec): min=30, max=713057, avg=21213.06, stdev=21528.32 lat (usec): min=31, max=713058, avg=21213.60, stdev=21528.33 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 6063], 10.00th=[ 8356], 20.00th=[ 11076], | 30.00th=[ 13829], 40.00th=[ 16188], 50.00th=[ 18744], 60.00th=[ 21890], | 70.00th=[ 25035], 80.00th=[ 29492], 90.00th=[ 35390], 95.00th=[ 41681], | 99.00th=[ 57410], 99.50th=[ 73925], 99.90th=[121111], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 231, per=25.13%, avg=101.29, stdev=41.52, samples=117 iops : min= 1, max= 57, avg=24.87, stdev=10.41, samples=117 write: IOPS=26, BW=107KiB/s (110kB/s)(6296KiB/58876msec); 0 zone resets clat (usec): min=725, max=91037, avg=17039.78, stdev=13054.72 lat (usec): min=726, max=91038, avg=17040.48, stdev=13054.71 clat percentiles (usec): | 1.00th=[ 807], 5.00th=[ 2704], 10.00th=[ 3556], 20.00th=[ 5669], | 30.00th=[ 7767], 40.00th=[10945], 50.00th=[14222], 60.00th=[17695], | 70.00th=[21365], 80.00th=[26346], 90.00th=[35390], 95.00th=[42730], | 99.00th=[57934], 99.50th=[66847], 99.90th=[78119], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 8, max= 288, per=25.43%, avg=107.33, stdev=44.56, samples=116 iops : min= 2, max= 72, avg=26.39, stdev=11.19, samples=116 lat (usec) : 50=0.07%, 100=0.39%, 250=0.85%, 500=0.29%, 750=0.10% lat (usec) : 1000=0.68% lat (msec) : 2=0.42%, 4=5.01%, 10=18.85%, 20=34.18%, 50=37.21% lat (msec) : 100=1.86%, 250=0.07%, 750=0.03% cpu : usr=0.06%, sys=29.71%, ctx=10070, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=159174: Sat May 9 15:55:06 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(5940KiB/59012msec) clat (usec): min=35, max=94611, avg=21087.53, stdev=12103.86 lat (usec): min=35, max=94612, avg=21088.13, stdev=12103.92 clat percentiles (usec): | 1.00th=[ 131], 5.00th=[ 7046], 10.00th=[ 8586], 20.00th=[10945], | 30.00th=[13698], 40.00th=[16057], 50.00th=[18744], 60.00th=[21890], | 70.00th=[25297], 80.00th=[29754], 90.00th=[36439], 95.00th=[43254], | 99.00th=[62653], 99.50th=[65799], 99.90th=[92799], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 7, max= 192, per=24.76%, avg=99.77, stdev=40.25, samples=117 iops : min= 1, max= 48, avg=24.50, stdev=10.15, samples=117 write: IOPS=26, BW=108KiB/s (110kB/s)(6348KiB/59012msec); 0 zone resets clat (usec): min=730, max=711832, avg=17281.25, stdev=21725.71 lat (usec): min=730, max=711833, avg=17283.66, stdev=21726.53 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 2671], 10.00th=[ 3359], 20.00th=[ 5538], | 30.00th=[ 7701], 40.00th=[ 10552], 50.00th=[ 13960], 60.00th=[ 17433], | 70.00th=[ 21365], 80.00th=[ 26608], 90.00th=[ 34866], 95.00th=[ 42206], | 99.00th=[ 56361], 99.50th=[ 64750], 99.90th=[ 96994], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 31, max= 271, per=25.37%, avg=107.05, stdev=44.55, samples=116 iops : min= 7, max= 67, avg=26.32, stdev=11.24, samples=116 lat (usec) : 50=0.07%, 100=0.26%, 250=0.55%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.39% lat (msec) : 2=0.72%, 4=5.86%, 10=19.11%, 20=33.11%, 50=37.57% lat (msec) : 100=2.12%, 750=0.03% cpu : usr=0.07%, sys=29.34%, ctx=10039, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=159176: Sat May 9 15:55:06 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(6028KiB/58683msec) clat (usec): min=29, max=90618, avg=20579.56, stdev=12086.21 lat (usec): min=30, max=90619, avg=20580.93, stdev=12086.98 clat percentiles (usec): | 1.00th=[ 121], 5.00th=[ 6325], 10.00th=[ 8029], 20.00th=[10814], | 30.00th=[13566], 40.00th=[15795], 50.00th=[18220], 60.00th=[21365], | 70.00th=[24511], 80.00th=[29230], 90.00th=[35914], 95.00th=[43254], | 99.00th=[62129], 99.50th=[71828], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 16, max= 223, per=25.54%, avg=102.94, stdev=41.55, samples=115 iops : min= 4, max= 55, avg=25.29, stdev=10.45, samples=115 write: IOPS=26, BW=107KiB/s (109kB/s)(6260KiB/58683msec); 0 zone resets clat (usec): min=796, max=741926, avg=17494.57, stdev=22272.26 lat (usec): min=796, max=741927, avg=17495.30, stdev=22272.29 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 2802], 10.00th=[ 3392], 20.00th=[ 5473], | 30.00th=[ 7898], 40.00th=[ 11338], 50.00th=[ 14353], 60.00th=[ 17695], | 70.00th=[ 22152], 80.00th=[ 27132], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 56886], 99.50th=[ 62129], 99.90th=[ 90702], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 240, per=25.01%, avg=105.53, stdev=45.14, samples=116 iops : min= 1, max= 60, avg=25.94, stdev=11.35, samples=116 lat (usec) : 50=0.10%, 100=0.23%, 250=0.98%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=0.55%, 4=6.22%, 10=18.42%, 20=33.95%, 50=37.11% lat (msec) : 100=1.95%, 750=0.03% cpu : usr=0.07%, sys=29.38%, ctx=10116, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=159178: Sat May 9 15:55:06 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(6052KiB/59489msec) clat (usec): min=31, max=129350, avg=21025.77, stdev=12503.35 lat (usec): min=32, max=129350, avg=21026.33, stdev=12503.38 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 5407], 10.00th=[ 7767], 20.00th=[ 10814], | 30.00th=[ 13566], 40.00th=[ 16450], 50.00th=[ 19006], 60.00th=[ 21890], | 70.00th=[ 25822], 80.00th=[ 30278], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 59507], 99.50th=[ 64226], 99.90th=[ 87557], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 8, max= 280, per=25.09%, avg=101.09, stdev=40.25, samples=117 iops : min= 2, max= 70, avg=24.83, stdev=10.13, samples=117 write: IOPS=26, BW=105KiB/s (107kB/s)(6236KiB/59489msec); 0 zone resets clat (usec): min=739, max=753467, avg=17573.40, stdev=22722.93 lat (usec): min=739, max=753467, avg=17574.74, stdev=22722.73 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 2606], 10.00th=[ 3326], 20.00th=[ 5669], | 30.00th=[ 7832], 40.00th=[ 10814], 50.00th=[ 14222], 60.00th=[ 17957], | 70.00th=[ 22152], 80.00th=[ 27395], 90.00th=[ 34341], 95.00th=[ 42206], | 99.00th=[ 56361], 99.50th=[ 68682], 99.90th=[ 92799], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 14, max= 280, per=24.52%, avg=103.46, stdev=44.80, samples=118 iops : min= 3, max= 70, avg=25.42, stdev=11.26, samples=118 lat (usec) : 50=0.10%, 100=0.49%, 250=1.07%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.39% lat (msec) : 2=0.98%, 4=5.63%, 10=18.72%, 20=32.10%, 50=37.86% lat (msec) : 100=2.54%, 250=0.03%, 1000=0.03% cpu : usr=0.08%, sys=28.92%, ctx=10083, 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=404KiB/s (413kB/s), 101KiB/s-103KiB/s (103kB/s-105kB/s), io=23.4MiB (24.6MB), run=58683-59489msec WRITE: bw=423KiB/s (433kB/s), 105KiB/s-108KiB/s (107kB/s-110kB/s), io=24.6MiB (25.7MB), run=58683-59489msec rand-rw: (groupid=0, jobs=1): err= 0: pid=159171: Sat May 9 15:55:26 2026 read: IOPS=19, BW=76.4KiB/s (78.3kB/s)(5992KiB/78399msec) clat (msec): min=2, max=726, avg=17.62, stdev=23.11 lat (msec): min=2, max=726, avg=17.62, stdev=23.11 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 47], | 99.00th=[ 65], 99.50th=[ 81], 99.90th=[ 107], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8, max= 232, per=25.29%, avg=76.63, stdev=43.43, samples=155 iops : min= 2, max= 58, avg=18.77, stdev=11.04, samples=155 write: IOPS=20, BW=80.3KiB/s (82.2kB/s)(6296KiB/78399msec); 0 zone resets clat (msec): min=13, max=154, avg=32.87, stdev=17.02 lat (msec): min=13, max=154, avg=32.87, stdev=17.02 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 43], 90.00th=[ 56], 95.00th=[ 67], | 99.00th=[ 96], 99.50th=[ 103], 99.90th=[ 136], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 31, max= 176, per=25.56%, avg=81.04, stdev=38.11, samples=154 iops : min= 7, max= 44, avg=19.87, stdev= 9.74, samples=154 lat (msec) : 4=2.44%, 10=17.58%, 20=24.25%, 50=46.97%, 100=8.37% lat (msec) : 250=0.36%, 750=0.03% cpu : usr=0.08%, sys=13.10%, ctx=6669, 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=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=159173: Sat May 9 15:55:26 2026 read: IOPS=18, BW=75.1KiB/s (76.9kB/s)(5940KiB/79118msec) clat (msec): min=2, max=750, avg=17.98, stdev=25.06 lat (msec): min=2, max=750, avg=17.99, stdev=25.06 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 39], 95.00th=[ 52], | 99.00th=[ 82], 99.50th=[ 89], 99.90th=[ 126], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 240, per=24.79%, avg=75.11, stdev=46.21, samples=156 iops : min= 1, max= 60, avg=18.39, stdev=11.74, samples=156 write: IOPS=20, BW=80.2KiB/s (82.2kB/s)(6348KiB/79118msec); 0 zone resets clat (msec): min=12, max=153, avg=32.85, stdev=17.32 lat (msec): min=12, max=153, avg=32.86, stdev=17.32 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 44], 90.00th=[ 56], 95.00th=[ 68], | 99.00th=[ 91], 99.50th=[ 111], 99.90th=[ 134], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 23, max= 176, per=25.43%, avg=80.61, stdev=40.22, samples=155 iops : min= 5, max= 44, avg=19.77, stdev=10.26, samples=155 lat (msec) : 4=3.45%, 10=17.71%, 20=24.12%, 50=44.37%, 100=9.83% lat (msec) : 250=0.49%, 1000=0.03% cpu : usr=0.07%, sys=12.75%, ctx=6785, 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=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=159175: Sat May 9 15:55:26 2026 read: IOPS=19, BW=76.3KiB/s (78.1kB/s)(6028KiB/79021msec) clat (msec): min=2, max=133, avg=18.04, stdev=15.47 lat (msec): min=2, max=133, avg=18.04, stdev=15.47 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 40], 95.00th=[ 51], | 99.00th=[ 71], 99.50th=[ 80], 99.90th=[ 94], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 15, max= 232, per=25.39%, avg=76.94, stdev=40.44, samples=155 iops : min= 3, max= 58, avg=18.85, stdev=10.33, samples=155 write: IOPS=19, BW=79.2KiB/s (81.1kB/s)(6260KiB/79021msec); 0 zone resets clat (msec): min=12, max=771, avg=32.94, stdev=25.18 lat (msec): min=12, max=771, avg=32.94, stdev=25.18 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 25], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 44], 90.00th=[ 54], 95.00th=[ 66], | 99.00th=[ 95], 99.50th=[ 114], 99.90th=[ 148], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 176, per=25.02%, avg=79.31, stdev=40.55, samples=156 iops : min= 1, max= 44, avg=19.44, stdev=10.34, samples=156 lat (msec) : 4=2.47%, 10=17.48%, 20=24.06%, 50=47.14%, 100=8.40% lat (msec) : 250=0.42%, 1000=0.03% cpu : usr=0.06%, sys=13.01%, ctx=6701, 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=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=159177: Sat May 9 15:55:26 2026 read: IOPS=19, BW=76.5KiB/s (78.4kB/s)(6052KiB/79059msec) clat (usec): min=2666, max=98027, avg=17779.09, stdev=15718.07 lat (usec): min=2667, max=98028, avg=17779.84, stdev=15718.06 clat percentiles (usec): | 1.00th=[ 3032], 5.00th=[ 3818], 10.00th=[ 4686], 20.00th=[ 6063], | 30.00th=[ 7701], 40.00th=[ 9372], 50.00th=[12256], 60.00th=[15926], | 70.00th=[19792], 80.00th=[27132], 90.00th=[38011], 95.00th=[53216], | 99.00th=[72877], 99.50th=[80217], 99.90th=[96994], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 7, max= 224, per=25.46%, avg=77.15, stdev=44.42, samples=155 iops : min= 1, max= 56, avg=18.90, stdev=11.29, samples=155 write: IOPS=19, BW=78.9KiB/s (80.8kB/s)(6236KiB/79059msec); 0 zone resets clat (msec): min=12, max=758, avg=33.28, stdev=25.09 lat (msec): min=12, max=758, avg=33.28, stdev=25.09 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 44], 90.00th=[ 55], 95.00th=[ 66], | 99.00th=[ 95], 99.50th=[ 117], 99.90th=[ 144], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 176, per=24.89%, avg=78.92, stdev=39.25, samples=156 iops : min= 1, max= 44, avg=19.34, stdev=10.03, samples=156 lat (msec) : 4=2.90%, 10=18.13%, 20=24.19%, 50=44.79%, 100=9.60% lat (msec) : 250=0.36%, 1000=0.03% cpu : usr=0.07%, sys=13.02%, ctx=6762, 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=303KiB/s (311kB/s), 75.1KiB/s-76.5KiB/s (76.9kB/s-78.4kB/s), io=23.4MiB (24.6MB), run=78399-79118msec WRITE: bw=318KiB/s (325kB/s), 78.9KiB/s-80.3KiB/s (80.8kB/s-82.2kB/s), io=24.6MiB (25.7MB), run=78399-79118msec 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=159209: Sat May 9 15:55:50 2026 read: IOPS=20, BW=320KiB/s (328kB/s)(5920KiB/18482msec) clat (usec): min=33, max=91958, avg=24578.60, stdev=14756.98 lat (usec): min=34, max=91958, avg=24579.10, stdev=14757.02 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 169], 10.00th=[ 8356], 20.00th=[13042], | 30.00th=[15926], 40.00th=[18744], 50.00th=[22676], 60.00th=[26346], | 70.00th=[31065], 80.00th=[35914], 90.00th=[44303], 95.00th=[51643], | 99.00th=[64750], 99.50th=[72877], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 174, max= 638, per=24.18%, avg=313.19, stdev=116.95, samples=36 iops : min= 10, max= 39, avg=19.03, stdev= 7.33, samples=36 write: IOPS=21, BW=345KiB/s (353kB/s)(6368KiB/18482msec); 0 zone resets clat (usec): min=1118, max=78895, avg=23183.87, stdev=14616.11 lat (usec): min=1119, max=78896, avg=23184.76, stdev=14616.14 clat percentiles (usec): | 1.00th=[ 2507], 5.00th=[ 4752], 10.00th=[ 6980], 20.00th=[10290], | 30.00th=[13173], 40.00th=[16909], 50.00th=[20841], 60.00th=[24249], | 70.00th=[28967], 80.00th=[35914], 90.00th=[42730], 95.00th=[51119], | 99.00th=[69731], 99.50th=[77071], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 63, max= 702, per=25.07%, avg=341.69, stdev=141.07, samples=36 iops : min= 3, max= 43, avg=20.83, stdev= 8.88, samples=36 lat (usec) : 50=0.26%, 100=0.26%, 250=3.12%, 500=0.26% lat (msec) : 2=0.26%, 4=1.17%, 10=11.72%, 20=27.60%, 50=49.61% lat (msec) : 100=5.73% cpu : usr=0.04%, sys=30.30%, ctx=3067, 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=159210: Sat May 9 15:55:50 2026 read: IOPS=19, BW=312KiB/s (319kB/s)(5744KiB/18412msec) clat (usec): min=33, max=90883, avg=25443.96, stdev=14070.46 lat (usec): min=33, max=90883, avg=25444.54, stdev=14070.42 clat percentiles (usec): | 1.00th=[ 95], 5.00th=[ 233], 10.00th=[10945], 20.00th=[14746], | 30.00th=[17957], 40.00th=[20841], 50.00th=[23462], 60.00th=[26608], | 70.00th=[30016], 80.00th=[35914], 90.00th=[44303], 95.00th=[51643], | 99.00th=[68682], 99.50th=[74974], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 95, max= 672, per=23.90%, avg=309.56, stdev=121.45, samples=36 iops : min= 5, max= 42, avg=18.81, stdev= 7.66, samples=36 write: IOPS=22, BW=355KiB/s (364kB/s)(6544KiB/18412msec); 0 zone resets clat (usec): min=1187, max=90535, avg=22596.76, stdev=15003.17 lat (usec): min=1187, max=90536, avg=22597.69, stdev=15003.26 clat percentiles (usec): | 1.00th=[ 2671], 5.00th=[ 4948], 10.00th=[ 6718], 20.00th=[ 9503], | 30.00th=[12518], 40.00th=[15664], 50.00th=[19006], 60.00th=[22676], | 70.00th=[28705], 80.00th=[33817], 90.00th=[45351], 95.00th=[51643], | 99.00th=[66323], 99.50th=[70779], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 191, max= 733, per=25.59%, avg=348.75, stdev=114.39, samples=36 iops : min= 11, max= 45, avg=21.28, stdev= 7.10, samples=36 lat (usec) : 50=0.13%, 100=0.39%, 250=1.95%, 500=0.26% lat (msec) : 2=0.65%, 4=0.52%, 10=11.72%, 20=29.69%, 50=49.48% lat (msec) : 100=5.21% cpu : usr=0.04%, sys=31.10%, ctx=3177, 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=159211: Sat May 9 15:55:50 2026 read: IOPS=22, BW=357KiB/s (365kB/s)(6256KiB/17532msec) clat (usec): min=36, max=89077, avg=23473.71, stdev=15441.54 lat (usec): min=37, max=89077, avg=23474.26, stdev=15441.59 clat percentiles (usec): | 1.00th=[ 68], 5.00th=[ 120], 10.00th=[ 277], 20.00th=[11994], | 30.00th=[15664], 40.00th=[18482], 50.00th=[21627], 60.00th=[25560], | 70.00th=[30016], 80.00th=[33817], 90.00th=[41681], 95.00th=[49021], | 99.00th=[77071], 99.50th=[87557], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 160, max= 860, per=27.92%, avg=361.50, stdev=175.45, samples=34 iops : min= 10, max= 53, avg=22.09, stdev=10.93, samples=34 write: IOPS=21, BW=344KiB/s (352kB/s)(6032KiB/17532msec); 0 zone resets clat (usec): min=1127, max=76457, avg=21713.87, stdev=14954.11 lat (usec): min=1128, max=76458, avg=21714.79, stdev=14954.24 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 4015], 10.00th=[ 4948], 20.00th=[ 8356], | 30.00th=[10421], 40.00th=[15401], 50.00th=[18482], 60.00th=[22938], | 70.00th=[27657], 80.00th=[34341], 90.00th=[41157], 95.00th=[50070], | 99.00th=[70779], 99.50th=[73925], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 127, max= 862, per=25.20%, avg=343.53, stdev=154.18, samples=34 iops : min= 7, max= 53, avg=20.97, stdev= 9.70, samples=34 lat (usec) : 50=0.26%, 100=0.65%, 250=3.78%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.65%, 4=1.95%, 10=13.93%, 20=27.34%, 50=45.96% lat (msec) : 100=4.69% cpu : usr=0.05%, sys=30.35%, ctx=3018, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=159212: Sat May 9 15:55:50 2026 read: IOPS=20, BW=334KiB/s (342kB/s)(6032KiB/18081msec) clat (usec): min=65, max=84803, avg=24595.88, stdev=14598.73 lat (usec): min=66, max=84804, avg=24596.51, stdev=14598.72 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 174], 10.00th=[ 8455], 20.00th=[13698], | 30.00th=[17171], 40.00th=[19530], 50.00th=[22676], 60.00th=[26346], | 70.00th=[31065], 80.00th=[35390], 90.00th=[45876], 95.00th=[51643], | 99.00th=[62129], 99.50th=[76022], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 175, max= 669, per=25.44%, avg=329.46, stdev=130.74, samples=35 iops : min= 10, max= 41, avg=20.06, stdev= 8.17, samples=35 write: IOPS=21, BW=346KiB/s (354kB/s)(6256KiB/18081msec); 0 zone resets clat (usec): min=1090, max=100111, avg=22288.10, stdev=15471.73 lat (usec): min=1091, max=100113, avg=22289.05, stdev=15471.78 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 44], 95.00th=[ 53], | 99.00th=[ 68], 99.50th=[ 72], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 191, max= 798, per=25.44%, avg=346.77, stdev=157.27, samples=35 iops : min= 11, max= 49, avg=21.14, stdev= 9.85, samples=35 lat (usec) : 100=0.65%, 250=2.86%, 500=0.52% lat (msec) : 2=0.39%, 4=1.30%, 10=13.02%, 20=28.52%, 50=47.14% lat (msec) : 100=5.47%, 250=0.13% cpu : usr=0.03%, sys=30.23%, ctx=3050, 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=1296KiB/s (1327kB/s), 312KiB/s-357KiB/s (319kB/s-365kB/s), io=23.4MiB (24.5MB), run=17532-18482msec WRITE: bw=1363KiB/s (1396kB/s), 344KiB/s-355KiB/s (352kB/s-364kB/s), io=24.6MiB (25.8MB), run=17532-18482msec rand-rw: (groupid=0, jobs=1): err= 0: pid=159205: Sat May 9 15:55:56 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(5920KiB/23868msec) clat (msec): min=3, max=126, avg=20.99, stdev=18.28 lat (msec): min=3, max=126, avg=20.99, stdev=18.28 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 59], | 99.00th=[ 95], 99.50th=[ 109], 99.90th=[ 127], 99.95th=[ 127], | 99.99th=[ 127] bw ( KiB/s): min= 95, max= 608, per=24.37%, avg=243.96, stdev=125.76, samples=47 iops : min= 5, max= 38, avg=14.85, stdev= 8.02, samples=47 write: IOPS=16, BW=267KiB/s (273kB/s)(6368KiB/23868msec); 0 zone resets clat (msec): min=16, max=128, avg=40.25, stdev=20.77 lat (msec): min=16, max=128, avg=40.25, stdev=20.77 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 71], 95.00th=[ 85], | 99.00th=[ 122], 99.50th=[ 129], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 127, max= 544, per=25.19%, avg=265.21, stdev=118.52, samples=47 iops : min= 7, max= 34, avg=16.19, stdev= 7.63, samples=47 lat (msec) : 4=1.56%, 10=15.23%, 20=15.36%, 50=52.60%, 100=14.06% lat (msec) : 250=1.17% cpu : usr=0.04%, sys=12.75%, ctx=1922, 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=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=159206: Sat May 9 15:55:56 2026 read: IOPS=15, BW=240KiB/s (246kB/s)(5744KiB/23916msec) clat (usec): min=3311, max=94375, avg=20133.60, stdev=16422.98 lat (usec): min=3312, max=94376, avg=20134.36, stdev=16422.85 clat percentiles (usec): | 1.00th=[ 3589], 5.00th=[ 4113], 10.00th=[ 4752], 20.00th=[ 7046], | 30.00th=[ 8979], 40.00th=[11731], 50.00th=[15926], 60.00th=[19268], | 70.00th=[23200], 80.00th=[30802], 90.00th=[41681], 95.00th=[54789], | 99.00th=[81265], 99.50th=[90702], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 57, max= 608, per=23.86%, avg=238.85, stdev=134.28, samples=47 iops : min= 3, max= 38, avg=14.53, stdev= 8.53, samples=47 write: IOPS=17, BW=274KiB/s (280kB/s)(6544KiB/23916msec); 0 zone resets clat (msec): min=15, max=150, avg=40.65, stdev=21.70 lat (msec): min=15, max=150, avg=40.65, stdev=21.70 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 22], 20.00th=[ 25], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 38], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 70], 95.00th=[ 86], | 99.00th=[ 118], 99.50th=[ 125], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 96, max= 576, per=25.61%, avg=269.70, stdev=120.00, samples=47 iops : min= 6, max= 36, avg=16.47, stdev= 7.72, samples=47 lat (msec) : 4=1.82%, 10=14.06%, 20=15.63%, 50=53.39%, 100=13.54% lat (msec) : 250=1.56% cpu : usr=0.04%, sys=12.98%, ctx=1941, 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=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=159207: Sat May 9 15:55:56 2026 read: IOPS=16, BW=264KiB/s (271kB/s)(6256KiB/23666msec) clat (msec): min=3, max=126, avg=22.02, stdev=19.97 lat (msec): min=3, max=126, avg=22.02, stdev=19.97 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 48], 95.00th=[ 70], | 99.00th=[ 92], 99.50th=[ 101], 99.90th=[ 127], 99.95th=[ 127], | 99.99th=[ 127] bw ( KiB/s): min= 64, max= 864, per=26.49%, avg=265.21, stdev=151.19, samples=47 iops : min= 4, max= 54, avg=16.17, stdev= 9.65, samples=47 write: IOPS=15, BW=255KiB/s (261kB/s)(6032KiB/23666msec); 0 zone resets clat (msec): min=16, max=141, avg=39.70, stdev=18.75 lat (msec): min=16, max=141, avg=39.70, stdev=18.75 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 29], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 39], | 70.00th=[ 44], 80.00th=[ 51], 90.00th=[ 65], 95.00th=[ 81], | 99.00th=[ 105], 99.50th=[ 129], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 96, max= 544, per=24.14%, avg=254.17, stdev=115.38, samples=47 iops : min= 6, max= 34, avg=15.49, stdev= 7.39, samples=47 lat (msec) : 4=1.30%, 10=17.06%, 20=14.32%, 50=52.73%, 100=13.54% lat (msec) : 250=1.04% cpu : usr=0.04%, sys=12.81%, ctx=1804, 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=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=159208: Sat May 9 15:55:56 2026 read: IOPS=15, BW=252KiB/s (258kB/s)(6032KiB/23903msec) clat (msec): min=3, max=118, avg=22.06, stdev=19.76 lat (msec): min=3, max=118, avg=22.06, stdev=19.76 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 33], 90.00th=[ 49], 95.00th=[ 67], | 99.00th=[ 99], 99.50th=[ 112], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 95, max= 640, per=24.99%, avg=250.19, stdev=133.48, samples=47 iops : min= 5, max= 40, avg=15.23, stdev= 8.54, samples=47 write: IOPS=16, BW=262KiB/s (268kB/s)(6256KiB/23903msec); 0 zone resets clat (msec): min=13, max=129, avg=39.81, stdev=19.75 lat (msec): min=13, max=129, avg=39.81, stdev=19.75 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 34], 60.00th=[ 37], | 70.00th=[ 42], 80.00th=[ 52], 90.00th=[ 66], 95.00th=[ 83], | 99.00th=[ 118], 99.50th=[ 129], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 95, max= 512, per=24.60%, avg=259.02, stdev=116.17, samples=47 iops : min= 5, max= 32, avg=15.79, stdev= 7.50, samples=47 lat (msec) : 4=1.43%, 10=14.97%, 20=15.23%, 50=52.86%, 100=14.19% lat (msec) : 250=1.30% cpu : usr=0.04%, sys=13.05%, ctx=1914, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1002KiB/s (1026kB/s), 240KiB/s-264KiB/s (246kB/s-271kB/s), io=23.4MiB (24.5MB), run=23666-23916msec WRITE: bw=1054KiB/s (1079kB/s), 255KiB/s-274KiB/s (261kB/s-280kB/s), io=24.6MiB (25.8MB), run=23666-23916msec 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=159227: Sat May 9 15:56:08 2026 read: IOPS=1, BW=1967KiB/s (2014kB/s)(7168KiB/3645msec) clat (usec): min=746, max=815769, avg=281048.04, stdev=258027.95 lat (usec): min=747, max=815770, avg=281048.86, stdev=258027.96 clat percentiles (usec): | 1.00th=[ 750], 5.00th=[ 750], 10.00th=[ 750], 20.00th=[135267], | 30.00th=[204473], 40.00th=[204473], 50.00th=[223347], 60.00th=[248513], | 70.00th=[248513], 80.00th=[337642], 90.00th=[817890], 95.00th=[817890], | 99.00th=[817890], 99.50th=[817890], 99.90th=[817890], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 1809, max= 4087, per=67.25%, avg=2860.75, stdev=1137.89, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1405KiB/s (1438kB/s)(5120KiB/3645msec); 0 zone resets clat (msec): min=222, max=530, avg=327.54, stdev=125.73 lat (msec): min=222, max=530, avg=327.59, stdev=125.72 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2043, max= 4096, per=45.80%, avg=2727.33, stdev=1185.30, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=49.92%, ctx=776, 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=159228: Sat May 9 15:56:08 2026 read: IOPS=0, BW=431KiB/s (441kB/s)(2048KiB/4752msec) clat (usec): min=603, max=231454, avg=116029.10, stdev=163236.09 lat (usec): min=604, max=231455, avg=116029.87, stdev=163236.33 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 603], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 603], 60.00th=[231736], | 70.00th=[231736], 80.00th=[231736], 90.00th=[231736], 95.00th=[231736], | 99.00th=[231736], 99.50th=[231736], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 1777, max= 1809, per=42.15%, avg=1793.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2155KiB/s (2207kB/s)(10.0MiB/4752msec); 0 zone resets clat (msec): min=150, max=789, avg=448.20, stdev=226.04 lat (msec): min=150, max=789, avg=448.28, stdev=226.03 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 245], | 30.00th=[ 262], 40.00th=[ 288], 50.00th=[ 359], 60.00th=[ 451], | 70.00th=[ 514], 80.00th=[ 709], 90.00th=[ 718], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1809, max= 3930, per=37.35%, avg=2224.12, stdev=694.87, samples=8 iops : min= 1, max= 3, avg= 1.50, stdev= 0.76, samples=8 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=45.09%, ctx=374, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=159229: Sat May 9 15:56:08 2026 read: IOPS=1, BW=1276KiB/s (1307kB/s)(6144KiB/4814msec) clat (usec): min=408, max=220963, avg=105018.97, stdev=115022.08 lat (usec): min=409, max=220964, avg=105019.69, stdev=115022.13 clat percentiles (usec): | 1.00th=[ 408], 5.00th=[ 408], 10.00th=[ 408], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 611], 50.00th=[ 611], 60.00th=[189793], | 70.00th=[219153], 80.00th=[219153], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 1980, max= 3785, per=57.95%, avg=2465.25, stdev=880.42, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1276KiB/s (1307kB/s)(6144KiB/4814msec); 0 zone resets clat (msec): min=226, max=1274, avg=693.18, stdev=413.13 lat (msec): min=226, max=1274, avg=693.21, stdev=413.13 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 718], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1809, max= 3407, per=37.65%, avg=2241.80, stdev=657.21, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=41.67%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=30.13%, ctx=658, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=159230: Sat May 9 15:56:08 2026 read: IOPS=1, BW=1310KiB/s (1342kB/s)(5120KiB/3908msec) clat (usec): min=332, max=311239, avg=111782.36, stdev=138905.51 lat (usec): min=333, max=311240, avg=111783.16, stdev=138905.72 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 392], 40.00th=[ 392], 50.00th=[ 44827], 60.00th=[ 44827], | 70.00th=[202376], 80.00th=[202376], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7236, max= 7236, per=100.00%, avg=7236.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1834KiB/s (1878kB/s)(7168KiB/3908msec); 0 zone resets clat (msec): min=201, max=1040, avg=469.36, stdev=316.34 lat (msec): min=201, max=1040, avg=469.42, stdev=316.34 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 222], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 355], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 768], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1741, max= 3785, per=38.95%, avg=2319.40, stdev=828.82, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=16.67% lat (msec) : 50=8.33%, 250=25.00%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.03%, sys=44.97%, ctx=366, 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=4254KiB/s (4356kB/s), 431KiB/s-1967KiB/s (441kB/s-2014kB/s), io=20.0MiB (20.0MB), run=3645-4814msec WRITE: bw=5956KiB/s (6099kB/s), 1276KiB/s-2155KiB/s (1307kB/s-2207kB/s), io=28.0MiB (29.4MB), run=3645-4814msec rand-rw: (groupid=0, jobs=1): err= 0: pid=159222: Sat May 9 15:56:08 2026 read: IOPS=2, BW=2378KiB/s (2435kB/s)(7168KiB/3014msec) clat (msec): min=73, max=337, avg=196.35, stdev=112.41 lat (msec): min=73, max=337, avg=196.35, stdev=112.41 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 81], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 228], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 305], 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= 1976, max= 5154, per=90.50%, avg=3742.00, stdev=1618.30, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=1, BW=1699KiB/s (1740kB/s)(5120KiB/3014msec); 0 zone resets clat (msec): min=133, max=622, avg=319.51, stdev=212.80 lat (msec): min=133, max=622, avg=319.60, stdev=212.79 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2048, max= 5437, per=64.65%, avg=3742.50, stdev=2396.38, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.07%, sys=15.73%, ctx=111, 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=159223: Sat May 9 15:56:08 2026 read: IOPS=0, BW=435KiB/s (446kB/s)(2048KiB/4704msec) clat (msec): min=54, max=509, avg=282.11, stdev=322.14 lat (msec): min=54, max=509, avg=282.11, stdev=322.14 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 55], | 30.00th=[ 55], 40.00th=[ 55], 50.00th=[ 55], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1703, max= 2043, per=45.30%, avg=1873.00, stdev=240.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2177KiB/s (2229kB/s)(10.0MiB/4704msec); 0 zone resets clat (msec): min=160, max=932, avg=412.79, stdev=247.91 lat (msec): min=160, max=932, avg=412.87, stdev=247.90 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 169], | 30.00th=[ 176], 40.00th=[ 239], 50.00th=[ 330], 60.00th=[ 456], | 70.00th=[ 527], 80.00th=[ 542], 90.00th=[ 600], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1703, max= 4096, per=45.06%, avg=2608.33, stdev=1153.52, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=33.33%, 1000=8.33% cpu : usr=0.04%, sys=14.35%, ctx=122, 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=159224: Sat May 9 15:56:08 2026 read: IOPS=1, BW=1308KiB/s (1340kB/s)(6144KiB/4696msec) clat (msec): min=89, max=740, avg=290.82, stdev=238.14 lat (msec): min=89, max=740, avg=290.82, stdev=238.14 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 275], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2043, max= 4087, per=82.17%, avg=3397.67, stdev=1173.24, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1308KiB/s (1340kB/s)(6144KiB/4696msec); 0 zone resets clat (msec): min=67, max=909, avg=486.04, stdev=342.49 lat (msec): min=67, max=909, avg=486.11, stdev=342.50 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 78], | 30.00th=[ 78], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 584], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1976, max= 3407, per=40.62%, avg=2351.75, stdev=704.32, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=16.67%, 500=16.67%, 750=33.33%, 1000=8.33% cpu : usr=0.00%, sys=11.67%, ctx=107, 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=159225: Sat May 9 15:56:08 2026 read: IOPS=1, BW=1034KiB/s (1059kB/s)(5120KiB/4952msec) clat (msec): min=36, max=550, avg=237.53, stdev=200.91 lat (msec): min=36, max=550, avg=237.53, stdev=200.91 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 37], 10.00th=[ 37], 20.00th=[ 37], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1976, max= 3953, per=64.26%, avg=2657.33, stdev=1122.58, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1447KiB/s (1482kB/s)(7168KiB/4952msec); 0 zone resets clat (msec): min=106, max=845, avg=529.82, stdev=301.05 lat (msec): min=106, max=845, avg=530.04, stdev=301.04 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 190], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 514], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 818], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1723, max= 2048, per=33.19%, avg=1921.40, stdev=146.94, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=25.00%, 500=16.67%, 750=16.67% lat (msec) : 1000=25.00% cpu : usr=0.04%, sys=17.75%, ctx=207, 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=4136KiB/s (4235kB/s), 435KiB/s-2378KiB/s (446kB/s-2435kB/s), io=20.0MiB (20.0MB), run=3014-4952msec WRITE: bw=5790KiB/s (5929kB/s), 1308KiB/s-2177KiB/s (1340kB/s-2229kB/s), io=28.0MiB (29.4MB), run=3014-4952msec 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=159237: Sat May 9 15:56:18 2026 read: IOPS=1, BW=5555KiB/s (5688kB/s)(12.0MiB/2212msec) clat (msec): min=564, max=796, avg=697.81, stdev=119.47 lat (msec): min=564, max=796, avg=697.81, stdev=119.47 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 793], 80.00th=[ 793], 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= 8078, max= 8192, per=100.00%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=59.57%, ctx=2466, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=159239: Sat May 9 15:56:18 2026 read: IOPS=0, BW=1959KiB/s (2006kB/s)(4096KiB/2091msec) clat (nsec): min=798049k, max=798049k, avg=798049122.00, stdev= 0.00 lat (nsec): min=798051k, max=798051k, avg=798051247.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3918KiB/s (4012kB/s)(8192KiB/2091msec); 0 zone resets clat (msec): min=475, max=689, avg=582.23, stdev=151.07 lat (msec): min=475, max=689, avg=582.57, stdev=150.95 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 693], | 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] lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=25.22%, ctx=531, 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=159241: Sat May 9 15:56:18 2026 write: IOPS=0, BW=4066KiB/s (4164kB/s)(12.0MiB/3022msec); 0 zone resets clat (msec): min=204, max=1967, avg=960.04, stdev=908.44 lat (msec): min=204, max=1971, avg=961.40, stdev=910.00 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] 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%, 750=33.33%, 2000=33.33% cpu : usr=0.03%, sys=18.24%, ctx=107, 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=159243: Sat May 9 15:56:18 2026 write: IOPS=1, BW=4245KiB/s (4346kB/s)(12.0MiB/2895msec); 0 zone resets clat (msec): min=716, max=1247, avg=924.05, stdev=283.98 lat (msec): min=716, max=1247, avg=924.32, stdev=283.99 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8078, max= 8192, per=75.03%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=23.22%, ctx=102, 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=7407KiB/s (7585kB/s), 1959KiB/s-5555KiB/s (2006kB/s-5688kB/s), io=16.0MiB (16.8MB), run=2091-2212msec WRITE: bw=10.6MiB/s (11.1MB/s), 3918KiB/s-4245KiB/s (4012kB/s-4346kB/s), io=32.0MiB (33.6MB), run=2091-3022msec rand-rw: (groupid=0, jobs=1): err= 0: pid=159238: Sat May 9 15:56:18 2026 read: IOPS=1, BW=5373KiB/s (5502kB/s)(12.0MiB/2287msec) clat (msec): min=395, max=1282, avg=724.97, stdev=485.20 lat (msec): min=395, max=1282, avg=724.97, stdev=485.20 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7173, max= 8094, per=100.00%, avg=7633.50, stdev=651.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=19.25%, ctx=99, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=159240: Sat May 9 15:56:18 2026 read: IOPS=0, BW=1367KiB/s (1400kB/s)(4096KiB/2996msec) clat (nsec): min=1156.0M, max=1156.0M, avg=1156995206.00, stdev= 0.00 lat (nsec): min=1156.0M, max=1156.0M, avg=1156996227.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2734KiB/s (2800kB/s)(8192KiB/2996msec); 0 zone resets clat (msec): min=264, max=1455, avg=860.03, stdev=842.06 lat (msec): min=264, max=1455, avg=860.35, stdev=842.06 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 1452], | 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) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=18.73%, ctx=115, 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=159242: Sat May 9 15:56:18 2026 write: IOPS=0, BW=3960KiB/s (4055kB/s)(12.0MiB/3103msec); 0 zone resets clat (msec): min=293, max=2243, avg=993.89, stdev=1084.95 lat (msec): min=293, max=2243, avg=994.16, stdev=1084.91 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8175, max= 8192, per=77.50%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=12.64%, ctx=94, 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=159244: Sat May 9 15:56:18 2026 write: IOPS=1, BW=4669KiB/s (4781kB/s)(12.0MiB/2632msec); 0 zone resets clat (msec): min=319, max=1854, avg=835.24, stdev=882.59 lat (msec): min=319, max=1854, avg=835.58, stdev=882.62 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 334], | 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= 7025, max= 8094, per=71.59%, avg=7559.50, stdev=755.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=20.14%, ctx=142, 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=5469KiB/s (5600kB/s), 1367KiB/s-5373KiB/s (1400kB/s-5502kB/s), io=16.0MiB (16.8MB), run=2287-2996msec WRITE: bw=10.3MiB/s (10.8MB/s), 2734KiB/s-4669KiB/s (2800kB/s-4781kB/s), io=32.0MiB (33.6MB), run=2632-3103msec