== sanity test 398b: DIO and buffer IO race ============== 07:19:28 (1788002368) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.87839 s, 17.5 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=181628: Sat Aug 29 07:20:43 2026 read: IOPS=22, BW=91.9KiB/s (94.1kB/s)(5992KiB/65217msec) clat (usec): min=45, max=715085, avg=23289.93, stdev=21101.98 lat (usec): min=46, max=715086, avg=23291.22, stdev=21102.09 clat percentiles (usec): | 1.00th=[ 165], 5.00th=[ 8717], 10.00th=[ 11076], 20.00th=[ 13960], | 30.00th=[ 16188], 40.00th=[ 18220], 50.00th=[ 21103], 60.00th=[ 24249], | 70.00th=[ 26870], 80.00th=[ 31327], 90.00th=[ 36439], 95.00th=[ 42206], | 99.00th=[ 58459], 99.50th=[ 66323], 99.90th=[ 91751], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 40, max= 143, per=25.09%, avg=92.09, stdev=19.34, samples=128 iops : min= 10, max= 35, avg=22.52, stdev= 4.88, samples=128 write: IOPS=24, BW=96.5KiB/s (98.9kB/s)(6296KiB/65217msec); 0 zone resets clat (usec): min=859, max=104755, avg=19057.75, stdev=13673.66 lat (usec): min=860, max=104757, avg=19059.15, stdev=13673.74 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 3326], 10.00th=[ 4359], 20.00th=[ 5997], | 30.00th=[ 9110], 40.00th=[ 13304], 50.00th=[ 16319], 60.00th=[ 19792], | 70.00th=[ 24249], 80.00th=[ 30540], 90.00th=[ 38536], 95.00th=[ 45351], | 99.00th=[ 57410], 99.50th=[ 65799], 99.90th=[ 78119], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 16, max= 191, per=25.22%, avg=96.85, stdev=28.52, samples=128 iops : min= 4, max= 47, avg=23.70, stdev= 7.16, samples=128 lat (usec) : 50=0.03%, 100=0.07%, 250=0.98%, 500=0.07%, 1000=0.26% lat (msec) : 2=0.88%, 4=2.90%, 10=14.52%, 20=33.82%, 50=43.65% lat (msec) : 100=2.77%, 250=0.03%, 750=0.03% cpu : usr=0.14%, sys=26.12%, ctx=9983, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181629: Sat Aug 29 07:20:43 2026 read: IOPS=22, BW=91.5KiB/s (93.7kB/s)(5940KiB/64894msec) clat (usec): min=81, max=109376, avg=22900.86, stdev=11693.56 lat (usec): min=82, max=109378, avg=22902.12, stdev=11693.66 clat percentiles (usec): | 1.00th=[ 229], 5.00th=[ 9372], 10.00th=[ 11600], 20.00th=[ 13829], | 30.00th=[ 15795], 40.00th=[ 17957], 50.00th=[ 20579], 60.00th=[ 23462], | 70.00th=[ 26870], 80.00th=[ 31065], 90.00th=[ 36963], 95.00th=[ 43254], | 99.00th=[ 62653], 99.50th=[ 71828], 99.90th=[103285], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 6, max= 191, per=24.85%, avg=91.19, stdev=25.12, samples=129 iops : min= 1, max= 47, avg=22.29, stdev= 6.34, samples=129 write: IOPS=24, BW=97.8KiB/s (100kB/s)(6348KiB/64894msec); 0 zone resets clat (usec): min=648, max=693679, avg=19249.02, stdev=21515.71 lat (usec): min=649, max=693681, avg=19251.18, stdev=21515.18 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 3130], 10.00th=[ 4228], 20.00th=[ 5800], | 30.00th=[ 9241], 40.00th=[ 13566], 50.00th=[ 16581], 60.00th=[ 19792], | 70.00th=[ 23987], 80.00th=[ 30278], 90.00th=[ 37487], 95.00th=[ 44303], | 99.00th=[ 56886], 99.50th=[ 64750], 99.90th=[ 84411], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 31, max= 183, per=25.61%, avg=98.35, stdev=27.40, samples=128 iops : min= 7, max= 45, avg=24.08, stdev= 6.87, samples=128 lat (usec) : 100=0.03%, 250=0.49%, 500=0.16%, 750=0.03%, 1000=0.07% lat (msec) : 2=0.75%, 4=3.84%, 10=14.36%, 20=34.24%, 50=43.46% lat (msec) : 100=2.47%, 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=26.33%, ctx=10242, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181630: Sat Aug 29 07:20:43 2026 read: IOPS=23, BW=92.2KiB/s (94.4kB/s)(6028KiB/65359msec) clat (usec): min=38, max=715577, avg=23849.44, stdev=21345.61 lat (usec): min=39, max=715579, avg=23850.97, stdev=21345.50 clat percentiles (usec): | 1.00th=[ 147], 5.00th=[ 8979], 10.00th=[ 11076], 20.00th=[ 13829], | 30.00th=[ 16450], 40.00th=[ 19006], 50.00th=[ 21627], 60.00th=[ 24773], | 70.00th=[ 27919], 80.00th=[ 31851], 90.00th=[ 37487], 95.00th=[ 42730], | 99.00th=[ 63701], 99.50th=[ 71828], 99.90th=[100140], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 159, per=24.84%, avg=91.16, stdev=24.11, samples=129 iops : min= 1, max= 39, avg=22.29, stdev= 6.09, samples=129 write: IOPS=23, BW=95.8KiB/s (98.1kB/s)(6260KiB/65359msec); 0 zone resets clat (usec): min=664, max=96878, avg=18598.79, stdev=13780.00 lat (usec): min=665, max=96880, avg=18600.70, stdev=13780.05 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 2868], 10.00th=[ 4113], 20.00th=[ 5669], | 30.00th=[ 8717], 40.00th=[12649], 50.00th=[15926], 60.00th=[19530], | 70.00th=[23987], 80.00th=[29754], 90.00th=[38011], 95.00th=[45351], | 99.00th=[60031], 99.50th=[66323], 99.90th=[76022], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 19, max= 168, per=24.63%, avg=94.57, stdev=25.78, samples=129 iops : min= 4, max= 42, avg=23.13, stdev= 6.53, samples=129 lat (usec) : 50=0.07%, 100=0.07%, 250=0.75%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=1.14%, 4=3.39%, 10=14.91%, 20=32.13%, 50=44.43% lat (msec) : 100=2.70%, 750=0.03% cpu : usr=0.10%, sys=26.15%, ctx=9991, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181631: Sat Aug 29 07:20:43 2026 read: IOPS=23, BW=93.9KiB/s (96.2kB/s)(6052KiB/64436msec) clat (usec): min=61, max=96137, avg=22937.54, stdev=11475.85 lat (usec): min=62, max=96138, avg=22941.41, stdev=11476.28 clat percentiles (usec): | 1.00th=[ 151], 5.00th=[ 9372], 10.00th=[11469], 20.00th=[13960], | 30.00th=[16450], 40.00th=[18744], 50.00th=[21103], 60.00th=[23987], | 70.00th=[27132], 80.00th=[30802], 90.00th=[36439], 95.00th=[41157], | 99.00th=[64750], 99.50th=[78119], 99.90th=[94897], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 39, max= 168, per=25.72%, avg=94.41, stdev=23.03, samples=127 iops : min= 9, max= 42, avg=23.09, stdev= 5.87, samples=127 write: IOPS=24, BW=96.8KiB/s (99.1kB/s)(6236KiB/64436msec); 0 zone resets clat (usec): min=841, max=705142, avg=18859.53, stdev=21787.07 lat (usec): min=843, max=705143, avg=18860.82, stdev=21787.08 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 2966], 10.00th=[ 4228], 20.00th=[ 5800], | 30.00th=[ 8717], 40.00th=[ 12387], 50.00th=[ 16057], 60.00th=[ 19268], | 70.00th=[ 23725], 80.00th=[ 29230], 90.00th=[ 36963], 95.00th=[ 44303], | 99.00th=[ 56361], 99.50th=[ 61604], 99.90th=[ 70779], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 168, per=25.10%, avg=96.38, stdev=27.52, samples=128 iops : min= 1, max= 42, avg=23.59, stdev= 6.88, samples=128 lat (usec) : 100=0.10%, 250=0.78%, 500=0.10%, 1000=0.10% lat (msec) : 2=0.94%, 4=3.52%, 10=14.26%, 20=33.89%, 50=44.08% lat (msec) : 100=2.21%, 750=0.03% cpu : usr=0.12%, sys=26.22%, ctx=10043, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=367KiB/s (376kB/s), 91.5KiB/s-93.9KiB/s (93.7kB/s-96.2kB/s), io=23.4MiB (24.6MB), run=64436-65359msec WRITE: bw=385KiB/s (394kB/s), 95.8KiB/s-97.8KiB/s (98.1kB/s-100kB/s), io=24.6MiB (25.7MB), run=64436-65359msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181623: Sat Aug 29 07:20:50 2026 read: IOPS=20, BW=82.3KiB/s (84.2kB/s)(5992KiB/72836msec) clat (msec): min=2, max=707, avg=21.20, stdev=24.14 lat (msec): min=2, max=707, avg=21.20, stdev=24.14 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 78], 99.50th=[ 86], 99.90th=[ 103], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 16, max= 304, per=25.12%, avg=82.66, stdev=64.01, samples=144 iops : min= 4, max= 76, avg=20.26, stdev=16.13, samples=144 write: IOPS=21, BW=86.4KiB/s (88.5kB/s)(6296KiB/72836msec); 0 zone resets clat (msec): min=4, max=125, avg=25.88, stdev=18.01 lat (msec): min=4, max=125, avg=25.88, stdev=18.01 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 52], 95.00th=[ 59], | 99.00th=[ 79], 99.50th=[ 92], 99.90th=[ 107], 99.95th=[ 126], | 99.99th=[ 126] bw ( KiB/s): min= 8, max= 320, per=25.17%, avg=86.84, stdev=63.90, samples=144 iops : min= 2, max= 80, avg=21.30, stdev=16.11, samples=144 lat (msec) : 4=1.04%, 10=27.08%, 20=26.17%, 50=36.82%, 100=8.63% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.13%, sys=11.99%, ctx=5961, 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=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=181624: Sat Aug 29 07:20:50 2026 read: IOPS=20, BW=81.8KiB/s (83.7kB/s)(5940KiB/72639msec) clat (msec): min=2, max=700, avg=20.81, stdev=23.81 lat (msec): min=2, max=700, avg=20.81, stdev=23.81 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 56], | 99.00th=[ 70], 99.50th=[ 74], 99.90th=[ 87], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 8, max= 360, per=24.81%, avg=81.63, stdev=63.95, samples=143 iops : min= 2, max= 90, avg=19.99, stdev=16.11, samples=143 write: IOPS=21, BW=87.4KiB/s (89.5kB/s)(6348KiB/72639msec); 0 zone resets clat (msec): min=4, max=134, avg=26.08, stdev=18.14 lat (msec): min=4, max=134, avg=26.08, stdev=18.14 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 83], 99.50th=[ 100], 99.90th=[ 122], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 16, max= 320, per=25.20%, avg=86.94, stdev=61.96, samples=143 iops : min= 4, max= 80, avg=21.32, stdev=15.61, samples=143 lat (msec) : 4=1.11%, 10=26.53%, 20=27.05%, 50=36.39%, 100=8.69% lat (msec) : 250=0.20%, 750=0.03% cpu : usr=0.12%, sys=12.22%, ctx=6104, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181625: Sat Aug 29 07:20:50 2026 read: IOPS=20, BW=83.2KiB/s (85.2kB/s)(6028KiB/72465msec) clat (msec): min=2, max=128, avg=20.61, stdev=16.57 lat (msec): min=2, max=128, avg=20.61, stdev=16.57 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 72], 99.50th=[ 83], 99.90th=[ 110], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 15, max= 336, per=25.53%, avg=84.00, stdev=63.65, samples=142 iops : min= 3, max= 84, avg=20.58, stdev=16.01, samples=142 write: IOPS=21, BW=86.4KiB/s (88.5kB/s)(6260KiB/72465msec); 0 zone resets clat (msec): min=4, max=706, avg=26.23, stdev=24.81 lat (msec): min=4, max=706, avg=26.24, stdev=24.81 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 60], | 99.00th=[ 84], 99.50th=[ 92], 99.90th=[ 138], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 24, max= 296, per=25.10%, avg=86.61, stdev=60.37, samples=143 iops : min= 6, max= 74, avg=21.24, stdev=15.23, samples=143 lat (msec) : 4=0.91%, 10=25.98%, 20=28.55%, 50=35.48%, 100=8.82% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.11%, sys=12.28%, ctx=6075, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181626: Sat Aug 29 07:20:50 2026 read: IOPS=20, BW=83.4KiB/s (85.4kB/s)(6052KiB/72550msec) clat (msec): min=2, max=109, avg=20.52, stdev=16.06 lat (msec): min=2, max=109, avg=20.52, stdev=16.06 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 32], 90.00th=[ 46], 95.00th=[ 54], | 99.00th=[ 71], 99.50th=[ 79], 99.90th=[ 102], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 15, max= 312, per=25.50%, avg=83.89, stdev=59.12, samples=142 iops : min= 3, max= 78, avg=20.56, stdev=14.90, samples=142 write: IOPS=21, BW=85.0KiB/s (88.0kB/s)(6236KiB/72550msec); 0 zone resets clat (msec): min=3, max=721, avg=26.41, stdev=25.16 lat (msec): min=3, max=721, avg=26.41, stdev=25.16 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 50], 95.00th=[ 59], | 99.00th=[ 83], 99.50th=[ 99], 99.90th=[ 138], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 24, max= 344, per=24.92%, avg=85.99, stdev=61.35, samples=143 iops : min= 6, max= 86, avg=21.08, stdev=15.46, samples=143 lat (msec) : 4=0.85%, 10=25.85%, 20=28.39%, 50=36.49%, 100=8.17% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.12%, sys=12.20%, ctx=6207, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=330KiB/s (338kB/s), 81.8KiB/s-83.4KiB/s (83.7kB/s-85.4kB/s), io=23.4MiB (24.6MB), run=72465-72836msec WRITE: bw=345KiB/s (353kB/s), 85.0KiB/s-87.4KiB/s (88.0kB/s-89.5kB/s), io=24.6MiB (25.7MB), run=72465-72836msec 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=181656: Sat Aug 29 07:21:15 2026 read: IOPS=21, BW=345KiB/s (353kB/s)(5920KiB/17156msec) clat (usec): min=55, max=75015, avg=22801.74, stdev=12524.08 lat (usec): min=56, max=75015, avg=22802.67, stdev=12524.08 clat percentiles (usec): | 1.00th=[ 100], 5.00th=[ 241], 10.00th=[ 9765], 20.00th=[13173], | 30.00th=[15401], 40.00th=[18220], 50.00th=[21103], 60.00th=[24511], | 70.00th=[27395], 80.00th=[31851], 90.00th=[39584], 95.00th=[44827], | 99.00th=[67634], 99.50th=[69731], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 190, max= 702, per=25.67%, avg=344.21, stdev=115.23, samples=34 iops : min= 11, max= 43, avg=20.82, stdev= 7.28, samples=34 write: IOPS=23, BW=371KiB/s (380kB/s)(6368KiB/17156msec); 0 zone resets clat (usec): min=1190, max=101798, avg=21817.50, stdev=13829.08 lat (usec): min=1192, max=101799, avg=21819.69, stdev=13829.01 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 41], 95.00th=[ 46], | 99.00th=[ 68], 99.50th=[ 71], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 190, max= 672, per=26.27%, avg=370.35, stdev=121.57, samples=34 iops : min= 11, max= 42, avg=22.47, stdev= 7.63, samples=34 lat (usec) : 100=0.52%, 250=1.95%, 500=0.13% lat (msec) : 2=0.26%, 4=0.91%, 10=12.24%, 20=33.85%, 50=46.88% lat (msec) : 100=3.12%, 250=0.13% cpu : usr=0.08%, sys=29.61%, ctx=3072, 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=181657: Sat Aug 29 07:21:15 2026 read: IOPS=21, BW=341KiB/s (350kB/s)(5744KiB/16826msec) clat (usec): min=50, max=98113, avg=23826.74, stdev=12187.45 lat (usec): min=52, max=98114, avg=23828.19, stdev=12188.74 clat percentiles (usec): | 1.00th=[ 115], 5.00th=[ 7439], 10.00th=[10945], 20.00th=[13960], | 30.00th=[17433], 40.00th=[19268], 50.00th=[22414], 60.00th=[24773], | 70.00th=[28967], 80.00th=[33817], 90.00th=[40109], 95.00th=[45351], | 99.00th=[53216], 99.50th=[64226], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 146, max= 608, per=25.41%, avg=340.70, stdev=98.35, samples=33 iops : min= 9, max= 38, avg=20.64, stdev= 6.18, samples=33 write: IOPS=24, BW=389KiB/s (398kB/s)(6544KiB/16826msec); 0 zone resets clat (usec): min=1227, max=80330, avg=19942.01, stdev=13355.81 lat (usec): min=1229, max=80331, avg=19978.15, stdev=13420.73 clat percentiles (usec): | 1.00th=[ 2212], 5.00th=[ 4293], 10.00th=[ 6194], 20.00th=[ 8717], | 30.00th=[10814], 40.00th=[13435], 50.00th=[16909], 60.00th=[20317], | 70.00th=[24249], 80.00th=[30802], 90.00th=[38536], 95.00th=[46924], | 99.00th=[56886], 99.50th=[62653], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 160, max= 736, per=27.55%, avg=388.48, stdev=128.16, samples=33 iops : min= 10, max= 46, avg=23.61, stdev= 8.02, samples=33 lat (usec) : 100=0.13%, 250=1.82%, 500=0.13% lat (msec) : 2=0.39%, 4=1.17%, 10=13.93%, 20=33.72%, 50=45.96% lat (msec) : 100=2.73% cpu : usr=0.07%, sys=30.26%, ctx=3140, 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=181659: Sat Aug 29 07:21:15 2026 read: IOPS=22, BW=361KiB/s (369kB/s)(6256KiB/17346msec) clat (usec): min=85, max=86646, avg=22920.57, stdev=12786.07 lat (usec): min=85, max=86647, avg=22921.48, stdev=12786.17 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 1483], 10.00th=[10290], 20.00th=[13698], | 30.00th=[16188], 40.00th=[18482], 50.00th=[21103], 60.00th=[23462], | 70.00th=[26346], 80.00th=[32113], 90.00th=[39584], 95.00th=[46400], | 99.00th=[69731], 99.50th=[76022], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 160, max= 704, per=26.88%, avg=360.41, stdev=127.08, samples=34 iops : min= 10, max= 44, avg=21.85, stdev= 8.00, samples=34 write: IOPS=21, BW=348KiB/s (356kB/s)(6032KiB/17346msec); 0 zone resets clat (usec): min=949, max=77312, avg=22037.00, stdev=14094.63 lat (usec): min=950, max=77313, avg=22038.87, stdev=14094.62 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 4424], 10.00th=[ 5866], 20.00th=[ 9110], | 30.00th=[13173], 40.00th=[15926], 50.00th=[19530], 60.00th=[23462], | 70.00th=[28181], 80.00th=[33424], 90.00th=[41681], 95.00th=[47973], | 99.00th=[64226], 99.50th=[74974], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 190, max= 638, per=24.35%, avg=343.29, stdev=111.24, samples=34 iops : min= 11, max= 39, avg=20.79, stdev= 6.94, samples=34 lat (usec) : 100=0.52%, 250=1.43%, 500=0.52%, 1000=0.13% lat (msec) : 2=0.65%, 4=1.17%, 10=12.11%, 20=31.90%, 50=47.92% lat (msec) : 100=3.65% cpu : usr=0.06%, sys=29.40%, ctx=3117, 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=181661: Sat Aug 29 07:21:15 2026 read: IOPS=21, BW=338KiB/s (346kB/s)(6032KiB/17860msec) clat (usec): min=108, max=66289, avg=23212.99, stdev=12484.97 lat (usec): min=109, max=66290, avg=23213.84, stdev=12485.05 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 273], 10.00th=[10683], 20.00th=[12911], | 30.00th=[16188], 40.00th=[19006], 50.00th=[20841], 60.00th=[24249], | 70.00th=[28443], 80.00th=[32637], 90.00th=[39584], 95.00th=[45876], | 99.00th=[61080], 99.50th=[62653], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 128, max= 702, per=24.76%, avg=332.03, stdev=131.95, samples=35 iops : min= 8, max= 43, avg=20.09, stdev= 8.30, samples=35 write: IOPS=21, BW=350KiB/s (359kB/s)(6256KiB/17860msec); 0 zone resets clat (usec): min=1593, max=111820, avg=23080.34, stdev=16246.34 lat (usec): min=1594, max=111822, avg=23081.96, stdev=16246.48 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 46], 95.00th=[ 56], | 99.00th=[ 73], 99.50th=[ 84], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 159, max= 542, per=24.57%, avg=346.43, stdev=104.60, samples=35 iops : min= 9, max= 33, avg=21.00, stdev= 6.60, samples=35 lat (usec) : 250=2.21%, 500=0.39% lat (msec) : 2=0.13%, 4=1.56%, 10=12.24%, 20=32.94%, 50=45.18% lat (msec) : 100=5.21%, 250=0.13% cpu : usr=0.06%, sys=28.67%, ctx=3145, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1341KiB/s (1373kB/s), 338KiB/s-361KiB/s (346kB/s-369kB/s), io=23.4MiB (24.5MB), run=16826-17860msec WRITE: bw=1411KiB/s (1445kB/s), 348KiB/s-389KiB/s (356kB/s-398kB/s), io=24.6MiB (25.8MB), run=16826-17860msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181658: Sat Aug 29 07:21:16 2026 read: IOPS=18, BW=301KiB/s (308kB/s)(5920KiB/19667msec) clat (usec): min=3250, max=91984, avg=23052.50, stdev=16288.86 lat (usec): min=3251, max=91985, avg=23053.31, stdev=16288.86 clat percentiles (usec): | 1.00th=[ 3884], 5.00th=[ 6849], 10.00th=[ 7701], 20.00th=[ 9765], | 30.00th=[12911], 40.00th=[15139], 50.00th=[17171], 60.00th=[20579], | 70.00th=[26346], 80.00th=[36439], 90.00th=[47973], 95.00th=[53740], | 99.00th=[79168], 99.50th=[79168], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 127, max= 768, per=24.42%, avg=297.18, stdev=145.71, samples=39 iops : min= 7, max= 48, avg=17.97, stdev= 9.33, samples=39 write: IOPS=20, BW=324KiB/s (332kB/s)(6368KiB/19667msec); 0 zone resets clat (msec): min=4, max=111, avg=27.80, stdev=17.00 lat (msec): min=4, max=111, avg=27.80, stdev=17.00 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 42], 90.00th=[ 52], 95.00th=[ 58], | 99.00th=[ 79], 99.50th=[ 111], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 126, max= 800, per=25.07%, avg=321.10, stdev=148.23, samples=39 iops : min= 7, max= 50, avg=19.46, stdev= 9.51, samples=39 lat (msec) : 4=0.52%, 10=13.93%, 20=36.07%, 50=40.49%, 100=8.72% lat (msec) : 250=0.26% cpu : usr=0.12%, sys=13.04%, ctx=1607, 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=181660: Sat Aug 29 07:21:16 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(5744KiB/19622msec) clat (usec): min=4044, max=95257, avg=23574.07, stdev=16688.21 lat (usec): min=4044, max=95258, avg=23574.81, stdev=16688.22 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 6980], 10.00th=[ 8717], 20.00th=[11207], | 30.00th=[13304], 40.00th=[15270], 50.00th=[17695], 60.00th=[21103], | 70.00th=[26084], 80.00th=[33817], 90.00th=[49546], 95.00th=[60556], | 99.00th=[76022], 99.50th=[87557], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 63, max= 736, per=24.08%, avg=293.10, stdev=138.19, samples=39 iops : min= 3, max= 46, avg=17.72, stdev= 8.79, samples=39 write: IOPS=20, BW=334KiB/s (342kB/s)(6544KiB/19622msec); 0 zone resets clat (msec): min=5, max=133, avg=27.23, stdev=18.80 lat (msec): min=5, max=133, avg=27.23, stdev=18.80 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 52], 95.00th=[ 64], | 99.00th=[ 99], 99.50th=[ 106], 99.90th=[ 134], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 126, max= 832, per=25.93%, avg=332.15, stdev=174.06, samples=39 iops : min= 7, max= 52, avg=20.15, stdev=11.09, samples=39 lat (msec) : 10=11.46%, 20=39.32%, 50=39.19%, 100=9.51%, 250=0.52% cpu : usr=0.10%, sys=12.93%, ctx=1626, 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=181662: Sat Aug 29 07:21:16 2026 read: IOPS=20, BW=321KiB/s (329kB/s)(6256KiB/19468msec) clat (msec): min=4, max=121, avg=22.20, stdev=16.53 lat (msec): min=4, max=121, avg=22.20, stdev=16.53 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 46], 95.00th=[ 56], | 99.00th=[ 84], 99.50th=[ 115], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 158, max= 960, per=26.12%, avg=317.87, stdev=170.10, samples=38 iops : min= 9, max= 60, avg=19.26, stdev=10.86, samples=38 write: IOPS=19, BW=310KiB/s (317kB/s)(6032KiB/19468msec); 0 zone resets clat (msec): min=6, max=113, avg=28.33, stdev=17.38 lat (msec): min=6, max=113, avg=28.33, stdev=17.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 89], 99.50th=[ 112], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 127, max= 640, per=23.30%, avg=298.47, stdev=111.37, samples=38 iops : min= 7, max= 40, avg=18.03, stdev= 7.08, samples=38 lat (msec) : 10=11.59%, 20=39.97%, 50=39.19%, 100=8.72%, 250=0.52% cpu : usr=0.08%, sys=13.73%, ctx=1719, 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=181663: Sat Aug 29 07:21:16 2026 read: IOPS=19, BW=307KiB/s (315kB/s)(6032KiB/19633msec) clat (msec): min=3, max=106, avg=22.47, stdev=17.63 lat (msec): min=3, max=106, avg=22.47, stdev=17.63 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 32], 90.00th=[ 47], 95.00th=[ 60], | 99.00th=[ 88], 99.50th=[ 106], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 63, max= 864, per=25.06%, avg=304.95, stdev=172.09, samples=39 iops : min= 3, max= 54, avg=18.46, stdev=11.01, samples=39 write: IOPS=19, BW=319KiB/s (326kB/s)(6256KiB/19633msec); 0 zone resets clat (msec): min=4, max=129, avg=28.26, stdev=18.58 lat (msec): min=4, max=129, avg=28.26, stdev=18.58 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 52], 95.00th=[ 65], | 99.00th=[ 97], 99.50th=[ 127], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 127, max= 800, per=24.88%, avg=318.69, stdev=139.70, samples=39 iops : min= 7, max= 50, avg=19.31, stdev= 8.95, samples=39 lat (msec) : 4=0.26%, 10=13.41%, 20=38.15%, 50=38.15%, 100=9.51% lat (msec) : 250=0.52% cpu : usr=0.10%, sys=12.84%, ctx=1655, 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=1218KiB/s (1247kB/s), 293KiB/s-321KiB/s (300kB/s-329kB/s), io=23.4MiB (24.5MB), run=19468-19667msec WRITE: bw=1281KiB/s (1312kB/s), 310KiB/s-334KiB/s (317kB/s-342kB/s), io=24.6MiB (25.8MB), run=19468-19667msec 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=181673: Sat Aug 29 07:21:25 2026 read: IOPS=3, BW=3176KiB/s (3252kB/s)(7168KiB/2257msec) clat (msec): min=78, max=690, avg=228.06, stdev=211.39 lat (msec): min=78, max=690, avg=228.06, stdev=211.39 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 86], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 201], 80.00th=[ 220], 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= 2043, max= 4254, per=84.39%, avg=3464.33, stdev=1233.44, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=2, BW=2268KiB/s (2323kB/s)(5120KiB/2257msec); 0 zone resets clat (msec): min=76, max=255, avg=124.95, stdev=75.48 lat (msec): min=76, max=255, avg=125.03, stdev=75.47 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 79], 40.00th=[ 79], 50.00th=[ 90], 60.00th=[ 90], | 70.00th=[ 126], 80.00th=[ 126], 90.00th=[ 255], 95.00th=[ 255], | 99.00th=[ 255], 99.50th=[ 255], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 1976, max= 8175, per=88.32%, avg=5075.50, stdev=4383.35, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 lat (msec) : 100=41.67%, 250=41.67%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=16.89%, ctx=86, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181676: Sat Aug 29 07:21:25 2026 read: IOPS=0, BW=411KiB/s (420kB/s)(2048KiB/4989msec) clat (msec): min=239, max=529, avg=384.54, stdev=205.37 lat (msec): min=239, max=529, avg=384.54, stdev=205.37 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 531], 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= 1402, max= 2007, per=41.52%, avg=1704.50, stdev=427.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2053KiB/s (2102kB/s)(10.0MiB/4989msec); 0 zone resets clat (msec): min=172, max=1254, avg=420.13, stdev=332.15 lat (msec): min=172, max=1254, avg=420.22, stdev=332.15 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 186], | 30.00th=[ 190], 40.00th=[ 203], 50.00th=[ 224], 60.00th=[ 397], | 70.00th=[ 460], 80.00th=[ 535], 90.00th=[ 584], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 2043, max= 4096, per=47.47%, avg=2728.33, stdev=1055.91, samples=6 iops : min= 1, max= 4, avg= 2.33, stdev= 1.03, samples=6 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.02%, sys=19.33%, ctx=200, 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=181678: Sat Aug 29 07:21:25 2026 read: IOPS=1, BW=1234KiB/s (1264kB/s)(6144KiB/4978msec) clat (msec): min=97, max=256, avg=171.36, stdev=69.97 lat (msec): min=97, max=256, avg=171.36, stdev=69.97 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 188], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 257], 95.00th=[ 257], | 99.00th=[ 257], 99.50th=[ 257], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 2007, max= 2048, per=49.64%, avg=2037.80, stdev=17.40, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1234KiB/s (1264kB/s)(6144KiB/4978msec); 0 zone resets clat (msec): min=426, max=898, avg=642.99, stdev=190.53 lat (msec): min=426, max=898, avg=643.11, stdev=190.56 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 743], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1976, max= 2048, per=35.29%, avg=2028.33, stdev=30.23, samples=6 iops : min= 1, max= 2, avg= 1.50, stdev= 0.55, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=16.80%, ctx=191, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181679: Sat Aug 29 07:21:25 2026 read: IOPS=1, BW=1183KiB/s (1212kB/s)(5120KiB/4327msec) clat (msec): min=73, max=754, avg=227.29, stdev=295.50 lat (msec): min=73, max=754, avg=227.29, stdev=295.50 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 112], 60.00th=[ 112], | 70.00th=[ 121], 80.00th=[ 121], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 4015, max= 4087, per=98.68%, avg=4051.00, stdev=50.91, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1657KiB/s (1696kB/s)(7168KiB/4327msec); 0 zone resets clat (msec): min=94, max=1192, avg=453.63, stdev=396.65 lat (msec): min=94, max=1192, avg=453.71, stdev=396.66 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 150], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 288], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 751], 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= 1446, max= 4096, per=47.78%, avg=2745.80, stdev=1256.62, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.52, samples=5 lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=19.46%, ctx=368, 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=4105KiB/s (4204kB/s), 411KiB/s-3176KiB/s (420kB/s-3252kB/s), io=20.0MiB (20.0MB), run=2257-4989msec WRITE: bw=5747KiB/s (5885kB/s), 1234KiB/s-2268KiB/s (1264kB/s-2323kB/s), io=28.0MiB (29.4MB), run=2257-4989msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181672: Sat Aug 29 07:21:25 2026 read: IOPS=1, BW=1537KiB/s (1573kB/s)(7168KiB/4665msec) clat (usec): min=704, max=997182, avg=275533.00, stdev=327486.56 lat (usec): min=705, max=997183, avg=275534.63, stdev=327486.47 clat percentiles (usec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[116917], | 30.00th=[173016], 40.00th=[173016], 50.00th=[206570], 60.00th=[212861], | 70.00th=[212861], 80.00th=[221250], 90.00th=[994051], 95.00th=[994051], | 99.00th=[994051], 99.50th=[994051], 99.90th=[994051], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 2043, max= 4096, per=65.79%, avg=2758.75, stdev=968.45, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.26, samples=4 write: IOPS=1, BW=1098KiB/s (1124kB/s)(5120KiB/4665msec); 0 zone resets clat (msec): min=94, max=785, avg=536.65, stdev=280.93 lat (msec): min=94, max=785, avg=536.72, stdev=280.94 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 2007, max= 2048, per=34.68%, avg=2035.50, stdev=19.47, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=25.00% cpu : usr=0.04%, sys=39.94%, ctx=1400, 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=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=181674: Sat Aug 29 07:21:25 2026 read: IOPS=0, BW=446KiB/s (456kB/s)(2048KiB/4596msec) clat (msec): min=155, max=235, avg=195.72, stdev=56.24 lat (msec): min=155, max=235, avg=195.72, stdev=56.24 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 236], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 1381, max= 2039, per=40.78%, avg=1710.00, stdev=465.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2228KiB/s (2281kB/s)(10.0MiB/4596msec); 0 zone resets clat (msec): min=66, max=972, avg=419.35, stdev=304.95 lat (msec): min=66, max=972, avg=419.43, stdev=304.95 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 165], | 30.00th=[ 180], 40.00th=[ 226], 50.00th=[ 326], 60.00th=[ 330], | 70.00th=[ 418], 80.00th=[ 743], 90.00th=[ 776], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 2039, max= 4096, per=62.26%, avg=3654.60, stdev=905.48, samples=5 iops : min= 1, max= 4, avg= 3.20, stdev= 1.30, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=45.70%, ctx=591, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181675: Sat Aug 29 07:21:25 2026 read: IOPS=1, BW=1412KiB/s (1446kB/s)(6144KiB/4352msec) clat (msec): min=29, max=398, avg=214.76, stdev=126.82 lat (msec): min=29, max=398, avg=214.76, stdev=126.82 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 29], 10.00th=[ 29], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 232], 50.00th=[ 232], 60.00th=[ 243], | 70.00th=[ 264], 80.00th=[ 264], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 2007, max= 4087, per=60.70%, avg=2545.25, stdev=1027.98, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1412KiB/s (1446kB/s)(6144KiB/4352msec); 0 zone resets clat (msec): min=247, max=1075, avg=503.84, stdev=295.70 lat (msec): min=247, max=1075, avg=503.92, stdev=295.70 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 493], | 70.00th=[ 502], 80.00th=[ 502], 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= 1374, max= 2048, per=32.61%, avg=1914.00, stdev=266.06, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 50=8.33%, 250=33.33%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=45.37%, ctx=791, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181677: Sat Aug 29 07:21:25 2026 read: IOPS=1, BW=1048KiB/s (1073kB/s)(5120KiB/4884msec) clat (usec): min=490, max=797990, avg=246091.81, stdev=326531.98 lat (usec): min=492, max=797992, avg=246093.42, stdev=326532.05 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 1876], 40.00th=[ 1876], 50.00th=[212861], 60.00th=[212861], | 70.00th=[217056], 80.00th=[217056], 90.00th=[801113], 95.00th=[801113], | 99.00th=[801113], 99.50th=[801113], 99.90th=[801113], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 2048, max= 6144, per=97.69%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1468KiB/s (1503kB/s)(7168KiB/4884msec); 0 zone resets clat (msec): min=117, max=1076, avg=514.16, stdev=353.40 lat (msec): min=117, max=1076, avg=514.24, stdev=353.40 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 220], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 506], 60.00th=[ 535], | 70.00th=[ 535], 80.00th=[ 877], 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= 1404, max= 4096, per=39.52%, avg=2319.60, stdev=1029.80, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=8.33%, 750=16.67%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=34.18%, ctx=220, 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=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=4193KiB/s (4294kB/s), 446KiB/s-1537KiB/s (456kB/s-1573kB/s), io=20.0MiB (20.0MB), run=4352-4884msec WRITE: bw=5871KiB/s (6011kB/s), 1098KiB/s-2228KiB/s (1124kB/s-2281kB/s), io=28.0MiB (29.4MB), run=4352-4884msec 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=181686: Sat Aug 29 07:21:33 2026 read: IOPS=1, BW=6804KiB/s (6967kB/s)(12.0MiB/1806msec) clat (msec): min=444, max=718, avg=571.31, stdev=137.87 lat (msec): min=444, max=718, avg=571.32, stdev=137.87 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 5520, max= 8192, per=75.58%, avg=6856.00, stdev=1889.39, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=19.00%, ctx=77, 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=181687: Sat Aug 29 07:21:33 2026 read: IOPS=0, BW=2339KiB/s (2395kB/s)(4096KiB/1751msec) clat (nsec): min=187555k, max=187555k, avg=187554816.00, stdev= 0.00 lat (nsec): min=187557k, max=187557k, avg=187557396.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 188], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 188], 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= 5680, max= 5680, per=62.62%, avg=5680.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4678KiB/s (4791kB/s)(8192KiB/1751msec); 0 zone resets clat (msec): min=628, max=870, avg=749.79, stdev=171.03 lat (msec): min=629, max=871, avg=750.08, stdev=171.06 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 869], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8192, max= 8192, per=50.83%, 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%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=19.71%, ctx=84, 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=181688: Sat Aug 29 07:21:33 2026 write: IOPS=1, BW=6044KiB/s (6189kB/s)(12.0MiB/2033msec); 0 zone resets clat (msec): min=168, max=1091, avg=659.34, stdev=464.54 lat (msec): min=168, max=1092, avg=659.75, stdev=464.71 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8192, max= 8192, per=50.83%, 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%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.90%, ctx=63, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181690: Sat Aug 29 07:21:33 2026 write: IOPS=1, BW=6126KiB/s (6273kB/s)(12.0MiB/2006msec); 0 zone resets clat (msec): min=121, max=1472, avg=659.44, stdev=716.35 lat (msec): min=121, max=1472, avg=659.79, stdev=716.42 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 122], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 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=12525, max=12525, per=77.71%, avg=12525.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.07%, ctx=84, 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=9072KiB/s (9290kB/s), 2339KiB/s-6804KiB/s (2395kB/s-6967kB/s), io=16.0MiB (16.8MB), run=1751-1806msec WRITE: bw=15.7MiB/s (16.5MB/s), 4678KiB/s-6126KiB/s (4791kB/s-6273kB/s), io=32.0MiB (33.6MB), run=1751-2033msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181689: Sat Aug 29 07:21:34 2026 read: IOPS=1, BW=8005KiB/s (8197kB/s)(12.0MiB/1535msec) clat (msec): min=409, max=618, avg=503.27, stdev=105.89 lat (msec): min=409, max=618, avg=503.27, stdev=105.90 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 6159, max= 8192, per=87.16%, avg=7175.50, stdev=1437.55, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=49.67%, ctx=2628, 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=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=181691: Sat Aug 29 07:21:34 2026 read: IOPS=0, BW=2058KiB/s (2108kB/s)(4096KiB/1990msec) clat (nsec): min=498774k, max=498774k, avg=498773712.00, stdev= 0.00 lat (nsec): min=498775k, max=498775k, avg=498774549.00, 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= 5936, max= 5936, per=72.10%, avg=5936.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4117KiB/s (4215kB/s)(8192KiB/1990msec); 0 zone resets clat (msec): min=589, max=870, avg=729.95, stdev=198.99 lat (msec): min=589, max=870, avg=730.36, stdev=198.87 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 869], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8192, max= 8192, per=52.53%, 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%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=22.88%, ctx=875, 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=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=181692: Sat Aug 29 07:21:34 2026 write: IOPS=1, BW=5849KiB/s (5989kB/s)(12.0MiB/2101msec); 0 zone resets clat (msec): min=59, max=1611, avg=691.49, stdev=814.98 lat (msec): min=59, max=1611, avg=691.80, stdev=814.90 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 59], | 30.00th=[ 59], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8192, max= 8192, per=52.53%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=12.00%, ctx=55, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181693: Sat Aug 29 07:21:34 2026 write: IOPS=1, BW=6603KiB/s (6761kB/s)(12.0MiB/1861msec); 0 zone resets clat (msec): min=180, max=1451, avg=605.04, stdev=733.45 lat (msec): min=180, max=1452, avg=605.46, stdev=733.36 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 184], | 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] bw ( KiB/s): min=11586, max=11586, per=74.29%, avg=11586.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=15.00%, ctx=54, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=8233KiB/s (8431kB/s), 2058KiB/s-8005KiB/s (2108kB/s-8197kB/s), io=16.0MiB (16.8MB), run=1535-1990msec WRITE: bw=15.2MiB/s (15.0MB/s), 4117KiB/s-6603KiB/s (4215kB/s-6761kB/s), io=32.0MiB (33.6MB), run=1861-2101msec