random-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=4
...
fio-3.42
Starting 4 processes
random-write: Laying out IO file (1 file / 256MiB)
random-write: Laying out IO file (1 file / 256MiB)
random-write: Laying out IO file (1 file / 256MiB)
random-write: Laying out IO file (1 file / 256MiB)
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1

random-write: (groupid=0, jobs=1): err= 0: pid=1146: Sun Jun  7 20:44:19 2026
  write: IOPS=128k, BW=501MiB/s (525MB/s)(29.4GiB/60163msec)
    clat (nsec): min=1560, max=1624.0k, avg=2893.94, stdev=10869.36
     lat (nsec): min=1640, max=1624.0k, avg=2973.64, stdev=11006.74
    clat percentiles (nsec):
     |  1.00th=[  1848],  5.00th=[  1960], 10.00th=[  2040], 20.00th=[  2160],
     | 30.00th=[  2256], 40.00th=[  2320], 50.00th=[  2416], 60.00th=[  2480],
     | 70.00th=[  2608], 80.00th=[  2736], 90.00th=[  3056], 95.00th=[  4384],
     | 99.00th=[ 11072], 99.50th=[ 12864], 99.90th=[ 25984], 99.95th=[ 64256],
     | 99.99th=[634880]
   bw (  KiB/s): min=35496, max=936824, per=25.16%, avg=517917.71, stdev=117141.27, samples=118
   iops        : min= 8874, max=234206, avg=129479.31, stdev=29285.33, samples=118
  lat (usec)   : 2=5.25%, 4=89.09%, 10=4.29%, 20=1.19%, 50=0.13%
  lat (usec)   : 100=0.01%, 250=0.02%, 500=0.01%, 750=0.02%, 1000=0.01%
  lat (msec)   : 2=0.01%
  cpu          : usr=7.00%, sys=56.78%, ctx=7303, 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=0,7710233,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0.00ns, window=0.00ns, percentile=100.00%, depth=4
random-write: (groupid=0, jobs=1): err= 0: pid=1147: Sun Jun  7 20:44:19 2026
  write: IOPS=128k, BW=501MiB/s (526MB/s)(29.4GiB/60159msec)
    clat (nsec): min=1560, max=4331.0k, avg=2844.19, stdev=9728.76
     lat (nsec): min=1640, max=4331.1k, avg=2922.72, stdev=9845.54
    clat percentiles (nsec):
     |  1.00th=[  1848],  5.00th=[  1960], 10.00th=[  2040], 20.00th=[  2160],
     | 30.00th=[  2256], 40.00th=[  2320], 50.00th=[  2416], 60.00th=[  2480],
     | 70.00th=[  2608], 80.00th=[  2736], 90.00th=[  3056], 95.00th=[  4384],
     | 99.00th=[ 10944], 99.50th=[ 12736], 99.90th=[ 25216], 99.95th=[ 44800],
     | 99.99th=[585728]
   bw (  KiB/s): min=41408, max=964040, per=25.16%, avg=518004.35, stdev=124050.73, samples=119
   iops        : min=10352, max=241010, avg=129500.97, stdev=31012.70, samples=119
  lat (usec)   : 2=5.34%, 4=88.93%, 10=4.40%, 20=1.15%, 50=0.13%
  lat (usec)   : 100=0.01%, 250=0.02%, 500=0.01%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%
  cpu          : usr=6.46%, sys=56.32%, ctx=6107, 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=0,7719273,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0.00ns, window=0.00ns, percentile=100.00%, depth=4
random-write: (groupid=0, jobs=1): err= 0: pid=1148: Sun Jun  7 20:44:19 2026
  write: IOPS=130k, BW=507MiB/s (532MB/s)(29.8GiB/60039msec)
    clat (nsec): min=1560, max=4436.4k, avg=3009.66, stdev=14700.72
     lat (nsec): min=1640, max=4436.5k, avg=3093.44, stdev=14903.99
    clat percentiles (nsec):
     |  1.00th=[  1848],  5.00th=[  1960], 10.00th=[  2040], 20.00th=[  2160],
     | 30.00th=[  2256], 40.00th=[  2320], 50.00th=[  2416], 60.00th=[  2480],
     | 70.00th=[  2608], 80.00th=[  2736], 90.00th=[  3056], 95.00th=[  4384],
     | 99.00th=[ 10944], 99.50th=[ 12864], 99.90th=[ 30848], 99.95th=[228352],
     | 99.99th=[700416]
   bw (  KiB/s): min=95696, max=855073, per=25.31%, avg=521027.94, stdev=121785.72, samples=119
   iops        : min=23924, max=213768, avg=130256.85, stdev=30446.45, samples=119
  lat (usec)   : 2=5.24%, 4=88.96%, 10=4.46%, 20=1.13%, 50=0.13%
  lat (usec)   : 100=0.01%, 250=0.02%, 500=0.01%, 750=0.03%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%
  cpu          : usr=6.71%, sys=60.74%, ctx=5419, 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=0,7798785,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0.00ns, window=0.00ns, percentile=100.00%, depth=4
random-write: (groupid=0, jobs=1): err= 0: pid=1149: Sun Jun  7 20:44:19 2026
  write: IOPS=129k, BW=503MiB/s (528MB/s)(29.5GiB/60039msec)
    clat (nsec): min=1560, max=3281.2k, avg=2957.11, stdev=12178.61
     lat (nsec): min=1640, max=3281.3k, avg=3037.18, stdev=12306.27
    clat percentiles (nsec):
     |  1.00th=[  1880],  5.00th=[  2008], 10.00th=[  2096], 20.00th=[  2160],
     | 30.00th=[  2256], 40.00th=[  2320], 50.00th=[  2416], 60.00th=[  2480],
     | 70.00th=[  2608], 80.00th=[  2736], 90.00th=[  3056], 95.00th=[  4384],
     | 99.00th=[ 10944], 99.50th=[ 12864], 99.90th=[ 29568], 99.95th=[154624],
     | 99.99th=[643072]
   bw (  KiB/s): min=123880, max=893872, per=25.31%, avg=521041.12, stdev=127714.05, samples=118
   iops        : min=30970, max=223468, avg=130260.17, stdev=31928.54, samples=118
  lat (usec)   : 2=4.66%, 4=89.61%, 10=4.40%, 20=1.12%, 50=0.14%
  lat (usec)   : 100=0.01%, 250=0.02%, 500=0.01%, 750=0.03%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%
  cpu          : usr=6.34%, sys=59.60%, ctx=4563, 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=0,7733249,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0.00ns, window=0.00ns, percentile=100.00%, depth=4

Run status group 0 (all jobs):
  WRITE: bw=2010MiB/s (2108MB/s), 501MiB/s-507MiB/s (525MB/s-532MB/s), io=118GiB (127GB), run=60039-60163msec

Disk stats (read/write):
  vdb: ios=5/299155, sectors=408/246683944, merge=0/570, ticks=2/3155495, in_queue=3155497, util=77.64%
