random-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=4
...
fio-3.41
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=1313: Sun Apr 12 12:54:30 2026
  write: IOPS=169k, BW=659MiB/s (691MB/s)(38.9GiB/60360msec); 0 zone resets
    clat (nsec): min=1623, max=40110k, avg=4313.29, stdev=42428.17
     lat (nsec): min=1719, max=40110k, avg=4427.18, stdev=43172.61
    clat percentiles (nsec):
     |  1.00th=[  1928],  5.00th=[  2128], 10.00th=[  2320], 20.00th=[  2832],
     | 30.00th=[  3216], 40.00th=[  3568], 50.00th=[  3984], 60.00th=[  4448],
     | 70.00th=[  4768], 80.00th=[  5152], 90.00th=[  5536], 95.00th=[  5792],
     | 99.00th=[  7072], 99.50th=[  8256], 99.90th=[ 25728], 99.95th=[ 44288],
     | 99.99th=[577536]
   bw (  KiB/s): min=436384, max=979184, per=25.21%, avg=679846.10, stdev=117767.86, samples=119
   iops        : min=109096, max=244796, avg=169961.45, stdev=29441.99, samples=119
  lat (usec)   : 2=2.12%, 4=47.96%, 10=49.57%, 20=0.21%, 50=0.10%
  lat (usec)   : 100=0.02%, 250=0.01%, 500=0.01%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%
  cpu          : usr=18.68%, sys=71.63%, ctx=1378, 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=0,10186288,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=4
random-write: (groupid=0, jobs=1): err= 0: pid=1314: Sun Apr 12 12:54:30 2026
  write: IOPS=166k, BW=647MiB/s (678MB/s)(38.0GiB/60188msec); 0 zone resets
    clat (nsec): min=1652, max=22370k, avg=4417.43, stdev=42134.99
     lat (nsec): min=1750, max=22370k, avg=4531.42, stdev=42412.56
    clat percentiles (nsec):
     |  1.00th=[  1960],  5.00th=[  2160], 10.00th=[  2384], 20.00th=[  2896],
     | 30.00th=[  3280], 40.00th=[  3664], 50.00th=[  4128], 60.00th=[  4576],
     | 70.00th=[  4896], 80.00th=[  5216], 90.00th=[  5536], 95.00th=[  5856],
     | 99.00th=[  7072], 99.50th=[  8384], 99.90th=[ 27264], 99.95th=[ 46336],
     | 99.99th=[659456]
   bw (  KiB/s): min=357248, max=958680, per=24.63%, avg=664038.81, stdev=111953.04, samples=119
   iops        : min=89312, max=239670, avg=166009.64, stdev=27988.29, samples=119
  lat (usec)   : 2=1.59%, 4=45.33%, 10=52.72%, 20=0.21%, 50=0.10%
  lat (usec)   : 100=0.02%, 250=0.01%, 500=0.01%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%
  cpu          : usr=18.96%, sys=71.05%, ctx=1710, 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=0,9965976,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=4
random-write: (groupid=0, jobs=1): err= 0: pid=1315: Sun Apr 12 12:54:30 2026
  write: IOPS=172k, BW=671MiB/s (704MB/s)(39.5GiB/60308msec); 0 zone resets
    clat (nsec): min=1604, max=62880k, avg=4225.66, stdev=46585.90
     lat (nsec): min=1699, max=62880k, avg=4334.66, stdev=46805.93
    clat percentiles (nsec):
     |  1.00th=[  1912],  5.00th=[  2128], 10.00th=[  2320], 20.00th=[  2768],
     | 30.00th=[  3152], 40.00th=[  3472], 50.00th=[  3856], 60.00th=[  4320],
     | 70.00th=[  4704], 80.00th=[  5088], 90.00th=[  5472], 95.00th=[  5792],
     | 99.00th=[  7072], 99.50th=[  8256], 99.90th=[ 23680], 99.95th=[ 34048],
     | 99.99th=[448512]
   bw (  KiB/s): min=429808, max=957528, per=25.66%, avg=691803.59, stdev=134748.61, samples=119
   iops        : min=107452, max=239382, avg=172950.84, stdev=33687.17, samples=119
  lat (usec)   : 2=2.28%, 4=51.08%, 10=46.28%, 20=0.23%, 50=0.09%
  lat (usec)   : 100=0.02%, 250=0.01%, 500=0.01%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%
  lat (msec)   : 100=0.01%
  cpu          : usr=18.80%, sys=71.31%, ctx=1576, 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=0,10365574,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=4
random-write: (groupid=0, jobs=1): err= 0: pid=1316: Sun Apr 12 12:54:30 2026
  write: IOPS=169k, BW=659MiB/s (691MB/s)(38.8GiB/60313msec); 0 zone resets
    clat (nsec): min=1650, max=35333k, avg=4326.81, stdev=41075.03
     lat (nsec): min=1746, max=35333k, avg=4436.06, stdev=41251.34
    clat percentiles (nsec):
     |  1.00th=[  1928],  5.00th=[  2128], 10.00th=[  2320], 20.00th=[  2800],
     | 30.00th=[  3184], 40.00th=[  3568], 50.00th=[  4048], 60.00th=[  4512],
     | 70.00th=[  4896], 80.00th=[  5216], 90.00th=[  5600], 95.00th=[  5856],
     | 99.00th=[  7072], 99.50th=[  8256], 99.90th=[ 22912], 99.95th=[ 35584],
     | 99.99th=[452608]
   bw (  KiB/s): min=425800, max=958624, per=25.19%, avg=679142.32, stdev=127409.80, samples=119
   iops        : min=106450, max=239656, avg=169785.54, stdev=31852.46, samples=119
  lat (usec)   : 2=1.97%, 4=47.30%, 10=50.39%, 20=0.22%, 50=0.08%
  lat (usec)   : 100=0.02%, 250=0.01%, 500=0.01%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%
  cpu          : usr=18.36%, sys=72.02%, ctx=1032, 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=0,10169833,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=4

Run status group 0 (all jobs):
  WRITE: bw=2633MiB/s (2761MB/s), 647MiB/s-671MiB/s (678MB/s-704MB/s), io=155GiB (167GB), run=60188-60360msec

Disk stats (read/write):
  vda: ios=0/73158, sectors=0/325341880, merge=0/142, ticks=0/1946294, in_queue=1946296, util=65.46%
