fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mFm] [27.3% done] [  8944/100740 kb/s] [eta 00m:08s]
Threads: 3: [mFm] [40.0% done] [  5347/ 17944 kb/s] [eta 00m:06s]
Threads: 3: [mFm] [45.5% done] [  4079/ 29119 kb/s] [eta 00m:06s]
Threads: 3: [FFm] [54.5% done] [  1297/ 29314 kb/s] [eta 00m:05s]
Threads: 3: [FFm] [63.6% done] [  1109/ 11808 kb/s] [eta 00m:04s]
Threads: 3: [FFF] [100.0% done] [     0/  7903 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19996, got signal=6
Threads: 2: [_VV] [81.2% done] [ 44210/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 61663/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 62898/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=19996
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=4.0%, 2=77.8%, 4=5.6%, 8=12.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.0%, 4=5.3%, 10=1.5%, 20=0.1%, 50=0.9%, 100=5.1%
     lat (msec): 250=6.8%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19997
  read : io=100MiB, bw=6,833KiB/s, runt= 15345msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  359, avg=16.48, stdev=43.38
    bw (KiB/s) : min=   20, max=34478, per=136.05%, avg=20462.12, stdev=14697.87
  write: io=97,052KiB, bw=8,038KiB/s, runt= 12363msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  232, avg= 1.23, stdev=10.81
    bw (KiB/s) : min=    0, max=101613, per=253.45%, avg=54468.00, stdev=51200.78
  cpu          : usr=10.51%, sys=4.33%, ctx=6716
  IO depths    : 1=8.2%, 2=58.6%, 4=25.6%, 8=7.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.7%, 4=19.1%, 10=22.3%, 20=1.9%, 50=0.6%, 100=2.0%
     lat (msec): 250=2.9%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19998
  read : io=100MiB, bw=6,990KiB/s, runt= 15001msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  454, avg=35.27, stdev=69.51
    bw (KiB/s) : min=   10, max=36953, per=64.25%, avg=9663.61, stdev=13033.62
  write: io=80,624KiB, bw=6,677KiB/s, runt= 12363msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  255, avg= 2.53, stdev=15.20
    bw (KiB/s) : min=    0, max=13552, per=41.67%, avg=8954.75, stdev=6172.05
  cpu          : usr=11.23%, sys=5.15%, ctx=6005
  IO depths    : 1=1.4%, 2=56.6%, 4=27.2%, 8=14.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.2%, 4=14.3%, 10=24.6%, 20=4.0%, 50=2.5%, 100=3.1%
     lat (msec): 250=6.6%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=220MiB, aggrb=15,040KiB/s, minb=0KiB/s, maxb=6,990KiB/s, mint=15001msec, maxt=15345msec
  WRITE: io=253MiB, aggrb=21,491KiB/s, minb=0KiB/s, maxb=8,038KiB/s, mint=15001msec, maxt=15345msec

Disk stats (read/write):
  cciss!c0d0: ios=4423/3224, merge=727/61632, ticks=43156/1435904, in_queue=1479056, util=97.35%
4.49user 2.04system 0:15.67elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
542288inputs+518992outputs (0major+2456minor)pagefaults 0swaps