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] [23.1% done] [  1873/ 57689 kb/s] [eta 00m:10s]
Threads: 3: [mFm] [25.0% done] [  3685/  3176 kb/s] [eta 00m:12s]
Threads: 3: [mFm] [25.0% done] [   654/ 29957 kb/s] [eta 00m:15s]
Threads: 3: [mFm] [25.0% done] [   894/     0 kb/s] [eta 00m:18s]
Threads: 3: [mVm] [30.4% done] [  2202/  7818 kb/s] [eta 00m:16s]
Threads: 3: [mVF] [61.5% done] [ 13003/ 51222 kb/s] [eta 00m:05s]
Threads: 3: [mVF] [60.0% done] [ 21223/   849 kb/s] [eta 00m:06s]
Threads: 3: [mVF] [62.5% done] [ 21065/     0 kb/s] [eta 00m:06s]
Threads: 3: [mVF] [64.7% done] [ 24909/  5115 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16911, got signal=6
Threads: 2: [_VF] [100.0% done] [  4047/  5111 kb/s] [eta 00m:00s]
Threads: 2: [_VF] [100.0% done] [  3233/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VF] [100.0% done] [ 15713/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [68.2% done] [  4124/     0 kb/s] [eta 00m:07s]
Threads: 1: [__V] [84.2% done] [ 23721/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [100.0% done] [ 22208/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 24498/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=16911
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=63.4%, 2=22.6%, 4=2.8%, 8=11.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=85.2%, 4=0.3%, 10=0.1%, 20=0.7%, 50=1.9%, 100=0.6%
     lat (msec): 250=5.2%, 500=3.2%, 750=1.3%, 1000=0.4%, >=2000=0.9%
fio: (groupid=0): err= 0: pid=16912
  read : io=100MiB, bw=7,306KiB/s, runt= 14303msec
    clat (msec): min=    0, max=  689, avg=32.46, stdev=80.07
    bw (KiB/s) : min=   19, max=31638, per=113.97%, avg=13528.23, stdev=11297.47
  write: io=100MiB, bw=15,007KiB/s, runt=  6987msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    7, avg= 0.85, stdev= 1.16
    bw (KiB/s) : min=    0, max=60604, per=213.32%, avg=40383.67, stdev=34973.29
  cpu          : usr=12.00%, sys=5.03%, ctx=7628
  IO depths    : 1=15.1%, 2=44.6%, 4=29.6%, 8=10.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.9%, 4=15.7%, 10=11.7%, 20=12.0%, 50=12.3%, 100=0.9%
     lat (msec): 250=1.0%, 500=1.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16913
  read : io=100MiB, bw=5,483KiB/s, runt= 19122msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1275, avg=44.70, stdev=121.21
    bw (KiB/s) : min=    7, max=26997, per=86.00%, avg=10208.33, stdev=11285.11
  write: io=90,876KiB, bw=6,179KiB/s, runt= 15059msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  455, avg= 2.89, stdev=24.72
    bw (KiB/s) : min=    0, max=61595, per=121.99%, avg=23094.50, stdev=28611.91
  cpu          : usr=8.30%, sys=3.83%, ctx=8111
  IO depths    : 1=16.5%, 2=36.5%, 4=30.4%, 8=16.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=40.1%, 4=8.6%, 10=9.3%, 20=16.1%, 50=20.6%, 100=1.2%
     lat (msec): 250=2.2%, 500=0.7%, 750=0.5%, 1000=0.5%, >=2000=0.1%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=11,870KiB/s, minb=0KiB/s, maxb=7,306KiB/s, mint=14303msec, maxt=19122msec
  WRITE: io=272MiB, aggrb=18,931KiB/s, minb=0KiB/s, maxb=15,007KiB/s, mint=14303msec, maxt=19122msec

Disk stats (read/write):
  cciss!c0d0: ios=3897/3848, merge=692/65750, ticks=67416/1773392, in_queue=1840816, util=98.53%
4.68user 1.92system 0:19.43elapsed 33%CPU (0avgtext+0avgdata 0maxresident)k
488472inputs+556960outputs (0major+2470minor)pagefaults 0swaps