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: [Fmm] [17.6% done] [ 16457/ 36953 kb/s] [eta 00m:14s]
Threads: 3: [FFm] [21.1% done] [  4779/ 38942 kb/s] [eta 00m:15s]
Threads: 3: [FFm] [45.5% done] [   991/ 36632 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27294, got signal=6
Threads: 2: [FF_] [100.0% done] [     0/ 34972 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [76.5% done] [ 39284/     0 kb/s] [eta 00m:04s]
Threads: 2: [VV_] [100.0% done] [ 62818/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [100.0% done] [ 66174/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=27292
  read : io=100MiB, bw=6,835KiB/s, runt= 15340msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  151, avg=15.44, stdev=31.18
    bw (KiB/s) : min=    0, max=41635, per=114.80%, avg=18094.30, stdev=17521.80
  write: io=96,956KiB, bw=7,997KiB/s, runt= 12415msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  111, avg= 1.24, stdev= 6.89
    bw (KiB/s) : min=    0, max=59013, per=132.93%, avg=27466.25, stdev=24245.66
  cpu          : usr=13.22%, sys=5.84%, ctx=8199
  IO depths    : 1=19.6%, 2=45.3%, 4=26.0%, 8=9.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=19.5%, 10=21.6%, 20=3.7%, 50=0.5%, 100=2.3%
     lat (msec): 250=4.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27293
  read : io=100MiB, bw=6,820KiB/s, runt= 15374msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  260, avg=23.02, stdev=41.69
    bw (KiB/s) : min=   18, max=36847, per=98.96%, avg=15598.42, stdev=13470.16
  write: io=83,108KiB, bw=6,854KiB/s, runt= 12415msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  151, avg= 2.01, stdev= 9.70
    bw (KiB/s) : min=    0, max=57884, per=125.17%, avg=25862.75, stdev=23902.09
  cpu          : usr=11.81%, sys=5.18%, ctx=6234
  IO depths    : 1=5.7%, 2=52.1%, 4=29.2%, 8=13.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.5%, 4=18.9%, 10=24.4%, 20=3.1%, 50=1.4%, 100=3.5%
     lat (msec): 250=6.1%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27294
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=77.8%, 4=6.4%, 8=15.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=70.5%, 4=9.6%, 10=1.6%, 20=0.2%, 50=0.5%, 100=7.0%
     lat (msec): 250=9.3%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=231MiB, aggrb=15,762KiB/s, minb=0KiB/s, maxb=6,835KiB/s, mint=0msec, maxt=15374msec
  WRITE: io=245MiB, aggrb=20,662KiB/s, minb=0KiB/s, maxb=7,997KiB/s, mint=0msec, maxt=15374msec

Disk stats (read/write):
  cciss!c0d0: ios=4487/3414, merge=1125/59039, ticks=36908/1330512, in_queue=1368548, util=98.09%
4.95user 2.13system 0:15.88elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k
564832inputs+501192outputs (0major+2452minor)pagefaults 0swaps