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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5437, got signal=6
Threads: 2
Threads: 2: [_mm] [37.5% done] [ 14862/ 51942 kb/s] [eta 00m:05s]
Threads: 2: [_mm] [57.1% done] [ 10036/ 52207 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5438, got signal=6
Threads: 1: [__F] [100.0% done] [  5186/ 17616 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [78.9% done] [ 14600/     0 kb/s] [eta 00m:04s]
Threads: 1: [__V] [100.0% done] [ 59638/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=5437
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=98.1%, 4=1.8%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.6%, 4=13.6%, 10=1.6%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5438
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=79.1%, 4=4.1%, 8=16.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=69.8%, 4=10.1%, 10=0.4%, 20=0.2%, 50=2.8%, 100=12.2%
     lat (msec): 250=4.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5439
  read : io=100MiB, bw=6,486KiB/s, runt= 16136msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  181, avg=18.89, stdev=30.07
    bw (KiB/s) : min=    3, max=63614, per=180.48%, avg=15687.55, stdev=23382.22
  write: io=73,944KiB, bw=5,117KiB/s, runt= 14795msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  139, avg= 1.50, stdev= 9.70
    bw (KiB/s) : min=    0, max=17843, per=65.22%, avg=11010.67, stdev=9627.41
  cpu          : usr=9.47%, sys=4.07%, ctx=6775
  IO depths    : 1=7.0%, 2=45.2%, 4=28.5%, 8=19.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.2%, 4=11.5%, 10=23.0%, 20=8.7%, 50=7.3%, 100=4.0%
     lat (msec): 250=2.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=134MiB, aggrb=8,692KiB/s, minb=0KiB/s, maxb=6,486KiB/s, mint=16136msec, maxt=16136msec
  WRITE: io=238MiB, aggrb=16,883KiB/s, minb=0KiB/s, maxb=5,117KiB/s, mint=16136msec, maxt=16136msec

Disk stats (read/write):
  cciss!c0d0: ios=3008/3713, merge=736/57014, ticks=19196/1473480, in_queue=1495996, util=93.89%
4.02user 1.27system 0:16.48elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
359648inputs+488000outputs (0major+2467minor)pagefaults 0swaps