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=13084, got signal=6
Threads: 2
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13083, got signal=6
Threads: 1: [__m] [60.0% done] [  7818/ 44214 kb/s] [eta 00m:02s]
Threads: 1: [__F] [100.0% done] [  4603/ 15611 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: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [83.3% done] [ 23799/     0 kb/s] [eta 00m:03s]
fio: (groupid=0): err= 0: pid=13083
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=64.7%, 2=28.5%, 4=3.1%, 8=3.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.4%, 4=0.1%, 10=0.0%, 20=0.4%, 50=0.3%, 100=3.5%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13084
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=89.2%, 4=7.4%, 8=3.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.9%, 4=15.5%, 10=1.9%, 20=0.2%, 50=0.6%, 100=2.1%
     lat (msec): 250=0.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13085
  read : io=100MiB, bw=6,565KiB/s, runt= 15968msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  110, avg=15.02, stdev=23.09
    bw (KiB/s) : min=    9, max=57823, per=250.39%, avg=17637.50, stdev=21557.52
  write: io=71,644KiB, bw=5,019KiB/s, runt= 14616msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   51, avg= 1.01, stdev= 3.90
    bw (KiB/s) : min=    0, max=27722, per=82.92%, avg=15623.00, stdev=14193.00
  cpu          : usr=9.72%, sys=5.09%, ctx=5655
  IO depths    : 1=3.0%, 2=55.3%, 4=25.0%, 8=16.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.4%, 4=15.0%, 10=20.4%, 20=4.2%, 50=6.5%, 100=5.7%
     lat (msec): 250=0.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=107MiB, aggrb=7,044KiB/s, minb=0KiB/s, maxb=6,565KiB/s, mint=15968msec, maxt=15968msec
  WRITE: io=263MiB, aggrb=18,841KiB/s, minb=0KiB/s, maxb=5,019KiB/s, mint=15968msec, maxt=15968msec

Disk stats (read/write):
  cciss!c0d0: ios=1425/4003, merge=19297/62976, ticks=44676/1540388, in_queue=1586612, util=90.51%
4.26user 1.52system 0:16.32elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k
280864inputs+537976outputs (0major+2468minor)pagefaults 0swaps