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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27122, got signal=6
Threads: 2: [mm_] [37.5% done] [ 14443/ 63054 kb/s] [eta 00m:05s]
Threads: 2: [mm_] [40.0% done] [ 11950/ 17135 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27120, got signal=6
Threads: 1: [_m_] [62.5% done] [  6940/ 28598 kb/s] [eta 00m:03s]
Threads: 1: [_F_] [100.0% done] [   637/  6672 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_] [94.1% done] [ 38070/     0 kb/s] [eta 00m:01s]
fio: (groupid=0): err= 0: pid=27120
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=6.9%, 2=42.0%, 4=31.3%, 8=19.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=21.1%, 4=16.3%, 10=39.5%, 20=7.1%, 50=7.0%, 100=5.5%
     lat (msec): 250=3.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27121
  read : io=100MiB, bw=6,282KiB/s, runt= 16691msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  447, avg=26.76, stdev=48.34
    bw (KiB/s) : min=   26, max=53821, per=172.69%, avg=13487.23, stdev=17878.90
  write: io=64,552KiB, bw=4,302KiB/s, runt= 15364msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  143, avg= 1.42, stdev= 7.81
    bw (KiB/s) : min=    0, max=25051, per=64.94%, avg=10572.67, stdev=12974.16
  cpu          : usr=8.03%, sys=3.67%, ctx=6165
  IO depths    : 1=0.9%, 2=48.4%, 4=29.6%, 8=21.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=37.0%, 4=13.0%, 10=27.1%, 20=5.9%, 50=6.7%, 100=6.0%
     lat (msec): 250=3.7%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27122
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=90.7%, 4=3.6%, 8=5.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.1%, 4=14.5%, 10=1.2%, 20=0.1%, 50=0.4%, 100=3.7%
     lat (msec): 250=1.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=124MiB, aggrb=7,810KiB/s, minb=0KiB/s, maxb=6,282KiB/s, mint=0msec, maxt=16691msec
  WRITE: io=239MiB, aggrb=16,280KiB/s, minb=0KiB/s, maxb=4,302KiB/s, mint=0msec, maxt=16691msec

Disk stats (read/write):
  cciss!c0d0: ios=2891/3912, merge=623/56913, ticks=18732/1542728, in_queue=1564256, util=95.41%
3.95user 1.44system 0:17.02elapsed 31%CPU (0avgtext+0avgdata 0maxresident)k
344400inputs+488656outputs (0major+2471minor)pagefaults 0swaps