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=5179, got signal=6
Threads: 2: [m_m] [18.8% done] [ 14626/ 43913 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [66.7% done] [  7162/ 93288 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5180, got signal=6
Threads: 1: [F__] [100.0% done] [  2249/ 10347 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__] [75.0% done] [ 10583/     0 kb/s] [eta 00m:05s]
Threads: 1: [V__] [100.0% done] [ 60484/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=5178
  read : io=100MiB, bw=6,422KiB/s, runt= 16322msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  404, avg=16.83, stdev=36.24
    bw (KiB/s) : min=   21, max=61228, per=180.73%, avg=15365.50, stdev=23971.48
  write: io=81,496KiB, bw=5,613KiB/s, runt= 14867msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  123, avg= 1.13, stdev= 5.72
    bw (KiB/s) : min=    0, max=26195, per=72.21%, avg=12589.33, stdev=13127.04
  cpu          : usr=10.39%, sys=4.93%, ctx=6123
  IO depths    : 1=1.4%, 2=56.2%, 4=27.2%, 8=15.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.0%, 4=17.6%, 10=25.0%, 20=5.3%, 50=4.7%, 100=3.1%
     lat (msec): 250=1.9%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5179
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=14.5%, 2=79.9%, 4=3.9%, 8=1.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.5%, 4=10.7%, 10=0.6%, 20=0.0%, 50=0.1%, 100=0.4%
     lat (msec): 250=1.3%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5180
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=75.5%, 4=9.5%, 8=14.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=75.0%, 4=8.2%, 10=0.3%, 20=0.1%, 50=2.2%, 100=9.6%
     lat (msec): 250=3.9%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=132MiB, aggrb=8,502KiB/s, minb=0KiB/s, maxb=6,422KiB/s, mint=0msec, maxt=16322msec
  WRITE: io=247MiB, aggrb=17,434KiB/s, minb=0KiB/s, maxb=5,613KiB/s, mint=0msec, maxt=16322msec

Disk stats (read/write):
  cciss!c0d0: ios=2863/3968, merge=665/59108, ticks=18468/1510216, in_queue=1529588, util=92.61%
4.24user 1.52system 0:16.90elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
351808inputs+506304outputs (0major+2473minor)pagefaults 0swaps