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: [mmm] [50.0% done] [ 14823/ 80318 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18606, got signal=6
Threads: 2: [mm_] [50.0% done] [ 14394/ 36619 kb/s] [eta 00m:04s]
Threads: 2: [mm_] [55.6% done] [ 10054/ 25564 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18604, got signal=6
Threads: 1: [_m_] [54.5% done] [  2371/     0 kb/s] [eta 00m:05s]
Threads: 1: [_m_] [58.3% done] [  1134/     0 kb/s] [eta 00m:05s]
Threads: 1: [_m_] [57.1% done] [   654/     0 kb/s] [eta 00m:06s]
Threads: 1: [_m_] [60.0% done] [  1869/     0 kb/s] [eta 00m:06s]
Threads: 1: [_F_] [100.0% done] [   886/ 15049 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_] [72.7% done] [  9281/     0 kb/s] [eta 00m:06s]
Threads: 1: [_V_] [100.0% done] [ 47870/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=18604
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=71.5%, 4=5.6%, 8=22.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=58.1%, 4=13.6%, 10=1.0%, 20=1.9%, 50=7.9%, 100=11.7%
     lat (msec): 250=5.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18605
  read : io=100MiB, bw=6,056KiB/s, runt= 17310msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  526, avg=47.85, stdev=83.41
    bw (KiB/s) : min=   25, max=45244, per=91.29%, avg=7948.67, stdev=12827.83
  write: io=63,816KiB, bw=4,123KiB/s, runt= 15847msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  115, avg= 1.60, stdev= 8.02
    bw (KiB/s) : min=    0, max=25295, per=67.11%, avg=9704.00, stdev=13636.42
  cpu          : usr=7.44%, sys=4.27%, ctx=6354
  IO depths    : 1=5.1%, 2=44.7%, 4=24.1%, 8=26.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=37.7%, 4=12.5%, 10=18.0%, 20=7.1%, 50=7.1%, 100=8.8%
     lat (msec): 250=4.7%, 500=3.6%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18606
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=86.4%, 4=3.6%, 8=9.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=70.5%, 4=16.0%, 10=2.3%, 20=0.4%, 50=2.3%, 100=2.8%
     lat (msec): 250=5.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=144MiB, aggrb=8,707KiB/s, minb=0KiB/s, maxb=6,056KiB/s, mint=0msec, maxt=17310msec
  WRITE: io=219MiB, aggrb=14,459KiB/s, minb=0KiB/s, maxb=4,123KiB/s, mint=0msec, maxt=17310msec

Disk stats (read/write):
  cciss!c0d0: ios=2284/3834, merge=9816/51957, ticks=69892/1590580, in_queue=1661292, util=96.08%
4.15user 1.54system 0:17.63elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
365856inputs+447584outputs (0major+2467minor)pagefaults 0swaps