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=7669, got signal=6
Threads: 2: [Fm_] [42.9% done] [ 10087/ 79507 kb/s] [eta 00m:04s]
Threads: 2: [Fm_] [44.4% done] [  2204/     0 kb/s] [eta 00m:05s]
Threads: 2: [Fm_] [55.6% done] [  1493/ 15092 kb/s] [eta 00m:04s]
Threads: 2: [FF_] [100.0% done] [     0/ 18604 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7667, got signal=6
Threads: 1: [_V_] [81.2% done] [ 22747/     0 kb/s] [eta 00m:03s]
Threads: 1: [_V_] [100.0% done] [ 60805/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=7667
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=84.2%, 4=7.4%, 8=8.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.1%, 4=11.0%, 10=0.8%, 20=0.2%, 50=0.6%, 100=6.9%
     lat (msec): 250=2.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7668
  read : io=100MiB, bw=7,359KiB/s, runt= 14246msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  371, avg=22.17, stdev=55.16
    bw (KiB/s) : min=   15, max=65167, per=142.48%, avg=12846.42, stdev=23089.01
  write: io=86,956KiB, bw=6,987KiB/s, runt= 12743msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  174, avg= 1.31, stdev= 8.44
    bw (KiB/s) : min=    0, max=58840, per=98.72%, avg=21309.00, stdev=26165.31
  cpu          : usr=13.03%, sys=5.08%, ctx=6603
  IO depths    : 1=10.9%, 2=51.8%, 4=24.8%, 8=12.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.0%, 4=16.9%, 10=22.6%, 20=4.6%, 50=0.8%, 100=3.2%
     lat (msec): 250=2.7%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7669
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=89.0%, 4=5.2%, 8=5.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=75.2%, 4=15.7%, 10=2.0%, 20=0.4%, 50=1.7%, 100=2.0%
     lat (msec): 250=2.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=123MiB, aggrb=9,016KiB/s, minb=0KiB/s, maxb=7,359KiB/s, mint=0msec, maxt=14246msec
  WRITE: io=262MiB, aggrb=21,586KiB/s, minb=0KiB/s, maxb=6,987KiB/s, mint=0msec, maxt=14246msec

Disk stats (read/write):
  cciss!c0d0: ios=2501/3573, merge=515/63480, ticks=17600/1426996, in_queue=1444844, util=94.77%
4.48user 1.73system 0:14.55elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
305264inputs+537304outputs (0major+2468minor)pagefaults 0swaps