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] [14.3% done] [ 14738/  6968 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 16404/  4547 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 14065/  6080 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10620/  8619 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 13833/  3583 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 17724/   520 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 11145/  5991 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11372/  3506 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  3973/  9635 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  6777/  6599 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7394/  6491 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  3315/  8196 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7870/  3482 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  3668/  6036 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8411/  2200 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5596/  3473 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5474/  2924 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5101, got signal=6
Threads: 2: [m_m] [66.7% done] [  6800/   113 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5102, got signal=6
Threads: 1: [m__] [67.7% done] [  1134/  4303 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5100, got signal=6

fio: (groupid=0): err= 0: pid=5100
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.8%, 8=96.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=9.8%, 100=42.4%
     lat (msec): 250=45.9%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5101
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.8%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.2%, 50=10.2%, 100=42.4%
     lat (msec): 250=44.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5102
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=9.0%, 100=43.4%
     lat (msec): 250=45.2%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3600/2202, merge=680/184, ticks=44116/29844, in_queue=73952, util=98.37%
0.30user 0.67system 0:22.03elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
405688inputs+208352outputs (0major+2460minor)pagefaults 0swaps