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] [13.6% done] [ 14356/  9768 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 17640/  4295 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 11203/  9545 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 12450/  7168 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 20695/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 15091/  3063 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 13540/  2965 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [ 12954/  3925 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [  9955/  6119 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  6830/  6741 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  8387/  5879 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [56.0% done] [ 11280/  1783 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [  8431/  2645 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  9500/   548 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.0% done] [  8943/  1072 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [64.3% done] [  4855/  3856 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5023, got signal=6
Threads: 2: [m_m] [65.5% done] [  4368/  3169 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5024, got signal=6
Threads: 1: [m__] [66.7% done] [  3393/  3157 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5022, got signal=6

fio: (groupid=0): err= 0: pid=5022
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=8.5%, 100=49.9%
     lat (msec): 250=39.8%, 500=1.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5023
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.6%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=7.2%, 100=50.6%
     lat (msec): 250=41.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5024
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.8%, 50=8.1%, 100=46.1%
     lat (msec): 250=42.9%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3642/1975, merge=623/146, ticks=44272/28524, in_queue=72792, util=97.14%
0.36user 0.68system 0:21.13elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
415016inputs+199176outputs (0major+2451minor)pagefaults 0swaps