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] [ 19621/  2521 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 18909/  1118 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 13085/  4409 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  8460/  9309 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  9849/  8736 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  9570/  8362 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 12036/  5721 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  4388/  9973 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7533/  8257 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9252/  4254 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  5279/  8122 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8924/  4157 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  7268/  3575 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6255/  5812 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4303/  3786 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  3579/  5401 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6089/  2066 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19222, got signal=6
Threads: 2: [m_m] [64.5% done] [  5912/  1540 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19221, got signal=6
Threads: 1: [__m] [65.6% done] [  2993/  3111 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19223, got signal=6

fio: (groupid=0): err= 0: pid=19221
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.6%, 8=96.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=8.3%, 100=41.5%
     lat (msec): 250=48.6%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19222
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=5.6%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.3%, 20=0.8%, 50=8.1%, 100=45.5%
     lat (msec): 250=44.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19223
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.8%, 50=8.7%, 100=42.5%
     lat (msec): 250=45.3%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3797/2328, merge=785/120, ticks=47140/34964, in_queue=82100, util=99.05%
0.21user 0.37system 0:21.82elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
410064inputs+204136outputs (0major+2458minor)pagefaults 0swaps