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] [ 18698/  3754 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  9993/ 10197 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 11563/  7427 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  9160/  9660 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 12145/  3969 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [33.3% done] [ 12300/  6032 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 12418/  5266 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  4738/ 11012 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7545/  7305 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9989/  3998 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7793/  4177 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10966/  1448 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  4851/  5185 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  3624/  5434 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4742/  5544 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  5523/  3921 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  5869/  3054 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  4055/  4230 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12573, got signal=6
Threads: 2: [m_m] [65.6% done] [  3782/  3319 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12572, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12574, got signal=6

fio: (groupid=0): err= 0: pid=12572
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 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=0.1%, 20=1.4%, 50=8.2%, 100=41.0%
     lat (msec): 250=48.1%, 500=0.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12573
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=4.6%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=1.1%, 50=9.1%, 100=45.6%
     lat (msec): 250=43.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12574
  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=0.1%, 50=8.8%, 100=47.7%
     lat (msec): 250=41.9%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3520/2725, merge=645/212, ticks=43644/42604, in_queue=86240, util=99.30%
0.18user 0.50system 0:22.50elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
372560inputs+241760outputs (0major+2471minor)pagefaults 0swaps