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] [ 17193/  5165 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 17771/  3298 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 10237/  7166 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  5979/ 13382 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 15802/  4279 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 14826/  3087 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  8175/  8008 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9971/  6615 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  5164/  8659 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  4002/  9825 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 11145/  3144 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6024/  5910 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6508/  5478 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5312/  4775 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8265/  2224 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  6339/  2677 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [61.3% done] [  5145/  2212 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11957, got signal=6
Threads: 2: [m_m] [62.5% done] [  2229/  4010 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11956, got signal=6
Threads: 1: [__m] [65.6% done] [  2245/  3978 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11958, got signal=6

fio: (groupid=0): err= 0: pid=11956
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=10.4%, 100=38.5%
     lat (msec): 250=49.3%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11957
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=94.0%, 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=49.3%
     lat (msec): 250=40.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11958
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=16.8%, 100=37.2%
     lat (msec): 250=43.3%, 500=0.5%, 750=0.7%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3297/2867, merge=425/196, ticks=42608/39760, in_queue=82360, util=99.11%
0.17user 0.40system 0:21.94elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
353096inputs+261184outputs (0major+2463minor)pagefaults 0swaps