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] [ 13507/  7631 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  9455/ 10626 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [ 18110/  4705 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 20496/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12304/  5611 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 15079/  3628 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  8842/  6420 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 14736/   874 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  8163/  7212 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10240/  3006 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  8257/  5709 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5709/  5627 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6351/  5071 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7086/  2913 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5266/  4388 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4457/  4408 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3132/  3921 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19392, got signal=6
Threads: 2: [m_m] [66.7% done] [  5420/  1987 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19393, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19391, got signal=6

fio: (groupid=0): err= 0: pid=19391
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.1%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=0.8%, 50=7.5%, 100=51.0%
     lat (msec): 250=39.3%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19392
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.3%, 50=8.7%, 100=50.5%
     lat (msec): 250=39.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19393
  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=0.2%, 20=2.5%, 50=7.9%, 100=46.4%
     lat (msec): 250=42.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3815/2190, merge=722/80, ticks=45344/30316, in_queue=75652, util=99.32%
0.26user 0.54system 0:21.43elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
422024inputs+192312outputs (0major+2450minor)pagefaults 0swaps