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] [13.0% done] [  6395/ 13913 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 18214/  2281 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 14319/  6387 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [  5462/ 11559 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  9924/  9094 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  8570/  9033 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [  8069/  9729 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [  7866/  5816 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [  7130/  7777 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [  6638/  6467 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  6202/  7915 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.3% done] [  6377/  5499 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.7% done] [  7911/  3803 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [  7207/  3815 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [54.8% done] [  4970/  3982 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [58.1% done] [  4620/  2851 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24437, got signal=6
Threads: 2: [m_m] [59.4% done] [  2159/  4836 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [60.6% done] [  5104/  2074 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24436, got signal=6
Threads: 1: [__m] [63.6% done] [   711/  5885 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24438, got signal=6

fio: (groupid=0): err= 0: pid=24436
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.2%, 8=96.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=7.6%, 100=45.3%
     lat (msec): 250=45.6%, 500=0.4%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24437
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=10.1%, 100=54.5%
     lat (msec): 250=34.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24438
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=8.0%, 8=91.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=0.0%, 20=3.3%, 50=21.2%, 100=19.6%
     lat (msec): 250=53.7%, 500=0.6%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3330/2807, merge=410/196, ticks=40872/38452, in_queue=79312, util=99.22%
0.19user 0.36system 0:22.19elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
358032inputs+255936outputs (0major+2465minor)pagefaults 0swaps