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] [ 13856/  7062 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 17819/  4152 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 16835/  4596 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  8830/  9656 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 17600/   341 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  9294/  7687 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11584/  5190 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 10368/  4990 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9798/  5588 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10738/  4258 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9159/  4697 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7895/  3567 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6475/  5023 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8679/  2560 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8480/  2371 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  7448/  2108 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10220, got signal=6
Threads: 2: [m_m] [63.3% done] [  4340/  2948 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10219, got signal=6
Threads: 1: [__m] [64.5% done] [  5591/  1621 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10221, got signal=6

fio: (groupid=0): err= 0: pid=10219
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.3%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=0.8%, 50=8.9%, 100=45.1%
     lat (msec): 250=44.2%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10220
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=9.2%, 100=49.2%
     lat (msec): 250=39.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10221
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.0%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.5%, 20=2.9%, 50=13.7%, 100=39.3%
     lat (msec): 250=42.0%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3838/1902, merge=707/103, ticks=45076/31012, in_queue=76076, util=98.67%
0.32user 0.36system 0:21.15elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
425464inputs+188840outputs (0major+2451minor)pagefaults 0swaps