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] [ 14338/  6471 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 15265/  5515 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 20074/  1033 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 20654/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [  8472/ 10459 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  6410/ 11336 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  7915/  9489 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  4994/ 10040 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  7321/  6365 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9591/  5702 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7817/  5474 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6882/  4270 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  5377/  5430 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  4376/  5625 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6540/  3245 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  9001/   699 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1238, got signal=6
Threads: 2: [mm_] [63.3% done] [  8086/   606 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1236, got signal=6
Threads: 1: [_m_] [64.5% done] [  7207/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1237, got signal=6

fio: (groupid=0): err= 0: pid=1236
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.8%, 8=91.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.2%, 20=2.1%, 50=9.4%, 100=49.1%
     lat (msec): 250=38.6%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1237
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.4%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=3.2%, 50=11.0%, 100=46.8%
     lat (msec): 250=37.4%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1238
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.6%, 50=9.7%, 100=48.7%
     lat (msec): 250=38.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3835/2087, merge=668/183, ticks=42516/29868, in_queue=72396, util=98.91%
0.19user 0.53system 0:21.32elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
403800inputs+210600outputs (0major+2459minor)pagefaults 0swaps