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] [12.5% done] [ 14006/  6400 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [  4173/ 16294 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 18501/  1336 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  8460/ 10872 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  7146/  9867 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 11437/  5381 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 11999/  4331 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 14024/  1602 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 14634/  2578 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  9111/  4287 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 11255/  3161 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6796/  4108 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  3217/  7317 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  6390/  4218 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7463/  2420 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  8525/  1610 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  7748/  2713 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25922, got signal=6
Threads: 2: [_mm] [64.5% done] [  6117/   837 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25923, got signal=6
Threads: 1: [__m] [65.6% done] [  7370/     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=25924, got signal=6

fio: (groupid=0): err= 0: pid=25922
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.1%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=1.1%, 50=8.6%, 100=47.9%
     lat (msec): 250=41.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25923
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=7.9%, 100=52.9%
     lat (msec): 250=36.3%, 500=0.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25924
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.9%, 50=11.1%, 100=40.2%
     lat (msec): 250=44.2%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4151/2062, merge=506/145, ticks=48580/32528, in_queue=81108, util=99.09%
0.22user 0.49system 0:21.76elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
417136inputs+197424outputs (0major+2461minor)pagefaults 0swaps