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] [15.0% done] [ 18031/  5934 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 11609/ 11544 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 14813/  5653 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 17258/  4165 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [31.8% done] [  5141/ 12991 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [36.4% done] [  7382/ 11226 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [39.1% done] [  9211/  8630 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 13870/  2074 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9286/  4535 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 11999/  3791 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6528/  6796 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  7899/  2822 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4876/  6172 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5747/  4152 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  8358/  1179 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3856, got signal=6
Threads: 2: [mm_] [62.1% done] [  7797/  1151 kb/s] [eta 00m:11s]
Threads: 2: [mm_] [63.3% done] [  4584/  2635 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3855, got signal=6
Threads: 1: [m__] [66.7% done] [  4600/  2387 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3854, got signal=6

fio: (groupid=0): err= 0: pid=3854
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.6%, 8=91.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.4%, 20=3.8%, 50=16.5%, 100=34.9%
     lat (msec): 250=42.8%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3855
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.1%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=12.8%, 100=41.0%
     lat (msec): 250=45.0%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3856
  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=0.0%, 20=1.9%, 50=8.8%, 100=44.7%
     lat (msec): 250=44.2%, 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=3361/2188, merge=413/204, ticks=38564/32916, in_queue=71484, util=98.48%
0.24user 0.60system 0:20.84elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
385752inputs+228392outputs (0major+2454minor)pagefaults 0swaps