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] [ 21476/     0 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 16481/  5588 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 12609/  7158 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 10660/  7915 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 14537/  2652 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14077/  3880 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 13333/  4348 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [41.7% done] [  7448/  8992 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [   817/ 12410 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  8968/  5422 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  4340/  8879 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  5721/  5916 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  4429/  6757 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7313/  2855 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  3331/  5544 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  9408/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29875, got signal=6
Threads: 2: [m_m] [61.3% done] [  7443/     0 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [64.5% done] [  4380/  2763 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [65.6% done] [  5487/  2074 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29876, got signal=6
Threads: 2: [m_m] [66.7% done] [  1626/     0 kb/s] [eta 00m:11s]
fio: pid=29874, got signal=6

fio: (groupid=0): err= 0: pid=29874
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.1%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=1.8%, 50=11.3%, 100=42.2%
     lat (msec): 250=42.9%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29875
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=10.7%, 100=45.2%
     lat (msec): 250=42.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29876
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=12.6%, 100=36.8%
     lat (msec): 250=47.5%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3784/2359, merge=630/141, ticks=46248/33160, in_queue=79400, util=94.25%
0.19user 0.35system 0:23.08elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
402432inputs+211840outputs (0major+2461minor)pagefaults 0swaps