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] [8.8% done] [ 11474/  3249 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.5% done] [  8049/  7297 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [15.2% done] [ 11426/  3173 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.8% done] [ 11051/  3298 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [22.6% done] [ 11702/  3103 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.8% done] [ 10189/  6878 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [29.0% done] [ 12422/  7419 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [33.3% done] [ 14655/  4433 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [36.7% done] [ 15533/  1387 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [40.0% done] [  6215/  8423 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [43.3% done] [  7748/  6926 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [46.7% done] [  8623/  5609 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [50.0% done] [  5914/  7069 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.6% done] [  6886/  6284 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [54.8% done] [  4441/  6939 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.2% done] [  5238/  4584 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [57.6% done] [  5767/  3758 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [60.6% done] [  4498/  4600 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.8% done] [  6727/  2086 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32301, got signal=6
Threads: 2: [mm_] [61.1% done] [  2444/  3546 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32300, got signal=6
Threads: 1: [m__] [63.9% done] [  1216/  5271 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32299, got signal=6

fio: (groupid=0): err= 0: pid=32299
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.5%, 8=92.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.3%, 20=3.7%, 50=16.3%, 100=36.4%
     lat (msec): 250=32.7%, 500=9.3%, 750=0.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32300
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=10.1%, 100=49.5%
     lat (msec): 250=29.6%, 500=9.9%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32301
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=13.0%, 100=53.3%
     lat (msec): 250=24.2%, 500=8.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3640/2517, merge=394/180, ticks=50640/44284, in_queue=94916, util=99.15%
0.43user 0.34system 0:24.39elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
391640inputs+222672outputs (0major+2480minor)pagefaults 0swaps