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] [ 19919/  3088 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 13959/  5694 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 15192/  6141 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 13935/  5361 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 13422/  4514 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 11047/  7337 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  7866/  8436 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  8936/  6219 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 13418/  2176 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 15651/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 10258/  3672 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  9798/  3587 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [ 11738/  1025 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6878/  3140 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  8785/  2383 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.0% done] [  7313/   841 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19380, got signal=6
Threads: 2: [m_m] [63.3% done] [  5116/  2924 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19381, got signal=6
Threads: 1: [m__] [66.7% done] [  4921/  2428 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19379, got signal=6

fio: (groupid=0): err= 0: pid=19379
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=15.2%, 100=39.8%
     lat (msec): 250=42.7%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19380
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.5%, 50=7.9%, 100=53.9%
     lat (msec): 250=36.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19381
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=7.7%, 100=46.7%
     lat (msec): 250=43.2%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3965/1777, merge=648/137, ticks=46212/27304, in_queue=73500, util=98.61%
0.20user 0.68system 0:21.27elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
432136inputs+182208outputs (0major+2453minor)pagefaults 0swaps