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] [13.0% done] [ 12231/ 10386 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 11022/ 10591 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 12963/  4917 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 13626/  4433 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 13186/  7390 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 12023/  5369 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 14285/  2993 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 11560/  4461 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  8907/  3880 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9127/  5259 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9351/  3396 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10233/  2306 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  3664/  6870 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7158/  1557 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6178/  1480 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7345/  1928 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [   646/  6691 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21519, got signal=6
Threads: 2: [m_m] [62.5% done] [  3380/  4433 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [65.6% done] [  3843/  3432 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21518, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21520, got signal=6

fio: (groupid=0): err= 0: pid=21518
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=8.8%, 100=41.2%
     lat (msec): 250=47.2%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21519
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.3%, 8=96.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=8.5%, 100=47.2%
     lat (msec): 250=43.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21520
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.2%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.5%, 20=3.2%, 50=7.3%, 100=43.1%
     lat (msec): 250=44.1%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3653/2216, merge=637/282, ticks=44212/32556, in_queue=76760, util=99.03%
0.18user 0.38system 0:22.10elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
407456inputs+206776outputs (0major+2459minor)pagefaults 0swaps