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] [ 14992/  7406 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 11694/  7691 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 15570/  5076 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  9085/  9081 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 10734/  6711 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 10418/  8521 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10783/  5507 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 10605/  5607 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 13779/  1300 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6211/  6630 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 10717/  3941 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  6861/  5125 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  5977/  5392 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6939/  4584 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8029/  1480 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  5824/  3022 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  5820/  2253 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9987, got signal=6
Threads: 2: [m_m] [64.5% done] [  2184/  5222 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9986, got signal=6
Threads: 1: [__m] [65.6% done] [  4872/  1635 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9988, got signal=6

fio: (groupid=0): err= 0: pid=9986
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=3.5%, 8=96.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.3%, 50=10.2%, 100=46.5%
     lat (msec): 250=42.1%, 500=0.4%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9987
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.5%, 8=91.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.8%, 50=11.4%, 100=51.1%
     lat (msec): 250=35.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9988
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.9%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=3.7%, 50=12.2%, 100=34.9%
     lat (msec): 250=47.2%, 500=1.1%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3889/2246, merge=567/179, ticks=45048/33564, in_queue=78612, util=98.39%
0.15user 0.68system 0:21.99elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
402968inputs+211376outputs (0major+2460minor)pagefaults 0swaps