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] [12.0% done] [ 18873/  1435 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [ 11617/  7854 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.8% done] [ 16815/  5023 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 17209/  2200 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  5071/ 12381 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 14512/  4645 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 10384/  6849 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [ 12808/  2708 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [42.3% done] [ 11771/  4360 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  7309/  4539 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 14598/    97 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6054/  5924 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  3717/  7829 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  5739/  4986 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  7439/  2826 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  8143/  1387 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25734, got signal=6
Threads: 2: [m_m] [61.3% done] [  4767/  3245 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [62.5% done] [   785/  5466 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25733, got signal=6
Threads: 1: [__m] [65.6% done] [  4368/  2041 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25735, got signal=6

fio: (groupid=0): err= 0: pid=25733
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.4%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.1%, 50=8.8%, 100=49.4%
     lat (msec): 250=39.3%, 500=0.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25734
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.6%, 20=1.3%, 50=9.1%, 100=47.2%
     lat (msec): 250=41.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25735
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.8%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.3%, 20=2.1%, 50=15.9%, 100=35.4%
     lat (msec): 250=44.5%, 500=0.5%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3871/2170, merge=677/72, ticks=47144/33500, in_queue=80644, util=97.96%
0.18user 0.86system 0:22.31elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
424664inputs+190064outputs (0major+2466minor)pagefaults 0swaps