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] [  9509/  9871 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [  8147/ 11845 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 14781/  3416 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 14154/  4417 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  9163/  8208 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  8289/  9257 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 13406/  3949 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 11120/  3750 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 10231/  4835 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  9867/  5084 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 10913/  2871 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6042/  7269 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  8737/  3241 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  5749/  5144 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  9233/  1875 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  4848/  4380 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  7305/  1858 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [62.5% done] [  3420/  3835 kb/s] [eta 00m:12s]
fio: pid=22869, got signal=6
Threads: 2: [m_m] [65.6% done] [  4124/  3579 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22870, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22868, got signal=6

fio: (groupid=0): err= 0: pid=22868
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.0%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.2%, 50=9.2%, 100=37.9%
     lat (msec): 250=50.1%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22869
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=8.6%, 100=44.2%
     lat (msec): 250=45.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22870
  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=1.0%, 50=9.3%, 100=37.6%
     lat (msec): 250=50.3%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3790/2249, merge=599/45, ticks=49008/32168, in_queue=81172, util=98.37%
0.31user 0.47system 0:22.33elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
399800inputs+214248outputs (0major+2460minor)pagefaults 0swaps