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] [ 12828/  7773 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 17018/  3404 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 18255/   996 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  9216/  9622 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 12650/  7236 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  5023/ 11169 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [  9526/  7118 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  9721/  5983 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  7366/  7337 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  5393/  8574 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 10258/  4433 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  3908/  8627 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  6447/  5210 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [ 12064/   105 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6960/  2742 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  2530/  6154 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  4815/  2294 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1631, got signal=6
Threads: 2: [mm_] [60.6% done] [  2538/  3555 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1630, got signal=6
Threads: 1: [m__] [65.6% done] [  7850/   549 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1629, got signal=6

fio: (groupid=0): err= 0: pid=1629
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=8.8%, 8=90.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.6%, 20=5.4%, 50=16.5%, 100=22.3%
     lat (msec): 250=52.8%, 500=2.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1630
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.4%, 100=53.0%
     lat (msec): 250=36.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1631
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.0%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=1.4%, 50=6.8%, 100=54.6%
     lat (msec): 250=36.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3638/2496, merge=599/152, ticks=42628/34728, in_queue=77356, util=97.34%
0.19user 0.73system 0:22.20elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
374256inputs+239904outputs (0major+2466minor)pagefaults 0swaps