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] [ 16140/  6066 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 16998/  3209 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 10380/  8688 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  8529/  8985 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 12283/  6009 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 11958/  5137 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 12336/  4429 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.0% done] [ 16172/   463 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 12222/  2810 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  9347/  4274 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  5202/  6699 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8232/  4124 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [ 13040/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 10800/   479 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4433/  5031 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  8025/  1149 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19701, got signal=6
Threads: 2: [m_m] [61.3% done] [  5369/  2257 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [64.5% done] [  3616/  3827 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19700, got signal=6
Threads: 1: [__m] [65.6% done] [  4889/  2403 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19702, got signal=6

fio: (groupid=0): err= 0: pid=19700
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.3%, 50=8.1%, 100=43.3%
     lat (msec): 250=45.3%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19701
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.8%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=6.7%, 100=61.2%
     lat (msec): 250=30.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19702
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.3%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=2.0%, 50=10.1%, 100=41.5%
     lat (msec): 250=45.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4370/1745, merge=805/118, ticks=51048/24296, in_queue=75340, util=98.22%
0.19user 0.56system 0:21.87elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
447984inputs+166152outputs (0major+2456minor)pagefaults 0swaps