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] [12.5% done] [ 19463/  1057 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.0% done] [ 11214/  8956 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [  8643/  8151 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 14134/  4514 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.9% done] [ 13626/  4307 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  8610/  8802 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 11157/  5531 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  9981/  6483 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 11340/  3315 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  8826/  5495 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7061/  7236 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8875/  3184 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  9717/  2969 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [ 10250/  1923 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6345/  4246 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7158/  1960 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  7130/  1460 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14243, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [60.6% done] [  5096/  2054 kb/s] [eta 00m:13s]
fio: pid=14242, got signal=6
Threads: 1: [m__] [65.6% done] [  6988/   219 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14241, got signal=6

fio: (groupid=0): err= 0: pid=14241
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.3%, 8=91.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.9%, 50=18.8%, 100=26.7%
     lat (msec): 250=49.2%, 500=0.3%, 750=0.2%, 1000=0.3%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=14242
  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=0.0%, 4=0.1%, 10=0.2%, 20=1.4%, 50=10.5%, 100=41.8%
     lat (msec): 250=45.2%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14243
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=0.6%, 50=8.4%, 100=45.4%
     lat (msec): 250=44.8%, 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=4058/2026, merge=627/48, ticks=49716/31900, in_queue=81612, util=98.08%
0.30user 0.37system 0:22.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
428656inputs+185640outputs (0major+2457minor)pagefaults 0swaps