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] [ 15358/  5735 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 13504/  7480 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 11036/  6050 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  9717/ 10002 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 11092/  6158 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [  7203/ 10937 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  5234/ 11291 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  8220/  7691 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  9774/  5454 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 14553/   732 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11332/  2664 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  5767/  6150 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7138/  4820 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8383/  2489 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7138/  2757 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7915/  1460 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  6853/  1529 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26628, got signal=6
Threads: 2: [m_m] [64.5% done] [  4226/  3457 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26629, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26627, got signal=6

fio: (groupid=0): err= 0: pid=26627
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.3%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=9.1%, 100=42.4%
     lat (msec): 250=45.0%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26628
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=8.9%, 100=51.1%
     lat (msec): 250=39.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26629
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=4.5%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.4%, 20=1.6%, 50=8.4%, 100=35.5%
     lat (msec): 250=52.2%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3828/2193, merge=559/129, ticks=46784/35004, in_queue=81788, util=97.88%
0.30user 0.72system 0:21.52elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
394968inputs+219440outputs (0major+2459minor)pagefaults 0swaps