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] [14.3% done] [ 17030/  6420 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 14965/  4193 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [  9245/  8749 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 13340/  5705 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  8484/  7891 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 13650/  4417 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13092/  4608 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 10949/  5023 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  8566/  5397 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 12690/  2452 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8614/  5697 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  9607/  2924 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6444/  5115 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5247/  5523 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5592/  4360 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  2554/  6137 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3827/  4221 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1657, got signal=6
Threads: 2: [m_m] [64.5% done] [  1324/  5079 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1658, got signal=6
Threads: 1: [m__] [65.6% done] [  5055/  1818 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1656, got signal=6

fio: (groupid=0): err= 0: pid=1656
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.5%, 50=10.1%, 100=41.4%
     lat (msec): 250=43.6%, 500=1.2%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1657
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.9%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=10.8%, 100=44.5%
     lat (msec): 250=44.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1658
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 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=0.5%, 50=8.6%, 100=43.9%
     lat (msec): 250=45.3%, 500=0.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3557/2425, merge=556/202, ticks=45624/33940, in_queue=79564, util=99.15%
0.18user 0.38system 0:21.87elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
391264inputs+222696outputs (0major+2463minor)pagefaults 0swaps