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] [12.0% done] [ 14376/  6725 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 15525/  6276 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [  7314/ 12056 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 10966/  7301 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.9% done] [  7455/ 12841 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  7805/  8505 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 12117/  5946 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 16408/  1305 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 12658/  2489 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 10719/  4071 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  8228/  4974 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8452/  4348 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  4429/  6691 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  6776/  3294 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  7367/  1950 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7411/  1114 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21923, got signal=6
Threads: 2: [m_m] [63.3% done] [  8419/   447 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  6156/  2267 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21924, got signal=6
Threads: 1: [m__] [67.7% done] [  2379/  3738 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21922, got signal=6

fio: (groupid=0): err= 0: pid=21922
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.1%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.3%, 10=0.2%, 20=0.9%, 50=17.5%, 100=34.3%
     lat (msec): 250=45.0%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21923
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=8.9%, 100=61.0%
     lat (msec): 250=28.3%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21924
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=10.7%, 100=38.3%
     lat (msec): 250=48.1%, 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=3807/2130, merge=520/225, ticks=44584/37384, in_queue=81968, util=99.00%
0.16user 0.38system 0:21.57elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
411016inputs+203288outputs (0major+2456minor)pagefaults 0swaps