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] [ 17360/  4669 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  8566/ 12092 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 18035/  2172 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 12080/  7598 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 10185/  7569 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 12377/  6056 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 11913/  6438 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  9965/  7134 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 11848/  3099 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6857/  7492 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 10673/  2265 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  9457/  2729 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  5149/  6259 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  3489/  5967 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  5499/  4051 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6333/  1513 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17719, got signal=6
Threads: 2: [m_m] [61.3% done] [  6154/  1484 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17720, got signal=6
Threads: 1: [m__] [64.5% done] [  7659/   972 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17718, got signal=6

fio: (groupid=0): err= 0: pid=17718
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.8%, 8=91.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.6%, 50=18.4%, 100=24.1%
     lat (msec): 250=53.4%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17719
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=6.0%, 100=62.4%
     lat (msec): 250=29.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17720
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=7.7%, 100=49.4%
     lat (msec): 250=40.0%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3703/2133, merge=534/99, ticks=43596/29128, in_queue=72716, util=98.70%
0.18user 0.52system 0:21.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
399760inputs+214264outputs (0major+2453minor)pagefaults 0swaps