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] [13.0% done] [ 15306/  6577 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 13475/  7008 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  9221/ 10046 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 10890/  8923 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  9928/  8663 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13028/  5466 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  4767/ 11474 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 10384/  5283 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 14275/  2275 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12316/  2456 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6845/  6691 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  3819/  7695 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6170/  5308 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 10282/   516 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5442/  4425 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7097/  2220 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7122/   964 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13957, got signal=6
Threads: 2: [m_m] [64.5% done] [  6166/  1415 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13956, got signal=6
Threads: 1: [__m] [65.6% done] [  2855/  2944 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13958, got signal=6

fio: (groupid=0): err= 0: pid=13956
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.8%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.1%, 20=0.6%, 50=9.2%, 100=46.3%
     lat (msec): 250=42.6%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13957
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=7.0%, 100=49.4%
     lat (msec): 250=41.0%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13958
  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=0.0%, 20=0.9%, 50=10.3%, 100=41.3%
     lat (msec): 250=45.8%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3637/2324, merge=555/62, ticks=44512/37680, in_queue=82192, util=98.24%
0.34user 0.48system 0:21.86elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
390880inputs+223560outputs (0major+2461minor)pagefaults 0swaps