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] [ 14773/  7110 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 14870/  6540 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [  9859/ 11075 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 13406/  6813 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 15144/  3876 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 11995/  2412 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  9261/  4352 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  7244/  8155 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9427/  7273 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6269/  7005 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  6178/  3591 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  7805/  2794 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  9387/  2615 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  3917/  6186 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  3843/  5800 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.0% done] [  8069/  1187 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  6019/  3070 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18241, got signal=6
Threads: 2: [m_m] [62.5% done] [  3193/  3904 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18242, got signal=6
Threads: 1: [m__] [65.6% done] [  3591/  3416 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18240, got signal=6

fio: (groupid=0): err= 0: pid=18240
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.2%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.1%, 50=17.8%, 100=29.9%
     lat (msec): 250=49.4%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18241
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=9.9%, 100=41.7%
     lat (msec): 250=47.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18242
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.2%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.7%, 20=2.3%, 50=9.0%, 100=38.1%
     lat (msec): 250=48.4%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3488/2339, merge=581/429, ticks=44028/34256, in_queue=78276, util=99.13%
0.20user 0.38system 0:22.06elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398840inputs+215408outputs (0major+2464minor)pagefaults 0swaps