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] [12.5% done] [ 18458/  2436 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 16367/  3856 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [21.7% done] [ 18617/  1443 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 12621/  6963 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 13170/  4022 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 11136/  6174 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 12458/  4929 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 10229/  5275 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  8606/  6019 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11901/  3526 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 11470/  2513 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6158/  6516 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8098/  3367 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  4226/  5104 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8216/  2420 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3872/  5055 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4710/  3640 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  7313/  1411 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20576, got signal=6
Threads: 2: [m_V] [65.6% done] [ 15485/     0 kb/s] [eta 00m:11s]
Threads: 1: [m__] [64.7% done] [ 16343/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20575, got signal=6

fio: (groupid=0): err= 0: pid=20575
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=3.5%, 8=96.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.5%, 100=42.3%
     lat (msec): 250=45.8%, 500=0.5%, 750=1.0%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20576
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=7.1%, 100=48.2%
     lat (msec): 250=42.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20577
  read : io=100MiB, bw=4,738KiB/s, runt= 22079msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  246, avg=72.92, stdev=48.11
    bw (KiB/s) : min=  261, max=22613, per=45.58%, avg=5324.59, stdev=4696.75
  write: io=28,024KiB, bw=1,399KiB/s, runt= 20499msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   59, max=  182, avg=97.54, stdev=22.43
    bw (KiB/s) : min=    0, max= 6123, per=65.00%, avg=2696.67, stdev=2183.73
  cpu          : usr=0.33%, sys=0.51%, ctx=7598
  IO depths    : 1=0.1%, 2=0.8%, 4=14.3%, 8=84.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.5%, 10=4.9%, 20=7.9%, 50=15.5%, 100=40.1%
     lat (msec): 250=30.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=246MiB, aggrb=11,683KiB/s, minb=0KiB/s, maxb=4,738KiB/s, mint=22079msec, maxt=22079msec
  WRITE: io=83,060KiB, aggrb=4,149KiB/s, minb=0KiB/s, maxb=1,399KiB/s, mint=22079msec, maxt=22079msec

Disk stats (read/write):
  cciss!c0d0: ios=4682/1882, merge=824/83, ticks=54984/24280, in_queue=79260, util=99.21%
0.30user 0.40system 0:23.08elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
503904inputs+166152outputs (0major+2448minor)pagefaults 0swaps