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: [mFm] [21.4% done] [  1073/     0 kb/s] [eta 00m:11s]
Threads: 3: [mFm] [22.2% done] [   926/     0 kb/s] [eta 00m:14s]
Threads: 3: [mFm] [21.7% done] [   816/     0 kb/s] [eta 00m:18s]
Threads: 3: [mFm] [22.2% done] [   915/     0 kb/s] [eta 00m:21s]
Threads: 3: [mFm] [23.3% done] [  1838/ 28741 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27880, got signal=6
Threads: 2: [m_F] [40.0% done] [  8663/ 30392 kb/s] [eta 00m:12s]
Threads: 2: [m_F] [42.9% done] [   166/  2944 kb/s] [eta 00m:12s]
Threads: 2: [m_F] [43.5% done] [   256/     0 kb/s] [eta 00m:13s]
Threads: 2: [m_V] [44.0% done] [ 43083/     0 kb/s] [eta 00m:14s]
Threads: 1: [m__] [46.2% done] [ 55302/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [F__] [100.0% done] [  5979/ 26760 kb/s] [eta 00m:00s]
fio: pid=27879, got signal=6

fio: (groupid=0): err= 0: pid=27879
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=2.8%, 2=55.0%, 4=18.7%, 8=23.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.8%, 4=6.8%, 10=11.5%, 20=12.4%, 50=6.8%, 100=5.9%
     lat (msec): 250=5.3%, 500=2.5%, 750=0.2%, 1000=0.5%, >=2000=1.7%
fio: (groupid=0): err= 0: pid=27880
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=88.9%, 4=7.4%, 8=3.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=89.6%, 4=5.6%, 10=0.6%, 20=0.1%, 50=0.0%, 100=1.1%
     lat (msec): 250=2.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27881
  read : io=100MiB, bw=8,722KiB/s, runt= 12022msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1947, avg=31.75, stdev=153.92
    bw (KiB/s) : min=   32, max=61939, per=107.81%, avg=12910.47, stdev=23685.47
  write: io=91,208KiB, bw=9,012KiB/s, runt= 10363msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1339, avg= 5.66, stdev=66.81
    bw (KiB/s) : min=    0, max=62028, per=97.57%, avg=24846.20, stdev=31990.43
  cpu          : usr=16.30%, sys=6.89%, ctx=5003
  IO depths    : 1=1.6%, 2=59.5%, 4=26.5%, 8=12.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.1%, 4=18.3%, 10=23.8%, 20=6.2%, 50=1.8%, 100=3.5%
     lat (msec): 250=0.7%, 500=0.6%, 750=0.3%, 1000=0.2%, >=2000=0.5%

Run status group 0 (all jobs):
   READ: io=137MiB, aggrb=11,975KiB/s, minb=0KiB/s, maxb=8,722KiB/s, mint=12022msec, maxt=12022msec
  WRITE: io=252MiB, aggrb=25,464KiB/s, minb=0KiB/s, maxb=9,012KiB/s, mint=12022msec, maxt=12022msec

Disk stats (read/write):
  cciss!c0d0: ios=2759/2793, merge=630/55063, ticks=38960/1005256, in_queue=1044216, util=90.18%
4.03user 1.77system 0:13.51elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
331056inputs+515464outputs (0major+2456minor)pagefaults 0swaps