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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2929, got signal=6
Threads: 2: [m_F] [75.0% done] [  6552/ 94919 kb/s] [eta 00m:01s]
Threads: 2: [m_F] [66.7% done] [  1317/     0 kb/s] [eta 00m:02s]
Threads: 2: [m_F] [71.4% done] [  1513/     0 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2928, got signal=6
Threads: 1: [__F] [100.0% done] [  2440/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 52499/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=2928
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=75.3%, 4=6.2%, 8=18.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=62.5%, 4=12.9%, 10=1.6%, 20=2.3%, 50=4.2%, 100=10.6%
     lat (msec): 250=4.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2929
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=78.2%, 2=3.6%, 4=5.9%, 8=12.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=79.3%, 4=2.0%, 10=0.8%, 20=3.3%, 50=11.3%, 100=2.4%
     lat (msec): 250=0.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2930
  read : io=100MiB, bw=7,095KiB/s, runt= 14777msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  145, avg= 8.81, stdev=19.13
    bw (KiB/s) : min=   10, max=68500, per=274.50%, avg=25314.00, stdev=31745.43
  write: io=91,808KiB, bw=7,081KiB/s, runt= 13275msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  130, avg= 1.02, stdev= 5.53
    bw (KiB/s) : min=    0, max=61742, per=170.10%, avg=34878.00, stdev=30575.71
  cpu          : usr=13.40%, sys=5.50%, ctx=5764
  IO depths    : 1=1.8%, 2=61.8%, 4=26.6%, 8=9.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.9%, 4=20.9%, 10=25.9%, 20=2.2%, 50=0.6%, 100=2.6%
     lat (msec): 250=0.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=130MiB, aggrb=9,222KiB/s, minb=0KiB/s, maxb=7,095KiB/s, mint=14777msec, maxt=14777msec
  WRITE: io=260MiB, aggrb=20,504KiB/s, minb=0KiB/s, maxb=7,081KiB/s, mint=14777msec, maxt=14777msec

Disk stats (read/write):
  cciss!c0d0: ios=2759/3684, merge=560/62640, ticks=13448/1491324, in_queue=1504772, util=94.94%
4.67user 1.53system 0:15.09elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
311472inputs+531672outputs (0major+2461minor)pagefaults 0swaps