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=10203, got signal=6
Threads: 2: [m_F] [60.0% done] [  7184/ 82017 kb/s] [eta 00m:02s]
Threads: 2: [m_F] [57.1% done] [  1950/     0 kb/s] [eta 00m:03s]
Threads: 2: [F_F] [100.0% done] [   507/ 18220 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10202, got signal=6
Threads: 1: [__V] [85.7% done] [ 29557/     0 kb/s] [eta 00m:02s]
fio: (groupid=0): err= 0: pid=10202
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=77.8%, 4=3.1%, 8=18.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=64.9%, 4=12.8%, 10=0.7%, 20=0.4%, 50=9.3%, 100=7.3%
     lat (msec): 250=4.1%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10203
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=16.7%, 2=75.3%, 4=4.9%, 8=3.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=83.9%, 4=11.2%, 10=1.2%, 20=0.1%, 50=0.4%, 100=2.0%
     lat (msec): 250=0.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10204
  read : io=100MiB, bw=8,048KiB/s, runt= 13029msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  170, avg= 7.56, stdev=20.81
    bw (KiB/s) : min=    2, max=75235, per=249.66%, avg=27051.17, stdev=36245.25
  write: io=94,740KiB, bw=8,351KiB/s, runt= 11616msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=   43, avg= 0.93, stdev= 2.67
    bw (KiB/s) : min=    0, max=60917, per=150.26%, avg=34965.50, stdev=30338.30
  cpu          : usr=16.18%, sys=5.93%, ctx=4892
  IO depths    : 1=3.7%, 2=62.9%, 4=24.8%, 8=8.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.5%, 4=25.5%, 10=16.7%, 20=1.0%, 50=2.4%, 100=0.8%
     lat (msec): 250=0.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=135MiB, aggrb=10,835KiB/s, minb=0KiB/s, maxb=8,048KiB/s, mint=13029msec, maxt=13029msec
  WRITE: io=258MiB, aggrb=23,270KiB/s, minb=0KiB/s, maxb=8,351KiB/s, mint=13029msec, maxt=13029msec

Disk stats (read/write):
  cciss!c0d0: ios=1250/3228, merge=3309/62683, ticks=38096/1308088, in_queue=1346184, util=95.27%
5.12user 1.68system 0:13.37elapsed 50%CPU (0avgtext+0avgdata 0maxresident)k
298040inputs+528160outputs (0major+2454minor)pagefaults 0swaps