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] [37.5% done] [ 16257/ 25649 kb/s] [eta 00m:05s]
Threads: 3: [mmm] [40.0% done] [ 15177/ 25636 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5391, got signal=6
Threads: 2: [m_m] [55.6% done] [  5640/ 25868 kb/s] [eta 00m:04s]
Threads: 2: [m_m] [60.0% done] [  2901/     0 kb/s] [eta 00m:04s]
Threads: 2: [F_m] [63.6% done] [  1393/ 16038 kb/s] [eta 00m:04s]
Threads: 2: [F_F] [100.0% done] [   499/  4291 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]
Threads: 2: [V_V] [68.2% done] [  7489/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [84.2% done] [ 60672/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 61334/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=5390
  read : io=100MiB, bw=5,942KiB/s, runt= 17645msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  445, avg=35.59, stdev=60.78
    bw (KiB/s) : min=   15, max=36470, per=83.77%, avg=11309.00, stdev=11889.03
  write: io=70,364KiB, bw=4,817KiB/s, runt= 14956msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  223, avg= 1.27, stdev=11.81
    bw (KiB/s) : min=    0, max=11800, per=40.74%, avg=6361.00, stdev=5953.79
  cpu          : usr=8.05%, sys=3.65%, ctx=6825
  IO depths    : 1=10.2%, 2=45.2%, 4=24.6%, 8=20.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.5%, 4=11.6%, 10=18.8%, 20=5.0%, 50=1.4%, 100=11.0%
     lat (msec): 250=4.4%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5391
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=14.4%, 2=60.0%, 4=4.1%, 8=21.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.6%, 4=6.1%, 10=0.3%, 20=1.9%, 50=6.5%, 100=16.0%
     lat (msec): 250=1.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5392
  read : io=100MiB, bw=6,014KiB/s, runt= 17434msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  407, avg=40.49, stdev=73.12
    bw (KiB/s) : min=   11, max=47656, per=68.00%, avg=9180.15, stdev=14487.03
  write: io=83,216KiB, bw=5,696KiB/s, runt= 14960msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  166, avg= 1.46, stdev= 9.06
    bw (KiB/s) : min=    0, max=60295, per=115.21%, avg=17989.00, stdev=25816.00
  cpu          : usr=10.39%, sys=3.49%, ctx=6594
  IO depths    : 1=10.1%, 2=46.3%, 4=25.0%, 8=18.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.6%, 4=15.1%, 10=17.2%, 20=4.4%, 50=1.5%, 100=9.5%
     lat (msec): 250=5.3%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=227MiB, aggrb=13,500KiB/s, minb=0KiB/s, maxb=6,014KiB/s, mint=17434msec, maxt=17645msec
  WRITE: io=223MiB, aggrb=15,614KiB/s, minb=0KiB/s, maxb=5,696KiB/s, mint=17434msec, maxt=17645msec

Disk stats (read/write):
  cciss!c0d0: ios=2172/3557, merge=16462/53399, ticks=125680/1533208, in_queue=1659124, util=98.02%
4.54user 1.62system 0:17.93elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
563600inputs+456272outputs (0major+2446minor)pagefaults 0swaps