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] [27.3% done] [ 16729/ 50396 kb/s] [eta 00m:08s]
Threads: 3: [mmm] [44.4% done] [ 13638/ 56408 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmF] [62.5% done] [  9549/ 52423 kb/s] [eta 00m:03s]
fio: pid=28820, got signal=6
Threads: 2: [FF_] [100.0% done] [  1228/ 12698 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [75.0% done] [ 32922/     0 kb/s] [eta 00m:05s]
Threads: 2: [VV_] [94.1% done] [ 55603/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [100.0% done] [ 59483/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=28818
  read : io=100MiB, bw=6,082KiB/s, runt= 17234msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  280, avg=29.40, stdev=46.18
    bw (KiB/s) : min=    0, max=40296, per=98.08%, avg=13125.47, stdev=13643.54
  write: io=80,952KiB, bw=5,726KiB/s, runt= 14475msec
    slat (msec): min=    0, max=    9, avg= 0.01, stdev= 0.25
    clat (msec): min=    0, max=  174, avg= 0.93, stdev= 8.07
    bw (KiB/s) : min=    0, max=55599, per=130.38%, avg=21642.50, stdev=25115.66
  cpu          : usr=9.42%, sys=4.78%, ctx=9921
  IO depths    : 1=36.8%, 2=20.0%, 4=26.4%, 8=16.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.6%, 4=13.6%, 10=21.4%, 20=4.9%, 50=1.4%, 100=7.6%
     lat (msec): 250=6.1%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28819
  read : io=100MiB, bw=6,035KiB/s, runt= 17372msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  295, avg=32.89, stdev=50.67
    bw (KiB/s) : min=   19, max=32342, per=88.23%, avg=11806.38, stdev=10984.02
  write: io=73,556KiB, bw=5,203KiB/s, runt= 14475msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  199, avg= 1.47, stdev=11.35
    bw (KiB/s) : min=    0, max=21484, per=69.56%, avg=11545.67, stdev=10831.81
  cpu          : usr=6.19%, sys=4.14%, ctx=6609
  IO depths    : 1=1.1%, 2=51.0%, 4=30.1%, 8=17.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.5%, 4=11.1%, 10=21.1%, 20=4.6%, 50=3.1%, 100=6.0%
     lat (msec): 250=8.2%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28820
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=81.7%, 4=4.5%, 8=13.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=72.3%, 4=11.2%, 10=1.0%, 20=0.2%, 50=1.2%, 100=6.0%
     lat (msec): 250=8.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=222MiB, aggrb=13,382KiB/s, minb=0KiB/s, maxb=6,082KiB/s, mint=0msec, maxt=17372msec
  WRITE: io=229MiB, aggrb=16,599KiB/s, minb=0KiB/s, maxb=5,726KiB/s, mint=0msec, maxt=17372msec

Disk stats (read/write):
  cciss!c0d0: ios=4803/3532, merge=1086/55041, ticks=41788/1474160, in_queue=1516192, util=90.93%
3.92user 1.96system 0:19.43elapsed 30%CPU (0avgtext+0avgdata 0maxresident)k
580120inputs+469320outputs (0major+2459minor)pagefaults 0swaps