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] [30.0% done] [ 18927/ 51602 kb/s] [eta 00m:07s]
Threads: 3: [mmm] [36.4% done] [ 16664/ 24547 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [Fmm] [55.6% done] [ 10276/ 74061 kb/s] [eta 00m:04s]
fio: pid=12208, got signal=6
Threads: 2: [_mF] [54.5% done] [  1060/  1621 kb/s] [eta 00m:05s]
Threads: 2: [_FF] [100.0% done] [   312/ 18988 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] [83.3% done] [ 51035/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 54393/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=12208
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=73.6%, 4=5.6%, 8=20.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=59.0%, 4=14.4%, 10=1.9%, 20=2.8%, 50=5.4%, 100=10.1%
     lat (msec): 250=5.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12209
  read : io=100MiB, bw=6,320KiB/s, runt= 16589msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  511, avg=36.69, stdev=62.65
    bw (KiB/s) : min=   22, max=29990, per=78.60%, avg=10914.53, stdev=10832.79
  write: io=66,960KiB, bw=4,853KiB/s, runt= 14128msec
    slat (msec): min=    0, max=    5, avg= 0.00, stdev= 0.14
    clat (msec): min=    0, max=  167, avg= 1.74, stdev=10.27
    bw (KiB/s) : min=    0, max=12030, per=45.06%, avg=7146.67, stdev=6326.31
  cpu          : usr=8.51%, sys=4.48%, ctx=5900
  IO depths    : 1=2.1%, 2=52.6%, 4=25.6%, 8=19.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.5%, 4=13.3%, 10=19.6%, 20=6.3%, 50=1.4%, 100=7.5%
     lat (msec): 250=7.4%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12210
  read : io=100MiB, bw=6,233KiB/s, runt= 16820msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  256, avg=26.69, stdev=44.13
    bw (KiB/s) : min=    2, max=29103, per=82.61%, avg=11471.50, stdev=10117.52
  write: io=72,968KiB, bw=5,288KiB/s, runt= 14128msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  118, avg= 1.46, stdev= 7.70
    bw (KiB/s) : min=    0, max=24037, per=85.71%, avg=13594.67, stdev=12324.66
  cpu          : usr=9.32%, sys=5.02%, ctx=6127
  IO depths    : 1=2.6%, 2=55.9%, 4=25.0%, 8=16.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.9%, 4=14.7%, 10=19.5%, 20=4.4%, 50=2.8%, 100=4.6%
     lat (msec): 250=6.7%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=223MiB, aggrb=13,886KiB/s, minb=0KiB/s, maxb=6,320KiB/s, mint=16589msec, maxt=16820msec
  WRITE: io=214MiB, aggrb=15,862KiB/s, minb=0KiB/s, maxb=5,288KiB/s, mint=16589msec, maxt=16820msec

Disk stats (read/write):
  cciss!c0d0: ios=3118/3220, merge=38115/51471, ticks=210316/1404580, in_queue=1614900, util=97.99%
4.43user 2.02system 0:17.11elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k
582072inputs+437864outputs (0major+2447minor)pagefaults 0swaps