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: [mFm] [37.5% done] [   532/   146 kb/s] [eta 00m:05s]
Threads: 3: [mFm] [36.4% done] [  1138/     0 kb/s] [eta 00m:07s]
Threads: 3: [mFm] [35.7% done] [   545/   325 kb/s] [eta 00m:09s]
Threads: 3: [mFm] [35.3% done] [   638/   231 kb/s] [eta 00m:11s]
Threads: 3: [mFm] [36.8% done] [   556/     0 kb/s] [eta 00m:12s]
Threads: 3: [mFm] [36.4% done] [   589/     0 kb/s] [eta 00m:14s]
Threads: 3: [mVm] [52.9% done] [  4563/ 41635 kb/s] [eta 00m:08s]
Threads: 3: [mVm] [58.8% done] [ 27699/ 10457 kb/s] [eta 00m:07s]
Threads: 3: [mVm] [61.1% done] [ 23656/  1789 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mVF] [63.2% done] [ 25027/  2774 kb/s] [eta 00m:07s]
fio: pid=7875, got signal=6
Threads: 2: [mV_] [65.0% done] [ 19757/     0 kb/s] [eta 00m:07s]
Threads: 1: [m__] [63.6% done] [  8545/     0 kb/s] [eta 00m:08s]
Threads: 1: [m__] [65.2% done] [   170/     0 kb/s] [eta 00m:08s]
Threads: 1: [m__] [64.0% done] [   402/     0 kb/s] [eta 00m:09s]
Threads: 1: [V__] [70.8% done] [  7227/   898 kb/s] [eta 00m:07s]
Threads: 1: [V__] [85.7% done] [ 22416/     0 kb/s] [eta 00m:03s]
Threads: 1: [V__] [100.0% done] [ 23921/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 19833/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=7873
  read : io=100MiB, bw=4,980KiB/s, runt= 21049msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1623, avg=80.88, stdev=213.69
    bw (KiB/s) : min=   63, max=23859, per=54.13%, avg=5589.91, stdev=8590.39
  write: io=84,576KiB, bw=5,103KiB/s, runt= 16971msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max= 1054, avg= 9.07, stdev=72.49
    bw (KiB/s) : min=    0, max=57597, per=73.04%, avg=12281.88, stdev=19150.37
  cpu          : usr=6.52%, sys=3.71%, ctx=11394
  IO depths    : 1=41.0%, 2=3.9%, 4=30.1%, 8=25.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.4%, 4=0.7%, 10=6.8%, 20=11.7%, 50=29.8%, 100=2.4%
     lat (msec): 250=1.8%, 500=2.2%, 750=1.0%, 1000=0.6%, >=2000=1.2%
fio: (groupid=0): err= 0: pid=7874
  read : io=100MiB, bw=7,741KiB/s, runt= 13545msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  309, avg=22.75, stdev=39.32
    bw (KiB/s) : min=    7, max=29258, per=180.87%, avg=18678.90, stdev=9942.17
  write: io=99,316KiB, bw=11,674KiB/s, runt=  8711msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  119, avg= 0.30, stdev= 5.17
    bw (KiB/s) : min=    0, max=113401, per=337.20%, avg=56700.50, stdev=80186.62
  cpu          : usr=6.53%, sys=4.43%, ctx=10991
  IO depths    : 1=53.2%, 2=7.0%, 4=27.7%, 8=12.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=55.0%, 4=2.6%, 10=10.7%, 20=15.1%, 50=13.4%, 100=0.6%
     lat (msec): 250=2.3%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7875
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=30.9%, 2=53.4%, 4=6.5%, 8=9.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=73.9%, 4=11.6%, 10=1.5%, 20=0.4%, 50=4.6%, 100=1.2%
     lat (msec): 250=0.6%, 500=1.8%, 750=1.0%, 1000=1.1%, >=2000=1.8%

Run status group 0 (all jobs):
   READ: io=207MiB, aggrb=10,327KiB/s, minb=0KiB/s, maxb=7,741KiB/s, mint=0msec, maxt=21049msec
  WRITE: io=272MiB, aggrb=16,815KiB/s, minb=0KiB/s, maxb=11,674KiB/s, mint=0msec, maxt=21049msec

Disk stats (read/write):
  cciss!c0d0: ios=3990/3966, merge=20/65720, ticks=59208/1928776, in_queue=1987988, util=90.31%
3.66user 1.84system 0:22.94elapsed 24%CPU (0avgtext+0avgdata 0maxresident)k
472512inputs+557416outputs (0major+2477minor)pagefaults 0swaps