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] [17.6% done] [ 17929/ 47020 kb/s] [eta 00m:14s]
Threads: 3: [mFm] [22.2% done] [ 11226/ 19320 kb/s] [eta 00m:14s]
Threads: 3: [mFm] [25.0% done] [  8911/     0 kb/s] [eta 00m:15s]
Threads: 3: [mFm] [28.6% done] [  7427/     0 kb/s] [eta 00m:15s]
Threads: 3: [mFm] [46.7% done] [  3718/ 39692 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13260, got signal=6
Threads: 2: [_Fm] [50.0% done] [  1720/ 19707 kb/s] [eta 00m:08s]
Threads: 2: [_FF] [100.0% done] [   633/ 29179 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] [78.9% done] [ 47392/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [100.0% done] [ 61541/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 55885/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13260
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=73.3%, 4=4.4%, 8=22.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.4%, 4=7.1%, 10=0.5%, 20=0.1%, 50=1.3%, 100=7.4%
     lat (msec): 250=15.7%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13261
  read : io=100MiB, bw=6,088KiB/s, runt= 17222msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  280, avg=18.54, stdev=39.92
    bw (KiB/s) : min=    1, max=41277, per=109.58%, avg=16198.09, stdev=15877.31
  write: io=93,912KiB, bw=6,748KiB/s, runt= 14251msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  146, avg= 1.62, stdev= 7.18
    bw (KiB/s) : min=    0, max=60735, per=175.07%, avg=28233.60, stdev=29574.00
  cpu          : usr=11.43%, sys=5.39%, ctx=6364
  IO depths    : 1=2.4%, 2=60.6%, 4=27.5%, 8=9.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.9%, 4=19.4%, 10=26.4%, 20=3.7%, 50=1.0%, 100=2.0%
     lat (msec): 250=4.3%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13262
  read : io=100MiB, bw=6,138KiB/s, runt= 17067msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  347, avg=45.44, stdev=73.55
    bw (KiB/s) : min=   18, max=32648, per=52.76%, avg=7799.71, stdev=10102.90
  write: io=72,080KiB, bw=5,179KiB/s, runt= 14251msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  190, avg= 2.22, stdev=13.46
    bw (KiB/s) : min=    0, max=22022, per=53.60%, avg=8644.00, stdev=11749.48
  cpu          : usr=8.91%, sys=5.55%, ctx=6515
  IO depths    : 1=0.8%, 2=54.5%, 4=26.6%, 8=18.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.6%, 4=15.0%, 10=20.2%, 20=4.1%, 50=1.5%, 100=4.4%
     lat (msec): 250=10.1%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=243MiB, aggrb=14,782KiB/s, minb=0KiB/s, maxb=6,138KiB/s, mint=17067msec, maxt=17222msec
  WRITE: io=219MiB, aggrb=16,127KiB/s, minb=0KiB/s, maxb=6,748KiB/s, mint=17067msec, maxt=17222msec

Disk stats (read/write):
  cciss!c0d0: ios=5052/3438, merge=915/52517, ticks=50948/1519720, in_queue=1571228, util=97.02%
4.58user 2.31system 0:17.77elapsed 38%CPU (0avgtext+0avgdata 0maxresident)k
620448inputs+448976outputs (0major+2456minor)pagefaults 0swaps