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] [33.3% done] [ 16839/ 48091 kb/s] [eta 00m:06s]
Threads: 3: [mmm] [50.0% done] [ 16046/ 27306 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12319, got signal=6
Threads: 2: [_mm] [55.6% done] [ 10211/ 52406 kb/s] [eta 00m:04s]
Threads: 2: [_mF] [54.5% done] [   846/  1960 kb/s] [eta 00m:05s]
Threads: 2: [_FF] [100.0% done] [   300/ 21634 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] [ 54679/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 58855/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=12319
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=81.0%, 4=3.6%, 8=15.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.9%, 4=13.2%, 10=2.1%, 20=0.2%, 50=1.1%, 100=9.0%
     lat (msec): 250=6.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12320
  read : io=100MiB, bw=6,256KiB/s, runt= 16760msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  419, avg=34.92, stdev=57.38
    bw (KiB/s) : min=   25, max=36405, per=79.64%, avg=11140.17, stdev=12247.84
  write: io=72,224KiB, bw=5,249KiB/s, runt= 14088msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  263, avg= 1.80, stdev=14.99
    bw (KiB/s) : min=    0, max=18049, per=46.53%, avg=7584.33, stdev=9362.90
  cpu          : usr=9.19%, sys=3.79%, ctx=6949
  IO depths    : 1=9.3%, 2=44.3%, 4=26.1%, 8=20.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.7%, 4=10.5%, 10=21.2%, 20=3.0%, 50=5.0%, 100=9.9%
     lat (msec): 250=5.4%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12321
  read : io=100MiB, bw=6,289KiB/s, runt= 16671msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  170, avg=26.50, stdev=41.82
    bw (KiB/s) : min=    4, max=33840, per=93.36%, avg=13058.57, stdev=12548.45
  write: io=73,804KiB, bw=5,366KiB/s, runt= 14084msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  100, avg= 1.23, stdev= 6.17
    bw (KiB/s) : min=    0, max=25417, per=86.09%, avg=14031.33, stdev=12913.39
  cpu          : usr=9.29%, sys=3.98%, ctx=6293
  IO depths    : 1=2.3%, 2=53.8%, 4=26.4%, 8=17.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.3%, 4=16.0%, 10=20.4%, 20=3.1%, 50=1.2%, 100=7.1%
     lat (msec): 250=5.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=224MiB, aggrb=13,988KiB/s, minb=0KiB/s, maxb=6,289KiB/s, mint=16671msec, maxt=16760msec
  WRITE: io=219MiB, aggrb=16,299KiB/s, minb=0KiB/s, maxb=5,366KiB/s, mint=16671msec, maxt=16760msec

Disk stats (read/write):
  cciss!c0d0: ios=3038/3424, merge=5594/52581, ticks=241984/1414244, in_queue=1656684, util=97.95%
4.54user 1.76system 0:17.07elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k
574176inputs+448528outputs (0major+2446minor)pagefaults 0swaps