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] [13.6% done] [ 18249/ 51187 kb/s] [eta 00m:19s]
Threads: 3: [Fmm] [33.3% done] [ 15110/ 70665 kb/s] [eta 00m:08s]
Threads: 3: [Fmm] [35.7% done] [  9228/   828 kb/s] [eta 00m:09s]
Threads: 3: [FFm] [37.5% done] [  2631/ 45625 kb/s] [eta 00m:10s]
Threads: 3: [FFm] [43.8% done] [  1671/  8704 kb/s] [eta 00m:09s]
Threads: 3: [FFm] [50.0% done] [  1728/  7773 kb/s] [eta 00m:08s]
Threads: 3: [FFm] [52.9% done] [  1574/     0 kb/s] [eta 00m:08s]
Threads: 3: [FFm] [66.7% done] [  1049/ 21679 kb/s] [eta 00m:05s]
Threads: 3: [FFm] [68.8% done] [  2275/     0 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6022, got signal=6
Threads: 2: [FF_] [100.0% done] [   817/     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] [ 49420/     0 kb/s] [eta 00m:04s]
Threads: 2: [VV_] [100.0% done] [ 60610/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=6020
  read : io=100MiB, bw=6,152KiB/s, runt= 17042msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  321, avg=21.43, stdev=45.91
    bw (KiB/s) : min=   17, max=50208, per=104.59%, avg=15555.08, stdev=16524.52
  write: io=90,664KiB, bw=6,531KiB/s, runt= 14215msec
    slat (msec): min=    0, max=    2, avg= 0.00, stdev= 0.05
    clat (msec): min=    0, max=  197, avg= 1.11, stdev=10.39
    bw (KiB/s) : min=    0, max=59502, per=149.44%, avg=23771.50, stdev=25637.90
  cpu          : usr=10.59%, sys=4.65%, ctx=11645
  IO depths    : 1=49.7%, 2=15.8%, 4=24.1%, 8=10.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=56.7%, 4=11.0%, 10=20.5%, 20=2.6%, 50=1.4%, 100=2.5%
     lat (msec): 250=5.1%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6021
  read : io=100MiB, bw=6,137KiB/s, runt= 17064msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  370, avg=32.38, stdev=57.43
    bw (KiB/s) : min=   25, max=32737, per=80.83%, avg=12021.75, stdev=11047.60
  write: io=70,964KiB, bw=5,113KiB/s, runt= 14212msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  119, avg= 1.04, stdev= 6.84
    bw (KiB/s) : min=    0, max=58089, per=157.20%, avg=25005.33, stdev=29875.20
  cpu          : usr=8.16%, sys=4.45%, ctx=9408
  IO depths    : 1=29.7%, 2=27.5%, 4=26.9%, 8=15.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.8%, 4=14.0%, 10=21.6%, 20=4.3%, 50=0.5%, 100=4.2%
     lat (msec): 250=7.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6022
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=53.2%, 2=11.7%, 4=8.4%, 8=26.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=62.4%, 4=1.3%, 10=0.2%, 20=1.0%, 50=4.1%, 100=5.9%
     lat (msec): 250=20.9%, 500=4.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=242MiB, aggrb=14,873KiB/s, minb=0KiB/s, maxb=6,152KiB/s, mint=0msec, maxt=17064msec
  WRITE: io=216MiB, aggrb=15,907KiB/s, minb=0KiB/s, maxb=6,531KiB/s, mint=0msec, maxt=17064msec

Disk stats (read/write):
  cciss!c0d0: ios=5128/3192, merge=1040/51966, ticks=54988/1416460, in_queue=1471548, util=96.85%
4.25user 1.97system 0:17.81elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
630720inputs+441672outputs (0major+2453minor)pagefaults 0swaps