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] [13.0% done] [ 17399/ 19289 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 16766/  3062 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [35.7% done] [ 12182/ 71293 kb/s] [eta 00m:09s]
Threads: 3: [Fmm] [40.0% done] [  4071/ 20362 kb/s] [eta 00m:09s]
Threads: 3: [Fmm] [41.2% done] [  5950/     0 kb/s] [eta 00m:10s]
Threads: 3: [Fmm] [57.1% done] [  2149/ 27245 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17437, got signal=6
Threads: 2: [Fm_] [64.3% done] [  1387/ 25698 kb/s] [eta 00m:05s]
Threads: 2: [FF_] [100.0% done] [   488/  9696 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_] [71.4% done] [  8928/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [88.9% done] [ 55342/     0 kb/s] [eta 00m:02s]
Threads: 2: [VV_] [100.0% done] [ 51747/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=17435
  read : io=100MiB, bw=5,838KiB/s, runt= 17959msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  286, avg=30.12, stdev=56.61
    bw (KiB/s) : min=    0, max=32088, per=79.84%, avg=11110.87, stdev=11020.94
  write: io=82,300KiB, bw=5,665KiB/s, runt= 14875msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  183, avg= 1.84, stdev=10.70
    bw (KiB/s) : min=    0, max=59375, per=142.49%, avg=21084.75, stdev=26205.56
  cpu          : usr=9.51%, sys=4.43%, ctx=6787
  IO depths    : 1=1.4%, 2=57.6%, 4=27.7%, 8=13.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.9%, 4=16.5%, 10=24.1%, 20=4.4%, 50=2.1%, 100=2.1%
     lat (msec): 250=7.7%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17436
  read : io=100MiB, bw=5,976KiB/s, runt= 17534msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  363, avg=48.50, stdev=74.54
    bw (KiB/s) : min=   21, max=32088, per=51.78%, avg=7205.70, stdev=9015.49
  write: io=69,680KiB, bw=4,796KiB/s, runt= 14875msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  263, avg= 2.45, stdev=17.10
    bw (KiB/s) : min=    0, max= 9133, per=39.25%, avg=5808.00, stdev=4000.68
  cpu          : usr=7.62%, sys=4.24%, ctx=9028
  IO depths    : 1=26.0%, 2=26.6%, 4=26.8%, 8=20.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.3%, 4=11.7%, 10=22.0%, 20=4.9%, 50=1.5%, 100=2.7%
     lat (msec): 250=12.9%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17437
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=36.5%, 2=37.3%, 4=4.6%, 8=21.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=73.0%, 4=1.0%, 10=0.0%, 20=0.1%, 50=0.8%, 100=6.7%
     lat (msec): 250=15.4%, 500=2.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=238MiB, aggrb=13,916KiB/s, minb=0KiB/s, maxb=5,976KiB/s, mint=0msec, maxt=17959msec
  WRITE: io=210MiB, aggrb=14,797KiB/s, minb=0KiB/s, maxb=5,665KiB/s, mint=0msec, maxt=17959msec

Disk stats (read/write):
  cciss!c0d0: ios=5146/3423, merge=1029/50248, ticks=57728/1468320, in_queue=1526276, util=98.70%
4.09user 1.98system 0:18.28elapsed 33%CPU (0avgtext+0avgdata 0maxresident)k
633584inputs+429936outputs (0major+2454minor)pagefaults 0swaps