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] [42.9% done] [  6186/ 81281 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [44.4% done] [  1865/ 21690 kb/s] [eta 00m:05s]
Threads: 3: [mFF] [45.5% done] [  2302/     0 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [46.2% done] [  1862/     0 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [46.7% done] [  1492/     0 kb/s] [eta 00m:08s]
Threads: 3: [mFF] [61.5% done] [  1098/ 18055 kb/s] [eta 00m:05s]
Threads: 3: [mFF] [60.0% done] [   996/     0 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [62.5% done] [  1385/  2486 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8158, got signal=6
Threads: 2: [_FF] [100.0% done] [     0/  9635 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [70.6% done] [  8647/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [92.9% done] [ 65300/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 69139/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=8158
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=17.4%, 2=57.3%, 4=4.2%, 8=21.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=66.7%, 4=7.7%, 10=1.3%, 20=0.7%, 50=0.7%, 100=7.1%
     lat (msec): 250=6.9%, 500=8.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8159
  read : io=100MiB, bw=7,043KiB/s, runt= 14882msec
    slat (msec): min=    0, max=   42, avg= 0.69, stdev= 5.38
    clat (msec): min=    0, max=  158, avg=13.46, stdev=26.83
    bw (KiB/s) : min=    2, max=41523, per=166.57%, avg=26393.29, stdev=14910.87
  write: io=94,668KiB, bw=8,135KiB/s, runt= 11915msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  103, avg= 0.89, stdev= 4.47
    bw (KiB/s) : min=    0, max=57172, per=177.19%, avg=39485.25, stdev=26520.14
  cpu          : usr=13.36%, sys=5.62%, ctx=6813
  IO depths    : 1=5.9%, 2=61.2%, 4=24.7%, 8=8.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.0%, 4=17.5%, 10=21.9%, 20=2.4%, 50=0.9%, 100=3.9%
     lat (msec): 250=2.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8160
  read : io=100MiB, bw=7,071KiB/s, runt= 14828msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  303, avg=21.72, stdev=40.46
    bw (KiB/s) : min=    4, max=35809, per=107.06%, avg=16963.82, stdev=14510.39
  write: io=87,772KiB, bw=7,543KiB/s, runt= 11915msec
    slat (msec): min=    0, max=   43, avg= 0.03, stdev= 1.13
    clat (msec): min=    0, max=  203, avg= 0.84, stdev= 7.88
    bw (KiB/s) : min=    0, max=120381, per=195.46%, avg=43556.33, stdev=66730.67
  cpu          : usr=8.66%, sys=4.83%, ctx=9895
  IO depths    : 1=40.4%, 2=22.4%, 4=25.7%, 8=11.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.4%, 4=13.8%, 10=21.7%, 20=2.8%, 50=0.8%, 100=4.6%
     lat (msec): 250=4.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=225MiB, aggrb=15,845KiB/s, minb=0KiB/s, maxb=7,071KiB/s, mint=14828msec, maxt=14882msec
  WRITE: io=253MiB, aggrb=22,284KiB/s, minb=0KiB/s, maxb=8,135KiB/s, mint=14828msec, maxt=14882msec

Disk stats (read/write):
  cciss!c0d0: ios=4360/3198, merge=819/61508, ticks=37592/1336028, in_queue=1377232, util=98.37%
4.62user 1.93system 0:15.16elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k
536160inputs+518680outputs (1major+2447minor)pagefaults 0swaps