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] [10.7% done] [ 14858/ 21964 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [17.4% done] [ 16514/ 51222 kb/s] [eta 00m:19s]
Threads: 3: [mmF] [21.7% done] [ 11368/ 59914 kb/s] [eta 00m:18s]
Threads: 3: [mFF] [33.3% done] [  2031/ 28712 kb/s] [eta 00m:12s]
Threads: 3: [mFF] [58.3% done] [   841/ 36132 kb/s] [eta 00m:05s]
Threads: 3: [mFF] [66.7% done] [  1216/  8261 kb/s] [eta 00m:04s]
Threads: 3: [FFF] [100.0% done] [   475/  6777 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12457, got signal=6
Threads: 2: [VV_] [70.0% done] [ 15368/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [83.3% done] [ 56693/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [100.0% done] [ 56103/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=12455
  read : io=100MiB, bw=6,305KiB/s, runt= 16614msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  363, avg=43.81, stdev=72.34
    bw (KiB/s) : min=   16, max=26188, per=57.39%, avg=8042.65, stdev=8180.59
  write: io=65,212KiB, bw=4,832KiB/s, runt= 13819msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  258, avg= 2.38, stdev=17.68
    bw (KiB/s) : min=    0, max=60211, per=125.14%, avg=21394.75, stdev=26633.44
  cpu          : usr=7.73%, sys=4.91%, ctx=6711
  IO depths    : 1=1.1%, 2=51.6%, 4=28.2%, 8=19.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.6%, 4=11.7%, 10=22.1%, 20=6.1%, 50=1.1%, 100=5.4%
     lat (msec): 250=8.6%, 500=2.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12456
  read : io=100MiB, bw=6,397KiB/s, runt= 16388msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  300, avg=28.32, stdev=54.57
    bw (KiB/s) : min=    5, max=45916, per=87.12%, avg=12210.14, stdev=15350.08
  write: io=85,824KiB, bw=6,392KiB/s, runt= 13747msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  211, avg= 2.08, stdev=12.86
    bw (KiB/s) : min=    0, max=60589, per=119.70%, avg=20464.75, stdev=27216.05
  cpu          : usr=10.52%, sys=4.93%, ctx=6286
  IO depths    : 1=1.1%, 2=58.0%, 4=27.4%, 8=13.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.3%, 4=16.4%, 10=22.2%, 20=4.8%, 50=1.7%, 100=3.2%
     lat (msec): 250=6.6%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12457
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=84.0%, 4=4.3%, 8=11.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=76.2%, 4=10.8%, 10=0.8%, 20=0.0%, 50=0.2%, 100=2.5%
     lat (msec): 250=8.4%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=222MiB, aggrb=14,015KiB/s, minb=0KiB/s, maxb=6,397KiB/s, mint=0msec, maxt=16614msec
  WRITE: io=225MiB, aggrb=17,096KiB/s, minb=0KiB/s, maxb=6,392KiB/s, mint=0msec, maxt=16614msec

Disk stats (read/write):
  cciss!c0d0: ios=4959/3053, merge=1050/54575, ticks=52668/1388208, in_queue=1440968, util=97.95%
4.17user 2.24system 0:16.95elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k
614920inputs+461472outputs (0major+2454minor)pagefaults 0swaps