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] [ 14766/  6895 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [  8874/ 11430 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 11564/  7497 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14665/  5217 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 10195/  6993 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 11784/  6123 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  9256/  7196 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  7378/  7858 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 13657/  2064 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  4506/  9585 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 10922/  3441 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 11654/  1999 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9400/  2106 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9984/  1519 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6745/  1852 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [ 10333/   516 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3388/  5006 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3801, got signal=6
Threads: 2: [m_m] [64.5% done] [  4169/  3267 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3802, got signal=6
Threads: 1: [V__] [67.7% done] [  7643/   487 kb/s] [eta 00m:10s]
Threads: 1: [V__] [78.6% done] [ 15047/     0 kb/s] [eta 00m:06s]
fio: (groupid=0): err= 0: pid=3800
  read : io=99MiB, bw=4,666KiB/s, runt= 22325msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  347, avg=81.17, stdev=43.70
    bw (KiB/s) : min=   55, max=15441, per=49.85%, avg=4896.81, stdev=3313.83
  write: io=19,496KiB, bw=949KiB/s, runt= 21033msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   39, max=  435, avg=124.93, stdev=54.91
    bw (KiB/s) : min=    0, max= 6610, per=32.93%, avg=1789.14, stdev=2175.79
  cpu          : usr=0.16%, sys=0.29%, ctx=7589
  IO depths    : 1=0.1%, 2=0.5%, 4=11.0%, 8=88.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.3%, 10=1.3%, 20=4.4%, 50=16.8%, 100=39.0%
     lat (msec): 250=36.8%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3801
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.5%, 50=8.9%, 100=48.3%
     lat (msec): 250=40.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3802
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=8.6%, 100=37.6%
     lat (msec): 250=52.0%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=209MiB, aggrb=9,824KiB/s, minb=0KiB/s, maxb=4,666KiB/s, mint=0msec, maxt=22325msec
  WRITE: io=109MiB, aggrb=5,433KiB/s, minb=0KiB/s, maxb=949KiB/s, mint=0msec, maxt=22325msec

Disk stats (read/write):
  cciss!c0d0: ios=4188/2212, merge=670/226, ticks=46072/34640, in_queue=80692, util=98.87%
0.22user 0.48system 0:22.78elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
428944inputs+223224outputs (0major+2438minor)pagefaults 0swaps