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: [FmF] [50.0% done] [  1740/ 34456 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [57.1% done] [  1426/     0 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [62.5% done] [  1277/ 10067 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [66.7% done] [   902/  4417 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [63.6% done] [  1049/     0 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [66.7% done] [   907/     0 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [64.3% done] [   980/     0 kb/s] [eta 00m:05s]
Threads: 3: [FmF] [66.7% done] [  1175/     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=31309, got signal=6
Threads: 2: [F_F] [100.0% done] [   101/  4596 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [80.0% done] [ 40890/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 63864/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 59666/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=31308
  read : io=100MiB, bw=7,181KiB/s, runt= 14597msec
    clat (msec): min=    0, max=  142, avg=10.55, stdev=23.82
    bw (KiB/s) : min=    0, max=36578, per=157.32%, avg=24665.33, stdev=13534.72
  write: io=100MiB, bw=9,156KiB/s, runt= 11452msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.04
    clat (msec): min=    0, max=    8, avg= 0.21, stdev= 0.77
    bw (KiB/s) : min=    0, max=60279, per=179.63%, avg=43921.75, stdev=29313.65
  cpu          : usr=14.11%, sys=4.69%, ctx=11268
  IO depths    : 1=53.2%, 2=16.2%, 4=23.9%, 8=6.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=58.2%, 4=16.1%, 10=17.5%, 20=2.9%, 50=2.0%, 100=1.4%
     lat (msec): 250=1.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31309
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=49.8%, 2=28.1%, 4=3.6%, 8=18.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=69.1%, 4=6.8%, 10=2.1%, 20=0.2%, 50=1.2%, 100=3.1%
     lat (msec): 250=10.2%, 500=7.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31310
  read : io=100MiB, bw=7,406KiB/s, runt= 14157msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  256, avg=17.73, stdev=33.81
    bw (KiB/s) : min=    6, max=42344, per=131.46%, avg=20609.62, stdev=15603.63
  write: io=87,444KiB, bw=7,819KiB/s, runt= 11451msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   79, avg= 0.32, stdev= 3.38
    bw (KiB/s) : min=    0, max=120307, per=246.02%, avg=60153.50, stdev=85069.90
  cpu          : usr=7.49%, sys=4.78%, ctx=10324
  IO depths    : 1=47.5%, 2=16.7%, 4=25.3%, 8=10.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=55.5%, 4=11.2%, 10=21.0%, 20=3.2%, 50=1.2%, 100=4.8%
     lat (msec): 250=3.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=218MiB, aggrb=15,678KiB/s, minb=0KiB/s, maxb=7,406KiB/s, mint=14157msec, maxt=14597msec
  WRITE: io=267MiB, aggrb=24,451KiB/s, minb=0KiB/s, maxb=9,156KiB/s, mint=14157msec, maxt=14597msec

Disk stats (read/write):
  cciss!c0d0: ios=4085/3135, merge=812/65112, ticks=33596/1371256, in_queue=1407944, util=95.97%
4.24user 1.77system 0:14.89elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
502048inputs+547056outputs (0major+2451minor)pagefaults 0swaps