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: [mFF] [42.9% done] [  3079/ 19227 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [57.1% done] [  2438/ 16839 kb/s] [eta 00m:03s]
Threads: 3: [mFF] [55.6% done] [  2163/   821 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [54.5% done] [  1708/     0 kb/s] [eta 00m:05s]
Threads: 3: [mFF] [58.3% done] [  1858/     0 kb/s] [eta 00m:05s]
Threads: 3: [mFF] [57.1% done] [  1464/     0 kb/s] [eta 00m:06s]
Threads: 3: [mVV] [60.0% done] [ 23568/     0 kb/s] [eta 00m:06s]
Threads: 3: [mVV] [58.8% done] [ 71789/     0 kb/s] [eta 00m:07s]
Threads: 3: [mVV] [57.9% done] [ 65133/   215 kb/s] [eta 00m:08s]
Threads: 1: [m__] [66.7% done] [ 48306/  9902 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32665, got signal=6

fio: (groupid=0): err= 0: pid=32665
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=8.6%, 2=54.6%, 4=10.8%, 8=26.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=53.1%, 4=9.3%, 10=1.7%, 20=3.7%, 50=5.2%, 100=7.3%
     lat (msec): 250=14.2%, 500=3.8%, 750=0.7%, 1000=0.7%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32666
  read : io=100MiB, bw=8,878KiB/s, runt= 11808msec
    clat (msec): min=    0, max=  288, avg=11.26, stdev=28.18
    bw (KiB/s) : min=    0, max=41179, per=120.08%, avg=25127.00, stdev=13847.85
  write: io=100MiB, bw=12,132KiB/s, runt=  8643msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   13, avg= 0.03, stdev= 0.53
    bw (KiB/s) : min=    0, max=59416, per=124.57%, avg=39072.67, stdev=33847.54
  cpu          : usr=14.02%, sys=5.66%, ctx=10239
  IO depths    : 1=51.7%, 2=17.2%, 4=24.7%, 8=6.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=59.3%, 4=15.4%, 10=18.3%, 20=2.6%, 50=0.9%, 100=1.0%
     lat (msec): 250=2.2%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32667
  read : io=100MiB, bw=9,118KiB/s, runt= 11500msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  181, avg=12.17, stdev=28.05
    bw (KiB/s) : min=   10, max=40025, per=111.47%, avg=23326.00, stdev=17390.77
  write: io=97,328KiB, bw=11,493KiB/s, runt=  8671msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  141, avg= 0.30, stdev= 5.38
    bw (KiB/s) : min=    0, max=25729, per=41.02%, avg=12864.50, stdev=18193.15
  cpu          : usr=11.79%, sys=5.63%, ctx=12738
  IO depths    : 1=66.0%, 2=8.8%, 4=19.1%, 8=6.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.4%, 4=9.8%, 10=14.9%, 20=2.1%, 50=0.8%, 100=2.5%
     lat (msec): 250=2.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=236MiB, aggrb=20,926KiB/s, minb=0KiB/s, maxb=9,118KiB/s, mint=11500msec, maxt=11808msec
  WRITE: io=259MiB, aggrb=31,365KiB/s, minb=0KiB/s, maxb=12,132KiB/s, mint=11500msec, maxt=11808msec

Disk stats (read/write):
  cciss!c0d0: ios=4252/2640, merge=893/61199, ticks=37152/1006772, in_queue=1046340, util=97.49%
4.17user 1.57system 0:12.57elapsed 45%CPU (0avgtext+0avgdata 0maxresident)k
519648inputs+531208outputs (0major+2438minor)pagefaults 0swaps