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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15842, got signal=6
Threads: 2
Threads: 2: [_mm] [33.3% done] [ 16587/ 24096 kb/s] [eta 00m:06s]
Threads: 2: [_mm] [40.0% done] [ 15847/ 25743 kb/s] [eta 00m:06s]
Threads: 2: [_mm] [55.6% done] [ 12125/ 27752 kb/s] [eta 00m:04s]
Threads: 2: [_Fm] [60.0% done] [  3344/ 11662 kb/s] [eta 00m:04s]
Threads: 2: [_Fm] [63.6% done] [   630/ 10563 kb/s] [eta 00m:04s]
Threads: 2: [_FF] [100.0% done] [  1430/  3490 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [68.2% done] [  8342/     0 kb/s] [eta 00m:07s]
Threads: 2: [_VV] [84.2% done] [ 44746/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 47341/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15842
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=93.8%, 4=4.0%, 8=2.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=85.6%, 4=10.7%, 10=1.0%, 20=0.1%, 50=0.1%, 100=0.5%
     lat (msec): 250=1.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15843
  read : io=100MiB, bw=5,904KiB/s, runt= 17758msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  278, avg=33.39, stdev=45.96
    bw (KiB/s) : min=   21, max=30313, per=95.05%, avg=11283.82, stdev=8906.54
  write: io=63,196KiB, bw=4,344KiB/s, runt= 14895msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  187, avg= 1.60, stdev=10.60
    bw (KiB/s) : min=    0, max=16566, per=50.74%, avg=7926.33, stdev=8306.01
  cpu          : usr=7.77%, sys=3.63%, ctx=7804
  IO depths    : 1=6.0%, 2=47.1%, 4=25.7%, 8=21.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.7%, 4=12.5%, 10=17.8%, 20=5.3%, 50=6.1%, 100=9.8%
     lat (msec): 250=6.5%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15844
  read : io=100MiB, bw=5,929KiB/s, runt= 17670msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  383, avg=42.48, stdev=57.15
    bw (KiB/s) : min=    8, max=24724, per=71.66%, avg=8506.65, stdev=8296.14
  write: io=62,836KiB, bw=4,319KiB/s, runt= 14895msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  319, avg= 2.48, stdev=20.33
    bw (KiB/s) : min=    0, max=25088, per=64.50%, avg=10076.25, stdev=10631.20
  cpu          : usr=6.99%, sys=3.96%, ctx=8730
  IO depths    : 1=22.2%, 2=22.9%, 4=28.2%, 8=26.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=40.1%, 4=4.8%, 10=17.9%, 20=8.7%, 50=8.9%, 100=9.6%
     lat (msec): 250=8.5%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=201MiB, aggrb=11,871KiB/s, minb=0KiB/s, maxb=5,929KiB/s, mint=17670msec, maxt=17758msec
  WRITE: io=222MiB, aggrb=15,623KiB/s, minb=0KiB/s, maxb=4,344KiB/s, mint=17670msec, maxt=17758msec

Disk stats (read/write):
  cciss!c0d0: ios=4677/3358, merge=1042/53481, ticks=38232/1491268, in_queue=1529496, util=98.13%
3.83user 1.74system 0:18.07elapsed 30%CPU (0avgtext+0avgdata 0maxresident)k
548904inputs+454560outputs (0major+2453minor)pagefaults 0swaps