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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13470, got signal=6
Threads: 2: [m_F] [50.0% done] [  7487/125472 kb/s] [eta 00m:03s]
Threads: 2: [F_F] [100.0% done] [     0/ 31585 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [68.4% done] [ 11633/     0 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [93.3% done] [ 63551/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 64413/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13469
  read : io=100MiB, bw=6,853KiB/s, runt= 15289msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  291, avg=19.22, stdev=35.83
    bw (KiB/s) : min=    0, max=42268, per=128.93%, avg=18007.20, stdev=14466.59
  write: io=77,624KiB, bw=6,190KiB/s, runt= 12840msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  262, avg= 1.15, stdev=11.35
    bw (KiB/s) : min=    0, max=21915, per=53.16%, avg=10957.50, stdev=15496.25
  cpu          : usr=8.03%, sys=4.06%, ctx=9037
  IO depths    : 1=38.6%, 2=23.4%, 4=24.2%, 8=13.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.5%, 4=13.1%, 10=21.2%, 20=3.1%, 50=3.0%, 100=4.5%
     lat (msec): 250=3.4%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13470
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=87.4%, 4=6.4%, 8=5.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=70.9%, 4=17.5%, 10=5.1%, 20=0.6%, 50=0.4%, 100=2.4%
     lat (msec): 250=2.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13471
  read : io=100MiB, bw=6,731KiB/s, runt= 15576msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  265, avg=17.22, stdev=36.94
    bw (KiB/s) : min=   17, max=42436, per=136.00%, avg=18995.50, stdev=15307.38
  write: io=86,292KiB, bw=6,880KiB/s, runt= 12843msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   86, avg= 1.05, stdev= 4.76
    bw (KiB/s) : min=    0, max=60801, per=140.59%, avg=28981.00, stdev=30499.76
  cpu          : usr=11.25%, sys=5.21%, ctx=5439
  IO depths    : 1=3.0%, 2=59.4%, 4=26.6%, 8=10.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.6%, 4=19.0%, 10=18.1%, 20=2.3%, 50=0.6%, 100=3.5%
     lat (msec): 250=3.7%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=207MiB, aggrb=13,967KiB/s, minb=0KiB/s, maxb=6,853KiB/s, mint=15576msec, maxt=15576msec
  WRITE: io=252MiB, aggrb=20,614KiB/s, minb=0KiB/s, maxb=6,880KiB/s, mint=15576msec, maxt=15576msec

Disk stats (read/write):
  cciss!c0d0: ios=1578/3657, merge=5748/60901, ticks=123804/1490084, in_queue=1614456, util=98.10%
4.62user 1.97system 0:15.95elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
506344inputs+517128outputs (0major+2457minor)pagefaults 0swaps