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=7689, got signal=6
Threads: 2
Threads: 2: [mm_] [33.3% done] [ 12840/     0 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [36.4% done] [  4754/  7533 kb/s] [eta 00m:07s]
Threads: 2: [mF_] [50.0% done] [  1663/ 19674 kb/s] [eta 00m:05s]
Threads: 2: [mF_] [50.0% done] [  1972/     0 kb/s] [eta 00m:06s]
Threads: 2: [FF_] [100.0% done] [   736/ 26235 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_] [68.4% done] [   715/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [87.5% done] [ 56351/     0 kb/s] [eta 00m:02s]
Threads: 2: [VV_] [100.0% done] [ 52857/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=7687
  read : io=100MiB, bw=6,639KiB/s, runt= 15794msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  407, avg=37.81, stdev=62.98
    bw (KiB/s) : min=   28, max=28890, per=77.81%, avg=10448.11, stdev=10003.56
  write: io=68,932KiB, bw=5,446KiB/s, runt= 12959msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  263, avg= 1.94, stdev=14.76
    bw (KiB/s) : min=    0, max= 9155, per=27.56%, avg=5613.33, stdev=4916.54
  cpu          : usr=8.74%, sys=4.56%, ctx=7192
  IO depths    : 1=10.5%, 2=41.9%, 4=28.1%, 8=19.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.2%, 4=9.8%, 10=19.7%, 20=6.9%, 50=2.7%, 100=8.2%
     lat (msec): 250=6.0%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7688
  read : io=100MiB, bw=6,551KiB/s, runt= 16002msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  227, avg=21.38, stdev=36.02
    bw (KiB/s) : min=    0, max=33546, per=112.78%, avg=15142.91, stdev=13578.37
  write: io=91,516KiB, bw=7,231KiB/s, runt= 12959msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   55, avg= 0.14, stdev= 2.02
    bw (KiB/s) : min=    0, max=60432, per=134.26%, avg=27349.33, stdev=30621.23
  cpu          : usr=8.85%, sys=4.50%, ctx=9541
  IO depths    : 1=36.0%, 2=22.1%, 4=26.8%, 8=15.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.0%, 4=10.4%, 10=19.3%, 20=4.2%, 50=4.5%, 100=6.3%
     lat (msec): 250=2.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7689
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=90.9%, 4=6.7%, 8=2.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=94.5%, 4=2.4%, 10=0.2%, 20=0.1%, 50=0.2%, 100=0.5%
     lat (msec): 250=1.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=205MiB, aggrb=13,427KiB/s, minb=0KiB/s, maxb=6,639KiB/s, mint=0msec, maxt=16002msec
  WRITE: io=252MiB, aggrb=20,370KiB/s, minb=0KiB/s, maxb=7,231KiB/s, mint=0msec, maxt=16002msec

Disk stats (read/write):
  cciss!c0d0: ios=4311/3368, merge=888/60968, ticks=31828/1445464, in_queue=1478636, util=95.18%
3.61user 1.88system 0:17.01elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
520000inputs+515608outputs (0major+2452minor)pagefaults 0swaps