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: [mmm] [23.1% done] [  8688/ 35391 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [26.7% done] [  9892/ 18922 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [35.7% done] [  4453/ 30787 kb/s] [eta 00m:09s]
Threads: 3: [mmm] [37.5% done] [  4750/  1260 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [50.0% done] [  4925/ 17567 kb/s] [eta 00m:07s]
Threads: 3: [FFm] [53.3% done] [  5022/ 35023 kb/s] [eta 00m:07s]
Threads: 3: [FFF] [100.0% done] [   349/ 23518 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16705, got signal=6
Threads: 2: [VV_] [71.4% done] [ 19760/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [84.2% done] [ 56701/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [100.0% done] [ 57242/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=16703
  read : io=100MiB, bw=5,886KiB/s, runt= 17812msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  433, avg=41.61, stdev=76.89
    bw (KiB/s) : min=   12, max=46221, per=68.67%, avg=9373.10, stdev=14359.34
  write: io=82,768KiB, bw=5,778KiB/s, runt= 14667msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  269, avg= 2.01, stdev=17.19
    bw (KiB/s) : min=    0, max=56582, per=85.54%, avg=14138.00, stdev=24054.48
  cpu          : usr=9.25%, sys=4.09%, ctx=10910
  IO depths    : 1=42.9%, 2=15.7%, 4=25.7%, 8=15.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.3%, 4=12.1%, 10=18.8%, 20=5.8%, 50=1.1%, 100=3.0%
     lat (msec): 250=8.1%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16704
  read : io=100MiB, bw=5,905KiB/s, runt= 17757msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  363, avg=40.95, stdev=78.33
    bw (KiB/s) : min=   10, max=48211, per=65.22%, avg=8901.53, stdev=13964.01
  write: io=84,228KiB, bw=5,880KiB/s, runt= 14668msec
    slat (msec): min=    0, max=    2, avg= 0.00, stdev= 0.06
    clat (msec): min=    0, max=  206, avg= 2.20, stdev=14.83
    bw (KiB/s) : min=    0, max=62751, per=117.78%, avg=19466.50, stdev=29109.38
  cpu          : usr=10.05%, sys=3.96%, ctx=10179
  IO depths    : 1=34.8%, 2=26.7%, 4=23.5%, 8=15.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.7%, 4=13.5%, 10=21.6%, 20=5.1%, 50=1.5%, 100=1.1%
     lat (msec): 250=8.3%, 500=2.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16705
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=48.0%, 2=28.9%, 4=4.1%, 8=19.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=71.8%, 4=3.9%, 10=0.7%, 20=0.3%, 50=0.4%, 100=5.0%
     lat (msec): 250=14.1%, 500=3.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=232MiB, aggrb=13,649KiB/s, minb=0KiB/s, maxb=5,905KiB/s, mint=0msec, maxt=17812msec
  WRITE: io=231MiB, aggrb=16,528KiB/s, minb=0KiB/s, maxb=5,880KiB/s, mint=0msec, maxt=17812msec

Disk stats (read/write):
  cciss!c0d0: ios=4770/3723, merge=961/55560, ticks=55756/1799128, in_queue=1854888, util=99.04%
4.61user 2.05system 0:18.13elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k
576256inputs+473560outputs (0major+2456minor)pagefaults 0swaps