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=6028, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_Fm] [50.0% done] [ 11329/ 59489 kb/s] [eta 00m:03s]
fio: pid=6029, got signal=6
Threads: 1: [__F] [100.0% done] [  3360/ 28220 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [83.3% done] [ 22346/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [100.0% done] [ 53732/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=6028
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=6.8%, 2=51.1%, 4=29.2%, 8=12.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=27.5%, 4=45.1%, 10=18.1%, 20=1.5%, 50=1.5%, 100=4.3%
     lat (msec): 250=1.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6029
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=85.7%, 4=6.0%, 8=7.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=69.4%, 4=14.3%, 10=3.4%, 20=0.5%, 50=6.1%, 100=5.2%
     lat (msec): 250=0.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6030
  read : io=100MiB, bw=6,471KiB/s, runt= 16174msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  150, avg=16.26, stdev=26.25
    bw (KiB/s) : min=    5, max=62291, per=208.45%, avg=15511.10, stdev=21349.11
  write: io=77,136KiB, bw=5,379KiB/s, runt= 14683msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  106, avg= 1.40, stdev= 6.96
    bw (KiB/s) : min=    0, max=27956, per=78.98%, avg=14679.67, stdev=14030.73
  cpu          : usr=10.51%, sys=4.11%, ctx=5983
  IO depths    : 1=0.8%, 2=54.6%, 4=28.1%, 8=16.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=40.8%, 4=16.5%, 10=24.3%, 20=5.7%, 50=6.4%, 100=4.4%
     lat (msec): 250=1.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=115MiB, aggrb=7,441KiB/s, minb=0KiB/s, maxb=6,471KiB/s, mint=16174msec, maxt=16174msec
  WRITE: io=260MiB, aggrb=18,587KiB/s, minb=0KiB/s, maxb=5,379KiB/s, mint=16174msec, maxt=16174msec

Disk stats (read/write):
  cciss!c0d0: ios=2515/4107, merge=500/62406, ticks=13540/1557172, in_queue=1572396, util=91.51%
4.38user 1.39system 0:16.54elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
300688inputs+533240outputs (0major+2472minor)pagefaults 0swaps