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] [18.8% done] [ 13016/ 38019 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [26.7% done] [  6780/ 35448 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [35.7% done] [  5055/ 51535 kb/s] [eta 00m:09s]
Threads: 3: [mFm] [37.5% done] [  4327/ 30722 kb/s] [eta 00m:10s]
Threads: 3: [mFF] [58.3% done] [  1423/ 50071 kb/s] [eta 00m:05s]
Threads: 3: [FFF] [100.0% done] [     0/ 14921 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=27918, got signal=6
Threads: 2: [V_V] [82.4% done] [ 47911/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 62906/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 61086/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=27917
  read : io=100MiB, bw=6,526KiB/s, runt= 16047msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  475, avg=37.24, stdev=76.04
    bw (KiB/s) : min=    0, max=35485, per=74.48%, avg=10545.89, stdev=12907.33
  write: io=82,116KiB, bw=6,357KiB/s, runt= 13227msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  256, avg= 2.39, stdev=18.00
    bw (KiB/s) : min=    0, max=59813, per=92.57%, avg=18140.00, stdev=27967.01
  cpu          : usr=10.59%, sys=4.84%, ctx=7055
  IO depths    : 1=8.3%, 2=51.5%, 4=26.7%, 8=13.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.1%, 4=14.8%, 10=23.0%, 20=3.3%, 50=0.9%, 100=1.9%
     lat (msec): 250=7.0%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27918
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=87.1%, 4=3.6%, 8=9.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=74.1%, 4=14.6%, 10=0.9%, 20=0.2%, 50=0.3%, 100=0.8%
     lat (msec): 250=6.1%, 500=2.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27919
  read : io=100MiB, bw=6,488KiB/s, runt= 16160msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  324, avg=32.27, stdev=67.80
    bw (KiB/s) : min=   34, max=35638, per=75.89%, avg=10745.65, stdev=13598.22
  write: io=87,392KiB, bw=6,765KiB/s, runt= 13227msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  215, avg= 2.37, stdev=13.58
    bw (KiB/s) : min=    0, max=21328, per=60.67%, avg=11889.50, stdev=8952.11
  cpu          : usr=10.74%, sys=5.59%, ctx=8365
  IO depths    : 1=24.6%, 2=34.2%, 4=28.8%, 8=12.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.9%, 4=17.1%, 10=24.3%, 20=3.0%, 50=0.9%, 100=2.0%
     lat (msec): 250=6.1%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=218MiB, aggrb=14,159KiB/s, minb=0KiB/s, maxb=6,526KiB/s, mint=16160msec, maxt=16160msec
  WRITE: io=247MiB, aggrb=19,596KiB/s, minb=0KiB/s, maxb=6,765KiB/s, mint=16160msec, maxt=16160msec

Disk stats (read/write):
  cciss!c0d0: ios=4540/3300, merge=825/59899, ticks=52348/1643384, in_queue=1696344, util=97.83%
4.93user 2.40system 0:16.49elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k
558448inputs+506304outputs (0major+2461minor)pagefaults 0swaps