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=6314, got signal=6
Threads: 2: [_mm] [20.0% done] [  5632/ 29606 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [21.1% done] [  5408/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6315, got signal=6
Threads: 1: [__m] [26.3% done] [  3351/  5149 kb/s] [eta 00m:14s]
Threads: 1: [__m] [30.0% done] [  1495/  6180 kb/s] [eta 00m:14s]
Threads: 1: [__m] [53.8% done] [   463/ 36404 kb/s] [eta 00m:06s]
Threads: 1: [__m] [57.1% done] [  1003/     0 kb/s] [eta 00m:06s]
Threads: 1: [__F] [100.0% done] [   467/ 18903 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] [100.0% done] [ 51748/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=6314
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=89.5%, 4=5.0%, 8=5.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.1%, 4=8.5%, 10=1.2%, 20=0.2%, 50=0.5%, 100=3.2%
     lat (msec): 250=2.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6315
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=80.5%, 2=0.5%, 4=4.3%, 8=14.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=80.3%, 4=0.1%, 10=0.3%, 20=2.5%, 50=6.7%, 100=6.4%
     lat (msec): 250=1.9%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6316
  read : io=100MiB, bw=6,791KiB/s, runt= 15435msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  550, avg=38.41, stdev=88.04
    bw (KiB/s) : min=    3, max=54673, per=119.99%, avg=10055.33, stdev=16758.40
  write: io=65,592KiB, bw=4,754KiB/s, runt= 14128msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  418, avg= 3.60, stdev=26.91
    bw (KiB/s) : min=    0, max=61169, per=99.08%, avg=17696.00, stdev=29085.12
  cpu          : usr=8.99%, sys=4.22%, ctx=5757
  IO depths    : 1=1.5%, 2=54.3%, 4=25.2%, 8=19.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.2%, 4=13.4%, 10=22.0%, 20=5.0%, 50=1.9%, 100=5.2%
     lat (msec): 250=2.3%, 500=3.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=123MiB, aggrb=8,380KiB/s, minb=0KiB/s, maxb=6,791KiB/s, mint=15435msec, maxt=15435msec
  WRITE: io=241MiB, aggrb=17,860KiB/s, minb=0KiB/s, maxb=4,754KiB/s, mint=15435msec, maxt=15435msec

Disk stats (read/write):
  cciss!c0d0: ios=1450/3859, merge=6256/57677, ticks=41004/1740592, in_queue=1781600, util=97.57%
3.83user 1.30system 0:15.76elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
326128inputs+492888outputs (0major+2461minor)pagefaults 0swaps