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] [13.6% done] [ 14744/  7101 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 10941/  8680 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 12902/  7028 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14659/  4323 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  7825/  9867 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 18787/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 10258/  5076 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 11344/  5190 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9965/  4535 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 11824/  2192 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7618/  6117 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  5613/  7276 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6442/  3969 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5153/  5295 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5714/  3807 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  4730/  5206 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  9221/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  5849/  2216 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15267, got signal=6
Threads: 2: [m_m] [65.6% done] [  5576/  1358 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15266, got signal=6
Threads: 1: [__V] [75.9% done] [ 15554/   606 kb/s] [eta 00m:07s]
fio: (groupid=0): err= 0: pid=15266
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=8.2%, 100=46.6%
     lat (msec): 250=44.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15267
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.3%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.0%, 50=6.1%, 100=48.8%
     lat (msec): 250=42.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15268
  read : io=100MiB, bw=4,517KiB/s, runt= 23115msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  391, avg=74.19, stdev=46.34
    bw (KiB/s) : min=   15, max=26766, per=50.06%, avg=5108.77, stdev=5007.54
  write: io=30,572KiB, bw=1,455KiB/s, runt= 21515msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   12, max=  519, avg=112.37, stdev=50.37
    bw (KiB/s) : min=    0, max= 7266, per=48.08%, avg=2443.68, stdev=2337.68
  cpu          : usr=0.33%, sys=0.21%, ctx=7852
  IO depths    : 1=0.1%, 2=0.6%, 4=14.2%, 8=85.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.7%, 10=4.2%, 20=7.9%, 50=13.6%, 100=38.6%
     lat (msec): 250=34.0%, 500=0.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=225MiB, aggrb=10,205KiB/s, minb=0KiB/s, maxb=4,517KiB/s, mint=23115msec, maxt=23115msec
  WRITE: io=104MiB, aggrb=5,083KiB/s, minb=0KiB/s, maxb=1,455KiB/s, mint=23115msec, maxt=23115msec

Disk stats (read/write):
  cciss!c0d0: ios=4534/2285, merge=450/216, ticks=49288/36140, in_queue=85432, util=99.10%
0.21user 0.30system 0:23.47elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
461000inputs+213712outputs (0major+2448minor)pagefaults 0swaps