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] [ 17490/ 19609 kb/s] [eta 00m:19s]
Threads: 3: [Fmm] [20.0% done] [ 13398/ 51153 kb/s] [eta 00m:16s]
Threads: 3: [Fmm] [22.7% done] [  5194/ 25320 kb/s] [eta 00m:17s]
Threads: 3: [Fmm] [25.0% done] [  5003/ 25137 kb/s] [eta 00m:18s]
Threads: 3: [FmF] [25.9% done] [  3343/     0 kb/s] [eta 00m:20s]
Threads: 3: [FmF] [27.6% done] [  3018/     0 kb/s] [eta 00m:21s]
Threads: 3: [FmF] [30.0% done] [  3254/     0 kb/s] [eta 00m:21s]
Threads: 3: [FmF] [32.3% done] [  3197/     0 kb/s] [eta 00m:21s]
Threads: 3: [FmF] [34.4% done] [  2753/     0 kb/s] [eta 00m:21s]
Threads: 3: [VmV] [37.5% done] [ 13481/     0 kb/s] [eta 00m:20s]
Threads: 3: [VmV] [38.2% done] [ 56876/     0 kb/s] [eta 00m:21s]
Threads: 3: [VmV] [38.9% done] [ 59259/     0 kb/s] [eta 00m:22s]
Threads: 1: [_m_] [40.5% done] [ 49269/     0 kb/s] [eta 00m:22s]
Threads: 1: [_m_] [64.0% done] [  7996/ 28639 kb/s] [eta 00m:09s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4041, got signal=6

fio: (groupid=0): err= 0: pid=4040
  read : io=100MiB, bw=7,018KiB/s, runt= 14940msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  278, avg=19.80, stdev=45.24
    bw (KiB/s) : min=    5, max=37356, per=76.94%, avg=14562.36, stdev=14270.80
  write: io=93,096KiB, bw=8,057KiB/s, runt= 11831msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  231, avg= 2.18, stdev=14.36
    bw (KiB/s) : min=    0, max=62160, per=148.62%, avg=24991.25, stdev=26357.14
  cpu          : usr=13.31%, sys=5.17%, ctx=5976
  IO depths    : 1=1.4%, 2=63.1%, 4=26.0%, 8=9.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.7%, 4=18.6%, 10=21.2%, 20=3.7%, 50=1.1%, 100=1.0%
     lat (msec): 250=5.2%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4041
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=39.0%, 4=20.1%, 8=40.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=35.4%, 4=2.8%, 10=3.2%, 20=12.7%, 50=10.2%, 100=6.6%
     lat (msec): 250=19.4%, 500=8.1%, 750=1.0%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4042
  read : io=100MiB, bw=6,939KiB/s, runt= 15078msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  321, avg=36.50, stdev=59.09
    bw (KiB/s) : min=    1, max=31023, per=54.57%, avg=10329.18, stdev=9615.23
  write: io=72,992KiB, bw=6,317KiB/s, runt= 11831msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  107, avg= 1.10, stdev= 5.87
    bw (KiB/s) : min=    0, max=26238, per=100.50%, avg=16899.00, stdev=14661.97
  cpu          : usr=9.87%, sys=4.96%, ctx=7970
  IO depths    : 1=22.6%, 2=33.1%, 4=26.9%, 8=17.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.5%, 4=12.4%, 10=21.9%, 20=6.5%, 50=2.1%, 100=2.8%
     lat (msec): 250=10.1%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=272MiB, aggrb=18,928KiB/s, minb=0KiB/s, maxb=7,018KiB/s, mint=15078msec, maxt=15078msec
  WRITE: io=190MiB, aggrb=16,815KiB/s, minb=0KiB/s, maxb=8,057KiB/s, mint=15078msec, maxt=15078msec

Disk stats (read/write):
  cciss!c0d0: ios=5610/2108, merge=1129/41401, ticks=68640/1154000, in_queue=1234524, util=96.30%
4.21user 1.92system 0:16.91elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k
679760inputs+388584outputs (0major+2441minor)pagefaults 0swaps