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] [50.0% done] [ 14061/     0 kb/s] [eta 00m:03s]
Threads: 3: [mmm] [57.1% done] [ 12231/ 23145 kb/s] [eta 00m:03s]
Threads: 3: [mFm] [55.6% done] [  9346/  2129 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23618, got signal=6
Threads: 2: [_Fm] [54.5% done] [  2482/     0 kb/s] [eta 00m:05s]
Threads: 2: [_Fm] [53.8% done] [  1072/     0 kb/s] [eta 00m:06s]
Threads: 2: [_FF] [100.0% done] [   300/ 20569 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [68.2% done] [  3149/     0 kb/s] [eta 00m:07s]
Threads: 2: [_VV] [88.9% done] [ 59804/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 63548/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=23618
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=70.0%, 4=7.3%, 8=22.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=53.4%, 4=16.2%, 10=2.4%, 20=2.6%, 50=10.6%, 100=11.0%
     lat (msec): 250=2.7%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23619
  read : io=100MiB, bw=5,947KiB/s, runt= 17622msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  235, avg=27.69, stdev=42.64
    bw (KiB/s) : min=    0, max=39324, per=102.49%, avg=13151.23, stdev=14419.84
  write: io=79,140KiB, bw=5,409KiB/s, runt= 14980msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   73, avg= 1.13, stdev= 4.63
    bw (KiB/s) : min=    0, max=59998, per=147.95%, avg=24124.33, stdev=31677.68
  cpu          : usr=9.85%, sys=4.47%, ctx=6643
  IO depths    : 1=4.4%, 2=51.9%, 4=26.1%, 8=17.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.5%, 4=17.4%, 10=20.3%, 20=4.7%, 50=3.8%, 100=5.4%
     lat (msec): 250=6.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23620
  read : io=100MiB, bw=5,964KiB/s, runt= 17578msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  695, avg=39.07, stdev=76.34
    bw (KiB/s) : min=    2, max=30531, per=74.62%, avg=9574.94, stdev=11293.86
  write: io=73,176KiB, bw=5,002KiB/s, runt= 14980msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  147, avg= 1.05, stdev= 8.59
    bw (KiB/s) : min=    0, max=61784, per=133.65%, avg=21792.33, stdev=34680.36
  cpu          : usr=8.53%, sys=4.37%, ctx=7615
  IO depths    : 1=17.7%, 2=37.1%, 4=25.2%, 8=19.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.0%, 4=11.2%, 10=16.2%, 20=4.9%, 50=4.5%, 100=7.3%
     lat (msec): 250=6.0%, 500=1.5%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=12,832KiB/s, minb=0KiB/s, maxb=5,964KiB/s, mint=17578msec, maxt=17622msec
  WRITE: io=233MiB, aggrb=16,306KiB/s, minb=0KiB/s, maxb=5,409KiB/s, mint=17578msec, maxt=17622msec

Disk stats (read/write):
  cciss!c0d0: ios=3240/3315, merge=26775/56280, ticks=204616/1529736, in_queue=1734352, util=97.80%
4.80user 1.97system 0:17.95elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k
549896inputs+477128outputs (0major+2445minor)pagefaults 0swaps