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] [15.0% done] [ 15895/ 35359 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 15143/ 28126 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [Fmm] [50.0% done] [  9943/ 61468 kb/s] [eta 00m:05s]
fio: pid=26175, got signal=6
Threads: 2: [_mm] [54.5% done] [  3782/ 20264 kb/s] [eta 00m:05s]
Threads: 2: [_mF] [63.6% done] [  1877/ 22182 kb/s] [eta 00m:04s]
Threads: 2: [_FF] [100.0% done] [     0/ 10884 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] [71.4% done] [ 13992/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [88.9% done] [ 51512/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 49737/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=26175
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=3.8%, 2=69.8%, 4=11.6%, 8=14.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=54.6%, 4=17.1%, 10=10.8%, 20=1.7%, 50=1.2%, 100=7.6%
     lat (msec): 250=6.6%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26176
  read : io=100MiB, bw=5,987KiB/s, runt= 17512msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  311, avg=39.65, stdev=63.47
    bw (KiB/s) : min=   21, max=37010, per=83.61%, avg=10599.00, stdev=11051.67
  write: io=67,656KiB, bw=4,715KiB/s, runt= 14691msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  219, avg= 2.05, stdev=11.52
    bw (KiB/s) : min=    0, max=15714, per=56.54%, avg=8923.67, stdev=8071.29
  cpu          : usr=8.18%, sys=4.29%, ctx=6631
  IO depths    : 1=1.2%, 2=52.0%, 4=29.0%, 8=17.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=40.4%, 4=14.0%, 10=23.8%, 20=5.2%, 50=1.9%, 100=3.2%
     lat (msec): 250=10.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26177
  read : io=100MiB, bw=5,908KiB/s, runt= 17732msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  346, avg=36.54, stdev=57.22
    bw (KiB/s) : min=    1, max=37272, per=84.34%, avg=10690.53, stdev=10255.13
  write: io=71,380KiB, bw=4,972KiB/s, runt= 14699msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  183, avg= 2.03, stdev=11.42
    bw (KiB/s) : min=    0, max=21304, per=69.63%, avg=10989.00, stdev=10667.98
  cpu          : usr=8.48%, sys=4.20%, ctx=6695
  IO depths    : 1=1.1%, 2=54.4%, 4=27.2%, 8=17.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.5%, 4=13.8%, 10=22.9%, 20=4.9%, 50=1.7%, 100=4.8%
     lat (msec): 250=9.8%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=214MiB, aggrb=12,676KiB/s, minb=0KiB/s, maxb=5,987KiB/s, mint=17512msec, maxt=17732msec
  WRITE: io=221MiB, aggrb=15,783KiB/s, minb=0KiB/s, maxb=4,972KiB/s, mint=17512msec, maxt=17732msec

Disk stats (read/write):
  cciss!c0d0: ios=4826/3354, merge=895/53362, ticks=46496/1403120, in_queue=1449832, util=97.30%
4.40user 1.92system 0:18.03elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k
588216inputs+453248outputs (0major+2454minor)pagefaults 0swaps