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: [mmF] [50.0% done] [  4664/     0 kb/s] [eta 00m:03s]
Threads: 3: [mmF] [50.0% done] [  3701/ 18923 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [62.5% done] [   800/ 31215 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30145, got signal=6
Threads: 2: [_FF] [100.0% done] [   674/  7115 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: [_FV] [100.0% done] [ 44018/     0 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [ 59875/     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] [ 65100/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=30145
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=84.1%, 4=4.5%, 8=11.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=71.7%, 4=12.0%, 10=1.9%, 20=0.3%, 50=0.7%, 100=3.9%
     lat (msec): 250=6.8%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30146
  read : io=100MiB, bw=7,217KiB/s, runt= 14529msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  299, avg=15.67, stdev=44.86
    bw (KiB/s) : min=    1, max=69074, per=104.23%, avg=16174.10, stdev=27341.72
  write: io=88,840KiB, bw=6,927KiB/s, runt= 13132msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  184, avg= 1.06, stdev= 7.80
    bw (KiB/s) : min=    0, max=60899, per=121.59%, avg=26376.00, stdev=31438.74
  cpu          : usr=13.02%, sys=5.20%, ctx=6245
  IO depths    : 1=14.3%, 2=49.9%, 4=24.8%, 8=11.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=54.6%, 4=21.8%, 10=16.3%, 20=1.3%, 50=1.7%, 100=1.5%
     lat (msec): 250=2.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30147
  read : io=100MiB, bw=8,719KiB/s, runt= 12026msec
    clat (msec): min=    0, max=   77, avg= 3.51, stdev= 7.38
    bw (KiB/s) : min=    5, max=71319, per=323.41%, avg=50183.75, stdev=33906.34
  write: io=100MiB, bw=10,129KiB/s, runt= 10352msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    6, avg= 0.83, stdev= 1.15
    bw (KiB/s) : min=    0, max=68370, per=219.27%, avg=47567.00, stdev=31903.85
  cpu          : usr=17.30%, sys=6.39%, ctx=6133
  IO depths    : 1=19.3%, 2=49.9%, 4=25.3%, 8=5.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=53.7%, 4=29.0%, 10=15.7%, 20=0.6%, 50=0.4%, 100=0.6%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=215MiB, aggrb=15,517KiB/s, minb=0KiB/s, maxb=8,719KiB/s, mint=12026msec, maxt=14529msec
  WRITE: io=272MiB, aggrb=21,693KiB/s, minb=0KiB/s, maxb=10,129KiB/s, mint=12026msec, maxt=14529msec

Disk stats (read/write):
  cciss!c0d0: ios=1828/3505, merge=6459/65947, ticks=97920/1608580, in_queue=1706832, util=94.08%
5.41user 1.92system 0:14.83elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k
470840inputs+556424outputs (0major+2446minor)pagefaults 0swaps