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: [mFm] [33.3% done] [  5623/ 17290 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19248, got signal=6
Threads: 2: [_Fm] [40.0% done] [  1836/ 23649 kb/s] [eta 00m:06s]
Threads: 2: [_Fm] [50.0% done] [   886/  9570 kb/s] [eta 00m:05s]
Threads: 2: [_Fm] [54.5% done] [  1117/  5180 kb/s] [eta 00m:05s]
Threads: 2: [_Fm] [53.8% done] [  1186/     0 kb/s] [eta 00m:06s]
Threads: 2: [_FF] [100.0% done] [   772/ 24003 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] [70.6% done] [ 49314/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [86.7% done] [ 67659/     0 kb/s] [eta 00m:02s]
Threads: 1: [__V] [100.0% done] [ 63837/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=19248
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=43.6%, 2=49.8%, 4=0.9%, 8=5.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=91.3%, 4=1.9%, 10=0.3%, 20=0.4%, 50=0.3%, 100=1.6%
     lat (msec): 250=3.9%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19249
  read : io=100MiB, bw=7,833KiB/s, runt= 13385msec
    clat (msec): min=    0, max=  188, avg= 5.28, stdev=17.05
    bw (KiB/s) : min=    1, max=66437, per=274.50%, avg=41729.80, stdev=26514.94
  write: io=100MiB, bw=9,279KiB/s, runt= 11300msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.02
    clat (msec): min=    0, max=   16, avg= 0.05, stdev= 0.75
    bw (KiB/s) : min=    0, max=86851, per=195.70%, avg=49037.67, stdev=44500.15
  cpu          : usr=11.39%, sys=5.44%, ctx=10016
  IO depths    : 1=54.2%, 2=15.8%, 4=24.2%, 8=5.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=62.4%, 4=20.8%, 10=14.3%, 20=0.8%, 50=0.3%, 100=0.7%
     lat (msec): 250=0.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19250
  read : io=100MiB, bw=7,402KiB/s, runt= 14166msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  714, avg=39.43, stdev=91.37
    bw (KiB/s) : min=   46, max=53215, per=52.71%, avg=8012.68, stdev=13704.57
  write: io=78,648KiB, bw=7,091KiB/s, runt= 11356msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  331, avg= 2.66, stdev=20.69
    bw (KiB/s) : min=    0, max=14790, per=26.52%, avg=6644.00, stdev=6255.88
  cpu          : usr=11.32%, sys=6.07%, ctx=6220
  IO depths    : 1=12.0%, 2=47.4%, 4=25.1%, 8=15.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.5%, 4=13.6%, 10=20.1%, 20=2.9%, 50=2.7%, 100=2.6%
     lat (msec): 250=4.2%, 500=3.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=205MiB, aggrb=15,202KiB/s, minb=0KiB/s, maxb=7,833KiB/s, mint=13385msec, maxt=14166msec
  WRITE: io=271MiB, aggrb=25,057KiB/s, minb=0KiB/s, maxb=9,279KiB/s, mint=13385msec, maxt=14166msec

Disk stats (read/write):
  cciss!c0d0: ios=1784/3495, merge=22269/66043, ticks=127856/1463300, in_queue=1591164, util=94.91%
4.56user 1.97system 0:14.53elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k
467872inputs+555912outputs (0major+2445minor)pagefaults 0swaps