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] [33.3% done] [ 17917/ 51755 kb/s] [eta 00m:06s]
Threads: 3: [mmF] [36.4% done] [ 13662/ 38820 kb/s] [eta 00m:07s]
Threads: 3: [mmF] [38.5% done] [  5100/     0 kb/s] [eta 00m:08s]
Threads: 3: [mmF] [50.0% done] [  3486/ 15961 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7528, got signal=6
Threads: 2: [_mF] [53.8% done] [  2355/ 28737 kb/s] [eta 00m:06s]
Threads: 2: [_mF] [53.3% done] [  1596/     0 kb/s] [eta 00m:07s]
Threads: 2: [_mF] [60.0% done] [  1332/  8378 kb/s] [eta 00m:06s]
Threads: 2: [_FF] [100.0% done] [     0/ 14114 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] [73.7% done] [ 31341/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [93.8% done] [ 55643/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 60475/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=7528
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=77.9%, 4=4.2%, 8=17.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=63.2%, 4=14.8%, 10=1.3%, 20=0.7%, 50=0.8%, 100=7.9%
     lat (msec): 250=9.8%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7529
  read : io=100MiB, bw=6,451KiB/s, runt= 16252msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  339, avg=49.30, stdev=73.07
    bw (KiB/s) : min=   41, max=30928, per=61.53%, avg=8823.30, stdev=9402.04
  write: io=62,228KiB, bw=4,737KiB/s, runt= 13451msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  230, avg= 2.52, stdev=17.21
    bw (KiB/s) : min=    0, max= 6604, per=22.76%, avg=3968.67, stdev=3498.08
  cpu          : usr=8.02%, sys=4.90%, ctx=6417
  IO depths    : 1=0.9%, 2=49.8%, 4=27.6%, 8=21.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=39.3%, 4=13.5%, 10=21.0%, 20=4.4%, 50=1.9%, 100=6.7%
     lat (msec): 250=11.0%, 500=2.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7530
  read : io=100MiB, bw=6,450KiB/s, runt= 16256msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  224, avg=20.30, stdev=39.22
    bw (KiB/s) : min=    7, max=39649, per=124.69%, avg=17879.91, stdev=15330.18
  write: io=87,288KiB, bw=6,645KiB/s, runt= 13451msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  130, avg= 1.27, stdev= 6.72
    bw (KiB/s) : min=    0, max=69705, per=203.24%, avg=35438.50, stdev=34774.47
  cpu          : usr=11.25%, sys=5.34%, ctx=6175
  IO depths    : 1=1.3%, 2=60.6%, 4=26.9%, 8=11.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.3%, 4=19.9%, 10=21.2%, 20=3.3%, 50=0.8%, 100=2.6%
     lat (msec): 250=5.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=222MiB, aggrb=14,339KiB/s, minb=0KiB/s, maxb=6,451KiB/s, mint=16252msec, maxt=16256msec
  WRITE: io=224MiB, aggrb=17,437KiB/s, minb=0KiB/s, maxb=6,645KiB/s, mint=16252msec, maxt=16256msec

Disk stats (read/write):
  cciss!c0d0: ios=4774/3106, merge=1192/54040, ticks=44928/1356656, in_queue=1401852, util=98.32%
4.54user 2.19system 0:16.57elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
581224inputs+458176outputs (0major+2450minor)pagefaults 0swaps