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] [9.7% done] [ 12666/  6308 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [12.5% done] [ 12210/  5609 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [16.7% done] [  9829/  6899 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [20.0% done] [ 12007/  3941 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [23.3% done] [  8863/  6080 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [25.0% done] [ 14136/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [29.0% done] [ 11702/  8415 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [32.3% done] [ 13096/  3949 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [35.5% done] [ 10896/  4974 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [38.7% done] [ 13296/  4689 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [41.9% done] [  7830/  6700 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [45.2% done] [ 10909/  3921 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [48.4% done] [  9268/  3701 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [51.6% done] [  9570/  1952 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [53.1% done] [  6532/  4181 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [56.2% done] [  6127/  3815 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [57.6% done] [  8362/   719 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9693, got signal=6
Threads: 2: [mm_] [58.8% done] [  5808/  3107 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9692, got signal=6
Threads: 1: [m__] [63.6% done] [  2106/  4815 kb/s] [eta 00m:12s]
Threads: 1: [m__] [66.7% done] [  1724/  5080 kb/s] [eta 00m:11s]
Threads: 1: [V__] [88.5% done] [ 32613/     0 kb/s] [eta 00m:03s]
fio: (groupid=0): err= 0: pid=9691
  read : io=100MiB, bw=4,429KiB/s, runt= 23603msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  510, avg=62.07, stdev=86.01
    bw (KiB/s) : min=   33, max=41883, per=53.31%, avg=5642.70, stdev=9294.24
  write: io=49,476KiB, bw=2,292KiB/s, runt= 22095msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   20, max=  383, avg=88.59, stdev=62.19
    bw (KiB/s) : min=    0, max= 7247, per=58.26%, avg=3029.73, stdev=2327.75
  cpu          : usr=1.14%, sys=0.58%, ctx=8296
  IO depths    : 1=0.2%, 2=4.2%, 4=25.7%, 8=69.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=4.0%, 10=17.1%, 20=10.6%, 50=20.5%, 100=20.7%
     lat (msec): 250=18.5%, 500=7.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9692
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.6%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.3%, 50=20.6%, 100=46.0%
     lat (msec): 250=20.4%, 500=10.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9693
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.9%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=15.6%, 100=61.8%
     lat (msec): 250=9.7%, 500=11.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=238MiB, aggrb=10,585KiB/s, minb=0KiB/s, maxb=4,429KiB/s, mint=0msec, maxt=23603msec
  WRITE: io=110MiB, aggrb=5,200KiB/s, minb=0KiB/s, maxb=2,292KiB/s, mint=0msec, maxt=23603msec

Disk stats (read/write):
  cciss!c0d0: ios=4473/1986, merge=702/305, ticks=47088/31212, in_queue=78296, util=97.51%
0.71user 0.60system 0:24.22elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k
488328inputs+224448outputs (0major+2453minor)pagefaults 0swaps