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] [20.0% done] [ 12349/ 23571 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [22.2% done] [  6365/ 44409 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [25.0% done] [  5161/ 42314 kb/s] [eta 00m:15s]
Threads: 3: [Fmm] [31.6% done] [  5875/ 14258 kb/s] [eta 00m:13s]
Threads: 3: [FmF] [63.6% done] [   309/ 47443 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [61.5% done] [   768/     0 kb/s] [eta 00m:05s]
Threads: 3: [FmF] [64.3% done] [  1199/     0 kb/s] [eta 00m:05s]
Threads: 3: [FmF] [62.5% done] [  1293/     0 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [64.7% done] [   931/     0 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [63.2% done] [  1265/     0 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [65.0% done] [  1228/     0 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [66.7% done] [  2005/     0 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28539, got signal=6
Threads: 2: [F_F] [100.0% done] [  3498/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [80.0% done] [ 38653/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [100.0% done] [ 60650/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 60951/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=28538
  read : io=100MiB, bw=5,791KiB/s, runt= 18075msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  427, avg=29.42, stdev=58.26
    bw (KiB/s) : min=    9, max=39152, per=82.96%, avg=11176.40, stdev=14166.95
  write: io=83,036KiB, bw=5,496KiB/s, runt= 15471msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  297, avg= 1.99, stdev=14.79
    bw (KiB/s) : min=    0, max=59588, per=144.02%, avg=22742.50, stdev=26150.76
  cpu          : usr=9.65%, sys=4.16%, ctx=8966
  IO depths    : 1=25.9%, 2=31.8%, 4=27.8%, 8=14.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.7%, 4=14.8%, 10=22.3%, 20=5.4%, 50=3.6%, 100=2.5%
     lat (msec): 250=6.5%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28539
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=6.2%, 2=50.8%, 4=12.1%, 8=30.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.1%, 4=7.8%, 10=1.5%, 20=3.6%, 50=4.6%, 100=5.9%
     lat (msec): 250=19.0%, 500=7.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28540
  read : io=100MiB, bw=5,698KiB/s, runt= 18401msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  719, avg=29.81, stdev=73.97
    bw (KiB/s) : min=   21, max=42037, per=87.85%, avg=11834.93, stdev=15043.43
  write: io=90,772KiB, bw=6,020KiB/s, runt= 15439msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  287, avg= 2.75, stdev=20.16
    bw (KiB/s) : min=    0, max=61350, per=175.50%, avg=27713.40, stdev=30519.03
  cpu          : usr=10.63%, sys=4.72%, ctx=6715
  IO depths    : 1=1.6%, 2=61.2%, 4=25.9%, 8=11.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.0%, 4=19.5%, 10=21.8%, 20=2.2%, 50=0.7%, 100=1.1%
     lat (msec): 250=6.4%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=236MiB, aggrb=13,472KiB/s, minb=0KiB/s, maxb=5,791KiB/s, mint=18401msec, maxt=18401msec
  WRITE: io=233MiB, aggrb=15,791KiB/s, minb=0KiB/s, maxb=6,020KiB/s, mint=18401msec, maxt=18401msec

Disk stats (read/write):
  cciss!c0d0: ios=4942/3355, merge=937/56171, ticks=56488/1861348, in_queue=1919072, util=96.77%
4.86user 2.08system 0:18.75elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k
577312inputs+477208outputs (0major+2460minor)pagefaults 0swaps