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] [11.1% done] [  8269/ 11930 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [14.8% done] [  1609/ 14583 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [19.2% done] [ 10547/  8647 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [24.0% done] [ 13738/  5233 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.9% done] [  7630/  9896 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [32.0% done] [ 14891/  2180 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 15440/  2375 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 11259/  6334 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 14468/  2517 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 13689/   528 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 10937/  4209 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  7512/  5031 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  9334/  2428 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 11795/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8549/  2607 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  6853/  2237 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7724/  1374 kb/s] [eta 00m:11s]
Threads: 3: [Vmm] [62.5% done] [  4774/  2251 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9332, got signal=6
Threads: 2: [Vm_] [63.6% done] [ 18848/   475 kb/s] [eta 00m:12s]
Threads: 1: [_m_] [64.7% done] [ 16144/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9331, got signal=6

fio: (groupid=0): err= 0: pid=9330
  read : io=100MiB, bw=4,762KiB/s, runt= 21924msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    3, max=  284, avg=74.95, stdev=43.89
    bw (KiB/s) : min=  365, max=20221, per=46.53%, avg=5353.50, stdev=4203.07
  write: io=32,424KiB, bw=1,661KiB/s, runt= 19983msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   23, max=  306, avg=109.13, stdev=42.94
    bw (KiB/s) : min=    0, max= 7287, per=69.02%, avg=3279.88, stdev=2712.98
  cpu          : usr=0.26%, sys=0.40%, ctx=7604
  IO depths    : 1=0.1%, 2=0.3%, 4=12.5%, 8=87.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=1.7%, 20=5.9%, 50=18.4%, 100=41.2%
     lat (msec): 250=31.3%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9331
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.5%, 50=11.7%, 100=36.5%
     lat (msec): 250=45.5%, 500=1.4%, 750=0.6%, 1000=0.9%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=9332
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.9%, 50=8.2%, 100=38.8%
     lat (msec): 250=49.6%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=241MiB, aggrb=11,505KiB/s, minb=0KiB/s, maxb=4,762KiB/s, mint=0msec, maxt=21924msec
  WRITE: io=92,740KiB, aggrb=4,752KiB/s, minb=0KiB/s, maxb=1,661KiB/s, mint=0msec, maxt=21924msec

Disk stats (read/write):
  cciss!c0d0: ios=4734/1918, merge=717/96, ticks=54908/41096, in_queue=96004, util=98.08%
0.18user 0.40system 0:23.49elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
492920inputs+185520outputs (0major+2441minor)pagefaults 0swaps