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: [FmF] [60.0% done] [  1987/ 76589 kb/s] [eta 00m:02s]
Threads: 3: [FmF] [57.1% done] [  1065/     0 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [62.5% done] [   800/  8748 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [66.7% done] [   903/  2418 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [70.0% done] [  3009/     0 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6198, got signal=6
Threads: 2: [F_F] [100.0% done] [  2123/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6197, got signal=6

fio: (groupid=0): err= 0: pid=6197
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=88.2%, 4=2.8%, 8=8.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.8%, 4=8.7%, 10=2.2%, 20=0.3%, 50=1.0%, 100=6.4%
     lat (msec): 250=2.0%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6198
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=75.4%, 4=5.9%, 8=18.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=56.1%, 4=18.7%, 10=1.8%, 20=2.2%, 50=4.6%, 100=5.5%
     lat (msec): 250=6.4%, 500=4.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6199
  read : io=0KiB, bw=0KiB/s, runt= 10524msec
  write: io=100MiB, bw=10,025KiB/s, runt= 10459msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    3, avg= 0.00, stdev= 0.11
    bw (KiB/s) : min=    0, max=59257, per=161.96%, avg=43712.50, stdev=29151.45
  cpu          : usr=12.47%, sys=5.13%, ctx=9528
  IO depths    : 1=99.6%, 2=0.3%, 4=0.1%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.5%, 4=0.1%, 10=0.0%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=31,432KiB, aggrb=3,058KiB/s, minb=0KiB/s, maxb=0KiB/s, mint=10524msec, maxt=10524msec
  WRITE: io=269MiB, aggrb=26,990KiB/s, minb=0KiB/s, maxb=10,025KiB/s, mint=10524msec, maxt=10524msec

Disk stats (read/write):
  cciss!c0d0: ios=861/3156, merge=116/65744, ticks=11956/1362836, in_queue=1374800, util=92.32%
4.09user 1.43system 0:11.76elapsed 47%CPU (0avgtext+0avgdata 0maxresident)k
87168inputs+551400outputs (0major+2452minor)pagefaults 0swaps