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] [42.9% done] [  5714/108757 kb/s] [eta 00m:04s]
Threads: 3: [mmF] [50.0% done] [  2485/ 30067 kb/s] [eta 00m:04s]
Threads: 3: [mmF] [62.5% done] [  2767/ 11410 kb/s] [eta 00m:03s]
Threads: 3: [mFF] [60.0% done] [  1395/ 13398 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15740, got signal=6
Threads: 2: [_FF] [100.0% done] [   337/ 14736 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: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [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=15742, got signal=6
Threads: 1: [_V_] [100.0% done] [ 48956/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15740
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=86.6%, 4=2.5%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=69.7%, 4=16.2%, 10=1.4%, 20=0.2%, 50=0.5%, 100=0.9%
     lat (msec): 250=7.0%, 500=3.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15741
  read : io=100MiB, bw=7,590KiB/s, runt= 13813msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  367, avg=21.20, stdev=52.82
    bw (KiB/s) : min=   29, max=63209, per=141.69%, avg=13175.58, stdev=23025.03
  write: io=85,084KiB, bw=7,102KiB/s, runt= 12267msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  339, avg= 4.69, stdev=20.92
    bw (KiB/s) : min=    0, max=43747, per=91.99%, avg=20487.00, stdev=15756.74
  cpu          : usr=11.32%, sys=5.94%, ctx=4945
  IO depths    : 1=4.1%, 2=45.8%, 4=36.0%, 8=14.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=26.9%, 4=24.0%, 10=38.5%, 20=3.4%, 50=1.0%, 100=1.0%
     lat (msec): 250=4.3%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15742
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=84.8%, 4=8.7%, 8=6.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.8%, 4=6.0%, 10=1.8%, 20=0.1%, 50=0.4%, 100=1.2%
     lat (msec): 250=4.1%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=123MiB, aggrb=9,299KiB/s, minb=0KiB/s, maxb=7,590KiB/s, mint=0msec, maxt=13813msec
  WRITE: io=261MiB, aggrb=22,270KiB/s, minb=0KiB/s, maxb=7,102KiB/s, mint=0msec, maxt=13813msec

Disk stats (read/write):
  cciss!c0d0: ios=2620/3305, merge=512/63327, ticks=25424/1557932, in_queue=1584336, util=94.88%
4.07user 1.74system 0:14.16elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
319960inputs+533680outputs (0major+2464minor)pagefaults 0swaps