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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmF] [30.0% done] [ 18149/ 64104 kb/s] [eta 00m:07s]
fio: pid=3564, got signal=6
Threads: 2: [mm_] [36.4% done] [ 16839/ 27843 kb/s] [eta 00m:07s]
Threads: 2: [mF_] [55.6% done] [  1174/ 48030 kb/s] [eta 00m:04s]
Threads: 2: [mF_] [60.0% done] [   788/     0 kb/s] [eta 00m:04s]
Threads: 2: [mF_] [58.3% done] [  1251/     0 kb/s] [eta 00m:05s]
Threads: 2: [mF_] [57.1% done] [  1336/     0 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [60.0% done] [  1210/     0 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [58.8% done] [   824/     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=3562, got signal=6
Threads: 1: [_F_] [100.0% done] [   516/ 12267 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [93.8% done] [ 34145/     0 kb/s] [eta 00m:01s]
fio: (groupid=0): err= 0: pid=3562
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=63.9%, 4=4.0%, 8=31.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.9%, 4=8.8%, 10=2.8%, 20=0.4%, 50=5.5%, 100=12.3%
     lat (msec): 250=9.9%, 500=7.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3563
  read : io=100MiB, bw=6,613KiB/s, runt= 15853msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  135, avg=17.17, stdev=30.00
    bw (KiB/s) : min=    7, max=58898, per=168.45%, avg=17166.60, stdev=22041.58
  write: io=74,652KiB, bw=5,285KiB/s, runt= 14464msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   57, avg= 0.62, stdev= 2.76
    bw (KiB/s) : min=    0, max=61095, per=145.51%, avg=23075.00, stdev=33176.26
  cpu          : usr=9.92%, sys=4.57%, ctx=6133
  IO depths    : 1=7.7%, 2=51.8%, 4=24.6%, 8=15.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=18.5%, 10=19.4%, 20=3.3%, 50=2.0%, 100=6.3%
     lat (msec): 250=2.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3564
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=87.0%, 4=4.7%, 8=8.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=75.9%, 4=13.8%, 10=1.1%, 20=0.1%, 50=0.8%, 100=4.3%
     lat (msec): 250=3.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=154MiB, aggrb=10,191KiB/s, minb=0KiB/s, maxb=6,613KiB/s, mint=0msec, maxt=15853msec
  WRITE: io=219MiB, aggrb=15,858KiB/s, minb=0KiB/s, maxb=5,285KiB/s, mint=0msec, maxt=15853msec

Disk stats (read/write):
  cciss!c0d0: ios=1918/3447, merge=20369/52332, ticks=58272/1428472, in_queue=1488520, util=95.03%
4.15user 1.44system 0:16.20elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
369520inputs+448144outputs (0major+2462minor)pagefaults 0swaps