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] [12.0% done] [ 11954/  6495 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 13300/  6552 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [  9875/  9733 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  9208/ 11352 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  9965/  8545 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 10002/  6573 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  8737/  8712 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  9062/  5796 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  8928/  7362 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [ 14130/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 10225/  3107 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8684/  4388 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  5141/  6878 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  5857/  4876 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  7496/  2696 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  9428/     0 kb/s] [eta 00m:13s]
Threads: 3: [Vmm] [59.4% done] [ 20768/   308 kb/s] [eta 00m:13s]
Threads: 3: [Vmm] [58.8% done] [ 23298/   231 kb/s] [eta 00m:14s]
Threads: 2: [_mm] [61.8% done] [  3701/  4608 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31643, got signal=6
Threads: 1: [__m] [62.9% done] [  5702/  1183 kb/s] [eta 00m:13s]
Threads: 1: [__m] [67.6% done] [  3534/  2936 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31644, got signal=6

fio: (groupid=0): err= 0: pid=31642
  read : io=99MiB, bw=5,133KiB/s, runt= 20311msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  171, avg=60.28, stdev=37.14
    bw (KiB/s) : min=  143, max=29027, per=53.32%, avg=6023.67, stdev=6291.37
  write: io=42,320KiB, bw=2,353KiB/s, runt= 18415msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   14, max=  238, avg=101.78, stdev=29.94
    bw (KiB/s) : min=    0, max= 9413, per=51.53%, avg=3575.33, stdev=2936.50
  cpu          : usr=0.51%, sys=0.51%, ctx=7220
  IO depths    : 1=0.1%, 2=0.8%, 4=16.3%, 8=82.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.7%, 10=4.2%, 20=7.7%, 50=19.0%, 100=44.2%
     lat (msec): 250=23.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31643
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.7%, 50=9.1%, 100=45.2%
     lat (msec): 250=40.9%, 500=1.1%, 750=0.6%, 1000=0.6%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31644
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=16.8%, 100=25.9%
     lat (msec): 250=53.1%, 500=1.5%, 750=0.5%, 1000=0.3%, >=2000=0.4%

Run status group 0 (all jobs):
   READ: io=219MiB, aggrb=11,298KiB/s, minb=0KiB/s, maxb=5,133KiB/s, mint=0msec, maxt=20311msec
  WRITE: io=122MiB, aggrb=6,938KiB/s, minb=0KiB/s, maxb=2,353KiB/s, mint=0msec, maxt=20311msec

Disk stats (read/write):
  cciss!c0d0: ios=4380/2489, merge=643/247, ticks=46720/45016, in_queue=91720, util=99.20%
0.21user 0.60system 0:23.87elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
448688inputs+249592outputs (0major+2450minor)pagefaults 0swaps