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] [  8248/ 13146 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [  8257/  9029 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 13227/  7179 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 11661/  7516 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  8582/  8781 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  7574/  8439 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 15005/  3009 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 12678/  2755 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  6089/  8476 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  8317/  5855 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  6739/  6316 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6760/  5954 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  7187/  4433 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  9961/  1708 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [ 10364/   882 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7370/  2273 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  5897/  3835 kb/s] [eta 00m:11s]
Threads: 3: [Vmm] [62.5% done] [  9123/  1183 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [Vmm] [63.6% done] [ 17815/   638 kb/s] [eta 00m:12s]
fio: pid=30415, got signal=6
Threads: 2: [Vm_] [64.7% done] [ 19121/     0 kb/s] [eta 00m:12s]
Threads: 1: [_m_] [67.6% done] [  7817/  2029 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30414, got signal=6

fio: (groupid=0): err= 0: pid=30413
  read : io=100MiB, bw=4,646KiB/s, runt= 22479msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  247, avg=69.81, stdev=47.75
    bw (KiB/s) : min=  219, max=24624, per=50.45%, avg=5349.43, stdev=5804.02
  write: io=43,824KiB, bw=2,265KiB/s, runt= 19811msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   50, max=  214, avg=114.24, stdev=29.51
    bw (KiB/s) : min=    0, max= 8881, per=50.27%, avg=3052.36, stdev=2789.57
  cpu          : usr=0.62%, sys=0.50%, ctx=7709
  IO depths    : 1=0.1%, 2=0.8%, 4=17.1%, 8=81.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.5%, 10=3.6%, 20=8.1%, 50=16.7%, 100=34.8%
     lat (msec): 250=35.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30414
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=14.6%, 100=37.0%
     lat (msec): 250=43.8%, 500=1.4%, 750=1.4%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30415
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.5%, 50=5.9%, 100=46.2%
     lat (msec): 250=46.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=227MiB, aggrb=10,604KiB/s, minb=0KiB/s, maxb=4,646KiB/s, mint=0msec, maxt=22479msec
  WRITE: io=115MiB, aggrb=6,072KiB/s, minb=0KiB/s, maxb=2,265KiB/s, mint=0msec, maxt=22479msec

Disk stats (read/write):
  cciss!c0d0: ios=4402/2473, merge=819/113, ticks=51312/64148, in_queue=115448, util=97.67%
0.35user 0.63system 0:24.22elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
465704inputs+235112outputs (0major+2450minor)pagefaults 0swaps