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] [13.6% done] [  3925/ 19056 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [  9762/ 12397 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 14956/  6284 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 12389/  6556 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [31.8% done] [ 14695/  2399 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [36.4% done] [  8244/ 10868 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [39.1% done] [  6341/ 10315 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [  8122/  7508 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [ 12902/  3404 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8582/  4966 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  8940/  4063 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7720/  4222 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9033/  2490 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [ 10884/   626 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7707/  2432 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  9090/   866 kb/s] [eta 00m:10s]
Threads: 3: [Vmm] [63.3% done] [  9298/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6023, got signal=6
Threads: 2: [V_m] [64.5% done] [ 23225/     0 kb/s] [eta 00m:11s]
Threads: 1: [__m] [65.6% done] [ 17579/  1610 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6024, got signal=6

fio: (groupid=0): err= 0: pid=6022
  read : io=99MiB, bw=4,979KiB/s, runt= 20935msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  205, avg=71.81, stdev=40.87
    bw (KiB/s) : min=    6, max=27556, per=53.37%, avg=5766.03, stdev=6069.36
  write: io=41,528KiB, bw=2,263KiB/s, runt= 18783msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   20, max=  178, avg=117.55, stdev=26.89
    bw (KiB/s) : min=    0, max= 8642, per=55.11%, avg=3817.65, stdev=3327.17
  cpu          : usr=0.86%, sys=0.63%, ctx=7179
  IO depths    : 1=0.1%, 2=0.7%, 4=12.9%, 8=86.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=2.9%, 20=5.9%, 50=16.4%, 100=39.4%
     lat (msec): 250=34.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6023
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.8%, 50=7.5%, 100=48.3%
     lat (msec): 250=41.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6024
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.4%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=0.2%, 50=11.8%, 100=46.9%
     lat (msec): 250=38.0%, 500=1.7%, 750=0.5%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=10,803KiB/s, minb=0KiB/s, maxb=4,979KiB/s, mint=0msec, maxt=20935msec
  WRITE: io=124MiB, aggrb=6,927KiB/s, minb=0KiB/s, maxb=2,263KiB/s, mint=0msec, maxt=20935msec

Disk stats (read/write):
  cciss!c0d0: ios=3994/2220, merge=671/172, ticks=43816/31384, in_queue=75188, util=99.14%
0.41user 0.34system 0:22.12elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
442336inputs+254168outputs (0major+2446minor)pagefaults 0swaps