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] [14.3% done] [ 14683/  5877 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 13177/  6940 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [  7276/ 12218 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 13955/  6247 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [  7797/  8582 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  8041/ 10400 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  7501/  9354 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 10091/  6426 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 13121/  3286 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 12072/  3019 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [ 11633/  3290 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [56.0% done] [  9570/  1895 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [  6223/  4315 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  4063/  5653 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6422/  2643 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  8196/   833 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  2725/  4897 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10949, got signal=6
Threads: 2: [m_m] [66.7% done] [  6353/  1631 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10948, got signal=6
Threads: 1: [__V] [75.0% done] [ 12576/   979 kb/s] [eta 00m:07s]
Threads: 1: [__V] [91.7% done] [ 27126/     0 kb/s] [eta 00m:02s]
fio: (groupid=0): err= 0: pid=10948
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=8.3%, 100=46.9%
     lat (msec): 250=42.8%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10949
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.3%, 20=0.9%, 50=9.4%, 100=43.0%
     lat (msec): 250=45.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10950
  read : io=100MiB, bw=4,647KiB/s, runt= 22552msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  555, avg=66.53, stdev=57.48
    bw (KiB/s) : min=   40, max=27328, per=48.84%, avg=5453.79, stdev=6258.65
  write: io=43,624KiB, bw=2,211KiB/s, runt= 20195msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   47, max=  199, avg=114.47, stdev=24.52
    bw (KiB/s) : min=    0, max= 7692, per=62.33%, avg=3311.18, stdev=2501.47
  cpu          : usr=0.41%, sys=0.41%, ctx=7766
  IO depths    : 1=0.1%, 2=0.4%, 4=16.4%, 8=83.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.5%, 10=4.0%, 20=11.8%, 50=16.1%, 100=31.7%
     lat (msec): 250=34.8%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=240MiB, aggrb=11,166KiB/s, minb=0KiB/s, maxb=4,647KiB/s, mint=22552msec, maxt=22552msec
  WRITE: io=102MiB, aggrb=5,312KiB/s, minb=0KiB/s, maxb=2,211KiB/s, mint=22552msec, maxt=22552msec

Disk stats (read/write):
  cciss!c0d0: ios=4463/2188, merge=573/187, ticks=48428/31800, in_queue=80208, util=99.13%
0.23user 0.56system 0:23.09elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
491880inputs+209600outputs (0major+2448minor)pagefaults 0swaps