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: [FmF] [42.9% done] [   353/  8562 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [44.4% done] [    60/     0 kb/s] [eta 00m:05s]
Threads: 3: [FmF] [45.5% done] [   349/     0 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [42.9% done] [   211/   549 kb/s] [eta 00m:08s]
Threads: 3: [FmF] [43.8% done] [    85/     0 kb/s] [eta 00m:09s]
Threads: 3: [FmF] [44.4% done] [   251/  1897 kb/s] [eta 00m:10s]
Threads: 3: [VmV] [47.4% done] [ 42525/     0 kb/s] [eta 00m:10s]
Threads: 3: [VmV] [45.5% done] [ 66190/     0 kb/s] [eta 00m:12s]
Threads: 2: [EmV] [47.8% done] [ 57706/     0 kb/s] [eta 00m:12s]
Threads: 2: [_mV] [52.2% done] [ 30709/     0 kb/s] [eta 00m:11s]
Threads: 1: [_m_] [61.9% done] [ 20048/ 10518 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20031, got signal=6

fio: (groupid=0): err= 0: pid=20030
  read : io=100MiB, bw=9,691KiB/s, runt= 10820msec
    clat (msec): min=    0, max=  295, avg= 8.17, stdev=24.69
    bw (KiB/s) : min=    0, max=47079, per=177.09%, avg=33156.60, stdev=18878.83
  write: io=100MiB, bw=12,864KiB/s, runt=  8151msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   14, avg= 0.46, stdev= 1.11
    bw (KiB/s) : min=    0, max=61260, per=127.90%, avg=40465.67, stdev=35048.79
  cpu          : usr=18.45%, sys=6.62%, ctx=11618
  IO depths    : 1=57.0%, 2=21.4%, 4=17.2%, 8=4.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=64.4%, 4=12.8%, 10=15.7%, 20=4.3%, 50=0.6%, 100=0.5%
     lat (msec): 250=1.5%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20031
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=13.8%, 2=56.7%, 4=7.7%, 8=21.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=64.2%, 4=5.4%, 10=0.6%, 20=2.3%, 50=14.2%, 100=4.5%
     lat (msec): 250=4.2%, 500=1.5%, 750=0.7%, 1000=0.6%, >=2000=0.9%
fio: (groupid=0): err= 0: pid=20032
  read : io=100MiB, bw=8,329KiB/s, runt= 12588msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  206, avg=16.55, stdev=35.61
    bw (KiB/s) : min=    1, max=34770, per=113.08%, avg=21172.50, stdev=10690.40
  write: io=93,748KiB, bw=10,860KiB/s, runt=  8839msec
    slat (msec): min=    0, max=    2, avg= 0.00, stdev= 0.05
    clat (msec): min=    0, max=   96, avg= 0.91, stdev= 4.72
    bw (KiB/s) : min=    0, max=61921, per=144.79%, avg=45809.00, stdev=30549.32
  cpu          : usr=15.63%, sys=5.40%, ctx=5962
  IO depths    : 1=1.9%, 2=64.9%, 4=25.0%, 8=8.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.1%, 4=18.6%, 10=22.3%, 20=1.8%, 50=0.5%, 100=2.6%
     lat (msec): 250=4.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=225MiB, aggrb=18,723KiB/s, minb=0KiB/s, maxb=9,691KiB/s, mint=12588msec, maxt=12588msec
  WRITE: io=267MiB, aggrb=31,638KiB/s, minb=0KiB/s, maxb=12,864KiB/s, mint=12588msec, maxt=12588msec

Disk stats (read/write):
  cciss!c0d0: ios=4005/2701, merge=894/61097, ticks=35732/966292, in_queue=1002196, util=92.19%
5.27user 1.77system 0:13.75elapsed 51%CPU (0avgtext+0avgdata 0maxresident)k
491464inputs+546376outputs (0major+2444minor)pagefaults 0swaps