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] [15.8% done] [ 12226/  9839 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [20.0% done] [ 10343/ 11250 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [23.8% done] [  6853/ 12605 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 12601/  6870 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [31.8% done] [ 14169/  3283 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [36.4% done] [ 12259/  4811 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [39.1% done] [  8985/  7862 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [  8350/  7814 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [ 10821/  4221 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  4303/ 10120 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  4453/  7577 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  6471/  5873 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9757/  2338 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5068/  4388 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8964/  1430 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  6308/  2729 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  4596/  2851 kb/s] [eta 00m:10s]
Threads: 3: [mmV] [64.5% done] [  4002/  3222 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9603, got signal=6
Threads: 2: [m_V] [65.6% done] [ 25189/   386 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [ 14671/     0 kb/s] [eta 00m:11s]
fio: pid=9602, got signal=6

fio: (groupid=0): err= 0: pid=9602
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=7.4%, 100=40.8%
     lat (msec): 250=47.3%, 500=1.7%, 750=0.9%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9603
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=6.9%, 100=49.0%
     lat (msec): 250=42.6%, 500=0.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9604
  read : io=100MiB, bw=4,777KiB/s, runt= 21903msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  207, avg=65.61, stdev=49.29
    bw (KiB/s) : min=   44, max=27549, per=54.27%, avg=5797.48, stdev=5965.78
  write: io=37,104KiB, bw=1,915KiB/s, runt= 19836msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   23, max=  180, avg=91.92, stdev=33.35
    bw (KiB/s) : min=    0, max= 6506, per=48.38%, avg=2883.14, stdev=2247.24
  cpu          : usr=0.73%, sys=0.47%, ctx=7869
  IO depths    : 1=0.1%, 2=1.9%, 4=19.7%, 8=78.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=1.4%, 10=11.2%, 20=9.5%, 50=12.9%, 100=29.3%
     lat (msec): 250=35.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=223MiB, aggrb=10,683KiB/s, minb=0KiB/s, maxb=4,777KiB/s, mint=21903msec, maxt=21903msec
  WRITE: io=113MiB, aggrb=5,959KiB/s, minb=0KiB/s, maxb=1,915KiB/s, mint=21903msec, maxt=21903msec

Disk stats (read/write):
  cciss!c0d0: ios=4340/2421, merge=713/160, ticks=48452/33732, in_queue=82180, util=99.26%
0.43user 0.31system 0:22.54elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
457336inputs+230944outputs (0major+2447minor)pagefaults 0swaps