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] [15.0% done] [ 17993/  4116 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [20.0% done] [  7358/ 13027 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [23.8% done] [ 15311/  3458 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [  9459/  9146 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 12901/  6660 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  7558/ 10199 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 17822/  1556 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  5376/  9183 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 14071/  2031 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12759/  1747 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 12227/  2023 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  6107/  5648 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7513/  3063 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8500/  1832 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6391/  2950 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5225/  2295 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9540, got signal=6
Threads: 2: [m_m] [61.3% done] [  3697/  3291 kb/s] [eta 00m:12s]
Threads: 2: [V_m] [62.5% done] [ 13616/   743 kb/s] [eta 00m:12s]
Threads: 1: [__m] [63.6% done] [ 19163/   963 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9541, got signal=6

fio: (groupid=0): err= 0: pid=9539
  read : io=100MiB, bw=4,955KiB/s, runt= 21094msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  671, avg=70.53, stdev=55.70
    bw (KiB/s) : min=   15, max=22478, per=47.96%, avg=5614.13, stdev=5129.81
  write: io=30,512KiB, bw=1,598KiB/s, runt= 19540msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   19, max=  299, avg=100.54, stdev=35.73
    bw (KiB/s) : min=    0, max= 6273, per=44.61%, avg=2246.00, stdev=2137.06
  cpu          : usr=0.44%, sys=0.63%, ctx=7241
  IO depths    : 1=0.1%, 2=0.5%, 4=17.0%, 8=82.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=5.9%, 20=9.4%, 50=16.6%, 100=34.2%
     lat (msec): 250=32.8%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9540
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=11.6%, 100=41.8%
     lat (msec): 250=45.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9541
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=13.8%, 100=36.7%
     lat (msec): 250=45.4%, 500=1.4%, 750=0.7%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=235MiB, aggrb=11,706KiB/s, minb=0KiB/s, maxb=4,955KiB/s, mint=0msec, maxt=21094msec
  WRITE: io=96,080KiB, aggrb=5,035KiB/s, minb=0KiB/s, maxb=1,598KiB/s, mint=0msec, maxt=21094msec

Disk stats (read/write):
  cciss!c0d0: ios=4430/1941, merge=715/55, ticks=50388/28920, in_queue=79300, util=97.98%
0.30user 0.89system 0:22.80elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k
482496inputs+192192outputs (0major+2442minor)pagefaults 0swaps