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] [ 20633/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 16384/  3186 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [23.8% done] [ 12945/  7786 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [  6325/ 13410 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 15986/  2709 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 16214/  2630 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 14631/  2390 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [ 10759/  4352 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [ 10921/  3079 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 11031/  3213 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10216/  2812 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [56.0% done] [  8262/  4009 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [ 11756/   858 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6266/  3926 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.0% done] [  5120/  3339 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [64.3% done] [  5372/  3253 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [65.5% done] [  7553/   775 kb/s] [eta 00m:10s]
fio: pid=17325, got signal=6
Threads: 2: [Vm_] [65.6% done] [  8262/  2902 kb/s] [eta 00m:11s]
Threads: 2: [Vm_] [64.7% done] [ 18211/   236 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17324, got signal=6

fio: (groupid=0): err= 0: pid=17323
  read : io=100MiB, bw=4,662KiB/s, runt= 22410msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  443, avg=73.26, stdev=49.10
    bw (KiB/s) : min=   29, max=18999, per=46.96%, avg=5477.81, stdev=4451.48
  write: io=35,444KiB, bw=1,776KiB/s, runt= 20428msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   10, max=  237, avg=93.71, stdev=41.30
    bw (KiB/s) : min=    0, max= 8491, per=83.43%, avg=3634.41, stdev=3038.07
  cpu          : usr=0.71%, sys=0.46%, ctx=4349
  IO depths    : 1=1.0%, 2=3.9%, 4=31.0%, 8=64.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=5.6%, 20=6.2%, 50=18.7%, 100=35.3%
     lat (msec): 250=33.4%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17324
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=21.2%, 8=78.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.1%, 20=0.8%, 50=9.0%, 100=47.5%
     lat (msec): 250=39.7%, 500=1.3%, 750=1.0%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17325
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=22.3%, 8=77.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=1.0%, 50=9.8%, 100=48.5%
     lat (msec): 250=40.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=249MiB, aggrb=11,666KiB/s, minb=0KiB/s, maxb=4,662KiB/s, mint=0msec, maxt=22410msec
  WRITE: io=86,916KiB, aggrb=4,356KiB/s, minb=0KiB/s, maxb=1,776KiB/s, mint=0msec, maxt=22410msec

Disk stats (read/write):
  cciss!c0d0: ios=4826/1909, merge=579/82, ticks=53484/27240, in_queue=80716, util=98.93%
0.46user 0.34system 0:23.23elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
510840inputs+173864outputs (0major+2426minor)pagefaults 0swaps