title: how to achieve disk write speed as high as fio does?
body: <p>I bought a Highpoint a HBA card with 4 Samsung 960PRO in it.As the official site said this card can perform 7500MB/s in writing and 13000MB/s in reading.</p>
  
  <p>When I test this card with fio in my ubuntu 16.04 system,I got a writing speed of about 7000MB/s,here is my test arguments:</p>
  
  <pre><code>sudo fio -filename=/home/xid/raid0_dir0/fio.test -direct=1 -rw=write -ioengine=sync -bs=2k -iodepth=32 -size=100G -numjobs=1 -runtime=100 -time_base=1 -group_reporting -name=test-seq-write
  </code></pre>
  
  <p>I have made a raid0 in the card and made a xfs filesystem.I want to know how to achieve disk writing speed as high as fio performed if I want to use functions such as "open(),read(),write()" or functions such as "fopen(),fread(),fwrite()"  in my console applications.</p>