Software Raid Cache [was: Re: System profiling tools?]

Wed Mar 23 09:40:03 2005

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Eric "Shubes" wrote:
<blockquote cite="mid4241AC2E.8090407@shubes.net" type="cite"><a class="moz-txt-link-abbreviated" href="mailto:Bryan.ONeal@asu.edu">Bryan.ONeal@asu.edu</a>
wrote:
  <br>
  <blockquote type="cite">This reminds me, can you specify memory space
for a software raid cache?
    <br>
    <br>
  </blockquote>
I just checked the book "Managing Raid on Linux" (O'Reilly 2003), and
there's no mention of such a thing there. Only hardware raid cache.
  <br>
</blockquote>
>From the <a
 href="http://www.faqs.org/docs/linux_admin/buffer-cache.html">FAQ</a>:<br>
"To make the most efficient use of real memory, Linux automatically
uses all free RAM for buffer cache, but also automatically makes the
cache smaller when programs need more memory."<br>
". . .you do not need to worry about it."<br>
<br>
This is why bonnie, other benchmarks insist on a test size of at least
2X your memory...<br>
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