<div class="gmail_quote">On Mon, Mar 29, 2010 at 7:32 AM, tink <span dir="ltr"><<a href="mailto:andrej@paradise.net.nz">andrej@paradise.net.nz</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">
> For anyone using Ubuntu and RAID5 I recommend you checkout the following<br>
> couple of pages and set your stripe_cache_size accordingly:<br>
> <a href="http://randomitblog.blogspot.com/2009/10/ubuntu-raid-tweak.html" target="_blank">http://randomitblog.blogspot.com/2009/10/ubuntu-raid-tweak.html</a><br>
> <a href="http://peterkieser.com/2009/11/29/raid-mdraid-stripe_cache_size-vs-write-transfer/" target="_blank">http://peterkieser.com/2009/11/29/raid-mdraid-stripe_cache_size-vs-write-transfer/</a><br>
> By changing the stripe_cache_size parameter to 16meg I saw a 10x improvement<br>
> in write operations.<br>
<br>
</div>/me coughs ...<br>
<br>
just hope the power never fails, and the box never<br>
hangs before that write was committed to disk.<br><br></blockquote></div><br><div>Any recommendations?</div><div><br></div><div>Ubuntu's default of 256 delivers pathetic write performance.</div><div>8192 seems like a good option, but is something between 256 and 8192 a better compromise for speed/reliability?</div>
<div><br></div><div><br></div><div>David</div><div><br></div>