[Xen-devel] RE: [PATCH] Align periodic vpts

["Wei, Gang" <gang.wei@xxxxxxxxx>]

On Thursday, February 12, 2009 10:10 AM, Wei, Gang wrote:
> Just as Kevin explained, aligning periodic timer in the beginning could bring
> powe gain with less impact to timer expiry accuracy, so it is suitable for
> using before we dig out most of the side effect for large slop range timer. I
> will try to make the option per-domain and then resend the patch. Meanwhile,
> I am also prefer to make this option default on. Any further comments?    

Here is the updated patch which makes a per-domain option "vpt_align". The C3 
average residency was doubled with vpt_align=1for RHEL5 hvm guest.

Jimmy

Attachment: vpt-align-0213.patch
Description: vpt-align-0213.patch

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