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From: Gianluca Guida <gianluca.guida@eu.citrix.com>
To: George Dunlap <George.Dunlap@eu.citrix.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	Tim Deegan <Tim.Deegan@eu.citrix.com>,
	Gianluca Guida <glguida@gmail.com>,
	Wei Huang <wei.huang2@amd.com>,
	Keir Fraser <Keir.Fraser@eu.citrix.com>
Subject: Re: [RFC][Patches] Xen 1GB Page Table Support
Date: Fri, 20 Mar 2009 14:21:47 +0000	[thread overview]
Message-ID: <49C3A67B.9050209@eu.citrix.com> (raw)
In-Reply-To: <49C3A76F.5080508@eu.citrix.com>

George Dunlap wrote:
> Gianluca Guida wrote:
>> Changing the p2m of course won't help in the shadow pagetables case. :/
>>   
> No, but it seems to me that 1G p2m entries can't hurt performance for 
> shadows either, which is the question Dan was raising.

Yes, I am sure they won't. They'll make the p2m walk faster, which is 
good, but wont' affect shadow performance in a significant way.

> It might be nice to have some quick "sanity check" benchmarks, just to 
> make sure that adding the 1G pages won't hurt performance for the normal 
> case...

Might do it, but I don't think it's necessary.

Thanks,
Gianluca

  reply	other threads:[~2009-03-20 14:21 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-18 15:48 [RFC][Patches] Xen 1GB Page Table Support Huang2, Wei
2009-03-18 17:20 ` George Dunlap
2009-03-18 17:32   ` Keir Fraser
2009-03-18 17:45     ` Huang2, Wei
2009-03-18 19:15       ` Keir Fraser
2009-03-18 17:37   ` Huang2, Wei
2009-03-19  8:07   ` Huang2, Wei
2009-03-19 14:17     ` Dan Magenheimer
2009-03-19 18:51       ` Wei Huang
2009-03-19 19:56         ` Dan Magenheimer
2009-03-19 21:07           ` Wei Huang
2009-03-20  9:45           ` George Dunlap
2009-03-20 13:40             ` Dan Magenheimer
2009-03-20 13:56               ` Wei Huang
2009-03-20 13:59               ` Gianluca Guida
2009-03-20 14:25                 ` George Dunlap
2009-03-20 14:21                   ` Gianluca Guida [this message]
2009-03-20 18:16                     ` Gianluca Guida
2009-03-20 18:32                       ` Huang2, Wei
2009-05-19  0:55     ` Keir Fraser
2010-01-13  4:07     ` Xu, Dongxiao
2010-01-13 16:27       ` Wei Huang
2010-01-14  1:36         ` Xu, Dongxiao

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