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Re: [Xen-devel][PATCH] don't split the whole large page while live migra
| To: | Tim Deegan <Tim.Deegan@xxxxxxxxxx>, "Xin, Xiaohui" <xiaohui.xin@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel][PATCH] don't split the whole large page while live migration with EPT |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 16 Apr 2009 16:16:21 +0100 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Thu, 16 Apr 2009 08:16:42 -0700 |
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| In-reply-to: | <20090416125147.GC10010@xxxxxxxxxxxxxxxxxxxxx> |
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| Thread-index: | Acm+kirABpPlHrCoT/2pf8VtltwSlAAFCGAx |
| Thread-topic: | [Xen-devel][PATCH] don't split the whole large page while live migration with EPT |
| User-agent: | Microsoft-Entourage/12.17.0.090302 |
On 16/04/2009 13:51, "Tim Deegan" <Tim.Deegan@xxxxxxxxxx> wrote: > At 13:47 +0100 on 16 Apr (1239889668), Xin, Xiaohui wrote: >> We haven't measure the performance yet. > > But you're planning to? :) This would be definitely be a prerequisite for taking this patch. Our suspicion is that 2MB pages will be too coarse grained for many workloads, and we'll end up retransmitting superpages where only a handful of 4kB sub-pages are actually dirtied. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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