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RE: [Xen-devel] [PATCH] speed up shadow of x86_64 Linux guests using 3pa
| To: | "Li, Xin B" <xin.b.li@xxxxxxxxx>, "Tim Deegan" <Tim.Deegan@xxxxxxxxxxxxx>, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] [PATCH] speed up shadow of x86_64 Linux guests using 3paging levels |
| From: | "Li, Xin B" <xin.b.li@xxxxxxxxx> |
| Date: | Wed, 15 Nov 2006 00:51:29 +0800 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 14 Nov 2006 08:51:59 -0800 |
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| Thread-index: | AccIDB4isol4jjA4R42o7oGtk/+XFgAAKdSg |
| Thread-topic: | [Xen-devel] [PATCH] speed up shadow of x86_64 Linux guests using 3paging levels |
>-----Original Message----- >From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx >[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Li, Xin B >Sent: 2006年11月15日 0:44 >To: Tim Deegan; Keir Fraser >Cc: xen-devel@xxxxxxxxxxxxxxxxxxx >Subject: [Xen-devel] [PATCH] speed up shadow of x86_64 Linux >guests using 3paging levels > >Speed up shadow of x86_64 Linux guests using 3 paging levels. >Linux kernel 2.6.9 or older uses 3 paging levels and its direct map is >from 0x10000000000. > On a UP RHEL4u3 guest, kernel build of defconfig changed from 420s to 370s, 12% improved. On a 4 vCPUs RHEL4u3 guest, kernel build of defconfig changed from 213s to 121s, 43% improved. so KB scalability on RHEL4u3 SMP guest is linear like FC5. -Xin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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