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Re: [Xen-devel] RE: information leaking between domains viagranted pages
| To: | James Harper <james.harper@xxxxxxxxxxxxxxxx>, "Santos, Jose Renato G" <joserenato.santos@xxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] RE: information leaking between domains viagranted pages? |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 04 Mar 2008 09:48:52 +0000 |
| Delivery-date: | Tue, 04 Mar 2008 01:50:14 -0800 |
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| Thread-topic: | [Xen-devel] RE: information leaking between domains viagranted pages? |
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On 4/3/08 09:43, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote: >> Yes, it's a little surprising, but experiments showed that, even with >> lareg >> datagrams, the performance of copying versus flipping was pretty >> comparable. >> With normal Ethernet MTU copying was significantly faster. Also > copying >> gives us more flexibility wrt where we place the data in the domU > page. So >> flipping is now deprecated. >> > > Even with large send offload? Up to a page of data, yes, and that's all that matters (since flipping overhead is per-page). -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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