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Re: [Xen-devel] Will Xen 4.0 release use the pv-ops kernel despite it's
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Will Xen 4.0 release use the pv-ops kernel despite it's performance hit |
| From: | Tom Rotenberg <tom.rotenberg@xxxxxxxxx> |
| Date: | Mon, 21 Dec 2009 08:16:32 +0200 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Sun, 20 Dec 2009 22:16:55 -0800 |
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OK. I just thought i saw Jeremy's mail about changing the APIC logic in Xen to conform to the pv-ops kernel, which i thought will cause new Xen not to work with old dom0 kernel. This isn't the case? On Sun, Dec 20, 2009 at 11:53 PM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote: > On 20/12/2009 17:41, "Tom Rotenberg" <tom.rotenberg@xxxxxxxxx> wrote: > >> Will Xen 4.0 release use the pv-ops kernel, despite the fact that it >> has about ~15% hit in performance? >> This is a major performance hit, and releasing a new Xen version with >> a 15% performance hit in the dom0 kernel compared to a previous >> version, will just cause people not to upgrade to Xen 4.0 (especially >> if Xen 4.0, won't support the old 2.6.18 xen kernel anymore). >> >> Is this performance issue going to be addressed prior to Xen 4.0 release? > > Work on both stabilisation and performance will be ongoing. But bear in mind > that upgrading to Xen 4.0 will not require users to switch to pv_ops dom0. > > -- Keir > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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