> - How did you measure this performance difference? Database server running on PV DomU with intensive I/O. Workload connected with loading and unloading tables to/from ASCII files residing on the guest's image. > - Did you make sure kernel configuration is similar for both kernel types? > Many pvops .configs have various debugging options enabled that kill the performance..
It's my personal impression. I am not an expert in PVOPS config tuning, but try to avoid debugging options. Boris. --- On Wed, 10/20/10, Pasi Kärkkäinen <[email protected]> wrote: From: Pasi Kärkkäinen <[email protected]> Subject: Re: [Fedora-xen] another xen build and pvops kernel To: "Boris Derzhavets" <[email protected]> Cc: [email protected], [email protected] Date: Wednesday, October 20, 2010, 1:42 PM On Mon, Oct 18, 2010 at 07:49:29AM -0700, Boris Derzhavets wrote: > Just wondering why [1]kernel-2.6.32.23-170.xendom0.fc12.src.rpm cannot > make itself > into F14. It seems pretty stable. Why it cannot be just a package > available via "yum install" . Anyway Fedora's Libvirt has the best > compatibility with Xen 4.0.1. > It's not too late switch back to Xen with PVOPS kernel. XenLinux 2.6.34.7 > aka Suse > is really dangerous . It outperforms pvops kernel about 15-20 % under Xen > 4.0.1. > - How did you measure this performance difference? - Did you make sure kernel configuration is similar for both kernel types? Many pvops .configs have various debugging options enabled that kill the performance.. -- Pasi > I don't mention KVM performance. It's not a competitor for OpenSuse 11.3 > after the > most recent "zypper update" > > Boris. > > --- On Mon, 10/18/10, M A Young <[email protected]> wrote: > > From: M A Young <[email protected]> > Subject: Re: [Fedora-xen] another xen build > To: [email protected] > Date: Monday, October 18, 2010, 6:17 AM > > There is less urgency to test now because 4.0.1-6.fc14 has now made it > into F14 in time for the release. You can of course continue to test if > you want to. > > Michael Young > -- > xen mailing list > [2][email protected] > [3]https://admin.fedoraproject.org/mailman/listinfo/xen > > References > > Visible links > 1. >http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm > 2. file:///mc/[email protected] > 3. https://admin.fedoraproject.org/mailman/listinfo/xen > -- > xen mailing list > [email protected] > https://admin.fedoraproject.org/mailman/listinfo/xen
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