On Thu, Oct 21, 2010 at 04:40:52AM -0700, Boris Derzhavets wrote:
> Actually, i would be glad to be wrong about performance numbers.
> Following bellow is how i set up 2.6.34.7 as bzImage under Xen 4.0.1
> on top of Ubuntu 10.10 ( Server or Desktop).
>
> http://bderzhavets.wordpress.com/2010/10/17/xenlinux-kernel-2-6-34-7-aka-suse-under-xen-4-0-1-on-top-of-ubuntu-10-10-desktop/
>
It's more about your *pvops* config, not xenlinux config.
-- Pasi
> Boris.
>
> --- On Thu, 10/21/10, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:
>
> From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
> Subject: [Xen-users] Re: [Fedora-xen] another xen build and pvops kernel
> To: "Pasi Kärkkäinen" <pasik@xxxxxx>
> Cc: xen@xxxxxxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
> Date: Thursday, October 21, 2010, 1:49 AM
>
> > - 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 <pasik@xxxxxx> wrote:
>
> From: Pasi Kärkkäinen <pasik@xxxxxx>
> Subject: Re: [Fedora-xen] another xen build and pvops kernel
> To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> Cc: xen@xxxxxxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
> 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 <m.a.young@xxxxxxxxxxxx> wrote:
> >
> > From: M A Young <m.a.young@xxxxxxxxxxxx>
> > Subject: Re: [Fedora-xen] another xen build
> > To: xen@xxxxxxxxxxxxxxxxxxxxxxx
> > 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]xen@xxxxxxxxxxxxxxxxxxxxxxx
> > [3][1]https://admin.fedoraproject.org/mailman/listinfo/xen
> >
> > References
> >
> > Visible links
> > 1.
> [2]http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
> > 2. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
> > 3. [3]https://admin.fedoraproject.org/mailman/listinfo/xen
>
> > --
> > xen mailing list
> > xen@xxxxxxxxxxxxxxxxxxxxxxx
> > [4]https://admin.fedoraproject.org/mailman/listinfo/xen
>
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>
> References
>
> Visible links
> 1. https://admin.fedoraproject.org/mailman/listinfo/xen
> 2.
> http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
> 3. https://admin.fedoraproject.org/mailman/listinfo/xen
> 4. https://admin.fedoraproject.org/mailman/listinfo/xen
> 5. file:///mc/compose?to=Xen-users@xxxxxxxxxxxxxxxxxxx
> 6. http://lists.xensource.com/xen-users
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