Re: another xen build and pvops kernel

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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:  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
>      --
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> 
> References
> 
>    Visible links
>    1. http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
>    2. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>    3. https://admin.fedoraproject.org/mailman/listinfo/xen

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