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Re: [Xen-users] Re: [Fedora-xen] another xen build and pvops kernel

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] Re: [Fedora-xen] another xen build and pvops kernel
From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Date: Thu, 21 Oct 2010 06:04:03 -0700 (PDT)
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
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This one about pvops kernel 2.6.32.24 under Xen 4.0.1 on top of Ubuntu 10.10 Desktop

http://bderzhavets.wordpress.com/2010/10/15/set-up-xen-4-0-1-libvirt-0-8-3-on-top-of-ubuntu-10-10-desktop/

Boris.

--- On Thu, 10/21/10, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] Re: [Fedora-xen] another xen build and pvops kernel
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Date: Thursday, October 21, 2010, 8:40 AM

On Thu, Oct 21, 2010 at 05:39:10AM -0700, Boris Derzhavets wrote:
> Sorry, it's about only XenLinux config and setup .  Nothing about pvops.
>

I meant for the performance comparison/benchmark you need to pay
attention to *pvops* configuration.

-- Pasi

> Boris.
>
> --- On Thu, 10/21/10, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>
>   From: Pasi Kärkkäinen <pasik@xxxxxx>
>   Subject: Re: [Xen-users] Re: [Fedora-xen] another xen build and pvops kernel
>   To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
>   Cc: xen-users@xxxxxxxxxxxxxxxxxxx
>   Date: Thursday, October 21, 2010, 8:25 AM
>
>   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).
>   >
>   >
>   [1]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 <[2]bderzhavets@xxxxxxxxx> wrote:
>   >
>   >   From: Boris Derzhavets <[3]bderzhavets@xxxxxxxxx>
>   >   Subject: [Xen-users] Re: [Fedora-xen] another xen build and pvops kernel
>   >   To: "Pasi Kärkkäinen" <[4]pasik@xxxxxx>
>   >   Cc: [5]xen@xxxxxxxxxxxxxxxxxxxxxxx, [6]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 <[7]pasik@xxxxxx> wrote:
>   >
>   >     From: Pasi Kärkkäinen <[8]pasik@xxxxxx>
>   >     Subject: Re: [Fedora-xen] another xen build and pvops kernel
>   >     To: "Boris Derzhavets" <[9]bderzhavets@xxxxxxxxx>
>   >     Cc: [10]xen@xxxxxxxxxxxxxxxxxxxxxxx, [11]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 <[12]m.a.young@xxxxxxxxxxxx> wrote:
>   >     >
>   >     >      From: M A Young <[13]m.a.young@xxxxxxxxxxxx>
>   >     >      Subject: Re: [Fedora-xen] another xen build
>   >     >      To: [14]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][15]xen@xxxxxxxxxxxxxxxxxxxxxxx
>   >     >      [3][1][16]https://admin.fedoraproject.org/mailman/listinfo/xen
>   >     >
>   >     > References
>   >     >
>   >     >    Visible links
>   >     >    1. [2][17]http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
>   >     >    2. file:///mc/compose?to=[18]xen@xxxxxxxxxxxxxxxxxxxxxxx
>   >     >    3. [3][19]https://admin.fedoraproject.org/mailman/listinfo/xen
>   >
>   >     > --
>   >     > xen mailing list
>   >     > [20]xen@xxxxxxxxxxxxxxxxxxxxxxx
>   >     > [4][21]https://admin.fedoraproject.org/mailman/listinfo/xen
>   >
>   >   -----Inline Attachment Follows-----
>   >
>   >   _______________________________________________
>   >   Xen-users mailing list
>   >   [5][22]Xen-users@xxxxxxxxxxxxxxxxxxx
>   >   [6][23]http://lists.xensource.com/xen-users
>   >
>   > References
>   >
>   >    Visible links
>   >    1. [24]https://admin.fedoraproject.org/mailman/listinfo/xen
>   >    2. [25]http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
>   >    3. [26]https://admin.fedoraproject.org/mailman/listinfo/xen
>   >    4. [27]https://admin.fedoraproject.org/mailman/listinfo/xen
>   >    5. file:///mc/compose?to=[28]Xen-users@xxxxxxxxxxxxxxxxxxx
>   >    6. [29]http://lists.xensource.com/xen-users
>
>   _______________________________________________
>   Xen-users mailing list
>   [30]Xen-users@xxxxxxxxxxxxxxxxxxx
>   [31]http://lists.xensource.com/xen-users
>
> References
>
>    Visible links
>    1. 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/
>    2. file:///mc/compose?to=bderzhavets@xxxxxxxxx
>    3. file:///mc/compose?to=bderzhavets@xxxxxxxxx
>    4. file:///mc/compose?to=pasik@xxxxxx
>    5. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>    6. file:///mc/compose?to=xen-users@xxxxxxxxxxxxxxxxxxx
>    7. file:///mc/compose?to=pasik@xxxxxx
>    8. file:///mc/compose?to=pasik@xxxxxx
>    9. file:///mc/compose?to=bderzhavets@xxxxxxxxx
>   10. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>   11. file:///mc/compose?to=xen-users@xxxxxxxxxxxxxxxxxxx
>   12. file:///mc/compose?to=m.a.young@xxxxxxxxxxxx
>   13. file:///mc/compose?to=m.a.young@xxxxxxxxxxxx
>   14. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>   15. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>   16. https://admin.fedoraproject.org/mailman/listinfo/xen
>   17. http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
>   18. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>   19. https://admin.fedoraproject.org/mailman/listinfo/xen
>   20. file:///mc/compose?to=xen@xxxxxxxxxxxxxxxxxxxxxxx
>   21. https://admin.fedoraproject.org/mailman/listinfo/xen
>   22. file:///mc/compose?to=Xen-users@xxxxxxxxxxxxxxxxxxx
>   23. http://lists.xensource.com/xen-users
>   24. https://admin.fedoraproject.org/mailman/listinfo/xen
>   25. http://fedorapeople.org/%7Emyoung/dom0/src/kernel-2.6.32.23-170.xendom0.fc12.src.rpm
>   26. https://admin.fedoraproject.org/mailman/listinfo/xen
>   27. https://admin.fedoraproject.org/mailman/listinfo/xen
>   28. file:///mc/compose?to=Xen-users@xxxxxxxxxxxxxxxxxxx
>   29. http://lists.xensource.com/xen-users
>   30. file:///mc/compose?to=Xen-users@xxxxxxxxxxxxxxxxxxx
>   31. http://lists.xensource.com/xen-users

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