- 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(a)iki.fi> wrote:
From: Pasi Kärkkäinen <pasik(a)iki.fi>
Subject: Re: [Fedora-xen] another xen build and pvops kernel
To: "Boris Derzhavets" <bderzhavets(a)yahoo.com>
Cc: xen(a)lists.fedoraproject.org, xen-users(a)lists.xensource.com
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(a)durham.ac.uk> wrote:
From: M A Young <m.a.young(a)durham.ac.uk>
Subject: Re: [Fedora-xen] another xen build
To: xen(a)lists.fedoraproject.org
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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