Re: [Xen-users] Disk-I/O Performance DomU vs Dom0

[Joseph Glanville <joseph.glanville@xxxxxxxxxxxxxx>]

On 9 April 2012 16:25, Fajar A. Nugraha <list@xxxxxxxxx> wrote:
> On Mon, Apr 9, 2012 at 12:44 PM, Joseph Glanville
> <joseph.glanville@xxxxxxxxxxxxxx> wrote:
>> If you want really good I/O performance because it's important for
>> your workload I would highly recommend using a more recent 3.2 dom0
>> kernel.
>> I understand this is not practical for some that need to use
>> "Enterprise" distros but that is the price you pay for using old
>> kernels.
>
> Some "enterprise" distros and their kernel version:
> - Oracle Linux 5/6: 3.0.x (when using kernel UEK2). Should be
> installabe on RHEL/centos as well, but you won't get the support
> (obviously)
> - SLES11 SP2: 3.0.10
> - Ubuntu 11.04 (when it's released): 3.2.x
>
>> Debian Squeeze with 2.6.32 is incredibly stable and I would recommend
>> leaving it alone if that's what matters to you most.
>
> Judging from the mails to this list from debian users, I wouldn't
> recommend using their built-in xen+kernel packages. Period.

The Debian Squeeze setup is fine. It's mostly user error that results
in bad performance and or problems.

That being said I have started development of a dom0 livecd using
Ubuntu 12.04 which is considerably better. Packing Xen 4.1.2 + 3.2 is
a great combination.

I will be open-sourcing the build chain on github that produces the livecd.

>
> --
> Fajar
>
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