On Fri, Sep 12, 2008 at 04:58:52PM -0700, kelsey hudson wrote:
> This is an artifact of how the Xen networking works in the version of
> Xen with CentOS 5.
The affected machines run Mandriva.
> Consider the following situation:
>
> A dom0 machine exists with two ethernet adapters, one (eth0) for
> front-end traffic and the other (eth1) for AoE traffic.
[...]
We use a single NIC with multiple VLANs. It's only dom0 that can talk
AoE, the domUs are not connected to the AoE VLAN.
> The performance will be absolutely abysmal without jumbo frame support.
On these machines we have enough memory for domUs so they can cache
their whole working set and they do not produce much I/O, so right now
it's not critical, but we have to do something sooner or later.
Gabor
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MTA SZTAKI Computer and Automation Research Institute
Hungarian Academy of Sciences
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