Re: [Xen-users] Memory squeeze in netback driver

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> I'm useing XEN 3.0.3 on a Suse 10.2 x86_64  with 8Gb RAM. I've added
> dom0_mem=512M to grub but I'm not sure that i've rebooted since then. So
> I can't tell that there's a limit.

This would probably help.  You'll probably also want to check that 
dom0-min-mem is set appropriately - see my other e-mail.

> Do I ran into a memory problem of Dom0? So how do I best calculate the
> memory need for dom0

One of the problems that can happen is that ballooning dom0 down by a lot 
sometimes confuses Linux and makes it think that there's terrible memory 
pressure when there actually isn't.  I think this was one of the causes of 
these errors - starting dom0 with a smaller memory footprint avoids this 
because you don't have to balloon it so drastically.

Cheers,
Mark

-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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