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xen-devel
[Xen-devel] Re: Linux 2.6 guest BUG().
Keir Fraser wrote:
On 1 Feb 2006, at 16:08, Matt Ayres wrote:
I assume you mean Xen's memory usage. I am showing 141MB free out of
8112MB total. Our scripts to add accounts don't allow adding more
accounts then there is memory for, we actually leave about 128MB as a
buffer.
That's a bit odd then. If you don't explicitly specify dom0's memory
allocation at boot time then you should end up with 128MB 'slack' left
unallocated. And that should all be <4GB.
If you are giving dom0 all of memory on boot, and then reducing it
later, that could be a problem (dom0 may end up giving back only memory
>4GB).
I am allocating 256MB of RAM to dom0. I am running Fedora Core 4. On
this particular server I am running httpd/mysqld on the host with a fair
amount of activity to it, but I have extended swap space to 1GB and
tuned both apps for low memory usage. The memory is set statically via
kernel line in grub. (dom0-min-mem 262144) is set in xend-config.sxp to
ensure it keeps the memory allocated to it.
Thank you,
Matt Ayres
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