Hey all,

I've been wanting to play around with Asterisk in a Xen virtual
environment for a while and have finally found some time. Getting a
Xen server setup with Centos 5.1 is a breeze, you just select the
virtualization package group on install and away she goes. The
virt-manager tool developed by Redhat
(http://virt-manager.et.redhat.com) and has both a graphical and
command line tool to help you setup new VMs. As this is a server
without gnome/kde/x installed I went the command line route and again
everything is a breeze. I'd love to do a write-up for others once I'm
finished.

Now comes the hard part, getting ztdummy or some sort of timing
mechanism for music on hold, and call conferencing (meetme). Explidous
on the Digium bug tracker created ztxen
(http://bugs.digium.com/view.php?id=9592 ) but it appears it's really
not needed as you can comment out a line before compiling ztdummy.

Here comes the problem. Currently this "requires the kernel to be
compiled with CONFIG_HZ=1000" according to Explidous. I'm sure a lot
of us have had to recompile a kernel before for one thing or another
but on a future production box you try to avoid things like this
because keeping everything standard is much easier to maintain.

I stumbled across http://bugs.centos.org/view.php?id=2189 in my
research which seems to suggest running a 1000hz kernel timer on a SMP
box might be a bad idea.

So now the question becomes what to do.

Thanks,
Blaine Aldridge

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