[Asterisk-Users] Asterisk and Xen

[John Cianfarani]

Get to answer my own post.  I found an article that talks about the need for
1000HZ timing in the kernel for ztdummy to work properly.  Xen's kernel
builds default to 100HZ just like 2.4 kernels.

I changed the values to 1000 in
/xen-3.0.0/linux-2.6.12-xenU/include/asm-xen/asm/param.h and
xen/include/asm-x86/config.h
And recompiled and now I get decent results

--- Results after 51 passes ---
Best: 99.987793 -- Worst: 99.829102 -- Average: 99.972953

Any other xen "gotchas" I should know about?

Thanks
John

________________________________________
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of John
Cianfarani
Sent: Thursday, February 09, 2006 5:49 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Asterisk and Xen

Hey All,

I've been working on trying to get asterisk to play nice under Xen and I've
run into a bit of a road block.
I'm not using any hardware stuff only ztdummy.
First I had issues getting ztdummy to work but that was solved by
recompiling the xenU kernel to have CONFIG_CRC_CCITT=y which it was missing.

Now ztdummy is seen fine in the virtual machine though when I run zttest I
get horrible results, so I haven't even bothered to test any config yet.
This results are the same for the host machine and the virtual machine.

--- Results after 21 passes ---
Best: 0.000000 -- Worst: -800.012207 -- Average: -799.998233


Anyone know if this is normal, is there a patch/other kernel options or
something that is needed so that ztdummy works correctly?

Thanks
John