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[Xen-devel] realtime scheduling

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] realtime scheduling
From: Holger Steinhaus <hsteinhaus@xxxxxx>
Date: Mon, 08 Aug 2005 17:06:56 +0200
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Hi everyone,

I am trying to set up an ISDN gateway and PBX system and want to use Xen to seperate some components against each other. Unfortunatly, a necessary device driver (zaphfc) depends on very short latencys for servicing interrupts. This driver is located in domain0 and everything runs fine, as long as all other domains are idling. If the guests get something to do, the zaphfc driver suffers massive buffer under/overflow problems.

I've found some hints about the Atropos realtime scheduler on the list, but some posts say, it is broken currently.

1.) Are there any releases with a working RT-like scheduler?
2.) Do you have any other idea to minimize the scheduling-related latency for domain 0?


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