[Xen-users] tsc problems under 3.[12].x

To:	<xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-users] tsc problems under 3.[12].x
From:	"James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date:	Tue, 19 Aug 2008 22:15:56 +1000
Delivery-date:	Tue, 19 Aug 2008 05:16:36 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
List-help:	<mailto:xen-users-request@lists.xensource.com?subject=help>
List-id:	Xen user discussion <xen-users.lists.xensource.com>
List-post:	<mailto:xen-users@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender:	xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index:	AckB9VUV5fPwROymRWK82mqd/mBEAg==
Thread-topic:	tsc problems under 3.[12].x

I'm seeing lots of problems under Windows which I think are related to
wildly different tsc counters.

Ping gives really strange numbers when vcpus > 1, windows updates
download really slowly (1%/hour with vcpus > 1, 1%/second with vcpus =
1), and anything that reports the tsc shows that it jumps around as it
gets scheduled onto different cpu's.

Is there something I can do about this? Is it a problem with my
hardware? It does it on two completely different servers, although both
use AMD cpu's. Is it fixed in a later version of xen?

Thanks

James

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

WARNING - OLD ARCHIVES

xen-users

[Xen-users] tsc problems under 3.[12].x