From: Juergen Gross <juergen.gross@ts.fujitsu.com>
To: Tim Deegan <Tim.Deegan@citrix.com>
Cc: George Dunlap <dunlapg@umich.edu>,
Zhigang Wang <zhigang.x.wang@oracle.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Keir Fraser <Keir.Fraser@eu.citrix.com>
Subject: Re: Cpu pools discussion
Date: Tue, 28 Jul 2009 12:15:47 +0200 [thread overview]
Message-ID: <4A6ECFD3.4030709@ts.fujitsu.com> (raw)
In-Reply-To: <20090728091929.GI5235@york.uk.xensource.com>
Tim Deegan wrote:
> At 01:41 +0100 on 28 Jul (1248745277), Zhigang Wang wrote:
>> A usecase from me: I want a pool that passthrough pcpus to the mission
>> critical domains. A scheduling algorithm will map vcpus to pcpus one
>> by one in this pool. That will implement a reliable hard partitioning.
>> although it will lose some benefit of virtualization.
>
> That's easily done by setting affinity masks in the tools, without
> needing any mechanism in Xen.
More or less.
You have to set the affinity masks for ALL domains to avoid scheduling on the
"special" cpus.
You won't have reliable scheduling weights any more.
Juergen
--
Juergen Gross Principal Developer Operating Systems
TSP ES&S SWE OS6 Telephone: +49 (0) 89 636 47950
Fujitsu Technolgy Solutions e-mail: juergen.gross@ts.fujitsu.com
Otto-Hahn-Ring 6 Internet: ts.fujitsu.com
D-81739 Muenchen Company details: ts.fujitsu.com/imprint.html
next prev parent reply other threads:[~2009-07-28 10:15 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-27 15:20 Cpu pools discussion George Dunlap
2009-07-27 15:50 ` Keir Fraser
2009-07-28 0:41 ` Zhigang Wang
2009-07-28 9:19 ` Tim Deegan
2009-07-28 10:15 ` Juergen Gross [this message]
2009-07-28 12:50 ` George Dunlap
2009-07-28 13:07 ` Tim Deegan
2009-07-28 13:24 ` Juergen Gross
2009-07-28 13:31 ` Tim Deegan
2009-07-28 13:39 ` Juergen Gross
2009-07-28 13:47 ` George Dunlap
2009-07-28 13:57 ` Juergen Gross
2009-07-28 15:29 ` Dan Magenheimer
2009-07-28 15:49 ` Keir Fraser
2009-07-28 16:26 ` George Dunlap
2009-07-29 0:29 ` Zhigang Wang
2009-07-29 5:47 ` Juergen Gross
2009-07-28 13:41 ` George Dunlap
2009-07-28 13:55 ` Keir Fraser
2009-07-29 6:14 ` Juergen Gross
2009-07-29 7:39 ` Keir Fraser
2009-07-29 8:52 ` Juergen Gross
2009-07-29 9:35 ` Keir Fraser
2009-07-29 11:06 ` Juergen Gross
2009-07-29 12:28 ` Keir Fraser
2009-07-29 12:33 ` Juergen Gross
2009-07-29 13:00 ` Keir Fraser
2009-07-30 5:46 ` Juergen Gross
2009-07-30 8:30 ` Keir Fraser
2009-07-30 8:58 ` Juergen Gross
2009-07-30 12:51 ` Juergen Gross
2009-07-30 13:18 ` Keir Fraser
2009-07-31 5:25 ` Juergen Gross
2009-07-28 5:40 ` Juergen Gross
2009-07-28 9:09 ` Keir Fraser
2009-07-28 10:19 ` Juergen Gross
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4A6ECFD3.4030709@ts.fujitsu.com \
--to=juergen.gross@ts.fujitsu.com \
--cc=Keir.Fraser@eu.citrix.com \
--cc=Tim.Deegan@citrix.com \
--cc=dunlapg@umich.edu \
--cc=xen-devel@lists.xensource.com \
--cc=zhigang.x.wang@oracle.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.