From: Samuel Thibault <samuel.thibault@eu.citrix.com>
To: "Mike D. Day" <ncmike@us.ibm.com>,
Keir Fraser <Keir.Fraser@cl.cam.ac.uk>,
xen-devel@lists.xensource.com
Subject: Re: Re: Scheduling groups, credit scheduler support
Date: Wed, 19 Dec 2007 16:08:58 +0000 [thread overview]
Message-ID: <20071219160858.GL4217@implementation.uk.xensource.com> (raw)
In-Reply-To: <20071214173627.GQ4296@implementation.uk.xensource.com>
Samuel Thibault, le Fri 14 Dec 2007 17:36:27 +0000, a écrit :
> Samuel Thibault, le Fri 14 Dec 2007 16:26:13 +0000, a écrit :
> > I tested groups a bit (the merge goes very fine) but couldn't see a
> > difference,
>
> Oops, scratch that: groups operations were not working.
This time I could really test it. There is no real performance
difference even when dom0 is busy looping. It hence looks like the
boosting feature of the credit scheduler already does a good job.
However, when using the "cap" feature of the credit scheduler, there is
indeed a noticeable difference: the stubdomain cpu time properly gets
accounted in the HVM cpu time, and the cap does have an effect on the
whole of the two.
Now I guess this has to be somehow merged with the other, more
instrusive, group support that got submitted to xen-devel.
Samuel
next prev parent reply other threads:[~2007-12-19 16:08 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-29 20:19 [PATCH] Scheduling groups, credit scheduler support Mike D. Day
2007-11-29 22:36 ` Chris B
2007-12-03 15:37 ` Chris
2007-12-03 17:59 ` Mike D. Day
2007-12-04 19:32 ` Chris
2007-12-04 23:04 ` Keir Fraser
2007-12-06 16:42 ` Chris
2007-12-14 17:20 ` Samuel Thibault
2007-12-18 16:04 ` Chris
2007-12-04 10:38 ` [PATCH] " Keir Fraser
2007-12-04 13:50 ` Mike D. Day
2007-12-04 23:06 ` Keir Fraser
2007-12-14 13:35 ` Mike D. Day
2007-12-14 13:50 ` Keir Fraser
2007-12-14 16:26 ` Samuel Thibault
2007-12-14 17:36 ` Samuel Thibault
2007-12-19 16:08 ` Samuel Thibault [this message]
2007-12-14 16:49 ` Samuel Thibault
2007-12-19 20:18 ` Mike D. Day
2007-12-05 1:34 ` does xen-linux for PV support the Linux Standards base , or not ? tgh
2007-12-05 3:49 ` Mark Williamson
2007-12-14 17:01 ` [PATCH] Scheduling groups, credit scheduler support Samuel Thibault
2007-12-17 16:57 ` Samuel Thibault
2007-12-18 11:50 ` Samuel Thibault
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