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xen-devel
Re: [Xen-devel] Re: Scheduling groups, credit scheduler support
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"Mike D. Day" <ncmike@xxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx |
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Subject: |
Re: [Xen-devel] Re: Scheduling groups, credit scheduler support |
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From: |
Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx> |
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Date: |
Wed, 19 Dec 2007 16:08:58 +0000 |
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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
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- Re: [Xen-devel] [PATCH] Scheduling groups, credit scheduler support, Keir Fraser
- [Xen-devel] Re: Scheduling groups, credit scheduler support, Mike D. Day
- [Xen-devel] Re: Scheduling groups, credit scheduler support, Keir Fraser
- [Xen-devel] Re: Scheduling groups, credit scheduler support, Mike D. Day
- [Xen-devel] Re: Scheduling groups, credit scheduler support, Keir Fraser
- Re: [Xen-devel] Re: Scheduling groups, credit scheduler support, Samuel Thibault
- Re: [Xen-devel] Re: Scheduling groups, credit scheduler support, Samuel Thibault
- Re: [Xen-devel] Re: Scheduling groups, credit scheduler support,
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Re: [Xen-devel] Re: Scheduling groups, credit scheduler support, Samuel Thibault
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