Re: [Xen-devel] [BUG] unfairness in Xen's credit scheduler

[Wei Liu <liuw@xxxxxxxxx>]

On Tue, Sep 3, 2013 at 10:26 AM, George Dunlap
<george.dunlap@xxxxxxxxxxxxx> wrote:
> On 09/02/2013 12:35 PM, lwcheng@xxxxxxxxx wrote:
>>
>> Hi George, you may fix this problem quickly. I am stuck with some
>> research work in recent days and it will take a long time to wait for my
>> patch.. thanks!
>
>
> OK, no problem.  It's on my list, so it will get fixed before the 4.4
> release one way or another.
>
> BTW, convention on this list is to reply below the thing you're replying to
> (as I'm doing now), rather than top-posting (as you have done a few times
> now).
>
> Peace,
>  -George
>

Sort of doing a sweep of bug list.

This bug was independently reported and fixed by

Author:     Nate Studer <nate.studer@xxxxxxxxxxxxxxx>
AuthorDate: Fri Nov 15 17:38:10 2013 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Nov 15 17:38:10 2013 +0100

    credit: Update other parameters when setting tslice_ms

    Add a utility function to update the rest of the timeslice
    accounting fields when updating the timeslice of the
    credit scheduler, so that capped CPUs behave correctly.

    Before this patch changing the timeslice to a value higher
    than the default would result in a domain not utilizing
    its full capacity and changing the timeslice to a value
    lower than the default would result in a domain exceeding
    its capacity.

    Signed-off-by: Nate Studer <nate.studer@xxxxxxxxxxxxxxx>
    Reviewed-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
    Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>

Cool, no need to do anything anymore. This one can be marked closed now. :-)

Wei.

>
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