Re: [Xen-devel] 4.2 TODO List

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2012-02-28 at 15:47 +0000, Mathieu Gagnà wrote:
> On 2/28/12 10:21 AM, Ian Campbell wrote:
> > On Tue, 2012-02-28 at 15:08 +0000, Mathieu Gagnà wrote:
> >>
> >> Will there be support for rate limiting for vif as there is in xm/xend?
> >>
> >> The help for the command "network-attach" shows support for "rate".
> >> Unfortunately, an error occurs when using the "rate" parameter:
> >> "the rate parameter for vifs is currently not supported"
> >
> > I think this ought to be fixed before 4.2.
> >
> > It should be a fairly simple matter to plumb the parameter through to
> > the underlying xenstore key. If you feel up to creating a patch I'd be
> > happy to give some guidance.
> >
> 
> Someone already proposed [1] a patch which accept rate in the form 
> "kb_per_sec,timeslice_usec". However it got rejected [1] because xm/xend 
> accepts this syntax (1Mb/s@1ms) instead and backward compatibility 
> should be preserved.
> 
> What should be the syntax for this parameter?

It should be the xend syntax unless whoever implements itcan make a
convincing argument why some other syntax is "better enough" to justify
breaking backwards conmpat.

> 
> [1] http://lists.xen.org/archives/html/xen-devel/2011-03/msg01963.html
> [2] http://lists.xen.org/archives/html/xen-devel/2011-03/msg01978.html
> 



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