From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dario Faggioli <dario.faggioli@citrix.com>
Subject: Re: [PATCH v3 3/4] libxl: add rtds scheduler
Date: Tue, 16 Sep 2014 09:27:30 +0200
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To: Meng Xu <xumengpanda@gmail.com>
Cc: Ian Campbell <ian.campbell@citrix.com>, Sisu Xi <xisisu@gmail.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, George Dunlap <george.dunlap@eu.citrix.com>, Chenyang Lu <lu@cse.wustl.edu>, Ian Jackson <ian.jackson@eu.citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, Linh Thi Xuan Phan <ptxlinh@gmail.com>, Meng Xu <mengxu@cis.upenn.edu>, Jan Beulich <JBeulich@suse.com>, Chao Wang <chaowang@wustl.edu>, Chong Li <lichong659@gmail.com>, Dagaen Golomb <dgolomb@seas.upenn.edu>
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On Mon, 2014-09-15 at 23:32 -0400, Meng Xu wrote:

> 2014-09-15 21:49 GMT-04:00 Ian Campbell <ian.campbell@citrix.com>:

>         Is a 0.5hr maximum period considered to be larger than any
>         practically
>         useful value?
>=20
>=20
> I think so.=20
>
Yes, it is. Most of the people using this scheduler will be interested
in "a few [decades, hundreds] millisecond" period and budget. Someone
might want to try microsecs, someone may be fine with seconds.

For anyone that is interested in anything else, this scheduler is the
wrong solution. Then, of course, they can have a go with it (never say
never! :-D), but no point in optimizing --neither the algorithm nor the
interface-- for such use cases.

Regards,
Dario

--=20
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


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