Re: [Vserver] Resource minimums?

From: Herbert Poetzl <herbert_at_13thfloor.at>
Date: Tue 31 Jan 2006 - 00:32:23 GMT
Message-ID: <20060131003223.GD3299@MAIL.13thfloor.at>

On Mon, Jan 30, 2006 at 03:02:10PM -0700, Lares Moreau wrote:
> Is there an existing mechanism to provide a minimum resource
> (primarily CPU) to any giving context? Similar to the way network
> providers give you 5Mbit/s, but allow burstable bandwidth on demand to
> the max of your network interface or available network.

yes, that's what the hard cpu scheduler allows
you to do, assign a 'fixed' amount of tokens per
time unit to each context, but also allow for
bursts after a time of quiescence ...

> In the context of VServer, allocate a guaranteed minimum resource, but
> allow resources to be 'burstable' to 100% of the native host system.
> Further, set a maximum 'burstable' limit, of say 90%. and 'reserve'
> 10% for host system alone.

this is done with the newer devel scheduler on
a per cpu basis ... if you get the numebrs right
you should be able to do that ...

HTH,
Herbert

> Example table
> =============
> context guar-min burst-max
> ------- -------- ---------
> host 10% 100%
> vs1 25% 85%
> vs2 50% 85%
> vs3 15% 85%
> ------- -------- ----------
> total 100% N/A
>
>
> Ideas?
>
> -Lares
>
> --
> Lares Moreau <lares.moreau_at_gmail.com> | LRU: 400755 http://counter.li.org
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