[Devel] Re: [RFC][PATCH 2/7] RSS controller core

[Herbert Poetzl]

On Mon, Mar 12, 2007 at 03:25:07PM +0530, Balbir Singh wrote:
> > doesn't look so good for me, mainly becaus of the
> > additional per page data and per page processing
> >
> > on 4GB memory, with 100 guests, 50% shared for each
> > guest, this basically means ~1mio pages, 500k shared
> > and 1500k x sizeof(page_container) entries, which
> > roughly boils down to ~25MB of wasted memory ...
> >
> > increase the amount of shared pages and it starts
> > getting worse, but maybe I'm missing something here
> >
> > > We need to decide whether we want to do per-container memory
> > > limitation via these data structures, or whether we do it via
> > > a physical scan of some software zone, possibly based on Mel's
> > > patches.
> >
> > why not do simple page accounting (as done currently
> > in Linux) and use that for the limits, without
> > keeping the reference from container to page?
> >
> > best,
> > Herbert
> >
> 
> Herbert,
> 
> You lost me in the cc list and I almost missed this part of the
> thread. 

hmm, it is very unlikely that this would happen,
for several reasons ... and indeed, checking the 
thread in my mailbox shows that akpm dropped you ...

--------------------------------------------------------------------
Subject: [RFC][PATCH 2/7] RSS controller core
From: Pavel Emelianov <xemul at sw.ru>
To: Andrew Morton <akpm at osdl.org>, Paul Menage <menage at google.com>,
       	Srivatsa Vaddagiri <vatsa at in.ibm.com>,
       	Balbir Singh <balbir at in.ibm.com>
Cc: containers at lists.osdl.org,
       	Linux Kernel Mailing List <linux-kernel at vger.kernel.org>
Date: Tue, 06 Mar 2007 17:55:29 +0300
--------------------------------------------------------------------
Subject: Re: [RFC][PATCH 2/7] RSS controller core
From: Andrew Morton <akpm at linux-foundation.org>
To: Pavel Emelianov <xemul at sw.ru>
Cc: Kirill at smtp.osdl.org, Linux at smtp.osdl.org, containers at lists.osdl.org,
       	Paul Menage <menage at google.com>,
       	List <linux-kernel at vger.kernel.org>
Date: Tue, 6 Mar 2007 14:00:36 -0800
--------------------------------------------------------------------
that's the one I 'group' replied to ...

> Could you please not modify the "cc" list.

I never modify the cc unless explicitely asked
to do so. I wish others would have it that way
too :)

best,
Herbert

> Thanks,
> Balbir
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