From: Rob Landley <rob@landley.net>
Organization: Boundaries Unlimited
To: Lee Revell <rlrevell@joe-job.com>
Subject: Re: [PATCH 0/4] linux-2.6-block: deactivating pagecache for benchmarks
Date: Mon, 5 Dec 2005 11:28:13 -0600
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Cc: Andrew Morton <akpm@osdl.org>, Dirk Henning Gerdes <mail@dirk-gerdes.de>,
       axboe@suse.de, linux-kernel@vger.kernel.org
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On Monday 05 December 2005 10:20, Lee Revell wrote:

> > > Caveats:
> > >
> > > a) Holds inode_lock for exorbitant amounts of time.
> >
> > Voluntary preemption point, maybe?
>
> I thin it's a bad idea, that would just encourage people to use this for
> anything other than debugging.  If you care about latency don't discard
> the page cache.
>
> The GNOME people have been asking for this for a while, in order to
> improve startup times, they would like a way to simulate a cold start
> without rebooting.

I was thinking that virtual environments (namely, User Mode Linux) could use 
this in conjunction with sys_punch to free up memory back to the host system.

> Lee

Rob
-- 
Steve Ballmer: Innovation!  Inigo Montoya: You keep using that word.
I do not think it means what you think it means.
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