Re: [PATCH 2/3] vmscan: make mapped executable pages the first class citizen
- From: Wu Fengguang <fengguang wu intel com>
- To: gnome-list gnome org
- Cc: Nick Piggin <npiggin suse de>, Rik van Riel <riel redhat com>, Christoph Lameter <cl linux-foundation org>, Peter Zijlstra <peterz infradead org>, "xorg lists freedesktop org" <xorg lists freedesktop org>, LKML <linux-kernel vger kernel org>, "linux-mm kvack org" <linux-mm kvack org>, Andi Kleen <andi firstfloor org>, "minchan kim gmail com" <minchan kim gmail com>, KOSAKI Motohiro <kosaki motohiro jp fujitsu com>, Johannes Weiner <hannes cmpxchg org>, "tytso mit edu" <tytso mit edu>, Andrew Morton <akpm linux-foundation org>, Elladan <elladan eskimo com>
- Subject: Re: [PATCH 2/3] vmscan: make mapped executable pages the first class citizen
- Date: Wed, 20 May 2009 23:38:51 +0800
Hi list,
On Wed, May 20, 2009 at 10:56:07PM +0800, Wu Fengguang wrote:
> On Wed, May 20, 2009 at 10:47:31PM +0800, Andi Kleen wrote:
> > > > One scenario that might be useful to test is what happens when some
> > > > very large processes, all mapped and executable exceed memory and
> > >
> > > Good idea. Too bad I may have to install some bloated desktop in order
> > > to test this out ;) I guess the pgmajfault+pswpin numbers can serve as
> > > negative scores in that case?
> >
> > I would just generate a large C program with a script and compile
> > and run that. The program can be very dumb (e.g. only run
> > a gigantic loop), it just needs to be large.
> >
> > Just don't compile it with optimization, that can be quite slow.
> >
> > And use multiple functions, otherwise gcc might exceed your memory.
>
>
> Hehe, an arbitrary C program may not be persuasive..but I do have some
> bloated binaries at hand :-)
>
> -rwsr-sr-x 1 root wfg 36M 2009-04-22 17:21 Xorg
> lrwxrwxrwx 1 wfg wfg 4 2009-04-22 17:21 X -> Xorg
> -rwxr-xr-x 1 wfg wfg 39M 2009-04-22 17:21 Xvfb
> -rwxr-xr-x 1 wfg wfg 35M 2009-04-22 17:21 Xnest
I would like to create a lot of windows in gnome, and to switch
between them. Any ideas on scripting/automating the "switch window"
actions?
Thanks,
Fengguang
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