Re: [PATCH 2/3] vmscan: make mapped executable pages the first class citizen

On Wed, May 20, 2009 at 11:38 PM, Wu Fengguang<fengguang.wu@xxxxxxxxx> wrote:
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?

You can easily do this in KDE 3.5 with dcop(Desktop Communications Protocol)\

e.g.

$dcop kchmviewer-17502 KCHMMainWindow raise

will raise the window of my kchmviewer.


Thanks,
Fengguang

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