[Gllug] Re: What is the Gnome & KDE difference??

[Daniel P. Berrange]

On Wed, Mar 29, 2006 at 11:25:33PM +0100, Nix wrote:
> On Wed, 29 Mar 2006, Daniel P. Berrange stated:
> > Out of 450 MB of VIRT size of Epiphany:
> > 
> >  - 50 MB is locale-data (share by all apps)
> >  - 100 MB is ELF libs from /usr/lib & /lib (libc, Xfree, gtk, etc)
> >    mostly shared by all apps
> >  - 130 MB of heap/anonymous maps (genuine mozilla data bloat)
> >  - 65 MB of icons (shared across all desktop apps)
> >  - 55 MB of mozilla ELF libs (genuine mozilla code bloat)
> >  - 8 MB for VDSO page (placed by the OS, app has no choice in matter)
> > 
> > Ok, so that doesn't add up to 450 exactly, but you get the idea. Now would
> > I've not figured out yet is a way to identify exactly which memory pages are
> > shared vs private - I'm just guesstimating based on type of object. 
> 
> You might find it useful to kick up xrestop and scream at the amount of
> memory in the X server that your apps are blowing on pixmap caching.

I did look at xrestop initially, but it unfortunately does not provide
a way to capture the actual pixmaps associted with a client. So I wrote
a nasty LD_PRELOAD hack which overrode the XCreatePixmap & XFreePixmaps
method, dumping the pixmap to a TIFF file. A little post-processing and
I could visualize all pixmaps stored by mozilla at any time during the
course of a controlled test-run.

Dan.
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