Re: Caching of object/libraries/files

[Daniel Jacobowitz <drow@false.org>]

On Thu, Mar 18, 2004 at 10:46:47AM -0800, Nick Savoiu wrote:
> Hi all,
> 
> I have a rather large project composed of a small driver executable and
> quite a few .so libraries that it uses.
> 
> When I invoke it with GDB, upon executing 'run' it takes quite a while for
> GDB to do it's thing (i.e. load symbols, whatever else it does) particularly
> since it does a lot of disk access.
> 
> I was thinking that, if I start a GDB session on this project, run it for a
> while then quit and immediately restart a similar session, then most of the
> files would be cached. However, I see the same amount of disk access for the
> second session when 'run' is invoked as for the first.
> 
> Any ideas why this is so? The GDB session itself uses about 340MB and I have
> 1GB RAM.

This is something that I've been meaning to fix for a long, long time. 
We unload all shared objects when the program exits; what we ought to
do is move them to a separate cache structure.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer