Gnome and task execution timing

[NoOp]

On 03/13/2009 03:33 PM, don fisher wrote:
> I am running a code to locate Near Earth Objects in astronomical CCD 
> images. One element of the pipeline is a package called sextractor, that 
> is also available as a deb package.
> 
> I am running Ubuntu 8.10.
> 
> My problem is that running gdm/gnome desktop appears to cost a factor of 
> two in execution time. I have an 8 processor 16 core Opteron system with 
> 32GB of ram. I would not have expected my application to be in 
> competition with the gnome/gdm. And I could seen no competition with 
> free or xosview tools. The code is executed from a remote machine via 
> ssh, so there is no activity required by the local X environment.
> 
> The following is the output from sextractor taken under gnome/gdm, then 
> rebooted under fvwm.

I'm not sure if this is related, but you might want to check:
https://bugs.launchpad.net/ubuntu/+source/sextractor

The one bug listed there seems to indicate that the .deb package was not
properly compiled:
https://bugs.launchpad.net/ubuntu/+source/sextractor/+bug/283142
<quote>
I was able to fix the problem simply by rebuilding the sextractor
package, *without any changes to the source*, with current hardy
compilers and build tools (I used pbuilder). My guess is that the i386
deb that is currently in the Ubuntu archive for hardy was miscompiled.
</quote>

And given that Intrepid uses the same package:
https://launchpad.net/ubuntu/+source/sextractor
that may be part of the problem?
[No clue as I've never used it. But it might be worth looking into &
filing a bug]