Software Management call for RFEs

Michael Schroeder mls at
Fri May 31 09:23:52 UTC 2013

On Wed, May 29, 2013 at 08:33:16PM +0200, Florian Weimer wrote:
> Users sometimes misdiagnose issues, *especially* when complaining. 8-)
> I did some tests and cold cache performance tests on an old Debian 
> installation.  Performance with cold caches is more than adequate. 
> Full-text searches take about two seconds.  Package installation reaches 
> the confirmation prompt (after dependency resolution) in less than three 
> seconds, even for ridiculously complex tasks such as installing the entire 
> KDE desktop (365 additional packages on my test system).
> In contrast, on Fedora or RHEL systems, 30 seconds for dependency 
> resolution with a cold cache are common, plus around 6 seconds for loading 
> all the Python code for yum.  /usr/bin/time reports much more I/O than it 
> does non Debian (about ten times as much, as reflected in the wall clock 
> time).

If you want to do some measurements for depsolving without the python
overhead, you can try the "libsolv-demo" package (it's a subpackage
of libsolv, so it should be available for Fedora). It consists of
a single binary, "/usr/bin/solv", that is a little package manager
on top of libsolv.


Michael Schroeder                                   mls at
SUSE LINUX Products GmbH,  GF Jeff Hawn, HRB 16746 AG Nuernberg

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