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.
Cheers,
Michael.
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Michael Schroeder mls@xxxxxxx
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