On Wed, 29 Dec 2010, Jonathan Nieder wrote: > Package: dpkg-dev > Version: 1.15.9 > Severity: wishlist > > Thorsten Glaser wrote: > > > dpkg-architecture appears to be called rather often. > > It’s slow though… > > > > r...@ara0:~/T # time dpkg-architecture > > DEB_BUILD_ARCH=m68k > [...] > > 0m7.49s real 0m2.97s user 0m4.02s system > > > > The system is otherwise idle, and it’s the second call, so hot cache. > > > > r...@ara0:~/T # cat /proc/cpuinfo > > CPU: 68040 > [...] > > Debian unstable. Other tools might be similar. > > dpkg-parsechangelog is also about 3 seconds too slow in my experience. > > I am guessing (but have not checked) that most of the time is spent > loading Dpkg::* modules. Any hints for diagnosing this?
perl -d:Profile /usr/bin/dpkg-architecture less prof.out See man Devel::Profile and man Devel::DProf (for an alternative profiling tool). But I fear this bug is useless as such. The output of the profiler for dpkg-architecture does not show anything wrong here and it's far from taking so long... and for dpkg-parsechangelog, I already tried to optimize it somewhat and I'm unlikely to try harder myself. So unless you come up with concrete optimizations, a bug report saying "it's slow" is useless. Thorsten, can you generate the profiling data on your machine so that we have a better idea of how it runs for you? Cheers, -- Raphaël Hertzog ◈ Debian Developer Follow my Debian News ▶ http://RaphaelHertzog.com (English) ▶ http://RaphaelHertzog.fr (Français) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
