Date: Wed, 13 Feb 2008 15:46:10 +0100 From: Erik Cederstrand <erik@cederstrand.dk> To: Brooks Davis <brooks@freebsd.org> Cc: freebsd-performance@freebsd.org, kris@freebsd.org Subject: Re: Performance Tracker project update Message-ID: <47B302B2.30607@cederstrand.dk> In-Reply-To: <20080208151756.GA35423@lor.one-eyed-alien.net> References: <4796C717.9000507@cederstrand.dk> <20080123193400.N63024@fledge.watson.org> <4797A245.7080202@cederstrand.dk> <20080123202433.E63024@fledge.watson.org> <4797A802.8060509@FreeBSD.org> <47A0BFE7.4070708@cederstrand.dk> <20080130190000.GA18333@lor.one-eyed-alien.net> <47AC15A5.5020009@cederstrand.dk> <20080208151756.GA35423@lor.one-eyed-alien.net>
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Brooks Davis skrev: > On Fri, Feb 08, 2008 at 09:41:09AM +0100, Erik Cederstrand wrote: >> I finally got around to testing this, and with a combination of mtree >> comparing md5 hashes, bsdiff compacting changed files and hardlinking >> unchanged files I get a reduction in size from 256MB to 10MB. Pretty good, >> and the whole operation only takes a few minutes. > > Cool! > >> I have one peculiarity, though. I install python2.5 into the directory >> containing the build, and even though the python version has not changed, I >> still get mismatching md5 sums on every .pyo and .pyc file. Any thoughts on >> this? > > I'm not a python guru by any means, but I think .pyc files probably have data > about the .py they are generated from because there's some sort of > auto-generation available. It may be possible to not store them at all and > just generate them before you use them or add some magic build flags to cause > them to store some sort of cooked values. I'm not sure where the .pyo files > come from. As suggested in other posts, deleting .pyo and .pyc files gets me down to 6MB. Static libraries (.a files) in /usr/lib and /usr/local/lib still have mismatching MD5 sums even though no source code change warrants this. Can I do anything about that? Are static libraries even needed anymore? Erik
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