Performance Tracker project update

Brooks Davis brooks at
Wed Feb 13 15:46:10 UTC 2008

On Wed, Feb 13, 2008 at 03:46:10PM +0100, Erik Cederstrand wrote:
> 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?

I'd suggest checking with cperciva@ about those for freebsd-update.
Static libs are mostly not needed these days, but some are.

-- Brooks
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