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Re: Two performance notes from the outside world

From: C. Michael Pilato <cmpilato_at_collab.net>
Date: 2004-02-16 03:06:42 CET

Greg Hudson <ghudson@MIT.EDU> writes:

> Here are two specific problem areas I've heard of from a big open
> source project:
> * svn log -v on a revision with a huge changed-file list, such as an
> import. It takes a long time to compute the changed-path list,
> and the whole thing gets stored in memory. If we could make this
> streamy, it might improve perceived performance as well as memory
> usage on the server. There may also be inefficiences in the
> calculation of the list, though I haven't looked.

The calculation of the list is basically a cursor walk through the
'changes' table. But yes, the results are all slapped into a big ol'
in-memory hash.

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Received on Mon Feb 16 03:07:39 2004

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