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Re: [Subclipse-users] Calculating Decoration - why so slow?

From: Mark Phippard <mphippard_at_collab.net>
Date: Thu, 8 Jan 2009 10:57:16 -0500

On Wed, Jan 7, 2009 at 7:28 PM, Tom Walter <tom.walter_at_hitwise.com> wrote:
> I've done as you suggest and timed it. It seems that a manual refresh on the
> project (with no modified files) takes about 5 mins, which is the same
> length of time as an svn switch or an svn branch/tag. This remains the same
> whether I run the refresh immediately prior to the svn switch or not.
> So clearly it is just that eclipse takes a long time to refresh my
> particular project. I'll see what I can do about that. I suspect it is
> because it is a large project accessed from windows over a samba connection
> to a linux fileserver.
> I think you've mentioned before that subclipse has to do the full refresh to
> ensure eclipse refreshes the hidden .svn directories. It would be great to
> see an enhancement to subclipse that could trigger eclipse to refresh only
> the files changed by svn (and the hidden .svn directories), without
> requiring a full project refresh. I think that would provide substantial
> performance increases for people who develop on remote servers, which is not
> uncommon. As it is, a 5 minute wait after any project level svn process
> makes subclipse impractical for use in this situation. Can I file a feature
> request?

It would not be difficult to only update the .svn folders but I would
be skeptical it would make that big of an improvement. We'd still
have to walk the tree and discover each of these folders and then
issue the Eclipse API to refresh each of these. It is conceivable
that the process of walking the tree could trigger Eclipse to see it
is out of date and refresh anyway, we have certainly run into cases
like that in the past with certain Eclipse API calls.

Unfortunately, there are no easy ways to test what kind of difference
it would make. If you want to setup an environment where you have
Subclipse checked out and run and test it in an Eclipse runtime, I
could send you patches to try and see what kind of difference it

Mark Phippard
Received on 2009-01-08 16:57:24 CET

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