On Donnerstag, 10. April 2008, Ben Collins-Sussman wrote:
> Try using subversion
> with a 700MB source tree; running 'svn status' takes minutes to crawl
> the tree (along with commits and updates).
>
> > And having the metadata localized allows to do wierd things like
> > manually merge WC temporarily, or easily take a smaller piece of the WC
> > and move it elsewhere.
>
> That's what we've been telling ourselves for 8 years; it turns out
> that nobody actually ever breaks working copies into small portable
> pieces. And the price we pay for scattered metadata is huge.
I just want to chime in with some hard data for the interested: FSVS uses a
single file for most of the needed data (all that's needed for "status"), and
it's bit faster.
See here for an example:
http://fsvs.tigris.org/source/browse/fsvs/trunk/fsvs/doc/PERFORMANCE?rev=972&view=markup
This is when a single file (sorted by inode-number) is read, the entries
lstat()ed in inode order, and no keyword substitution is possible (so that a
size change is immediately seen as changed data).
Regards,
Phil
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Received on 2008-04-10 07:04:52 CEST