[MERGE] Use a dict to access stat cache information from dirstate.

[Robert Collins]

On Wed, 2007-10-24 at 17:01 +1000, Ian Clatworthy wrote:

> >> For a partial commit, perhaps we should only loop over those entries
> >> instead of all of them as well?
> > 
> > Yes, this would be a good future improvement. However, its worth noting
> > that the third of my performance figures *was* a partial commit, so the
> > time to populate the cache would seem to be tiny.
> 
> I did see that. So incremental commit is now 15s while commit of 1 file
> is now 10s. I wonder how many of those 10s is spent on O(n) tasks that
> could be O(1) instead?

Well, some :). callgrind gives pretty good hints at the moment.

> That aside, really well done on these improvements. The old commit
> performance vs the new commit performance are chalk and cheese.

:)

-Rob
-- 
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