Re: hash function optimization

[Dair G. <da...@re...>]

James W. Walker wrote:

>Just so you know that I'm not optimizing without profiling:  In a=20
>particular situation, picking with lots of complex objects, Shark=20
>showed that about 16% of the time was being spent in=20
>e3hash_find_node.  After the optimization that I just checked in,=20
>that went down to about 6%.

The perils of not posting for a while... :-)

This was actually one of the changes that came up when looking at
Roger's changes to the way instance data is found; the existing hash
function turned out to be really quite suboptimal (use of % generates an
expensive divide), and so replacing that was definitely a good idea.

I actually had it changed here too, but never got round to checking it
in - thanks! :-)


-dair
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