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From: wmperry@aventail.com (William M. Perry)
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Subject: Re: Regular expression performance in emacs, number of cached regexps
Date: 18 May 1998 10:49:46 -0500
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Richard Stallman <rms@santafe.edu> writes:

> I can easily increase this cache size--the question is, how far should I
> increase it?
> 
> It was already increased to 20 in Emacs 20.  So I don't think I need to
> increase it now.  How about switching to Emacs 20?

  Well, as people are wont to say nowadays - memory is cheap, and so is
disk.  If I'm reading the code right, the regexp cache only takes 398 bytes
(worst case on a 64bit machine)... so 20 cache entries are only 7960 (~
7.75k).

  I would propose bumping this up to about 64k total (164 entries).  This
would help _alot_ with gnus and Emacs/W3.

-Bill P.