GNU bug report logs - #41029
Improve ido-switch-buffer performance when many buffers are open

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From: Arnold Noronha <arnold <at> tdrhq.com>
To: 41029 <at> debbugs.gnu.org
Subject: bug#41029: Improve ido-switch-buffer performance when many buffers are open
Date: Sat, 2 May 2020 08:40:55 -0700

[Message part 1 (text/plain, inline)]

Many of the buffer locals (in particular I think it's the
SYMBOL_FORWARDED types --- my terminoly may be off), appear to be O(n)
to bind, where n is the number of live buffers.

I tried to see if I can optimize that binding process directly, but
couldn't figure out a way to do it without changing current behavior,
so I opted to just optimize ido-switch-buffer directly.

After this patch, the performance is quite bearable at ~6000 buffers,
but still not ideal.

[0001-Avoid-binding-CASE-FOLD-SEARCH-in-tight-loop.patch (text/x-diff, attachment)]

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