From: Eli Zaretskii <eliz@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: profiler-report seems to be missing data?
Date: Thu, 16 Aug 2018 21:00:05 +0300 [thread overview]
Message-ID: <83wosqgpju.fsf@gnu.org> (raw)
In-Reply-To: <CAHV0hAhYY62GbLtA9s9AnxjQWS63vaHBfJeb5A8Oqich-ME3dw@mail.gmail.com> (message from Charlie Andrews on Thu, 16 Aug 2018 13:33:19 -0400)
> From: Charlie Andrews <andrews.charlie@gmail.com>
> Date: Thu, 16 Aug 2018 13:33:19 -0400
> Cc: help-gnu-emacs@gnu.org
>
> Sorry for the silly question: unless I'm changing some emacs-wide variable that might logically force some
> recomputation in those buffers (like changing the gutter after which characters on a given line are highlighted
> red, for example) or Emacs is under memory pressure, why would the number of buffers affect the time
> required for let to run?
When you bind a variable that automatically becomes buffer-local when
set, Emacs needs to make that variable buffer-local in every other
buffer you have, and that can take time if you have a lot of buffers.
Emacs used to do this even in dead buffers (those which were killed,
but not yet GCed), but we fixed that lately.
next prev parent reply other threads:[~2018-08-16 18:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-15 15:00 profiler-report seems to be missing data? Charlie Andrews
2018-08-15 18:46 ` Eli Zaretskii
2018-08-16 13:47 ` Charlie Andrews
2018-08-16 14:19 ` Eli Zaretskii
2018-08-16 15:32 ` Michael Heerdegen
2018-08-16 17:12 ` Charlie Andrews
2018-08-16 17:28 ` Eli Zaretskii
2018-08-16 17:33 ` Charlie Andrews
2018-08-16 18:00 ` Eli Zaretskii [this message]
2018-08-16 18:48 ` Michael Heerdegen
2018-08-16 18:59 ` Eli Zaretskii
2018-08-16 18:54 ` Michael Heerdegen
2018-08-16 22:47 ` Stefan Monnier
2018-08-17 15:36 ` Charlie Andrews
2018-08-19 5:06 ` Stefan Monnier
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