bug#20134: Acknowledgement (24.4.90; Emacs slowdown to eventual hang)

[Eli Zaretskii]

> From: phillip.lord@newcastle.ac.uk (Phillip Lord)
> Cc: <20134@debbugs.gnu.org>
> Date: Tue, 07 Apr 2015 16:28:23 +0100
> 
> > When Emacs becomes sluggish, does pressing and holding an arrow key
> > produces a slow response time for the first keypress, followed by more
> > or less normal response times for the next keypresses?
> 
> Nope. The lag is general. If I carry one for long enough, emacs hangs
> totally, but Emacs because unusable long before that point.

Then I guess the primary suspects are non-idle timers and
pre/post-command hooks.

> timer-list is a variable defined in `C source code'.
> Its value is
> ([nil 21795 62426 202965 60 ac-clear-variables-every-minute nil nil 1000])

Did you try running without this timer?

What about the pre/post-command hooks?