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

[Phillip Lord]

I've been trying to do this, but it's hard. The problem is that Emacs
slowsdown and I have to keep typing until eventually it hangs. That can
take a long time during which I have an unusable emacs, with garabled
words and missing letters. And sometimes it doesn't hang.

Is there anything else that I can do debugging wise does not involve
waiting for a total hang?

Eli Zaretskii <eliz@gnu.org> writes:

>> From: phillip.lord@newcastle.ac.uk (Phillip Lord)
>> Cc: <monnier@iro.umontreal.ca>,  <20134@debbugs.gnu.org>
>> Date: Wed, 08 Apr 2015 18:08:28 +0100
>> 
>> 
>> Here is another backtrace.
>
> There's that xic_set_preeditarea and xcb_wait_for_event again, called
> as part of Emacs redisplaying and setting the cursor.  I don't
> understand why this would become progressively slower and slower
> during a session, but then I know nothing about XIC.
>
> What happens if, starting with this backtrace, you type "finish" until
> it stops showing the next frame up the call-stack -- which frame does
> it fail to leave from?