emacs slow with large threads

David Edmondson dme at dme.org
Sat Jan 19 01:03:38 PST 2019

On Saturday, 2019-01-19 at 00:03:18 +00, Landry, Walter wrote:

> Hello Everyone,
> I am using the emacs frontend to notmuch.  It has mostly been a pleasant
> experience, but I am having a problem with large threads.  Essentially,
> when I try to view a large thread, the machine locks up for many
> minutes.  The problem seems very similar to these posts.
>   https://notmuchmail.org/pipermail/notmuch/2013/014811.html
>   https://notmuchmail.org/pipermail/notmuch/2015/020379.html
> I tried turning off html rendering by setting mm-text-html-renderer to
> nil.  That helped, but it is still taking at least 10 minutes to render
> a thread.  I killed it when I ran out of patience.
> The thread has 231 messages, and running
>   notmuch show thread:000000000000d637 | wc -l
> shows that it is 46918 lines long.  Running that on the command line is
> fast, taking 0.123 seconds.  As a comparison, I tried opening the thread
> with astroid.  It was not instantaneous, but it only took about 3
> seconds.
> I am guessing that the emacs mode is trying to process the result.  I
> can work around this a bit by opening individual messages with "C-u RET"
> instead of "RET".  But then I lose context.
> Is there anything else I can do to make this work?

Do things improve if you set notmuch-show-insert-text/plain-hook to nil?

Can you share the messages in the thread?

Sorry I'm not home right now, I'm walking into spiderwebs.

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