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Re: [VM] VM suddenly becoming slow on accessing imap server


From: Robert Marshall
Subject: Re: [VM] VM suddenly becoming slow on accessing imap server
Date: Tue, 01 Apr 2014 11:34:09 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2.50 (gnu/linux)

The following message is a courtesy copy of an article
that has been posted to gnu.emacs.vm.info as well.

On Tue, Apr 01 2014, Uday Reddy <address@hidden> wrote:

> Robert Marshall writes:
>
>> When there's a long delay waiting for the messages to arrive emacs is
>> thrashing the CPU so it's not a network problem - or at least not one
>> where it's timing out on something.
>
> You can find what subprocesses are running inside Emacs by doing:
>
>   ESC-: (process-list)
>
> If there are run-away processes that shouldn't be there, you should either
> kill the Emacs session and restart, or you can use your elisp knowledge to
> `delete-process' all the offending subprocesses.  I don't know a better way.
>

I don't think it is anything to do with processes (there was IMAP SSL,
aspell and shell when I was having the problem) it looks to me as if the
getmail/savemail command is doing lots of elisp commands and taking
30+sec to return to the user. It's the foreground that is the issue
.. my session locks up (but C-g'able) until the get/save returns.

It is looking likely that this is a problem with the latest emacs build
rather than vm - I'm now trying running on a non-latest build and *so far* I
can't see the problem. I'll give it to the end of the day and if the bug
doesn't reappear (so then it would appear to be changes in the emacs src
trunk) I'll then need to try to get some test case together that I can
get an emacs bug report together and I'll try profiling it when the bug
is active.

Robert
-- 
La grenouille songe..dans son ch√Ęteau d'eau
Links and things http://rmstar.blogspot.com/



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