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Re: [O] still seeing semi-regular lockups

From: Daimrod
Subject: Re: [O] still seeing semi-regular lockups
Date: Tue, 20 May 2014 17:55:17 +0900
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

Eric Abrahamsen <address@hidden> writes:

> On 05/19/14 23:21 PM, Daimrod wrote:
>> Daimrod <address@hidden> writes:
>>> I have also semi-regular lockup with org-mode. I have opened a bug on
>>> debbugs and here is what Stefan told me to try to debug this:
>>>> You can try `debug-on-event'.
>>>> There's jit-lock-debug-mode but it doesn't disable inhibit-quit.
>>>> So you'll need to additionally use
>>>>    (advice-add 'jit-lock--debug-fontify :around
>>>>      (lambda (fun &rest args)
>>>>        (with-local-quit (apply fun args))))
>>>> Of course sometimes this doesn't work because jit-lock-debug-mode
>>>> changes the way things are executed and the bug may not manifest itself
>>>> any more, but it's worth a try.
>>>> Another source of info is to
>>>>   M-x trace-function RET org-adaptive-fill-function RET
>>>>   M-x trace-function RET org-element-at-point RET
>>>>   M-x trace-function RET org-element--cache-sync RET
>>>>   M-x trace-function RET org-element--cache-process-request RET
>>>> Then reproduce the hang, then break the hang somehow (maybe with the
>>>> jit-lock-debug hack above, or maybe with debug-on-event, or with C-g C-g
>>>> C-g, ...), then look at the *trace..* buffer.
>>> I'll try to see what I can find this week end and report back.
>> Ok, so the good news is the `debug-on-event' trick works. If you got a
>> lockup, you can get a classic elisp backtrace by sending the SIGUSR2 to
>> the Emacs process.
>> The bad news is that I don't know yet how to reproduce the lockup. It
>> seems to happen mostly (if not only) when I use org-mode +
>> visual-line-mode + adaptive-wrap-prefix-mode + an input-method like
>> latin-postfix.
>> And it probably has to do with the cache mechanism. I'll try to
>> reproduce it with the cache disabled but it hard to test because, as I
>> said, I don't know how to reproduce it yet.
>> I'll keep testing and see if I can reproduce it reliably.
>> Stay tuned!
> Of course I haven't gotten a single lock-up since reporting in last time...


Do you have a similar setup? That is visual-line-mode,
adaptive-wrap-prefix-mode, input-method?


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