Re: Why navigating in Org mode is so slow in overview mode?

[Gregor Zattler <telegraph@gmx.net>]

Hi Nicolas,
* Nicolas Goaziou <mail@nicolasgoaziou.fr> [21. Jun. 2015]:
> Gregor Zattler <telegraph@gmx.net> writes:
>> - but there some hangs now and then.
> 
> Is it a complete freeze (i.e., you need to use C-g to get out of the
> loop) or a slowdown of a couple of seconds? 

It’s a slow down.

> The former is a bug. However, some changes in the buffer imply a massive
> loss of the cache (e.g., inserting a block clears cache in the whole
> section), so the next action can be slow since you need to fill it
> again, hence the slowdown.

Hmh.  Last time I was annoyed was when I wanted the cursor to
move down a few lines in the agenda: pressing „arrow down“ took
two seconds or some such before the cursor actually moved.

>> At that moment I cannot
>>   start the profiler.  If I start the profiler at the
>>   beginning of using this org file and stop it maybe hours later
>>   after something was slow: Would such report be helpful?
> 
> It might not give any useful information. However, the best way to know
> is to look at it.

OK I’ll start with profiler then.  Thanks, Gregor