Re: Speeding up agenda display

[Carsten Dominik <carsten.dominik@gmail.com>]

On Jan 2, 2010, at 3:38 PM, Andrew J. Korty wrote:

> On Jan 2, 2010, at 02:50 , Carsten Dominik wrote:
>
>> You can shave off another .5 seconds by pressing the selection key
>> faster - Org spends 0.46 seconds to wait for your keypress :-)
>
> Good point. :-)
>
> I optimized things a bit more by caching skip positions and  
> schedule, deadline, and tag data for each point a skip function is  
> called in a hash.  An example hash value might be
>
>  (((due-soon . t) (started . nil) (tagged-for-home . t)) . skip- 
> position)
>
> These savings add up when you have several slightly differing  
> agendas in a block agenda.

Hi Andrew,

that is interesting.  I have been thinking about caching often
but always stopped implementing it because, being a plain text
system, there is always the possibility that thinks are being
changed behind the back of the cache.  How are you handling
updating the cache?

- Carsten