[chandler-users] why I use Chandler and what would make me stop

[Andi Vajda]

On Wed, 6 Feb 2008, Rick Rawson wrote:

> 5. Chandler does not always load slowly. First thing in the morning,
> it's always like cold molasses. If I close the application, and then reopen 
> it, it reloads faster and many times reloads very fast (<5 seconds). This 
> makes me suspicious that my antivirus software (Symantec) is doing an initial 
> virus check that takes a long time but is only done once per boot. Is that 
> possible?

After a cold boot, or after the OS caches are flushed, the extra startup 
price you're paying is paging all the shared libraries involved in the 
chandler process in. That and dynamic linking are the biggest culprits in 
the initial Chandler start after a reboot or cold start.

> 6. Today, I have had very little problem with slow response to mouse clicks. 
> I "purged" first thing this morning and that took between 10 and 12 minutes. 
> Yesterday, even multiple "purgings" did not rectify the slow mouse response 
> time. I mention this because the notice that I receive when I start to 
> "purge" promises to "make the application run faster." If there is anything 
> you would like for me to try, I'm game.

The Chandler repository keeps old versions of objects around until they're 
purged. "Purging" eliminates all these old versions of objects and compacts 
the databases to reclaim the holes the eliminated objects created. It makes 
no sense to repeatedly do it as there is no or little old data to purge over 
and over again. Once a week in a "normal" usage pattern should suffice. If 
you wait longer between purges it just takes longer.

Yes, purging has a good chance of making your Chandler faster but, as was
pointed out by others earlier, the times you're seeing are suspicious. Could 
it be, as you're suggesting, that your anti-virus software is being a pest 
here ? If you can, try to tell it to ignore or bypass your __repository__ 
directory. That directory is stored in your profile directory whose 
location is described here:
     http://chandlerproject.org/bin/view/Projects/ProfileDirectory

With the hardware you have, you should not be getting the kind of 
performance you're reporting.

Andi..