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

[Rick Rawson]

Andi,

Thank you for the info. Symantec AV provides a way of excluding specific 
files/folders and I presume that is a way of getting it to keep its 
sticky little fingers off the repository. I'll let you know what happens.

With some trepidation, I will resist purging for a few days.

Rick



Andi Vajda said the following on 2/6/2008 5:31 PM:
> 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..
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-- 
    Richard E. Rawson, DVM, PhD
Senior Lecturer
T8-008C Veterinary Research Tower
Department of Biomedical Sciences
College of Veterinary Medicine
Cornell University | Ithaca | NY | 14853
T 607-253-3748 | E: rer1 at cornell.edu <mailto:rer1 at cornell.edu>