[Pharo-project] HelpBrowser takes too much time to open

Alexandre Bergel alexandre.bergel at me.com
Sat Apr 30 03:15:45 CEST 2011

> MessageTally time: [HelpBrowser open]   between 2 seconds in Cog and with a regular VM between 6 and 8....
> is there an easy way to improve it ?
> Alexandre, do you want another place where to put a cache like Metacello's currentVersion?   ;)

Sure. Easy. 

SystemHelp>>allSystemHelpPragmas takes time. When you open a browser, the method HelpBrowser>>open is called once and SystemHelp>>allSystemHelpPragmas twice. Easy to suspect that a cache is missing.

So, if you define 
	^ helpTopicCache ifNil: [ helpTopicCache := rootTopic asHelpTopic ]

and adapt HelpBrowser>>refresh you win 50% of execution time.

Here is it:
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Before this fix, I have:
[HelpBrowser open] timeToRun 
=> 6099

After the fix I have:
[HelpBrowser open] timeToRun 
=> 3094

Naturally, tests are kept green.


Alexandre Bergel  http://www.bergel.eu

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