[weld-issues] [JBoss JIRA] Commented: (WELD-522) Weld makes my Java SE app startup time >100x slower

Mon May 17 10:15:06 EDT 2010

    [ https://jira.jboss.org/browse/WELD-522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12530986#action_12530986 ] 

Morten Christensen commented on WELD-522:
-----------------------------------------

I also suspect it to be the scanner + java reflection code in Weld. I will do some profiling on this when we have changed the scanner in Weld SE. If my assumption is correct, I guess we could easily fix this my letting users configure the names of all the classes/interfaces that weld should take an interest in (f.x as just a plain list of qualified names in a text file like services in Java 6). I would love to have this feature.

> Weld makes my Java SE app startup time >100x slower 
> ----------------------------------------------------
>
>                 Key: WELD-522
>                 URL: https://jira.jboss.org/browse/WELD-522
>             Project: Weld
>          Issue Type: Bug
>    Affects Versions: 1.0.1.Final
>         Environment: Java 6, Weld 1.01 SE + lots of jars on the classpath
>            Reporter: Morten Christensen
>
> Booting my Java SE app without weld takes << 1s BUT the 1 line for initializing weld to autowire my app takes at least 4-5 seconds. 
> My app is not so big and consist of ~20-30 singletons that must be wired + various other non-weld stuff. I have lots of stuff on my classpath so I suspect that could be why weld is going crazy. 
> I guess this could be improved if I can have weld limited to work only inside my own jar and/or only work with specific classes/packages.
> P.S. With breakpoints enabled in a debugger and a bit of unluck, I was even able to have welds initialization to take ~ 5 minutes one day (reduced to seconds again after I removed all breakpoints though).

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