[seam-dev] Seam Startup Performance

Stuart Douglas stuart.w.douglas at gmail.com
Fri Jul 8 21:33:58 EDT 2011


There is some multi threaded stuff that can be done, and I am hoping to do it for AS 7.1.

We could also optionally have a setting that allows portable extension notifications to be fired asynchronously, although you would need to make sure that all PE's in your add were thread safe. This would provide a massive boost to startup time.

Stuart 



On 09/07/2011, at 10:39 AM, Jason Porter wrote:

> I've wondered about the start time of Seam 3 apps. Seems like it takes a while. 
> 
> Lincoln: you on 1.1.1.Final now?
> 
> I've also wondered if event notification could be done or is done in a multi threaded way. We start getting a lot of those first life cycle calls going to many archives and it probably starts taking a bunch of time. 
> 
> Sent from my iPhone
> 
> On Jul 8, 2011, at 18:25, "Lincoln Baxter, III" <lincolnbaxter at gmail.com> wrote:
> 
>> God, doing that in Forge would be a nightmare. Too many classes, too many beans. I just need weld to start up faster!
>> 
>> On Fri, Jul 8, 2011 at 7:45 PM, Dan Allen <dan.j.allen at gmail.com> wrote:! 
>> On Fri, Jul 8, 2011 at 19:27, Stuart Douglas <stuart.w.douglas at gmail.com> wrote:
>> Hi Guys,
>> 
>> I was just looking at the startup performance of the Seam 3 booking example on AS7, and I noticed that because the Seam 2 archives that it deploys are bean archives, it actually wastes quite a lot of time on startup registering Seam 3 classes as CDI beans that are never used.
>> 
>> It occurred to me that we can get around this by using a beans.xml that includes welds <scan> extension in beans.xml to prevent uneeded beans being registered we could significantly improve the performance and memory usage of Seam 3 apps.
>> 
>> Now that the ridiculous visibility and extensions in non-bean archive problems are resolved, I'm in favor of switching back to registering beans manually rather than using beans.xml. That seems like a performance enhancement that's portable, so that we don't suck if Weld isn't the provider.
>> 
>> But I agree we should do one of the two options. We'll be moving tests around in Seam to align the setup, so it seems like a good time to run tests with the updated bean registration strategy.
>> 
>> -Dan
>> 
>> -- 
>> Dan Allen
>> Principal Software Engineer, Red Hat | Author of Seam in Action
>> Registered Linux User #231597
>> 
>> http://www.google.com/profiles/dan.j.allen#about
>> http://mojavelinux.com
>> http://mojavelinux.com/seaminaction
>> 
>> 
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>> 
>> 
>> -- 
>> Lincoln Baxter, III
>> http://ocpsoft.com
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