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https://issues.jboss.org/browse/JBSEAM-5075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tomas Remes updated JBSEAM-5075:
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Attachment: Response time
> Improve Seam2.3 performance
> ---------------------------
>
> Key: JBSEAM-5075
> URL: https://issues.jboss.org/browse/JBSEAM-5075
> Project: Seam 2
> Issue Type: Enhancement
> Components: Performance and Scalability
> Affects Versions: 2.3.0.Final
> Environment: AS 7.1.3.Final (EAP 6.0.1)
> Reporter: Tomas Remes
> Attachments: Response time
>
>
> I've run several performance (especially load) tests comparing Seam2.3 to
> Seam2.2. I am using modified numberguess example running on AS 7.1.3.Final
> (EAP 6.0.1). Major difference between those two versions is that Seam2.2 uses
> JSF-1.2 (Mojarra-1.2_15-b01-FCS) and Seam2.3 uses JSF-2.1 (Mojarra
> 2.1.13-jbossorg-1). The tests shows significantly worse results of Seam2.3
> release especially in response time values. Literally Seam2.3 reaches only
> about 50% of response time values in comparison to Seam2.2 version. In other
> words that is two times worse. Profiling shows following points, which can be
> IMHO improved:
> 1) Implementation of SeamVieHandler's restoreView method. This method
> currently allocates approximately 10x times more memory than related one from
> Seam2.2 (it uses FaceletViewHandler.restoreView). Removing (returning to
> Seam2.2 implementation) following lines from this method can bring
> performance improvement (I've already tried that):
> {noformat}
> UIViewRoot viewRoot =viewHandler.restoreView(ctx, viewId);
> if (viewRoot != null)
> {
> viewRoot.setViewId(viewHandler.deriveViewId(ctx,viewId));
> }
> {noformat}
> 2) Implementation of Contexts.isPageContextActive method. This also shows
> some regression when comparing memory allocation to related methods -
> ConversationPropagation.restoreConversationId and
> Manager.restoreConversation. IMHO this can be reimplemented somehow too.
> 3) Implementation of StatusMessages.instance() method. This also brings small
> regression in memory allocation.
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