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From "Tam Nguyen (JIRA)" <>
Subject [jira] [Commented] (WW-4790) struts upgrade cause more frequent garbage collection
Date Thu, 27 Apr 2017 15:07:04 GMT


Tam Nguyen commented on WW-4790:

with the two additional flags being set :

it seems the performance went down so we're just going to stick with
struts.ognl.enableExpressionCach = true 

This seems to help a lot, so thanks for confirming that we need this on. We will do a stress
test soon and see how it's compare with our baseline. My biggest question still remain opened
is why are we getting more garbage collection since we upgrade to ? 


> struts upgrade cause more frequent garbage collection 
> ---------------------------------------------------------------
>                 Key: WW-4790
>                 URL:
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.5.10
>         Environment: production
> tomcat 7.0.59
>            Reporter: Tam Nguyen
>             Fix For:
> since we upgraded our struts version from 2.1.18 to, our app has been doing
a lot of garbage collection, CPU are up more 30%-40%. We have 2 application that yield same
results after the upgrade. Stress test has almost double the time in performance. these are
the tech stack of our apps.
> struts
> spring 3.29
> tiles 3
> any insight would be helpful.
> Thank you
> Tam

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