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https://issues.apache.org/jira/browse/JAMES-2208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17128096#comment-17128096
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Rashid Mahmood commented on JAMES-2208:
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Is there any progress on upgrade to Netty 4?
NOTE at Netty website "As stated this will be our last 3.x release. 3.x is
considered EOL, please consider upgrading if you still use any 3.x release."
[https://netty.io/news/2016/06/29/3-10-6-Final.html]
There are a lot of performance and memory leak fixes in Netty 4, i am not sure
all those were also patched in 3.x.
We have performance requirements per Mail-Server instance like Higher Number of
TLS connections/sec. With current version at localhost, we see 30 TLS
connections per second with CPU all cores 100%. First profiling showed CPU was
occupied by Netty.
> upgrade netty to netty-all
> --------------------------
>
> Key: JAMES-2208
> URL: https://issues.apache.org/jira/browse/JAMES-2208
> Project: James Server
> Issue Type: Improvement
> Components: James Core
> Affects Versions: 3.0.0
> Reporter: Randymo
> Priority: Major
> Attachments: dependency-check-report.html
>
>
> James is currently using the netty dependency
> <dependency>
> <groupId>io.netty</groupId>
> <artifactId>netty</artifactId>
> <version>3.10.6.Final</version>
> </dependency>
> I think we should upgrade to the newer artifact
> <dependency>
> <groupId>io.netty</groupId>
> <artifactId>netty-all</artifactId>
> <version>4.1.16.Final</version>
> </dependency>
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