[
https://issues.apache.org/jira/browse/HADOOP-15811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16635683#comment-16635683
]
Daryn Sharp commented on HADOOP-15811:
--------------------------------------
[~xiaochen], due to time constraints (and that we aren't running the kms via
embedded jetty), do you want to help integrate these changes?
> Optimizations for Java's TLS performance
> ----------------------------------------
>
> Key: HADOOP-15811
> URL: https://issues.apache.org/jira/browse/HADOOP-15811
> Project: Hadoop Common
> Issue Type: Bug
> Components: common
> Affects Versions: 1.0.0
> Reporter: Daryn Sharp
> Priority: Major
>
> Java defaults to using /dev/random and disables intrinsic methods used in hot
> code paths. Both cause highly synchronized impls to be used that
> significantly degrade performance.
> * -Djava.security.egd=file:/dev/urandom
> * -XX:+UseMontgomerySquareIntrinsic
> * -XX:+UseMontgomeryMultiplyIntrinsic
> * -XX:+UseSquareToLenIntrinsic
> * -XX:+UseMultiplyToLenIntrinsic
> These settings significantly boost KMS server performance. Under load,
> threads are not jammed in the SSLEngine.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
