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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9348) CloudStack Server degrades when a lot of connections on port 8250
Date Fri, 20 May 2016 15:22:13 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15293527#comment-15293527
] 

ASF subversion and git services commented on CLOUDSTACK-9348:
-------------------------------------------------------------

Commit 570b676b1fd9bb932825e43f1844e147b1ddf7f6 in cloudstack's branch refs/heads/master from
[~williamstevens@gmail.com]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=570b676 ]

Merge pull request #1549 from shapeblue/nio-fixagain-singlepr

CLOUDSTACK-9348: NioConnection improvementsReopened PR with squashed changes for a re-review
and testing after https://github.com/apache/cloudstack/pull/1493 and sub-sequent PRs got reverted

* pr/1549:
  CLOUDSTACK-9348: NioConnection improvements

Signed-off-by: Will Stevens <williamstevens@gmail.com>


> CloudStack Server degrades when a lot of connections on port 8250
> -----------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9348
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9348
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Rohit Yadav
>            Assignee: Rohit Yadav
>             Fix For: 4.9.0
>
>
> An intermittent issue was found with a large CloudStack deployment, where servers could
not keep agents connected on port 8250.
> All connections are handled by accept() in NioConnection:
> https://github.com/apache/cloudstack/blob/master/utils/src/main/java/com/cloud/utils/nio/NioConnection.java#L125
> A new connection is handled by accept() which does blocking SSL handshake. A good fix
would be to make this non-blocking and handle expensive tasks in separate threads/pool. This
way the main IO loop won't be blocked and can continue to serve other agents/clients.



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