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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9348) CloudStack Server degrades when a lot of connections on port 8250
Date Thu, 05 May 2016 18:00:16 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15272732#comment-15272732
] 

ASF GitHub Bot commented on CLOUDSTACK-9348:
--------------------------------------------

Github user swill commented on the pull request:

    https://github.com/apache/cloudstack/pull/1493#issuecomment-217227191
  
    In my lasts run, not a single test passed in the time frame something is wrong.  Previously
it was failing on 4/5, but this time it timed out without a single test passing of the 5...
    
    ```
    2016-05-05 19:46:17,659 DEBUG [utils.testcase.NioTest] (Time-limited test:) 0/5 tests
done. Waiting for completion
    2016-05-05 19:46:18,660 DEBUG [utils.testcase.NioTest] (Time-limited test:) 0/5 tests
done. Waiting for completion
    2016-05-05 19:46:19,660 DEBUG [utils.testcase.NioTest] (Time-limited test:) 0/5 tests
done. Waiting for completion
    2016-05-05 19:46:20,367 INFO  [utils.testcase.NioTest] (main:) Clients stopped.
    2016-05-05 19:46:20,367 INFO  [utils.testcase.NioTest] (main:) Server stopped.
    Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 300.095 sec <<<
FAILURE! - in com.cloud.utils.testcase.NioTest
    testConnection(com.cloud.utils.testcase.NioTest)  Time elapsed: 300.095 sec  <<<
ERROR!
    org.junit.runners.model.TestTimedOutException: test timed out after 300000 milliseconds
            at java.lang.Thread.sleep(Native Method)
            at com.cloud.utils.testcase.NioTest.testConnection(NioTest.java:146)
    ```


> 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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