cloudstack-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
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, 06 May 2016 18:28:12 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15274515#comment-15274515
] 

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

Commit ea22869593f68a3a34b12aeb23c2bb6c34efd365 in cloudstack's branch refs/heads/master from
[~rohit.yadav@shapeblue.com]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=ea22869 ]

CLOUDSTACK-9348: Optimize NioTest and NioConnection main loop

- Reduces SSL handshake timeout to 15s, previously this was only 10s in
  commit debfcdef788ce0d51be06db0ef10f6815f9b563b
- Adds an aggresive explicit wakeup to save the Nio main IO loop/handler from
  getting blocked
- Fix NioTest to fail/succeed in about 60s, previously this was 300s
- Due to aggresive wakeup usage, NioTest should complete in less than 5s on most
  systems. On virtualized environment this may slightly increase due to thread,
  CPU burst/scheduling delays.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message