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https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15295954#comment-15295954
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ASF GitHub Bot commented on CLOUDSTACK-9348:
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Github user rhtyd commented on the pull request:
https://github.com/apache/cloudstack/pull/1549#issuecomment-220893971
@swill I ran tests on latest master using packages:
http://packages.shapeblue.com/cloudstack/custom/master-latest/
I was able to deploy a zone with two KVM hosts and a mgmt server (on
centos6). I was able to use a cloudmonkey based script and it was able to add
multiple hosts without any error; here is the log and deploy script:
[cloudmonkey.log.txt](https://github.com/apache/cloudstack/files/276870/cloudmonkey.log.txt)
[deploy-kvm-adv.sh.txt](https://github.com/apache/cloudstack/files/276871/deploy-kvm-adv.sh.txt)
@swill I was then able to launch VMs, see systemvm connect and perform
regression tests. I'm unable to reproduce the issue now, I think master is
stable; in case you hit the `addHost` issue please send me the mgmgt server and
agent logs. Thanks.
> 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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