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https://issues.apache.org/jira/browse/CLOUDSTACK-9348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15294424#comment-15294424
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ASF GitHub Bot commented on CLOUDSTACK-9348:
--------------------------------------------
Github user swill commented on the pull request:
https://github.com/apache/cloudstack/pull/1549#issuecomment-220735448
@rhtyd uggg... The first two builds on master after merging this back in
have both resulted in the `addHost` error. :( Let me know what you need to
troubleshoot this. I have a couple PRs I want to do a final round of testing
on, so I will try to get them tested and we will see if they also run into this
issue when I try to test them. If they do, I may have to revert again. I am
trying my best to get a bunch of the PRs that are close in, so I am pushing the
freeze date a bit (obviously). I will probably freeze over the weekend or
early next week. I would like to make sure we have this resolved though. I
don't want this to derail my final testing. I will launch a bunch more CI
right now and we will see how things go...
> 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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