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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-9348) CloudStack Server degrades when a lot of connections on port 8250
Date Wed, 17 May 2017 04:40:04 GMT


ASF subversion and git services commented on CLOUDSTACK-9348:

Commit 02311c8bbe85210fae047ca57ff8322096fb0edf in cloudstack's branch refs/heads/4.9 from
[;h=02311c8 ]

Activate NioTest following changes in CLOUDSTACK-9348 PR #1549

The first PR #1493 re-enabled the NioTest but not the new PR #1549.

Signed-off-by: Marc-Aurèle Brothier <>

> CloudStack Server degrades when a lot of connections on port 8250
> -----------------------------------------------------------------
>                 Key: CLOUDSTACK-9348
>                 URL:
>             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:
> 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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