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https://issues.apache.org/jira/browse/TS-3667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14573663#comment-14573663
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Eric Sproul commented on TS-3667:
---------------------------------
Initial indications are that this fixes our high CPU issue. Previous to this
patch we were at around 50% CPU usage on a dual hex-core system (24 hardware
threads). After the patch we are back to where we were with 4.2.x, about 2.5%.
> SSL Handhake read does not correctly handle EOF and error cases
> ---------------------------------------------------------------
>
> Key: TS-3667
> URL: https://issues.apache.org/jira/browse/TS-3667
> Project: Traffic Server
> Issue Type: Bug
> Components: SSL
> Reporter: Susan Hinrichs
> Assignee: Susan Hinrichs
> Attachments: ts-3667.diff
>
>
> Reported by [~esproul] and postwait.
> The return value of SSLNetVConnection::read_raw_data() is being ignored. So
> EOF and errors are not terminated, but rather spin until the inactivity
> timeout is reached. EAGAIN is not being descheduled until more data is
> available.
> This results in higher CPU utilization and hitting the SSL_error() function
> much more than it needs to be hit.
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