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https://issues.apache.org/jira/browse/TS-3413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14338410#comment-14338410
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Susan Hinrichs commented on TS-3413:
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This issue was discovered while investigating TS-3405. The original discussion
is there.
> High CPU utilization when processing Http/2 traffic
> ---------------------------------------------------
>
> Key: TS-3413
> URL: https://issues.apache.org/jira/browse/TS-3413
> Project: Traffic Server
> Issue Type: Bug
> Components: HTTP/2, Performance
> Reporter: Susan Hinrichs
>
> This was discovered while tracking the segmentation fault in TS-3405 and the
> original discussion is there.
> Running ATS in forward transparent mode with Http/2 support enabled. After a
> few page views, ATS gets into a state where it is consistently using more
> than 100% CPU. I think what is happening is that the origin server is closing
> the connection (we get a TS_EVENT_VCONN_EOS in FetchSM). FetchSM sends a
> BODY_DONE to Http2ClientSession but the http_vc (origin socket?) is never
> closed, so with each poll interval the EOS is reported again and again.
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