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Posted to issues@trafficserver.apache.org by "Leif Hedstrom (JIRA)" <ji...@apache.org> on 2013/05/03 19:20:20 UTC

[jira] [Commented] (TS-1381) Performance of server intercept without Content-Length is poor

    [ https://issues.apache.org/jira/browse/TS-1381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13648587#comment-13648587 ] 

Leif Hedstrom commented on TS-1381:
-----------------------------------

Note that is probably a general case for all transforms too, who also depend on the chunked transform.
                
> Performance of server intercept without Content-Length is poor
> --------------------------------------------------------------
>
>                 Key: TS-1381
>                 URL: https://issues.apache.org/jira/browse/TS-1381
>             Project: Traffic Server
>          Issue Type: Improvement
>          Components: HTTP
>            Reporter: Leif Hedstrom
>             Fix For: 3.5.0
>
>
> When using a server intercept plugin, if the plugin is unable (for whatever reason) to inject a Content-Length header, we perform chunked encoding on the body. This turns out to be pretty slow, I'm seeing at least 5-8x slowdown doing this chunking, vs simply setting a CL: header.
> The reason I'm filing this is because for certain server intercept plugins, such as an fcgi plugin, this could be bad for performance. I can see that there would be some overhead doing the chunking, but 800% seems very steep.

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