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https://issues.apache.org/jira/browse/QPID-3883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13222801#comment-13222801
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Andrew Stitcher commented on QPID-3883:
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These most recent changes improve the throughput for 1k messages to just under
100k msg/s and similar for 300 byte msgs (on my laptop at least)
> Using application headers in messages causes a very large slowdown
> ------------------------------------------------------------------
>
> Key: QPID-3883
> URL: https://issues.apache.org/jira/browse/QPID-3883
> Project: Qpid
> Issue Type: Improvement
> Components: C++ Broker, C++ Client
> Affects Versions: 0.14
> Reporter: Andrew Stitcher
> Assignee: Andrew Stitcher
>
> Messages that have application headers have a very high overhead compared to
> messages that don't have application headers.
> There are multiple causes of this problem:
> * Messages are copied unnecessarily in the client code
> * Encoding/decoding FieldTables is inefficient
> * Encoding/decoding FieldTables is done unnecessarily
> * Copying FieldTables is inefficient
> * The mapping of Variants to the current underlying FieldTable implementation
> may be inefficient
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