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https://issues.apache.org/jira/browse/DISPATCH-1389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16890179#comment-16890179
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ASF GitHub Bot commented on DISPATCH-1389:
------------------------------------------

kgiusti commented on pull request #541: DISPATCH-1389: optimize the 
STATE_IN_BODY codepath in qd_iterator_octet
URL: https://github.com/apache/qpid-dispatch/pull/541
 
 
   Minor change increases field parsing performance in general
   
   Single hop (best of 3 runs)
   master: 
       3.177: msgs sent=500000 msgs/sec=  157377.115
   patch:
       2.470: msgs sent=500000 msgs/sec=  202455.051
   
   Two hop:
   master:
     8.170: msgs sent=500000 msgs/sec=   61198.177
   
   patch:
     6.814: msgs sent=500000 msgs/sec=   73377.456
   
 
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> Optimize the parsing of message annotations
> -------------------------------------------
>
>                 Key: DISPATCH-1389
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1389
>             Project: Qpid Dispatch
>          Issue Type: Improvement
>            Reporter: Ken Giusti
>            Assignee: Ken Giusti
>            Priority: Major
>
> Parsing message annotations, especially on the inter router incoming link, 
> are quite expensive.
> For example, in a simple standalone router test the time it takes on average 
> (on my puny laptop) to receive a message and hand it off to the core is ~1 
> usec:
> TestRouterA: link MyReceiver count=500000 rx=1.094 
> Compare that time to the same operation performed on the inbound router link 
> on a two-hop router configuration:
> TestRouterB: link MyReceiver count=500000 rx=7.035 
> On average it's 7x slower.  Most of this time appears to be spent 
> manipulating inbound message annotations.
>  
> This Jira tracks work towards improving the performance of message annotation 
> processing.



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