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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DISPATCH-1389) Optimize the parsing of message annotations
Date Mon, 29 Jul 2019 19:31:00 GMT

    [ https://issues.apache.org/jira/browse/DISPATCH-1389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16895541#comment-16895541
] 

ASF GitHub Bot commented on DISPATCH-1389:
------------------------------------------

kgiusti commented on pull request #546: DISPATCH-1389: optimize qd_iterator_advance, qd_iterator_ncopy
and
URL: https://github.com/apache/qpid-dispatch/pull/546
 
 
   qd_iterator_equal to use multi-byte operations when the iterator view
   is in the raw data.
   
   Results of two-hop router test on my development system:
   
   current master: 
     5.165: msgs sent=500000 msgs/sec=   96797.306
   
   with this patch:
     4.844: msgs sent=500000 msgs/sec=  103228.321
   
   
 
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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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