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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DISPATCH-1389) Optimize the parsing of message annotations
Date Thu, 08 Aug 2019 13:16:00 GMT

    [ https://issues.apache.org/jira/browse/DISPATCH-1389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16902963#comment-16902963
] 

ASF subversion and git services commented on DISPATCH-1389:
-----------------------------------------------------------

Commit 717be609925646d0856e129c6760098e976a12f2 in qpid-dispatch's branch refs/heads/master
from Ken Giusti
[ https://gitbox.apache.org/repos/asf?p=qpid-dispatch.git;h=717be60 ]

DISPATCH-1389: optimize qd_iterator_advance, qd_iterator_ncopy and
qd_iterator_equal to use multi-byte operations when the iterator view
is in the raw data.

This closes #546


> 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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