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Posted to issues@activemq.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/01/05 18:19:02 UTC

[jira] [Commented] (ARTEMIS-1586) Reduce GC pressure due to String allocations on Core protocol

    [ https://issues.apache.org/jira/browse/ARTEMIS-1586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16313590#comment-16313590 ] 

ASF GitHub Bot commented on ARTEMIS-1586:
-----------------------------------------

GitHub user franz1981 opened a pull request:

    https://github.com/apache/activemq-artemis/pull/1752

    ARTEMIS-1586 Reduce GC pressure due to String allocations on Core protocol

    The commit contains:
    - a general purpose interner implementation
    - StringValue/SimpleString internrs specializations
    - TypedProperties keys/values string interning for SessionSendMessage decoding

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/franz1981/activemq-artemis decoder_interners

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/activemq-artemis/pull/1752.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1752
    
----
commit 2dd894c74f6dfe1e9d0579ced225a44661efcb99
Author: Francesco Nigro <ni...@...>
Date:   2018-01-04T14:22:05Z

    ARTEMIS-1586 Reduce GC pressure due to String allocations on Core protocol
    
    The commit contains:
    - a general purpose interner implementation
    - StringValue/SimpleString internrs specializations
    - TypedProperties keys/values string interning for SessionSendMessage decoding

----


> Reduce GC pressure due to String allocations on Core protocol
> -------------------------------------------------------------
>
>                 Key: ARTEMIS-1586
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1586
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>            Reporter: Francesco Nigro
>            Assignee: Francesco Nigro
>
> The core protocol produce a huge amount of StringValue/SimpleString instances during CoreMessage decoding of SessionSendMessages.
> Often these instances are the same during the lifetime of a client/server connection: providing efficient interners would help to reduce the GC pressure, increasing the broker capacity/scalability.



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