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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ROCKETMQ-91) Reduce lock granularity for putMessage
Date Thu, 25 May 2017 12:37:04 GMT

    [ https://issues.apache.org/jira/browse/ROCKETMQ-91?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16024673#comment-16024673
] 

ASF GitHub Bot commented on ROCKETMQ-91:
----------------------------------------

Github user coveralls commented on the issue:

    https://github.com/apache/incubator-rocketmq/pull/57
  
    
    [![Coverage Status](https://coveralls.io/builds/11685815/badge)](https://coveralls.io/builds/11685815)
    
    Coverage increased (+0.2%) to 38.626% when pulling **0076cdb715600f9c567118cefef76bd6d1a6dcd9
on dongeforever:up_tps** into **c0fe02e1c6a0afd516c1323c8b5808fd7ddad72e on apache:develop**.



> Reduce lock granularity for putMessage
> --------------------------------------
>
>                 Key: ROCKETMQ-91
>                 URL: https://issues.apache.org/jira/browse/ROCKETMQ-91
>             Project: Apache RocketMQ
>          Issue Type: Improvement
>    Affects Versions: 4.1.0-incubating
>            Reporter: dongeforever
>            Assignee: dongeforever
>             Fix For: 4.1.0-incubating
>
>
> CommitLog putMessage has a lock as:
> lockForPutMessage()
> ....
> releasePutMessageLock()
> The logic inside the lock includes two main operations:
> 1 encode the message
> 2 write to the PageCache.
> However, we can take the first operation(encode message) out from the lock to achieve
better performance.



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