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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARTEMIS-1476) HdrHistogram support on verbose SyncCalculation
Date Tue, 24 Oct 2017 16:07:05 GMT

    [ https://issues.apache.org/jira/browse/ARTEMIS-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16217157#comment-16217157
] 

ASF GitHub Bot commented on ARTEMIS-1476:
-----------------------------------------

Github user michaelandrepearce commented on the issue:

    https://github.com/apache/activemq-artemis/pull/1605
  
    @franz1981 i really like the ability to get a histogram of the sync test so you can see
the percentiles of the disk performance from activemq's view. I do share some concerns with
@clebertsuconic that it is quite a re-write in the logic, this is quite a core tool to get
the journal settings right, i know @clebertsuconic spent a lot of time with us previously
getting it to work and fix issues. 
    
    Have we an ability to validate the result is the same before and after this change? e.g.
some sort of test?


> HdrHistogram support on verbose SyncCalculation
> -----------------------------------------------
>
>                 Key: ARTEMIS-1476
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1476
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>          Components: Broker
>            Reporter: Francesco Nigro
>            Assignee: Francesco Nigro
>
> The SyncCalculation::syncTest could benefit of [HdrHistogram|http://hdrhistogram.org/]
support to represent the write latencies percentile distribution while using it as a CLI command
(ie through the perf-journal command).



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