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From "Joe Smith (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AURORA-52) Track percentile stats about replicated log write latency
Date Mon, 27 Jan 2014 06:12:38 GMT

    [ https://issues.apache.org/jira/browse/AURORA-52?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13882594#comment-13882594
] 

Joe Smith commented on AURORA-52:
---------------------------------

Linking a dupe- AURORA-73: Break out storage latency and log latency into percentiles

> Track percentile stats about replicated log write latency
> ---------------------------------------------------------
>
>                 Key: AURORA-52
>                 URL: https://issues.apache.org/jira/browse/AURORA-52
>             Project: Aurora
>          Issue Type: Story
>          Components: Scheduler
>            Reporter: Bill Farner
>            Priority: Minor
>              Labels: O3
>
> We currently track the aggregate log append write latency, but this doesn't tell the
whole story.  We've encountered situations in production where kernel and disk issues can
lead to a long tail of high latency appends, which are buried in the aggregate.



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