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Date: Mon, 15 Apr 2013 12:42:17 +0000 (UTC)
From: "Nitay Joffe (JIRA)" <jira@apache.org>
To: giraph-dev@incubator.apache.org
Message-ID: <JIRA.12639258.1364365116858.167196.1366029737057@arcas>
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Subject: [jira] [Commented] (GIRAPH-592) YourKit profiling API for easy
 profiling of giraph
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    [ https://issues.apache.org/jira/browse/GIRAPH-592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13631687#comment-13631687 ] 

Nitay Joffe commented on GIRAPH-592:
------------------------------------

Still undergoing discussion, see https://reviews.apache.org/r/10147/. I'll post patch when it's ready. You want to comment on the review?
                
> YourKit profiling API for easy profiling of giraph
> --------------------------------------------------
>
>                 Key: GIRAPH-592
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-592
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Nitay Joffe
>            Assignee: Nitay Joffe
>
> Adds YourKit API with helpers to Giraph, to make it easy to profile with YourKit. No more having to attach to processes and have the user time things by hand. This allows us to profile specific parts of the code very easily.
> As an example this diff adds profiling to edge input loading.
> To use YourKit with Hadoop jobs you need to set parameters as follows:
> {code}
> -Dmapred.task.profile=true \
> -Dmapred.task.profile.maps=0-${numWorkers} \ 
> -Dmapred.task.profile.params=-agentpath:<path-to-yourkit.so>
> {code}
> Note if the YourKit agent is not passed in (not profiling), the calls I've added here have negligible effect.
> https://reviews.apache.org/r/10147/

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