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From "Nitay Joffe (JIRA)" <>
Subject [jira] [Commented] (GIRAPH-592) YourKit profiling API for easy profiling of giraph
Date Mon, 15 Apr 2013 12:42:17 GMT


Nitay Joffe commented on GIRAPH-592:

Still undergoing discussion, see 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:
>             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:<>
> {code}
> Note if the YourKit agent is not passed in (not profiling), the calls I've added here
have negligible effect.

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