[jira] [Comment Edited] (GEODE-3716) Monitoring steal time in stats

["Charlie Black (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GEODE-3716?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16184566#comment-16184566 ] 

Charlie Black edited comment on GEODE-3716 at 9/28/17 6:05 PM:
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Here is a screenshot of this enhancement in action.   The main spike, in the beginning, is a test to set up some load on the host to see if it was suspect for steal time.   Then I let the host idle for a period of time.

The recording in vsd mirrors what would be seen in the traditional linux toolset vmstat and top.

!screenshot-2.png!






was (Author: charliemblack):
Here is a screenshot of this enhancement in action.   The main spike, in the beginning, is a test to set up some load on the host to see if it was suspect for steal time.   Then I let the host idle for a period of time.

!screenshot-2.png!





> Monitoring steal time in stats
> ------------------------------
>
>                 Key: GEODE-3716
>                 URL: https://issues.apache.org/jira/browse/GEODE-3716
>             Project: Geode
>          Issue Type: Improvement
>            Reporter: Charlie Black
>         Attachments: screenshot-2.png
>
>
> In virtualized deployments of Geode some latency issues can be mapped back to the hypervisor not giving the guest enough cycles.   For this improvement, Geode will capture stolen time as presented by the OS in the /proc/stat file for Linux.  Steal time represents the time the virtual processor is waiting to be scheduled on the physical processor.
> Geode already monitors several CPU fields and Geode will be adding in support to capture  STEAL time.



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