perfSONAR User Q&A and Other Discussion

[Pedro Queirós <>]

Hi Nils,

thank you for your update. Any idea about my other questions?

Kind Regards,
Pedro Queirós

On Mon, Aug 6, 2012 at 4:06 PM, Nils Jacobson 
<>
 wrote:
> Hi Pedro,
>
> This is a known issue in the owamp graphs. When a user tries to retrieve
> graphs for duration longer than 2-3 days, then the cgi times out and throws
> an "Internal Server Error".
>
> Try using the arrows provided near the bottom of the graphs. Another way is
> to copy the url in a new window and modify the sTime and eTime parameters.
> (Please note that sTime and eTime are unix timestamps).
>
> Thank you,
>
> Nils Jacobson, Network Software Programmer
> Internet2
> 1000 Oakbrook Drive, Suite 300
> Ann Arbor, MI 48104
> office +1-734-352-7033 fax: +1-734-913-4255
>
> Visit our website: www.internet2.edu
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>
> From: Pedro Queirós 
> <>
>
> Date: August 6, 2012 7:19:28 AM EDT
> To: 
> 
> Subject: [perfsonar-user] Error generating OWAMP graphs and checking older
> measurements
> Reply-To: 
> 
>
> Hello,
>
> I'm having problems generating some OWAMP graphs. Sometimes it works,
> sometimes it doesn't, especially when trying to see the 1 week graphs.
> When it doesn't work, I get a 500 Internal Server Error - "The server
> encountered an internal error or misconfiguration and was unable to
> complete your request."
> I've checked the logs and I see a lot of:
>
> Mon Aug 06 10:16:38 2012] [error] [client 87.196.X.X] Use of
> uninitialized value in string eq at
> /opt/perfsonar_ps/serviceTest/cgi-bin/delayGraph.cgi line 151.,
> referer: http://X.X.X.X/serviceTest/index.cgi?eventType=owamp
>
> [Mon Aug 06 11:26:48 2012] [error] [client 87.196.X.X] Can't call
> method "getDocumentElement" on an undefined value at
> /opt/perfsonar_ps/serviceTest/cgi-bin/delayGraph.cgi line 279.,
> referer: http://X.X.X.X/serviceTest/index.cgi?eventType=owamp
>
> I'm guessing some kind of timeout is happening in the .cgi?
>
>
> Also, is there a way that I can graph older measurements? For example,
> a specific day or week in the past month. And is it possible to
> retrieve the one-way delay, loss and jitter values for a specific time
> window?
>
> Thank you for your time!
>
>
> Kind Regards,
> Pedro Queirós
>
>
> Internet2 Fall Member Meeting
> Sep 30-Oct 4, 2012 - Philadelphia, PA
> http://events.internet2.edu/2012/fall-mm/
>
>