perfSONAR User Q&A and Other Discussion

[Szymon Trocha <>]

P.Heiligers pisze:
> Dear all,
>
> my name is Peter from DFN-NOC Stuttgart, we have a perfsonar RRDMA 3.2 
> installation running  on a Intel Xeon
> machine with debian linux.
>
> Installed is:
>
> ii  perfsonar-java-rrd-ma                                   
> 3.2                          perfSONAR Round Robin Database
>
> We are experiencing timeouts and long delays from PerfsonarUI and other 
> tools used by colleagues , accessing the RRDMA.
> Our RRDMA contains 740 interfaces right now. The Log data shown are in 
> response to a PerfsonarUI metrics query. As you see, requests are 
> serviced after more than 6 minutes. Almost any application is timed out 
> than.
> What is happening here, any idea ? A problem with the exist database ? 
> As one finds this in the log:
>
> 2009-11-03 18:52:58,640 %GEANT2-JAVA-RRD-MA.ERROR% 
> MetadataConfigurationStorageManager.executeQuery: Connection to xml 
> database failed: org.perfsonar.base.exceptions.PerfSONARException: 
> [error.common.storage.xmldb.query]: Can't perform XQuery: 
> java.lang.NullPointerException
>
> Are there simply too many interfaces in the system ?

Hi Peter,

The above error seems to indicate failed connection to eXist. Does it 
work if you try to connect directly via browser?

P.S. I know you didn't get the e-mail from the ML. You could use 
 next time I remember some problems in the 
past with the other adddress.
--
Szymon Trocha

Poznan Supercomputing & Netw. Center ::: NETWORK OPERATION CENTER
Tel. +48 618582022 ::: http://noc.man.poznan.pl