perfsonar development work

[Guilherme Rhoden <>]

Hi Vedrin,
Vedrin Jeliazkov wrote:
> Hi Guilherme,
> 
> Guilherme Rhoden 
> <>
>  wrote:
> 
> 
>>Hi all,
>>
>>I've tried to deploy a java MA-RRD (snapshot 20060901) with 413
>>interfaces. The service is very very slow when I tried to get all the
>>metadata's of the defined interfaces with perfSONAR-UI.
> 
> 
> Did you configure the service to use eXist database as a storage for the RRD
> XML config? In case you have, did you configure the RRD MA service to access
> eXist via http, rather than via xmlrpc?
> 
The service is configured to use eXist and http access.

> If you haven't done the later or both of the above, please consider them.
> There's some performance gain with such settings, especially when you have a
> large RRD XML config, as in your case.
> 
> 
>>The XML configuration file has 1,4Mb and the java process is using more
>>that 330Mb of memory.
>>
>>Anyone has some experience with this number of interfaces?
> 
> 
> There are so many contributing factors, that it would be rather difficult to
> make comparisons. Here at ISTF we were forced to reduce the number of
> interfaces in our config, because of performance issues. But, our server 
> has a
> very limited amount of RAM (768 MB) and hosts LS and RRD-MA-Python in 
> addition
> to RRD-MA-Java. We found helpful the following JVM options in our particular
> case:
> 
> -Xms192m -Xmx192m -Xincgc
> 
The problem is with my cacti machine, it has only 512Mb of RAM and the
processor is AMD Athlon(tm) XP 2000+.

Which is the recommended hardware to implement java RRD-MA service with
around 1k interfaces?

> The options select a different (incremental) garbage collector than the
> default one and also make its work easier by setting the initial and maximum
> heap size to the same value.
> 
> 
>>The ESNET has 419 interfaces but perfSONAR-UI can't contact this MA.
> 
> 
> You probably have an old version of MA.conf in your perfsonarUI 
> installation.
> It should work if you update ESNET's line as follows:
> 
> ESNET,http://mea1.es.net:8080/axis/services/MeasurementArchiveService,NMWG2v2_netutil,"",utilization,utilization
> 
OK, the ESNET MA is much faster that my testing MA :).

Thanks,
Guilherme
> The most recent version of MA.conf is available on the wiki as a separate
> file:
> 
> http://wiki.perfsonar.net/jra1-wiki/index.php/PerfsonarUI
> 
> Kind regards,
> Vedrin
> 
>