perfsonar development work

[Roman Lapacz <>]

Nina Jeliazkova wrote:
> Hi Roman,
>   

Hi Nina

> We’ve successfully installed RRD-MA-svn-20060825 and we’re happy with the
> changes you’ve implemented, regarding the aggregated SetupDataRequests with
> keys (see attached response) – many thanks!
>
> During the installation we noticed that saxon8-dom.jar is missing from
> $TOMCAT/webapps/axis/WEB-INF/lib, resulting in many warnings in catalina.out.
> We downloaded http://prdownloads.sourceforge.net/saxon/saxonb8-7-3j.zip and
> after resolving this dependency problem we didn’t see any more
> warnings/errors.
>   

Did you update ant directory and use Ant script for downloading the 
libraries? Using Ant you should be able to get saxon library (ant -f 
build-rrdma.xml libs-rrdma) and after deploy operation (ant -f 
build-rrdma.xml deploy-rrdma) have it in Tomcat. I looked at 
catalina.out and I didn't observed warnings when I run my tests.



> There’s also some issue with the ant target for eXist DB initialization – it
> produces the following error:
>
> - - - 8< - - -
> ant -f build-rrdma.xml xmldb-init-rrdma
> Buildfile: build-rrdma.xml
>
> getresource-rrdma:
>
> xmldb-exist-rrdma:
>     [exist] Checking collection:
> http://selena.acad.bg:8680/exist/xmlrpc/db/rrdmaconfig
>
> __xmldb-init-rrdma:
>
> xmldb-init-rrdma:
>
> getdbroot-rrdma:
>
> get-xmldb-collection:
>
> xmldb-collection-rrdma:
>    [create] Database driver already registered.
>    [create] Created collection /db/rrdmaconfig
>
> xmldb-store-rrdma:
>     [store] Database driver already registered.
>
> BUILD FAILED
> /usr/local/perfSONAR-1.0/ant/rrdma/rrdma-exist-xmldb-targets.xml:148: The
> following error occurred while executing this line:
> /usr/local/perfSONAR-1.0/ant/rrdma/rrdma-exist-xmldb-targets.xml:100: XMLDB
> exception caught:
>
> Total time: 7 seconds
> - - - 8< - - -
> The workaround was to use the same target from an older service release
> (2006-05-23), which works fine.
>   

Hmm, I don't have such errors (the problem might be in Ant scripts which 
are not updated).


> We also compared MetadataKeyRequest and SetupDataRequest (without key)
> processing time in RRD-MA-perfSONAR-1.0 vs. RRD-MA-svn-20060825. There’s some
> improvement in MetadaKeyRequest’s response time, but also a noticeable slow
> down in SetupDataRequest’s processing in the svn version, when compared to
> RRD-MA-perfSONAR-1.0. The later finding was surprising – we expected quite the
> opposite in fact. The settings of the two services were identical, except for
> the access method to eXist (xmlrpc for the former, http for the later) and the
> required modification in the XML config file regarding eventType. We also made
> an attempt to configure the svn version to use xmlrpc instead of http, but in
> this case the service was unable to connect to the eXist DB. However, the http
>   

Did you have correct URL of xmldb in service.properies?


Roman

> method is expected to improve RRD MA performance, so probably the bottleneck
> should be searched elsewhere.
>
> We decided to downgrade ISTF’s RRD MA to perfSONAR-1.0 for the time being,
> while the above mentioned problems are being investigated/resolved and a
> snapshot/release, which delivers the expected performance improvements and new
> features, becomes available.
>
> Best regards,
> Nina
>
>