Re: [GeoNetwork-devel] Challenges of Geonetwork CSW performance for concurrent requests

[Kai L. <kl...@gm...>]

> 
> Can you provide more information about the server config and the 
> requestssend?

We stopped the geonetwork just now for another test.
Could you please do that test again? 
Our server config as below: 
CPU: 2*4 2.33G, 
Memory: 16G,
OS: RED HAT Enterprise 4.0
Java version: 1.6.0_20


> I tried with JMeter using this request with the server you provide:
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
>  <env:Body>
>    <csw:GetRecords xmlns:csw="http://www.opengis.net/cat/csw/2.0.2"
> xmlns:ogc="http://www.opengis.net/ogc" maxRecords="10"
>         outputFormat="application/xml" outputSchema="
> http://www.opengis.net/cat/csw/2.0.2"
>         resultType="results" service="CSW" version="2.0.2">
>      <csw:Query typeNames="csw:Record">
>        <csw:ElementSetName>full</csw:ElementSetName>
>        <csw:Constraint version="1.1.0">
>          <ogc:Filter
>              xmlns:gml="http://www.opengis.net/gml">
>        <ogc:PropertyIsLike escape="\" singleChar="_" wildCard="%">
>          <ogc:PropertyName>AnyText</ogc:PropertyName>
>          <ogc:Literal>%water%</ogc:Literal>
>        </ogc:PropertyIsLike>
>          </ogc:Filter>
>        </csw:Constraint>
>      </csw:Query>
>    </csw:GetRecords>
>  </env:Body>
> </env:Envelope>
> 
> And got these results:
> 
> 1 thread/40 repeats: request average 0.57 s
> 20 threads/10 s ramp period/10 repeats: request average 1.3 s
> 100 threads/10 s ramp period/10 repeats: request average 8 s
> 
> the last is a bit high, but not as high as 83 s. If you can provide 
> thequeries used should be helpful.

I send the "get" request like below:
http://clearinghouse.cisc.gmu.edu/srv/en/csw?Service=CSW&Version=2.0.2&Request=GetCapabilities

http://clearinghouse.cisc.gmu.edu/srv/en/csw?Service=CSW&Version=2.0.2&Request=GetRecordById&ID=USGS_Map_MF-2337

> Also for 2.6 version (avalaible in august) some improvements in lucene
> indexes have been done, so hopefully the search times will benefit.


I used the geonetwork(6059) from trunk and the lucene is 2.9.2.

Thanks and Best Regards,

Kai


> Regards,
> Jose Garcia
> 
> 
> On Wed, Jun 23, 2010 at 10:29 PM, Kai Liu <kl...@gm...> wrote:
> 
> > Hi all,
> > We set up a clearinghouse based on GeoNetwork opensource2.4.3 (
> > http://clearinghouse.cisc.gmu.edu/geonetwork ). About 26K records 
> have> been ingested into the clearinghouse.
> >
> > When 1 CSW request was sent to the clearinghouse, the time to get 
> the> response is 2.6 seconds.
> >
> > Now I test the performance when 100 CSW requests are sent to the
> > clearinghouse concurrently and get the average is 83 seconds.
> >
> > The average response time (83s) is much longer than sending only 
> 1 request.
> > Is it normal?
> > Thanks,
> >
> >
> > Kai
> > Joint Center for Intelligent Spatial Computing
> > 703-395-2337
> >
> >
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>