Initial problems when using jmeter

[Tuomo Pyhälä <tp...@niksula.hut.fi>]

Hi,

I tried jmeter and for me it seems to be somewhat slow. I tried running it
on 1.3GHz PC (Running RH Linux 9.0, JDK 1.4.2) , and I was able to get
throughput ~100req/min. For me this seems to be quite small amount of
requests! The machine running jmeter seems to be running out of cpu (cpu
usage ~100%). The machine running the server had a plenty of idle cpu
power. I wonder, what might be the reason for the behavior?

I tried running jmeter on other machines also (different OS), and
observed similar behavior. The test plan included some https-requests,
cookie-manager and authentication manager. I checked the requests to
retrieve the images also and added some assertions. I think ~100req/s
excludes retrieved images but still, it is a low amount of requests as
the pages have maybe 5 images or so per page. What should I do to improve
the performance?


---------------------------------------------------------------------
To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: jmeter-user-help@jakarta.apache.org

Re: Initial problems when using jmeter

[Jordi Salvat i Alabart <js...@atg.com>]

1/ Try different java arguments. The default one "-Xincgc" is pretty 
poor. Something like this will probably improve things:
-Xms256m -Xmx256m -XX:NewSize=64m -XX:MaxNewSize=64m 
-XX:MaxLiveObjectEvacuationRatio=40 -XX:SurvivorRatio=8

2/ Avoid having your samplers download the images. Downloading the 
images requires parsing the HTML code, which is an expensive task.

Hope this helps,

Jordi.

En/na Tuomo Pyhälä ha escrit:
> Hi,
> 
> I tried jmeter and for me it seems to be somewhat slow. I tried running it
> on 1.3GHz PC (Running RH Linux 9.0, JDK 1.4.2) , and I was able to get
> throughput ~100req/min. For me this seems to be quite small amount of
> requests! The machine running jmeter seems to be running out of cpu (cpu
> usage ~100%). The machine running the server had a plenty of idle cpu
> power. I wonder, what might be the reason for the behavior?
> 
> I tried running jmeter on other machines also (different OS), and
> observed similar behavior. The test plan included some https-requests,
> cookie-manager and authentication manager. I checked the requests to
> retrieve the images also and added some assertions. I think ~100req/s
> excludes retrieved images but still, it is a low amount of requests as
> the pages have maybe 5 images or so per page. What should I do to improve
> the performance?
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> 
> 


---------------------------------------------------------------------
To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: jmeter-user-help@jakarta.apache.org