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From Kostas Papadopoulos <kos...@methodosit.com.cy>
Subject Re: GUI getting slower?
Date Wed, 03 Apr 2013 13:04:55 GMT

Hi Philippe,

Thanks for the response. We have already changed our test practice to non-GUI 
testing so it is not an issue for us. But if anyone needs to investigate this 
further I'm willing to help.

-- 
Best Regards

Kostas Papadopoulos

K.E MethodosIT Ltd

Tel: +357 22463610
Fax: +357 22515197
Website: http://www.methodosit.com.cy


On Wed 03 Apr 2013 15:46:12 Philippe Mouawad wrote:
> Hello,
> @Kostas, there is a clear recommandation to do test in NON GUI mode.
> http://jmeter.apache.org/usermanual/best-practices.html
> 
> Since 2.5 there has been a lot of fixes on somes GUI issues related to
> synchronization problems, they may have incurred some performance
> degradations although I didn't notice them on the few tests I did. There
> has been a Bugzilla opened a while ago and tests didn't show it clearly
> 
> See:
> 
>    - http://jmeter.apache.org/changes.html
>    - http://jmeter.apache.org/changes_history.html
> 
> @Kirk,
> Since 2.5 there has been quite a lot improvements on Memory and
> Performances.
> Among this:
> 
>    - fixes on memory leaks
>    - fixes on memory usage by Regexp Extractor which consumed the double
>    of a response size
>    - fixes in core
> 
> In 2.9, we introduced a performance improvement that may have increased
> usage of memory which in summary caches the response so that it is not
> converted/parsed as many times as there are post processors.
> 
> My tests showed an important performance gain if post-processors were used
> which in my opinion is the majority of cases.
> 
> 
> So at first sight I doubt there is performance degradation between 2.5 and
> 2.9 but I may be wrong.
> 
> Don' t hesitate to open an issue with a sample test plan and as many
> informations as you have
> 
> 
> Regards
> 
> Philippe M.
> 
> On Wed, Apr 3, 2013 at 1:44 PM, Kirk Pepperdine
> 
> <kirk.pepperdine@gmail.com>wrote:
> > I've noted some significant differences in performance which I'll be
> > investigating over the next few days. The first thing I've noted is a
> > significant increase in memory requirements.
> > 
> > -- Kirk
> > 
> > On 2013-04-03, at 4:48 AM, Kostas Papadopoulos
> > <kostas@methodosit.com.cy>
> > 
> > wrote:
> > > We have been using JMeter version 2.5 to do some performance testing.
> > > I recently installed JMeter version 2.9 and I found that the test
> > > results
> > 
> > for
> > 
> > > the same tests are very different when using the GUI. In one instance,
> > 
> > the
> > 
> > > same test gives throughput 4500/sec with version 2.5 and 3800/sec with
> > 
> > 2.9.
> > 
> > > Running non-gui on both versions gives comparable results (within 2%).
> > 
> > I'm
> > 
> > > running these tests on the same exact environment for both version
> > > (same machines, application to be tested, java version, database,
> > > data, etc.)
> > > 
> > > Is this to be expected? Is the recommended practise to run only
> > > non-gui?
> > 
> > Or
> > 
> > > is it something to be looked at more carefully?
> > > 
> > > Please excuse me if this has this been addressed before.
> > > 
> > > --
> > > Best Regards
> > > 
> > > Kostas Papadopoulos
> > > 
> > > K.E MethodosIT Ltd
> > > 
> > > Tel: +357 22463610
> > > Fax: +357 22515197
> > > Website: http://www.methodosit.com.cy
> > > 
> > > 
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