perfsonar development work

[Fausto Vetter <>]

Hi,

Maybe, Why not testing on local machine too, because LAN also may add 
undesired delay to the process.

Fausto

Andreas Hanemann wrote:

> Michael Michalis wrote:
>  
>
> >  
> >    
> >
> > > -----Original Message-----
> > > From: Andreas Hanemann 
> > > [mailto:]
> > > Sent: Thursday, May 10, 2007 2:39 PM
> > > To: Michael Michalis
> > > Cc: Nina Jeliazkova; Loukik Kudarimoti; Ilias Tsompanidis; perfsonar-
> > > ;
> > >  Athanassios C. Liakopoulos; Jochen Reinwand
> > > Subject: Re: [pS-dev] Performance Testing
> > >    
> > >      
> > Hi Andreas
> >
> >  
> >    
> >
> > > Hi Michalis,
> > >
> > > I have used the commented version from Nina and added some comments on
> > > my own. The testing method that you describe is very useful at least as
> > > a first step. We have to see whether we need more specific tests later.
> > > These could be needed to exactly determine the conditions of a service
> > > performance problem (e.g. the differences between response time for LS
> > > registration and deregistration requests reported during the perfSONAR
> > > meeting by RNP).
> > >
> > > Best regards
> > > Andreas
> > >    
> > >      
> > Thanks for your feedback. I've also placed my comments inside the doc but I
> > would like here to discuss a common comment that you and Nina made about my
> > suggestion for using a local network in order to run the tests. My original
> > thought was that we need to check our services performance alone. Using a
> > WAN to run the tests would certainly import latencies that could affect our
> > results because there is no way to remove network latency out of our
> > measurements. So in a local network the results will only reflect the
> > performance of the service and not the performance of the network.
> >
> > Now based on your feedback I'm guessing the reason that you would like to
> > use a WAN for the tests is that different types of requests may take
> > different amount of time to get through. If this is the case, then I suggest
> > to first run the tests on local network, so we can have a clear view of the
> > service performance and then conduct the tests on a WAN configuration
> > testing the entire system's performance. I would be very interested to hear
> > your opinion on the latter, and then I could produce an updated document.
> >
> >  
> >    
> This is a good proposal. My idea was not to say that tests on a LAN are
> useless, but to suggest additional WAN-based tests.
>
> Andreas
>  
>
> >     
> >
> >
> > Michalis
> >  
> >    
> >
> > > Nina Jeliazkova wrote:
> > >    
> > >      
> > >
> > > > Hello Michael,
> > > >
> > > > Please find my comments in track changes (attached).
> > > >
> > > > Best regards,
> > > > Nina
> > > >
> > > > Michael Michalis 
> > > > <>
> > > >  wrote:
> > > >
> > > >
> > > >      
> > > >        
> > > >
> > > > > Hi all,
> > > > >
> > > > >
> > > > >
> > > > > I've put together an initial document describing performance testing. I
> > > > > would greatly appreciate any comment or suggestions made on the
> > > > >        
> > > > >          
> > > document.
> > >    
> > >      
> > >
> > > > > Best Regards,
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Michalis Michael
> > > > >
> > > > >
> > > > >
> > > > >        
> > > > >          
> > > >      
> > > >        
> > > --
> > > Andreas Hanemann, 
> > >
> > > Boltzmannstrasse 1, 85748 Garching, Germany
> > > Telefon:   +49 89 35831-8712
> > > Fax:       +49 89 35831-9700
> > >    
> > >      
> >  
> >    
>
>