perfsonar development work

[Michael Michalis <>]

> -----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.

     


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
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