perfsonar development work

[Andreas Hanemann <>]

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
>>     
>
>
>   

-- 
Andreas Hanemann, 

Boltzmannstrasse 1, 85748 Garching, Germany
Telefon:   +49 89 35831-8712
Fax:       +49 89 35831-9700