perfsonar development work

[Slawomir Trzaszczka <>]

On Mon, 2009-11-30 at 09:52 -0500, Jason Zurawski wrote:
> Slawomir Trzaszczka wrote:
> > Hi all,
> > 
> > I've created performance tests for LS1 and LS2. In these tests, I used
> > larger "size" of services then in  previous version of tests - services
> > contain more interfaces(100,500,1000).
> 
> Couple of comments.  All in all good job.
> 
> 1) 1000 isn't really the largest amount of interfaces we have seen in 
> the wild.  Perhaps someone from ESnet can provide their store file for 
> reference.
> 
> 2) Also on the subject of interfaces, have you tried the case of 
> 'updating' a registration?  This would be similar to a back to back 
> de-registration and registration to simulate the change of a couple of 
> interfaces.

No. I will perform this kind of tests

> 
> 3) 'De-registration' by itself may not be a useful thing in the pS 
> world.  I think it is a rarity that services will send a de-registration 
> message before they go offline cleanly, and they will not send if they 
> are go offline un-cleanly.  I think its good to test, but testing the 
> timeout/cleaning of the database during the regular processing of 
> registrations/queries may be more valuable.

Ok, but what about cleanup action ? Cleanup is very similar to
de-registration but it's internal action of LS.  

> 
> 4) It was mentioned in previous mails, but serial testing is not as 
> valuable as concurrent.  This will show what sort of bottleneck can 
> occur if you are running two complex things at the same time.  This our 
> biggest problem with DBXML in the pS-PS hLS/gLS.

Ok, I'll prepare some tests. 

> 
> -jason
> 

Regards,

Slawek

-- 
+--------------------------------------------+
 Slawomir Trzaszczka                       
                                           
 Poznan Supercomputing & Networking Center 
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