perfsonar development work

[Jason Zurawski <>]

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.

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.

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.

-jason