perfSONAR User Q&A and Other Discussion

[Aaron Brown <>]

On Feb 25, 2009, at 9:57 AM, Richard Carlson wrote:

> Hi John;
>
> Thanks for the logs.  I see from the log extract that your server is  
> running 15 sec tests.  However I see other 10 & 60 sec requests, so  
> I'm assuming that the 10 sec tests are from people using the command  
> line version (10 sec is the default test period) and some other  
> servers are scheduling tests via the perfSONAR-Buoy interface on  
> their machine.
>
> Here's what I see right now.  Testing to/from MSU is working, but we  
> are loosing data.  The current graphs show 7 successful tests from  
> MSU --> BNL starting at 1:47 am and ending at 8:27.  The 4:45 am  
> test is missing.  The graphs also show 4 tests in the opposite  
> direction missing 1, 3, & 6 am.
>
> I also see tests to/from OU with 4 tests from OU -> BNL at 1, 2, 7,  
> & 9 am with 3 in the opposite direction at midnight, 1, & 7 am.  The  
> rest were unsuccessful.
>
> I did notice that you are testing to the psum01 node, which I think  
> Shawn setup as the delay server so that's why none of those work.  I  
> think you want to test to the psum02 node.
>
> I'm still wondering if your server is just trying to run too many  
> tests (19 peers in your config) and I don't know how many other  
> servers are requesting tests.  As I see it, we can try reducing the  
> number of peers, or we can get the pS folks to help guide us on  
> determining why some tests are failing and why some peers aren't  
> responding at all.
>
> Jeff/Aaron, what log files should we be looking at to determine what  
> is going on?

I'd take a look in /var/log/messages, the output should be going there.

Cheers,
Aaron