perfSONAR User Q&A and Other Discussion

[Brian Candler <>]

I have a couple of questions about the use of a central Measurement 
Archive, as documented at http://docs.perfsonar.net/multi_central_MA.html

1. It seems this is a "push" architecture, i.e. the perfsonar node which 
made a measurement connects to the central MA to store the results there.

What happens if the central MA goes down for a while, or the network to 
the central MA? Are the measurements lost, or are they buffered to be 
delivered later? Does this have any effect on the timing of subsequent 
measurements?

What if there are multiple MAs selected, but only one is down or 
unreachable?

2. If you have made manual changes to regular_testing.conf to point to a 
different MA (or multiple MAs), and you subsequently change test 
configurations through the GUI, does this leave your MA customisations 
alone?

Thanks,

Brian Candler.