perfSONAR User Q&A and Other Discussion

[Jeremy Palmer <>]

I actually just converted all our toolkit hosts to a 'mesh' this week. Here are 
a few of the things that I noted from my work.

- I do have an example.conf in my /opt/perfsonar_ps/mesh_config/doc/ directory. 
I'm guessing it was installed when I installed the below JSON builder package.

- Install JSON Builder (not installed by default):
yum install perl-perfSONAR_PS-MeshConfig-JSONBuilder

- None of my mesh tests would work bi-directioinally until I added the following 
line under the owamp test_spec section of my mesh config. I did not see any 
documentation on this and its not in the example config. I just happened to find 
it somewhere in a google search.
force_bidirectional 1

I did remove all manually-created tests on my toolkit hosts prior to setting up 
the mesh. I don't think this is required tho since the mesh creates its own 
scheduled tests on each host.

I also had an issue where none of my mesh tests would populate any graph data in 
the webUI. I ended up re-initializing my owamp databases using the following 
command. This seemed to fix the issue.
/opt/perfsonar_ps/perfsonarbuoy_ma/bin/owdb.pl -i root

One last thing I found odd: in the example.conf config, the owamp_test is set 
for 100 packets-per-second (0.01) even though the comment says "Send 10 packets 
every second". I changed my setting back to 10pps (0.1) since 100pps will use up 
a lot more bandwidth if you are doing lots of tests.

Jeremy Palmer
Senior Network Engineer
ViaWest, Inc.
Office: 720.891.1045
Fax: 303-874-5236
http://www.viawest.com

On 6/11/2014 10:21 AM, Kathy Benninger wrote:
> I want to move the XSEDE perfSONARs from manually configured testing to mesh
> config based testing and have come up with a few questions/issues while
> following the instructions at
> https://code.google.com/p/perfsonar-ps/wiki/MeshConfigurationInstallation
>
> /opt/perfsonar_ps/mesh_config/doc/
> as installed doesn't seem to include example.conf , but I was able to grab the
> file via the online link.
>
> I can't find build_json
>
> Do I need to disable, delete, or otherwise clean out existing manual testing 
> and
> its associated databases before trying to start the mesh config invoked
> testing?  The mesh config tests will be duplicating what was previously manu
>
> Is there a way to store results both on the individual MP/MA hosts and a 
> central
> server (e.g., 2 write lines in the config)?
>
> Thanks!
> Kathy