perfSONAR User Q&A and Other Discussion

["Garnizov, Ivan" <>]

Hello Mike,

Please note with regards to your reply this channel is a mailing list 
channel, not a messenger.

The snapshot you shared appears fully normal to me. In other words you are 
complaining about a pS feature or perhaps the lack of it, but certainly not 
about a bug.
The pS graph interconnects the results with a line and it is not the case 
that the line you see is formed by a high dense of dots. Therefore when the 
results from two distant measurements in time get connected, then you get the 
false impression of continuity in the results. Still, as can be seen on the 
snapshot, the small dots on the line depict the moments in time, when real 
data had been found in the measurement archive. So IMO users are not left 
clueless about it.

Of course I am not saying pS has the perfect presentation of the results, but 
would you be able to describe the perfect solution having in mind that:
- latency measurements generate 100p/s. We present of course aggregation of 
these, but still in short intervals
- latency measurement rate is configurable and the intervals of the test is 
not stored in the archive. It is only the measurement results, when we have 
them

So to conclude:
"Maddash WebUI does not detect VM agent down on dashboard when VM is powered 
off"
MaDDash WebUI (= graphs) does not detect when a VM agent or any measurement 
points are down or for any other connectivity or metric development issue. 
Parts of this functionality is implemented in the pS MaDDash dashboard 
matrix, which actually relies on Nagios based checks, but not the MaDDash 
graphs.


Regards,
Ivan Garnizov

GEANT WP6T3: pS development team
GEANT WP7T1: pS deployments GN Operations
GEANT WP9T2: Software governance in GEANT



-----Original Message-----
From:  
[] On Behalf Of Mike Cruzz
Sent: Thursday, July 30, 2020 10:28 PM
To: 
Subject: Re: [perfsonar-user] Maddash WebUI does not detect VM agent down on 
dashboard when VM is powered off

This is when I re-enable the VM nic.

https://ibb.co/WKSZrRJ