perfSONAR User Q&A and Other Discussion

[Mark Feit <>]

Ramzi Abdallah writes:
    
    When I try to configure on my perfsonar node  a throughput test and 
latency test to run on the same remote perfsonar node I get the bellow 
warning message
    "This host is configured with both bandwidth and one-way latency tests. 
Bandwidth tests can interfere with one-way latency tests."
    Is this just a warning message that can be ignored or it's advisable not 
to run multiple tests at the same time.

One-way latency is usually done continuously in a stream.  An un-throttled 
throughput test will attempt to saturate the interface, which means the 
latency test's packets will have to squeeze in with all of that additional 
traffic and may be delayed because of it, skewing the results.  The warning 
is just there as a reminder.

If you're running both on the same system, it's common practice to segregate 
latency or throughput onto a second interface to prevent that.

--Mark