[lustre-discuss] Traffic compression?

E.S. Rosenberg esr+lustre at mail.hebrew.edu
Mon Feb 6 12:25:15 PST 2017

We started closer monitoring of resources on our cluster and I noticed that
there is sometimes a big discrepancy between the read traffic reported by
Lustre and the incoming traffic reported by infiniband (which is the
interace carrying the Lustre traffic).

Currently I have a 4.4GB peak on Lustre while Infiniband at the same time
is showing just 1.4GB/s traffic (also there is a 2 minute difference
between the 2 peaks)
This is the summation of all the nodes (without the servers) in the cluster.
The stats are gathered using collectl at a 1 minute interval.


(There are also lots of stats that match 1:1 which makes me less sure what
to make of this)
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