After execute the configurations wizard in Orion server, we see the node linux with polling methor agent show in web console used a memory until 20% of the all memory server. But in configurations of the linux server show use close 80 % or 90 %, in some situations the server stop for this.
Following recomendations of the solarwinds support removed the agent but no solution the problem.
My question:
In node view show only 20% memory used, for what in server show values close 100%????
The linux version is Red Hat.
Its necessary to do any configuration in linux server ????

Memory utilization is a testable value, not generally a configurable one (unless you configured the java heap to expand up to 80% of the available memory)
Specifically, how are you testing the Linux node the Java application server is running on to arrive at the conclusion that it has 80% - 90% memory usage?