Better Unilization of Memory - Mailing list pgsql-general

In looking at top, I have noticed when doing some
long queries that RAM memory is only being used
at 1-3%.  While, CPU often jumps to 97, 98, even
99% utilization (which is great!).

Is this normal for RAM utilization?

If not, how can I better utilize my RAM during
queries and or general processing?

Thanks for your help!
Lynn Tilby
ltilby@asu.edu