Limits on memory usage
we have SL5.5 on our computing nodes.
Sometimes, users runs too many computations, and servers become unreachable due to lack of enough memory.
I want to restrict total memory usage of users to a little bit lower value of physical memory, so under all circumstances the servers will have enough memory to run system services.
I tried to limit several parameters in limits.conf file. But they didn't work.
How can I limit total memory usage of users?