[CentOS] strict memory

John R Pierce pierce at hogranch.com
Thu Oct 16 17:00:34 UTC 2008

Mag Gam wrote:
> Hello All:
> Running 5.2 at our university. We have several student's processes
> that take up too much memory. Our system have 64G of RAM and some
> processes take close to 32-48G of RAM. This is causing many problems
> for others. I was wondering if there is a way to restrict memory usage
> per process? If the process goes over 32G simply kill it. Any thoughts
> or ideas?

In /etc/profile, use "ulimit -v NNNN"   (in kilobytes) to limit the max 
virtual of all processes spawned by that shell

32G per process on a 64G machine sounds like a bit much.    wouldn't a 
limit more like 4GB per user session be more appropriate on a multiuser 

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