Unixcop published a tutorial showing you how to limit usable memory size in Linux.

Limit usable memory size in Linux

Sometimes for one reason or another it is necessary to limit the size of usable memory on Linux. Although not very frequent, it can be useful in complex environments. Let’s start. Although it is not frequent to find ourselves in this situation, it is true that in complex environments where there are servers.

Limit usable memory size in Linux - Unix / Linux the admins Tutorials