System-wide Limits

All the limits set in here are generic limits that effect everything that is not controlled by the root user. You have three options from this menu, if your limit is soft or hard, what kind of limit it will be and the value of the limit. Each item is broken down below.

Type

This type allows you to choose between a Soft and Hard limit. A soft limit informs the user that they have exceeded their quota while a hard limit ``cuts'' the user off, preventing them from using any more resources.

Item

This is a pull-down list of items that describe how this limit will behave:

• Maximum core size(Kb) - This limits the size of a core file. A core file is a file that a program will write to the system when that program crashes. The developer can then take this core file and use it for debugging the program. If the system is not used for developement it should be set to 200.
• Maximum file size (Kb) - This is the maximum size a single file is allowed to be. This option is desireable for enforcing e-mail mailbox limits.
• Maximum Logins - This controls the maximum number of simultaneous logins
• Maximum Number of Open Files - This limits the total number of open files on the system. An open file is any file with its flag set to open.
• Maximum Number of Processes - This will limit the total number of current running processes on the system.
• Maximum RSS Size (Kb) - This specified the total amount of physical memory used, not counting pages swapped out

Value

This is the numerical value associated with the item. For example, if you chose Maximum file size (Kb) then a value of 250 would be 250Kb or if you selected Maximum Logins then a value of 5 would denote a maximum of 5 logins.