Linux SWAP
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== Introduction == | == Introduction == | ||
+ | |||
+ | === What is SWAP? === | ||
+ | [http://en.wikipedia.org/wiki/Swap_space Swap space] is an auxiliary storage, such as a portion of a hard-disk, which can be used as memory by the operating system when system RAM is insufficient. This is especially useful on systems with very little system RAM, such as most DD-WRT compatible routers, as it helps prevent the system from running [http://en.wikipedia.org/wiki/Out_of_memory out of memory] when multiple background processes are installed. | ||
+ | |||
+ | === Do I need SWAP? === | ||
+ | Swap can be helpful in situations where dd-wrt: | ||
+ | * runs memory intensive applications ([[Optware]]) | ||
+ | * runs multiple background processes (again, [[Optware]]) | ||
+ | * runs on a router with less than 32 MB of RAM | ||
+ | |||
+ | Swap won't really be needed if: | ||
+ | * you only use the router for it's basic gateway/AP functions | ||
+ | * you only run a few additional services or applications with modest memory requirements | ||
+ | * your system has a lot of RAM (such as 64+ MB) | ||
== Requirements == | == Requirements == |
Revision as of 11:33, 24 May 2008
Contents |
Introduction
What is SWAP?
Swap space is an auxiliary storage, such as a portion of a hard-disk, which can be used as memory by the operating system when system RAM is insufficient. This is especially useful on systems with very little system RAM, such as most DD-WRT compatible routers, as it helps prevent the system from running out of memory when multiple background processes are installed.
Do I need SWAP?
Swap can be helpful in situations where dd-wrt:
- runs memory intensive applications (Optware)
- runs multiple background processes (again, Optware)
- runs on a router with less than 32 MB of RAM
Swap won't really be needed if:
- you only use the router for it's basic gateway/AP functions
- you only run a few additional services or applications with modest memory requirements
- your system has a lot of RAM (such as 64+ MB)