Linux SWAP

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(New page: == Introduction == == Requirements == == Enabling swap == == Checking 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)

Requirements

Enabling swap

Checking swap