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Old 11-28-2006, 07:47 PM   #1
Registered: Nov 2006
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Adding Swap Partition Post-Install

so i had some trouble making a new partition for a swap during Ubuntu install. now looking at my cpu usage graph, i think i need a swap.

-does swap significantly reduce the CPU load? if so does the size of the partition matter? (if it helps, i have a Pentium 4 2A Ghz processor and 512mb of RAM)

-how to i set it up? i'm on Xubuntu.
Old 11-28-2006, 08:10 PM   #2
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Swap comes into play when the amount of ram isn't sufficient to handle the load. If ram usage doesn't hit 100%, you probably won't use swap. Graphics and sound editing apps may need swap, but most other won't unless ram is maxed out.

For example: I have 2 Gig ram; I never see swap in use. My last box had 256 meg ram; I saw swap used quite a lot.

Sise your swap partition to two or three times the amount of ram. That should work.

Will swap reduce CPU load? I don't know. I think it's more a function of the amount of ram you have to work with.
Old 11-28-2006, 08:47 PM   #3
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Swap has nothing to do with CPU usage. It's a place for a memory swap (hence the name}.

If you're using a lot of CPU run top to see what process is making so much use of the CPU. That can tell you whether there is an actual problem or not.

As for making a swap partition, some specifics about your drive, existing partions, and available space would be required as well as what "problems" you had.


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