swappiness default value on desktop os version (up to 12.10)

Asked by Sergey Golub on 2013-04-04

vm swappiness default value on desktop 12.10 is 60. However in this article https://help.ubuntu.com/community/SwapFaq#What_is_swappiness_and_how_do_I_change_it.3F it's recommended to 10, and 60 is for server version. Can we split values for server/desktop versions?

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubuntu-desktop 1.287
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Thu Apr 4 10:08:21 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-04-03 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: ubuntu-meta
UpgradeStatus: No upgrade log present (probably fresh install)

Question information

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Ubuntu ubuntu-meta Edit question
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Last query:
2013-04-04
Last reply:
2013-04-04

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We understand the difficulties you are facing, but it is better to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs.

Sergey Golub (sergey-golub-x) said : #2

I know how to change that param. I want it to have proper value on desktop version.

N1ck 7h0m4d4k15 (nicktux) said : #3

Hi Sergey Golub,

the swappiness value depends on how much physical RAM you have. If you have enough , then you can decrease the value to 10 , but if you don't have enough it is better to leave it as it is.

So you understand that Ubuntu developers cannot set a value of 10 , by default. Some desktops have not enough RAM to support this value.

Regards
 NikTh

You can set it as you wish but lower end systems benefit from a slightly higher swappiness. I don't recommend this be changed and many non-technical users who aren't even aware of what vm.swappiness is or does or even exists use Ubuntu quite happily.

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