Change Swappiness

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Change Swappiness

Postby alaskale on Thu May 28, 2009 9:54 pm

I've recently switched to Linux mint and have thus far thoroughly enjoyed it. It runs what I would estime as 20% faster on my machine than Ubuntu, and I was able to jump right in. Ndiswrapper and all the codecs I need already installed.

However, on Jaunty I had learned to change the Swappiness priority and found that it really did help. However, on LM I have been unable to do that as I would have on Ubuntu.

I use this guide: http://www.chinwong.com/index.php?/site ... d_up_tips/

Would simply adding the vm.swappines value do the trick, or is there more to it?

Thanks for helping me out,

-Dominick
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Re: Change Swappiness

Postby merlwiz79 on Thu May 28, 2009 10:33 pm

Code: Select all
gksu gedit /etc/sysctl.conf

Add to the bottom:
Code: Select all
vm.swappiness=10
Restart sysctl
Code: Select all
sudo sysctl -p
To test if it worked after reboot run
Code: Select all
cat /proc/sys/vm/swappiness

You should see 10.
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Re: Change Swappiness

Postby Fred on Thu May 28, 2009 10:39 pm

alaskal,

I took the below quote from the link you posted. I made a couple corrections and clarifications, which are in bold.

To make sure the system always uses a swappiness of 10 on every boot, we’ll need to edit the sysctl.conf file in the etc directory. To do this, type:

gksu gedit /etc/sysctl.conf

This will call up a text editor with the configuration file. Find the line that says “vm.swappiness=60” without the quotes, and change the 60 to 10, taking care to change nothing else in the file. If this line isn't in the file, add it. Save the file and reboot, you’re done.


Unless Mint 7 is not using this structure anymore you should be good to go.

Fred
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Re: Change Swappiness

Postby Fred on Thu May 28, 2009 10:41 pm

merlwiz79,

Oops, sorry. I didn't see your post before I submitted. :-)

Fred
Insanity: Doing the same thing over and over and each time expecting a different result.

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Re: Change Swappiness

Postby alaskale on Thu May 28, 2009 11:51 pm

I just got home and was surprised to see such fast replies.

Thank you for your assistance!

:D
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Re: Change Swappiness

Postby linuxviolin on Fri May 29, 2009 12:11 am

If you have more than 1 or 2 GB of RAM you should choose 0, or 1... And change vfs_cache_pressure to 50.
K.I.S.S. ===> "Keep It Simple, Stupid"
"Simplicity is the ultimate sophistication." (Leonardo da Vinci)
"Everything should be made as simple as possible, but no simpler." (Albert Einstein)
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Re: Change Swappiness

Postby alaskale on Fri May 29, 2009 12:25 am

I have 2 GB of ram. how do I change the vfs_cache_pressure?
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Re: Change Swappiness

Postby linuxviolin on Fri May 29, 2009 12:39 am

Like for swappiness. Add in sysctl.conf a line: vm.vfs_cache_pressure = 50
K.I.S.S. ===> "Keep It Simple, Stupid"
"Simplicity is the ultimate sophistication." (Leonardo da Vinci)
"Everything should be made as simple as possible, but no simpler." (Albert Einstein)
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