How to modify temporarily the swappiness parameter?

(4 posts) (3 voices)

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Ceel

offline
Administrator

Hi,

I try to improved the performances of my Acer (256 MB). I read in the Ubuntu documentation (https://help.ubuntu.com/community/SwapFaq#What_is_swappiness_and_how_do_I_change_it.3F) I can change the swappiness.
In a first time I'd like to do a temporary change but # sysctl vm.swappiness=50 returns sysctl: error: 'vm.swappiness=50' is an unknown key. And yet cat /proc/sys/vm/swappiness answers 60
why I cannot change the value temporarily?

Posted 9 years ago #
mojo

offline
Key Master

# systemctl -w vm.swappiness=50

sysctl -help

Posted 9 years ago #
az_ua

offline
Moderator
```
# cat /proc/sys/vm/swappiness
60
#  echo 50 > /proc/sys/vm/swappiness
# cat /proc/sys/vm/swappiness
50
```
> try to improved the performances
tazpkg -gi linux-zram fastest compared with any hdd swap
set size
http://tazpanel:82/index.cgi?file=/etc/compcache.conf&action=edit
# startd compcache
Posted 9 years ago #
Ceel

offline
Administrator

@mojo,

I was persuaded I have try it too but certainly not (or I made a typo?) because it works now.

@az_ua

I didn't believe I can use zram with only 256 MB RAM. I was wrong!
Without changing the default size (126 MB), that's really better.

Thank you to both of you.

Posted 9 years ago #

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