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*SOLVED* sysctl from inside VE fails to set a parameter [message #8337] Thu, 16 November 2006 09:25 Go to next message
iziz is currently offline  iziz
Messages: 10
Registered: October 2006
Junior Member
Hello,

I'm not satisfied with default Linux kernel behaviour in out of memory situation. I try to change it to smth more appropriate for one of my VEs from inside it and see strange error:

[root@my.host:~]$ sysctl -w vm.overcommit_memory=2
error: unknown error 1 setting key 'vm.overcommit_memory'

Any clues who generates this? How to change vm.overcommit_memory for one particular VE?

[Updated on: Thu, 16 November 2006 12:15] by Moderator

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Re: sysctl from inside VE fails to set a parameter [message #8341 is a reply to message #8337] Thu, 16 November 2006 10:45 Go to previous messageGo to next message
dev is currently offline  dev
Messages: 1693
Registered: September 2005
Location: Moscow
Senior Member
AFAIR, overcommit mode can be changed for whole node only now.

If you need to protect your whole VE from OOM killer set oomguarpages.

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Re: sysctl from inside VE fails to set a parameter [message #8342 is a reply to message #8341] Thu, 16 November 2006 10:50 Go to previous messageGo to next message
iziz is currently offline  iziz
Messages: 10
Registered: October 2006
Junior Member

So if I try 'sysctl -w vm.overcommit_memory=2' in root node it should work for all VEs, right?

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Re: sysctl from inside VE fails to set a parameter [message #8343 is a reply to message #8342] Thu, 16 November 2006 11:03 Go to previous messageGo to next message
dev is currently offline  dev
Messages: 1693
Registered: September 2005
Location: Moscow
Senior Member
yup.

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Re: sysctl from inside VE fails to set a parameter [message #8344 is a reply to message #8343] Thu, 16 November 2006 11:07 Go to previous message
iziz is currently offline  iziz
Messages: 10
Registered: October 2006
Junior Member

thanks!

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