ubuntu-devel Digest, Vol 21, Issue 31

[Joel Bryan T. Juliano]

On Tue, 2006-05-09 at 14:03 +0200, Michiel Sikma wrote:
> > With Ubuntu (flight 7), on my laptop (240 MB of real memory) it is even
> > worse than with Kubuntu :(
> > I cannot even turn off swap (swapoff -a) without freezing the system or
> > killing swapoff process due to out-of-memory.
> >
> > Can someone else verify this (with real setup, not in virtual 
> > environment)?
> >
> > Regards
> >
> > 	Krzysztof Lichota
> >
> I'll gladly test with my 400 MHz laptop with (around) 192 MB RAM when I 
> get home. Well, when I get home + the time required to download Flight 
> 7. It's supposed to run the text installer but not the graphic 
> installer?
> 
> Regards, Michiel
> 
> 

See if your running laptop mode

# cat /proc/sys/vm/laptop_mode

If it's 0, run

# sudo /sbin/sysctl -w vm.laptop_mode 1

You can also try setting RAW parameters in the running kernel,
via sysctl.

# sudo /sbin/sysctl -w vm.min_free_kbytes <reserve memory for system>

the default is 2039, but if you like to use the swap more than your
memory, change it to higher values, I usually set it to 16384.

tweaking kernel settings is dangerous, make sure you save your work
before doing anything, it may close your applications.

and to make things permanent, edit /etc/sysctl.conf and add the words
after the -w.

JB
-- 
Joel Bryan T. Juliano <joelbryan.juliano at gmail.com>
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