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gudurukarthik
September 22nd, 2010, 07:33 PM
hi , im running ubuntu on a sony fw series 6 gb ram laptop. my question is , i think ubuntu is not using my total ram , and i got this after i had seen the system monitor and it shows ''memory :2.9gb''.
can any one help me in solving this problem . and please tell me if any thing else i should be doing to improve my laptop performance .
thank you

jfreak_
September 22nd, 2010, 07:43 PM
I think you are using 32-bit ubuntu. 64-bit will make available all the RAM. There is a workaround for 32-bit kernels to use all the RAM but I am not sure how to do it. Google it.

gudurukarthik
September 22nd, 2010, 07:48 PM
hey thank you , and as im new to ubuntu can u please tell me where can i check whather im using 32 bit or 64

PRC09
September 22nd, 2010, 08:20 PM
This will tell you if you are using 64bit.From a terminal type:


uname -m

There is a PAE kernel that will make all the ram available but 64bit would probably be better.There is no way that I know of to upgrade from 32bit to 64bit other than re-install with 64bit.See link attached for PAE info....


https://help.ubuntu.com/community/EnablingPAE

gudurukarthik
September 22nd, 2010, 08:29 PM
hey it replays i 686 ... so what's it mean

PRC09
September 22nd, 2010, 08:32 PM
That means you are using 32bit.....

roggenschrotbrot
September 22nd, 2010, 08:37 PM
try

getconf -a | grep -i long

the value of LONG_BIT is what you want to know

gudurukarthik
September 22nd, 2010, 08:42 PM
it says :

LONG_BIT 32
ULONG_MAX 4294967295


so what sould i be doing
thank you a lot for ur helping nature

PRC09
September 22nd, 2010, 09:10 PM
The choice is yours,you can instal the PAE kernel which has the instructions in the link or you can download the 64bit Ubuntu disk and re-install .Personally I would try the PAE route and see if it makes a difference in your performance.I run both and dont really notice much difference but I dont do alot of work with cpu intensive things which is where the 64bit would be an advantage.....

roggenschrotbrot
September 22nd, 2010, 09:15 PM
if you want a notable improved performance you could also test a lighter desktop environment like xfce or a standalone window manager like openbox.