Mailinglist Archive: opensuse (1897 mails)

[Linda Walsh <suse@xxxxxxxxx>]

Junayeed Ahnaf Nirjhor wrote:
> Hello,
>
> Recently installed opensuse but made a mistake while installation. I've  
> installed without any swap partition. So the system is sluggish. Went to  
> google and found out this command will create a 512 MB file and use it as  
> a swap:
>
> dd if=/dev/zero of=/swapfile bs=1k count=524288 && mkswap /swapfile &&  
> sync && swapon /swapfile
>
> Question is, As My ram is 2 GB I need a swap partition of at least 4 GB  
> (It is stated on that site). What'll be the necessary changes to turn that  
> 512 MB into 4GB file?
>
> I know it's not about ubuntu, but this command is not distro based, it's  
> general Linux command.
>
> Can anybody help me out?
----
512MB should be more than enough, 256MB, might be more than enough...


I find it's good to have SOME swap, since any system can use up RAM with 
filecache,
so it's good to have a SOME swap, so any programs that you run at startup but 
that *generally*
just sit around in memory -- NOT even twiddling their bits (i.e. they are idle, 
so
they never get swapped in). can be swapped out.  They are still ready to be 
swapped in --
so they and or your system is 'happy' with the 'whatifs', but after some large 
memory even
I'll see maybe a few SCORE of pages 'resident' in swap, that will just sit there until I 
reboot.  So something or some programs just get swapped out -- and never ask to be swapped in
again.  Might as well let them so you can put your active memory to better use for 
other things...like file buffers...etc...

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