Swap File questins for LINUX servers.

[butchrecon]

I have a Server with 512 Meg RAM. How big should the swap file be in LINUX? Right now it is 130Meg. Is that correct? If not how do I change the Swap aprtition without reloading? James Collins
Field Service Engineer
A+, MCP

email: butchrecon@skyenet.net

Please let us (Tek-tips members) know if the solutions we provide are helpful to you. Not only do they help you but they may help others.

 

[boebox]

As a general rule the swap partition should be 1+.5 x mem

If you have 512M in mem, your swap shold be 1280M


-Tony

 

[butchrecon]

Any way to resize them after they have been created? James Collins
Field Service Engineer
A+, MCP

email: butchrecon@skyenet.net

Please let us (Tek-tips members) know if the solutions we provide are helpful to you. Not only do they help you but they may help others.

 

[ifincham]

Hi,



You can either create another partition with id x'82' and mkswap that or you can even create a file on a 'normal' linux partition and use that for swap space (similar to M$ virtual memory files). The redhat installer will sometimes do the latter for you if you upgrade to a 2.4.x kernel edition of redhat. It ends up in /etc/fstab entry like this :



/SWAP swap swap defaults 0 0



I.e the file /SWAP is swap space.



The system should use as swap any /etc/fstab entry with id 'swap' - up to a limit of 8. See 'man mkswap'
. To view active swaps do :

cat /proc/swaps

Regards