How to change swap size on Ubuntu 14.04 ?

  • Posted on October 2, 2014
  • diditAsked by didit

Now, I am using ubuntu 14.04 with 512 RAM and Swap 512 too. I want to change my swap to 1 GB. Can anyone help me ? Should I repeat this step on this article with different size ?

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You could just delete the file and start from scratch, but if you just want to resize it you can do that as well. Just remember to disable it with swapoff first. For example:

# sudo swapon -s
Filename				Type		Size	Used	Priority
/swapfile                               file		1048572	0	-1
# sudo swapoff /swapfile 
# sudo fallocate -l 4G /swapfile
# sudo mkswap /swapfile
Setting up swapspace version 1, size = 4194300 KiB
no label, UUID=fb0aadaf-b52f-4928-b57f-c60ef7a0bd49
# sudo swapon /swapfile
# sudo swapon -s
Filename				Type		Size	Used	Priority
/swapfile                               file		4194300	0	-1

Thanks for instructions & discussion.

Funny thing, I had to reduce my swap file from 8G to 4G. Gobble up too much disk space.

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