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While installing Ubuntu 18.04 LTS I created swap in hard drive which is leading me hang for heavy applications because I have 8 GB of RAM.

Eliah Kagan
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Veeragandham sai krishna
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    @Veeragandham sai krishna 8GB swap partition should be plenty for 8GB RAM. Create new swap partition on SSD and add path to /etc/fstab in same format as existing swap partition except use new UUID. Add a # in front of existing swap partition path in case you decide to change back later. If you are using hibernation you will want to update /etc/default/grub and do a sudo update-grub to update "resume" location in grub.cfg. – C.S.Cameron Jun 07 '20 at 07:52

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It's not a good idea to use the SSD drive as the swap space but if the life-span of the device is not a concern for you , you can manually delete your current swap partition and create a new one .

First off you have to unmount the current swap (Check your memory usage since unmounting the swap might cause bottlenecks in your RAM) :

sudo swapoff -a

Then delete your swap file (presumably it's /swapfile )

sudo rm /swapfile

And create a new swapfile in your SSD :

fallocate -l 2G /path/to/custom/swapfile/in/ssd   #Change the size to suit your needs

then change the permissions :

sudo chmod 0600 /your/swapfile

make a swap partition :

sudo mkswap /your/swapfile

and finally mount it :

sudo swapon /your/swapfile

Now you should be able to use the new swap partition.

And don't forget to change the swap file address in your /etc/fstab file to point to the new swap partition not the old one. The line containing swap should look like this :

/new/swap/location    none    swap    sw    0   0

And if you want to use the hibernation feature , you should update your grub config as @C.S.Cameron mentioned :

sudo update-grub
Parsa Mousavi
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