Increase Swap Space Linux

Dd if dev zero of var swapfile bs 1024k count 1000.

Increase swap space linux. Cd var touch swapfile chmod 600 swapfile ls la swapfile. It might be advantageous to increase the amount of swap space to 512 mb if you perform memory intense operations or run applications that require a large amount of memory. This adds more space to the already existing vg main volume group so you can then extend an existing swap logical volume or if you ve already deleted it create a new logical volume for the swap that is larger. Add newly created swap file into fstab file so that swap space partition available even after the reboot.

Cd var touch swapfile chmod 600 swapfile ls la swapfile. Vgextend vg main dev xvdd. This way you won t have to touch the partition. We can turn on the swapfile to use as swap space by using the below command.

Enable the swap file by running below command. Swap on linux can be created in three ways. Ls lh swapfile rw 1 root root 2 0g may 16 12 52 swapfile. Use dd command to fill the swap file with 1 gb size as an example as follows.

Total used free shared buffers cached. If you are upgrading your system ram it is necessary to add more swap space. Do not leave any spaces between the sw the comma and the pri 10. Your linux system can use multiple swap spaces as needed.

This allows you to manage the running of applications that require large amounts of memory. For example you may upgrade the amount of ram in your system from 128 mb to 256 mb but there is only 256 mb of swap space. Generally you need to create a swap space on linux but it is recommended that you create swap space on linux when you have less ram. Reboot your computer and use the swapon show command.

If you have additional partitions and one of those is a better candidate than the partition feel free to use it instead. Sudo mkswap swapfile setting up swapspace version 1 size 2 gib 2147479552 bytes no label uuid 049218ad 50b4 4c78 98e4 7a1ea21ca77e. To verify the permissions we can see using the below command. Now let s see how to increase the swap file.

As per this command total swap space is 2gb. Check newly created swap file. Dev sda2 partition 2096472 0 1. Root client swapon s.

Add the new pv to existing volume group to extend the available space. Root client free m. You may have heard before that everything s a file in unix and linux. Filename type size used priority.

Sudo swapon dev sda4. That is add pri 10 to the options field separated from the sw with a comma. Let check the available swap space. If you are using swap partition and want to increase the swap size you can create swap file.

This tutorial assumes that you are using swap file on your system not a swap partition. The priority of this swap space has been elevated to 10. First thing first make sure that you have a swap file in your system. Sometimes it is necessary to add more swap space after installation.

Vi etc fstab dev sda4 swap swap defaults 0 0.