{"id":5710,"date":"2021-05-18T13:46:00","date_gmt":"2021-05-18T13:46:00","guid":{"rendered":"https:\/\/www.magetop.com\/blog\/?p=5710"},"modified":"2021-09-29T08:56:15","modified_gmt":"2021-09-29T08:56:15","slug":"how-to-add-swap-space-on-ubuntu","status":"publish","type":"post","link":"https:\/\/www.magetop.com\/blog\/how-to-add-swap-space-on-ubuntu\/","title":{"rendered":"How To Add Swap Space On Ubuntu"},"content":{"rendered":"\n

In this post, I will guide you on How To Add Swap Space On Ubuntu<\/strong>. Use the hard disk as temporary memory to supplement physical memory (RAM) when handling tasks that are larger than the capacity of existing RAM.<\/p>\n\n\n\n

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What is Swap Space?<\/h2>\n\n\n\n

Swap space is a space on the hard disk which is a substitute of physical memory\u2026 Virtual memory is a combination of RAM and disk space that running processes can use. Swap space is the portion of virtual memory that is on the hard disk, used when RAM is full.<\/p>\n\n\n\n

Swap is not considered a replacement for physical memory. Since swap space is part of the hard drive, it has a slower access time than physical memory by about 10 to 1000 times. If your system is constantly running out of memory, you should add more RAM.<\/p>\n\n\n\n

Steps To Add Swap Space On Ubuntu<\/h2>\n\n\n\n
Note: Use \u200broot or user with sudo privileges can activate the swap file.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

I will create a 4GB<\/strong> swap file. You can add a swap file with the size you want.<\/p>\n\n\n\n

1. Create a swap file.<\/p>\n\n\n

\nsudo fallocate -l 4G \/swapfile\n<\/pre><\/div>\n\n\n
If faillocate<\/code> is not installed or an error message saying fallocate failed: Operation not supported<\/code> then use the following command to create the swap file:<\/p>\n\n\n
\nsudo dd if=\/dev\/zero of=\/swapfile bs=1024 count=4194304\n<\/pre><\/div>\n\n\n
Note: bs<\/strong>=1024 means read and write up to 1024 bytes at a time and count<\/strong>=(1024 x 4096)MB size of the file.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
2. Set the file permissions to 600 for the swap file.<\/p>\n\n\n
\nsudo chmod 600 \/swapfile\n<\/pre><\/div>\n\n\n
3. Create a swap area on the file:<\/p>\n\n\n
\nsudo mkswap \/swapfile\n<\/pre><\/div>\n\n\n
You should see the output like this:<\/p>\n\n\n
\nSetting up swapspace version 1, size = 4 GiB (4294963200 bytes)\nno label, UUID=9888e511-ff44-4cb3-a999-c9b072a75a67\n<\/pre><\/div>\n\n\n
4. Enable the swap file:<\/p>\n\n\n
\nsudo swapon \/swapfile\n<\/pre><\/div>\n\n\n
To make the change permanent open the \/etc\/fstab file<\/code>:<\/p>\n\n\n
\nsudo nano \/etc\/fstab\n<\/pre><\/div>\n\n\n
Paste the following line:<\/p>\n\n\n
\n\/swapfile swap swap defaults 0 0\n<\/pre><\/div>\n\n\n
\"Paste<\/figure>\n\n\n\n
5. Now verify the swap file was created by using the swapon command.<\/p>\n\n\n
\nsudo swapon --show\n<\/pre><\/div>\n\n\n
You should see the output like this:<\/p>\n\n\n
\nNAME      TYPE SIZE USED PRIO\n\/swapfile file   4G   0B   -2\n<\/pre><\/div>\n\n\n
Using the free<\/strong> command:<\/p>\n\n\n
\nsudo free -h\n<\/pre><\/div>\n\n\n
You should see the output like this:<\/p>\n\n\n
\n              total        used        free      shared  buff\/cache   available\nMem:          1.9Gi       885Mi       189Mi        61Mi       912Mi       849Mi\nSwap:         4.0Gi          0B       4.0Gi\n<\/pre><\/div>\n\n\n
Adjusting The Swappiness Value<\/h2>\n\n\n\n
You can check the current swappiness value by typing the following command:<\/p>\n\n\n
\ncat \/proc\/sys\/vm\/swappiness\n<\/pre><\/div>\n\n
\nOutput:\n60\n<\/pre><\/div>\n\n\n
To set how often the kernel can use the swap file, open the file \/etc\/sysctl.conf.<\/p>\n\n\n
\nsudo nano \/etc\/sysctl.conf\n<\/pre><\/div>\n\n\n
And add the line below:<\/p>\n\n\n
\nvm.swappiness=10\n<\/pre><\/div>\n\n\n
\"Set<\/figure>\n\n\n\n
Note: The default value of how frequent swap space can be used is 60 (maximum value is 100). The higher the number, the more frequent swap space utilization by the kernel.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Removing a Swap File<\/h2>\n\n\n\n
1. Deactivate the swap space:<\/p>\n\n\n
\nsudo swapoff -v \/swapfile\n<\/pre><\/div>\n\n\n
2. Remove \/swapfile swap swap defaults 0 0<\/code> line has been entered from the \/etc\/fstab<\/code> file.<\/p>\n\n\n\n
3. Remove swapfile file.<\/p>\n\n\n
\nsudo rm \/swapfile\n<\/pre><\/div>\n\n\n
This is the end of the How To Add Swap Space On Ubuntu<\/strong>.<\/p>\n\n\n\n
Follow us for the more helpful posts!<\/p>\n\n\n\n
We hope this is a useful post for you.<\/p>\n\n\n\n
You can read more useful posts like How To Display Magento 2 Module List<\/a><\/strong>.<\/p>\n\n\n\n
Thank you for reading!<\/p>\n","protected":false},"excerpt":{"rendered":"
n this post, I will guide you on\u00a0How To Add Swap Space On Ubuntu. Use the hard disk as temporary memory to supplement physical memory (RAM) when handling tasks that are larger than the capacity of existing RAM.<\/p>\n","protected":false},"author":106,"featured_media":6155,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[1530,1532,1533,1531,1534],"class_list":["post-5710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magento-2-tutorials","tag-add-swap-space","tag-add-swap-space-on-ubuntu","tag-how-to-add-swap-space-on-ubuntu","tag-swap-space","tag-swap-space-ubuntu"],"yoast_head":"\nHow To Add Swap Space On Ubuntu - Magetop Blog<\/title>\n<meta name=\"description\" content=\"In this post, I will guide you on How To Add Swap Space On Ubuntu. 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