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• #Root memory cleaner how to#

In this article, we saw how to clear the memory cache on a Linux system. # sync echo 3 > /proc/sys/vm/drop_caches # clear all 3 # sync echo 2 > /proc/sys/vm/drop_caches # clear dentries and inodes If you are running a system that doesn’t use systemd, you can use the following commands to accomplish the same thing as the respective systemctl commands: # sync echo 1 > /proc/sys/vm/drop_caches # clear PageCache You can now use the free command or top to check your system’s RAM usage and verify that the cache has been cleared. To clear PageCache, plus dentries and inodes, use this command: $ sudo sysctl vm.drop_caches=3 To clear dentries and inodes, use this command: $ sudo sysctl vm.drop_caches=2 To clear PageCache only, use this command: $ sudo sysctl vm.drop_caches=1 The majority of the most popular Linux distros use systemd these days, thus a systemctl command can be used to clear the memory cache. This cache also cuts down on disk input and ouput operations. This information goes hand in hand with PageCache, although it doesn’t contain the actual contents of any files. This puts less read and write impact on a hard drive and increases speed since files can be read from RAM much faster.ĭentry and inode cache is directory and file attributes. Files that were recently accessed are stored here so they will not need to be queried from the hard disk again, unless that file changes or the cache is cleared to make room for other data. You should start by familiarizing yourself with the following terms. There are three types of caches that we’ll be learning to clear in this guide. What is PageCache, dentry, and inode cache? $ – requires given linux commands to be executed as a regular non-privileged user

# – requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command Privileged access to your Linux system as root or via the sudo command. Requirements, Conventions or Software Version Used Software Requirements and Linux Command Line Conventions Category Clearing memory cache and using free command to show before and after result