If you are running a webserver, then the server must have enough memory to serve the visitors to the site. Amir Amir 262 1 3 13. Free the whole lot — pagecache, dentries and inodes. In that totally 8 servers running.. Starting with the man pages for commands is always a great way to learn so much more about how a tool works on Linux.
As you can see from the screenshot below, the type of RAM installed on my Ubuntu 18. But what command should I use to get the current memory usage in a format that is easy to log to a text file? Monitoring Memory Usage I'm more in line with one of the preceding posts that mentioned Cacti as a great way to monitor memory usage. How can I monitor the memory usage?
Option 3: As you can see from the marked section of the screenshot below, the RAM used on my Ubuntu 18. Jack Wallen. You can run the following command to do that:. On Ubuntu 18.
Then, on your central server, from which you instead to monitor all your other servers, you can run the following command:. Related Post. For more info on awk, check out https: However it also reports total memory usage and can be used to monitor the total RAM usage.
The output of the dmidecode command. They indicate total, used and free amounts of the memory. For that, there is the free command.
By using the less command, you can scroll up and down through that lengthy output to find exactly what you need Figure 8. The argument MemTotal shows the total amount of usable RAM, in kibibytes, which is physical RAM minus a number of reserved bits and the kernel binary code.
As you can see from the screenshot below, the memtester program is testing the RAM. You should see the following window. The catch over here is the cached and buffers column. Used with permission.