In Linux, cache memory, swap space, and buffers are used to speed up data access and enhance system performance. However, as these areas accumulate outdated or unnecessary data, they can start to slow down the system. Much like clearing the cache in a browser, knowing how to clear cache...
from http://unix.stackexchange.com/questions/58553/how-to-clear-memory-cache-in-linux Depending on what you want to do you can use 1,2 or 3 fromhttps://www.kernel.org/doc/Documentation/sysctl/vm.txt drop_caches Writing to this will cause the kernel to drop clean caches, dentries and i...
How to flush the DNS cache on Linux? In this section, you will find the commands you can use to flush the DNS cache on different Linux configurations below. Flush Linux DNS using systemd-resolved If your Linux system is systemd-resolved service, you can use one of the following commands ...
your bytes leave the application layer on Host A and travel through the transport and network layers on Host A; then they go down to the physical medium, across the medium, and up again through the various lower levels to the application layer on Host B in much the same way. If...
is being used in swap and in RAM. Once you power it off, you can wait an arbitrary amount of time (30 sec or so) to give the operation time to complete, then power the swap back on. This clears the swap memory cache and re-enables it. Here are all of the commands you'll need...
How to clear the DNS cache in Windows 10 1. Open the Start menu and type “cmd” in the search bar. 2. Right-click “Command Prompt” and select “Run as administrator.” 3. In the Command Prompt window, type ipconfig /flushdns and press Enter. 4. You will see a message confirm...
Manipulating Processes to list processes running on your system at a particular time. The ps command lists current processes, but it does little to tell you how processes change over time. Therefore, it won’t really help you to determine which process is using too much CPU time or memory....
This chapter takes you deeper into the relationships between processes, the kernel, and system resources. There are three basic kinds of hardware resources: CPU, memory, and I/O. Processes vie for these resources, and the kernel’s job is to allocate resources fairly. The kernel itself is al...
Linux has different set of commands to check the usage of memory. The free command shows the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel. It is important to check memory usage so that resources do not fall short and ...
In this article, we saw how to keep and check memory usage history in Linux. Overall, we saw three ways for this: atop sar the Zabbix monitoring tool Whileatopandsysstatoffer command-line solutions for collecting and analyzing memory data, Zabbix provides a centralized platform for comprehensive...