How to configure your system swap settings optimally This behavior can be adjusted by defining the swappiness in the nf file. My advice is to bring this value down from 60 to 10, which means that swap comes into operation when 90% of the physical RAM is in use, or when 10% of the memory is still available. This standard turning point of 60 is in my opinion a bit too cautious, especially if you have an older system with only 2 or 4 GB of internal memory, which means that your system is continuously switching in and out of swap. For example in Linux Mint, but also in some other Ubuntu based systems, the default value for the threshold is 60, which must be interpreted as that the swap virtual memory comes into operation when 40% of the physical RAM is in use, or when 60% of the memory is left available. The before mentioned swap process is based on a certain threshold. So let’s find out how we can optimize our memory settings in Linux, or in other words, how to configure our system swap settings optimally. But in practice some Linux systems switch over much too soon. But using swap, which is based on your hard drive or SSD, as virtual memory, is of course much slower than your physical internal memory, so it should be used only when this additional memory is really required. The swap is a technique to use a special swap partition or swap file as additional virtual working memory, when the Operating System thinks that is required. It is done in such a way that if your memory usage reaches a certain threshold or percentage of the total internal memory that is available for your Operating System, it is switching over to use what is called the swap space. The solution should work on most Linux distributions, including Ubuntu and its derivatives.Many Linux distributions are not optimally configured out of the box. The command you added to the /etc/nf file should run automatically during system startup, ensuring that you do not face the same issue again. You can use any editor you prefer.Īdd the following line at the end of the file: # Fix problem where vmware battles with kcompactd0.įinally, restart your Linux system to apply the changes. This command opens the file in the gedit editor. To open the /etc/nf file, run the following command: $ sudo gedit /etc/nf To do this, you need to add the command to the /etc/nf file, which is executed during system startup. If you are satisfied with the performance of the virtual machine, you can make the changes you made in step 2 permanent. You should notice a significant improvement in performance, and the vmware-vmx process should no longer consume 100% of the CPU. Once you have modified the kernel’s memory management settings, start the virtual machine again. This command changes the kernel’s memory management settings and disables proactive compaction, which is the cause of the issue. Next, open a terminal window and run the following command: $ sudo sysctl vm.compaction_proactiveness=0 You can do this by clicking on the power-off button in the Vmware console or by running the following command: $ sudo vmware-cmd /path/to/virtual/machine stop hard Step 2: Modify the Kernel’s Memory Management Settings Here are the steps you can follow: Step 1: Stop the Virtual Machineįirst, stop the virtual machine that is causing the issue. To fix this issue, you need to run a command that modifies the kernel’s memory management settings. This issue is usually caused by a conflict between vmware-vmx and the kcompactd0 process, which manages kernel memory. However, the host operating system remains relatively unaffected. When you run virtual machines on Vmware, the vmware-vmx process might eat up 100% of the CPU, which makes the virtual machine unresponsive.
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