computer performance

How to speed up a VirtualBox virtual machine

Posted by Alex On August 15, 2023

What to do to speed up VirtualBox On the same computer, a VirtualBox virtual machine can have different performance and responsiveness. The following are a few ways to speed up the virtual machine. 1. Enable the I/O Caching option Enabling “Use Host I/O Cache” for virtual machine disks can dramatically improve virtual machine performance. See “Terrible VirtualBox disk performance (SOLVED)”...

Terrible VirtualBox disk performance (SOLVED)

Posted by Alex On August 15, 2023

The performance of a virtual machine depends on the resources allocated to it (the number of CPU cores, the amount of RAM) and on the number of running programs in the virtual machine and their resource requirements. This is logical and works about as intuitively expected. But with heavy use of the disk in a virtual machine, its performance drops...

How to move VirtualBox virtual machines to another drive or computer

Posted by Alex On August 15, 2023

Migration of VirtualBox virtual machines VirtualBox virtual machines can be transferred in whole or in part (for example, only virtual disks) within the same computer (for example, to a faster SSD), as well as between computers. This note will tell you how to properly migrate VirtualBox virtual machines without the need for a long setup afterwards. Important: moving virtual machines...

How to increase the swap partition in Linux Mint and Ubuntu. How to create a Swap file in Linux

Posted by Alex On July 2, 2022

In this article, using Linux Mint and Ubuntu as an example, we will learn how to view information on the swap partition, create a swap file, and also increase the space available for swap. The swap file is a specific place on permanent storage (for example, on a hard disk), where data that does not fit in RAM is temporarily...

Swap file and swap partition in Arch Linux (BlackArch): what to choose and how to add Swap

Posted by Alex On July 1, 2022

RAM, along with the central processor, is a determining factor in the performance of a computer. Moreover, the speed (frequency) of RAM is not so important, how important is its quantity – the amount of RAM. The computer starts to work much slower if it does not have enough RAM. Moreover, if it has a swap partition, then it can...

How to clean up Windows 11 without additional programs

Posted by Alex On January 25, 2022

Do I need to clean and optimize Windows 11 after installation Operating systems, be it Windows, Android or even Linux, can be used to promote products and services. Therefore, at present, one of the main questions after reinstalling the OS is not how to install new programs, but how to remove pre-installed ones. For unnecessary, useless software that is installed...

How to determine the type and speed of a USB port

Posted by Alex On November 28, 2021

How to determine the version and speed of the USB port? It would seem that to say which version and speed of the USB connector on a computer is a trivial task. As it was before? The black connector is USB2 and the blue connector is USB3. Right? This information has long been outdated, in modern motherboards and laptops, blue...

Comparison of performance (data transfer rate) of OpenVPN over UDP and TCP

Posted by Alex On November 25, 2021

The previous article showed how to use OpenVPN with TCP instead of the default UDP. It is also known that the use of the TCP protocol is not recommended because, due to the “overhead” of the TCP transport protocol, less payload will be transmitted, since part of the channel will be occupied by the transmission of overhead information necessary to...

What happens if Linux runs out of RAM. Do I need a Swap file

Posted by Alex On November 20, 2021

Linux installers create a swap file or partition by default. The Swap file is used when the RAM is full, in this case the system writes part of the data that is not needed right now from the RAM to the Swap file, which somewhat unloads the RAM. Subsequently, the system can re-move the data from the Swap file into...

What are the differences and how to use the kill, pkill and killall commands

Posted by Alex On October 30, 2021

How to shutdown a process by process id Each of the kill, pkill and killall commands are used to stop processes in Linux. In “How to use ps command to monitor Linux processes”, we looked at a number of ways to identify processes, including name, command, user, and terminal. We also looked at ways to identify processes by their dynamic...