What are the disadvantages of turning on vt on your computer?

When using many software on the computer, the game will prompt us to turn on VT virtualization technology. The editor has also shared how to turn on VT virtualization technology before. It is usually turned on in the BIOS. Recently, a friend asked the editor what are the disadvantages of turning on VT on the computer, whether it will have any impact on the computer, and whether the life of the computer will be reduced. In fact, the editor wants to say that you are worrying too much.

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First of all, you have to understand what VT is. VT refers to Virtualization Technology. Technology:

CPU virtualization refers to a technology that divides a single computer software environment into multiple independent partitions, and each partition can simulate a computer as needed. Its technical essence is to realize the management and redistribution of computing resources through the intermediate layer to maximize resource utilization. The biggest benefit brought by virtualized partitioning is that the same physical platform can run multiple operating systems of the same or different types at the same time to serve as support platforms for different businesses and applications.

There are two implementation methods of virtualization: traditional pure software virtualization method (no need for CPU to support VT technology) and hardware-assisted virtualization method (requires CPU to support VT technology). The runtime overhead of pure software virtualization will cause the system to run slower, and some data show that the system performance degradation caused by it may reach 5%-20%. Therefore, the efficiency of a CPU that supports VT technology in applications based on virtualization technology will be significantly higher than that of a CPU that does not support hardware VT technology.

VT has roughly two functions:

First, it can improve the performance of virtual machines under virtualization software (such as vmware, etc.);

Second, after it is turned on , you can create a 64-bit virtual machine on a 32-bit host. If it is not enabled, the 32-bit system can only create a 32-bit virtual machine.

So, after understanding VT, you will know that if you use virtualization software, then turn on VT, and the performance will be more or less improved (the improvement in the performance of the virtual machine is not that of your host machine) (Performance improvement) If there are no software or games in your computer that require VT virtualization, it doesn’t matter whether it is turned on or not, and turning on VT virtualization technology will not have any impact on the computer, so you can turn it on with confidence. Generally, the BIOS will enable it by default if the CPU supports it.

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