Как уже , the next major update to the Windows 10 operating system, known as 19H2 or 1909, will begin rolling out to users as early as next week. In general, it is believed that this update will not bring major changes to the operating system and will become something like a regular service pack. However, for enthusiasts, it may turn out to be much more important and fundamental, since the expected improvements in the OS scheduler algorithms can increase the single-threaded performance of some modern processors by up to 15%.
We are talking about the fact that the Windows 10 scheduler is going to learn to recognize the so-called "favored core" - the best processor cores with the highest frequency potential. It's no secret that in modern multi-core processors, the cores turn out to be heterogeneous in their frequency characteristics: some of them overclock better, some worse. For quite some time now, processor manufacturers have been marking the best cores that are able to consistently operate at a higher clock speed than the rest of the cores of the same processor. And if you load them with work in the first place, you can achieve higher productivity. For example, Intel Turbo Boost 3.0 technology is based on this, which is now implemented using a special driver.
But now the scheduler of the operating system will be able to recognize differences in the quality of processor cores, which will allow it to distribute the load without outside help in such a way that the cores with the best frequency potential are used in the first place. The official Windows blog says: “A CPU can have multiple favorite cores (logical processors of the highest scheduling class available). To ensure better performance and reliability, we have implemented a rotation policy that distributes work more fairly among these privileged cores."
As a result, under low-threaded loads, the processor can operate at higher clock speeds, providing an additional performance advantage. Intel estimates that choosing the right core for single-threaded scenarios can provide up to 15% performance improvement.
Currently, Turbo Boost 3.0 technology and the allocation of special “successful” cores inside the CPU are implemented in Intel chips for the HEDT segment. However, with the advent of the tenth generation Core processors, this technology should come to the mass segment, so adding its support to standard operating system tools seems like a logical step for Microsoft.
It is worth noting that the core ranking of the scheduler can also have a beneficial effect on the performance of 19rd generation Ryzen processors. AMD, like Intel, marks successful cores in them that can reach higher frequencies. Probably, with the advent of the 2HXNUMX update, the operating system will be able to load them first of all, thus achieving better performance, as in the case of Intel processors.
AMD also spoke about scheduler optimizations for Ryzen processors about the previous update of Windows 10 version 1903. However, then it was about the difference in cores belonging to different CCX modules. Therefore, owners of processors based on AMD processors can also expect performance improvements with the release of update 1909.
Source: 3dnews.ru