{"id":42195,"date":"2022-09-12T09:13:45","date_gmt":"2022-09-12T16:13:45","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/dotnet\/?p=42195"},"modified":"2024-12-13T15:11:14","modified_gmt":"2024-12-13T23:11:14","slug":"arm64-performance-improvements-in-dotnet-7","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet\/arm64-performance-improvements-in-dotnet-7\/","title":{"rendered":"Arm64 Performance Improvements in .NET 7"},"content":{"rendered":"

The .NET team has continued improving performance in .NET 7, both generally and for Arm64. You can check out the general improvements in the excellent and detailed Performance Improvements in .NET 7<\/a> blog by Stephen Toub. Following along the lines of ARM64 Performance in .NET 5<\/a>, in this post I will describe the performance improvements we made for Arm64 in .NET 7 and the positive impact it had on various benchmarks. Stephen did touch upon some of the work in his blog post, but here, I will go through some more details and wherever possible include the improvements we have seen after optimizing a specific area.<\/p>\n

When we started .NET 7, we wanted to focus on benchmarks that would impact wide range of customers. Along with the Microsoft hardware team, we did lot of research and thinking on what benchmarks should we pick that can improve the performance of both client and cloud scenarios. In this blog, I will start by describing the performance characteristics that we thought are important to have, the methodology we used, the criteria we evaluated to select the benchmarks used during .NET 7 work. After that, I will go through the incredible work that has gone into improving .NET’s performance on Arm64 devices.<\/p>\n

Performance analysis methodology<\/h2>\n

The instruction set architecture<\/a> or the ISA of x64 and Arm64 is different for each one of them and this difference is always surfaced in the form of performance numbers. While this difference exists between the two platforms, we wanted to understand how performant .NET is when running on Arm64 platforms compared to x64, and what can be done to improve its efficiency. Our goal in .NET 7 was not only to achieve performance parity between x64 and Arm64, but to deliver clear guidance to our customers on what to expect when they move their .NET applications from x64 to Arm64. To do that, we came up with a well-defined process to conduct Arm64 performance investigations on benchmarks. Before deciding which benchmarks to investigate, we narrowed down the characteristics of an ideal benchmark.<\/p>\n