{
  "id": 7602142,
  "title": "Performance Improvements in .NET 11",
  "url": "https://urgent.news/2026/09/15/performance-improvements-in-net-11",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-15T17:03:47.000Z",
  "source": {
    "name": "Lobsters",
    "slug": "lobsters",
    "url": "https://devblogs.microsoft.com/dotnet/performance-improvements-in-net-11/"
  },
  "original_language": "en",
  "account": ".NET 11 introduces significant performance enhancements, building upon the groundwork laid by its predecessors. Much like the fictional amplifier in Christopher Guest's \"This Is Spinal Tap,\" .NET 11 represents a noticeable leap forward in performance, despite seeming ludicrous at first glance. The post aims to provide a comprehensive tour through the multitude of real improvements introduced in this major update.\n\nTo begin, let's examine the improvements made to the just-in-time (JIT) compiler. This component plays a crucial role in translating intermediate language (IL) code into native instructions that the CPU executes. By optimizing this process, .NET 11 can benefit application and library code, often with no source code changes required. One key area of improvement is \"deabstraction,\" which involves the runtime analyzing and potentially eliminating unnecessary abstractions, such as virtual calls and interface casts. This optimization can lead to substantial performance gains, especially when the code in question is executed frequently. The post delves into numerous micro-benchmarks demonstrating these enhancements, allowing developers to compare the performance of their code across different .NET versions. As with any benchmarking, it's essential to remember that results may vary depending on hardware, OS, runtime configuration, and other factors. Regardless, the focus remains on the tangible performance gains achieved through .NET 11's continuous optimization efforts.",
  "summary": "As is tradition with an imminent new release of dotnet, Stephen Toub has done a long writeup of what this means with regards to performance improvements. Comments",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}