It will be interesting to look at the first previews benchmarks. However some points will be still relevant: structure’s values with pointers will necessarily be larger thereby reducing the amount of CPU cache available for other things.
Visual studio 2022 key 64 bits#
Nowadays 64 bits processors handle 64 bits registers as fast as 32 bits ones. Let’s note that some of these points might be outdated. “most of the time, staying with 32-bit and reducing the amount of memory being consumed will have a much larger impact for both the application and the operating systems as a whole”.Any packages that really need that much memory could be built in their own 64-bit process and seamlessly integrated into VS without putting a tax on the rest. “Most of Visual Studio does not need and would not benefit from more than 4G of memory.
Visual studio 2022 key code#
You will fit less useful information into one cache line, code and data, and you will therefore take more cache misses.
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Moving to 64 bits doesn’t necessarily mean more performance. Will moving an application from 32-bit to 64-bit potentially reduce performance? As a consequence they tend to consume an amount of memory linear with the amount of code loaded. These services need to have a somehow holistic view of the VS solution, or at least of all VS projects loaded. Notice that it is especially worth running out-of-proc the languages services (intellisense, analysis, compiler…). Hence it certainly contributed to postpone the 圆4 migration until now. This architecture helps a lot in reducing the memory pressure within devenv.exe. Since the introduction of Roslyn within Visual Studio 2015, the trend has been to process more and more IDE data in child processes whose parent is the main devenv process. Given the scale of the Visual Studio code base, this certainly leads to a lot of migration work. Thus when migrating from x86 to 圆4, COM interop signature and structure alignment/marshalling change. Let’s remind that IntPtr.Size is 4 bytes in a 32 bits process and 8 bytes in a 64 bits process as long as the “Prefer 32-bit” option is turned off. But when dealing with COM interop, the size of pointers matter. NET An圜PU code, the underlying 32 or 64 bits runtime architecture is transparent.
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Some quick statistics obtained with NDepend over all of the 1 675 Visual Studio 2019 assemblies shows 198 192 managed types and 1 517 309 methods! The stats diff is against Visual Studio 2017.Īmong the 198K types a code query based on matches 12 024 COM interop interfaces and classes visible to COM! To communicate these different layers use COM Interop and it was certainly quite a challenge to manage the migration of this ‘glue’ layer from 32 bits to 64 bits.īy looking for the word Interop under C :\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7 118 DLLs are matched. Visual Studio has been around for more than two decades and as a result, the IDE implementation mixes a few different technical stacks: native code, managed code (and even UI stacks like WinForms and WPF). The Visual Studio 圆4 migration is a massive move But why did it take almost 2 decades to get a 64 bits version of VS? In this post I’d like to highlight some publicly available history facts that might shed light on the history. When working on a large solution, it is not uncommon to restart Visual Studio several times a day.Ħ4-bit computing started to trickle down to the Personal Computer desktop from 2003 onward. This leads to substantial slow down and even to some OutOfMemoryException crashes.
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The actual problem with devenv being a 32 bits process, is that large VS solutions (say 10K+ classes) tend to saturate the 2GB limit. Finally after all these years of waiting Visual Studio 2022 will run in a 64 bits process on 64 bits machines! As a consequence the effective process address space of the main Visual Studio process devenv won’t be limited anymore to 2GB.