Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
5,278 questions
C++ solution builds are slow when multiple instances of VS2019 are active
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(16, 1%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAW%3C/text%3E%3C/svg%3E)
Alan Weir
1
Reputation point
I have multiple c++ solutions and if I open a single instance of VS2019 and edit/build the build time is reasonable an comparable to using msbuild in a command window.
However, as I open up more VS2019 instances the compile time degrades significantly and takes 2 - 5 times longer than when there was a single instance. This appears to be especially true if I have been debugging in one of the other instances. I have been using multiple instances of VS since VS6 and only noticed this issue with VS2019. This also occurs on all my machines which are 8 core 2.4Ghz with SSHD and 64Gb RAM.
Visual Studio
{count} votes
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(9.6, 11%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDZ%3C/text%3E%3C/svg%3E)
Dylan Zhu-MSFT 6,421 Reputation points2021-01-15T03:20:34.823+00:00 Hi @Alan Weir , please go to Tools -> Options -> Projects and Solutions -> VC++ Project Settings -> Build Timing, then build your project, and the complete build time will be printed to output window. And if possible, please share the strange logs you think in private mode here.
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(224.00000000000003, 45%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ENW%3C/text%3E%3C/svg%3E)
Nigel Wright 291 Reputation points2021-02-02T02:22:46.523+00:00 How much memory does your pc have ?
Sign in to comment
Sign in to answer