[Scons-users] SCons very slow on GitHub actions

Mats Wichmann mats at wichmann.us
Wed Apr 30 16:13:17 EDT 2025


On 4/30/25 14:09, Bill Deegan wrote:
> It could be chalked up to Microsoft making server 2025 "better".... ;)
> 
> I wonder if it's doing more anti-virus'y checking on each launched process?
> 
> 
> On Wed, Apr 30, 2025 at 12:17 PM Leonard de Ruijter 
> <alderuijter at gmail.com <mailto:alderuijter at gmail.com>> wrote:
> 
>     Yes, I tried that option but it doesn't give extra insight
>     unfortunately.
> 
>     I just tried the windows-2019 image and it is way faster. 10 seconds
>     total script reading time, compared to 70 seconds on 2022 and 2025. The
>     2019 image only has Visual Studio 2019 installed.
> 
>     Python version (e.g. 3.13) is still slow on 2022/2025 images.

At this point just flailing around, but could this be a factor?

https://news.ycombinator.com/item?id=42782553




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