for large solution, the speed of generating compile_commands.json is very very slow

[paopaol]

is there any way to speed up it?

[mlangkabel]

I don't know the current bottleneck of generating the compilation database. For reference, can you tell us

• the file size of the json file you generated and
• the time it took to generate the file?

[paopaol]

the size of compile_commands.json is 574k. and the solution has 36 projects. it tooks 100s, and the cpu of visual studio 2015 is 45%.my cpu is i5-8250.
A total of 288 source files

[n00bmind]

Same issue here, started pretty fast but then slowed more and more to the point where each project would take several seconds, some taking maybe 5 but some others could stall for up to a full minute.
My solution is huge (around 50 projects), although some of them are C# and hence skipped..

This is Visual Studio Professional v15.7.6.