Usually it depends on what you need to run. Running some tests on an interpreted language should be done in a few minutes. With a compiled language it takes longer, maybe half an hour. If you have a compiled language that's slow to compile with additional checks, because the language is more footgun than anything (yes, C++) then you might want a standard build, build with various sanitizers, and do some static analysis, and you end up with hours of time spent on building and analysis.

It really depends on what you're trying to achieve and how big the project is.