davidmyersdev/vite-plugin-node-polyfills

Large performance impact on vitest on latest version

kyle-sawatsky opened this issue · 2 comments

kyle-sawatsky commented

I was updating my dependencies and noticed a large performance decrease when running our test suite. A regular run time is 5 minutes, but it became 30 minutes after dependency updates.

I tracked it down to this package when I updated from 0.14.1 to 0.16.0.
I haven't been able to verify the exact cause but it appears to cause a massive slowdown in resolution/loading of modules.

I noted that it took multiple times longer for the first test file to even start executing and there were numerous times in the test run when no tests at all were executing as it was stuck loading/resolving.

This is not a big deal as there's no pressing need to update but thought it might be helpful to know.

mer10z commented

This might be related to #35. I just upgraded from 0.7.0 to 0.17.0 and my vitest jobs went from 15 minutes to 50 minutes before failing with a heap out of memory error.

davidmyersdev commented

I appreciate the context. I am closing this in favor of #35.