What's here?

This website has benchmarks and tools used by the Android VM team.

Other useful sites

You might want source to the Dalvik VM or the source to the accompanying core libraries

If you want to submit a patch to the Dalvik VM, see https://review.source.android.com/.

If you want to report a bug against Dalvik or libcore, see http://code.google.com/p/android/issues/list.

If you're looking for the SDK or general Android development documentation, see the Android Developers site.