I think part of the slowness in my case is I use

rglob(‘java/*.java’)

in most BUILD files. From what I can tell, rglob will traverse all directories, then match them against the pattern. If there are many other unrelated files (outside of

java/

) this is very slow. For example, if I run it in the root of my source tree, which has no

java/

directories at that level, it takes 1 minute 23 seconds and finds nothing.