Hi,while investigating startup and footprint for jigsaw, I found this unrelated oddity where java.io.UnixFileSystem is missing an opportunity to deduplicate file paths determined to be equal when putting them into its internal cache. Also avoid some recalculation of paths determined to be canonical for no good reason and we're golden:
webrev: http://cr.openjdk.java.net/~redestad/8140683/webrev.01 bug: https://bugs.openjdk.java.net/browse/JDK-8140683 /Claes
