fs2.changeset(cset);
// hgRepo.getManifest().getFileRevision(TIP, fname);
final long start1 = System.nanoTime();
boolean e1 = fs1.checkExists(fname);
final long end1 = System.nanoTime();
boolean e2 = fs2.checkExists(fname);
final long end2 = System.nanoTime();
Nodeid fr = hgRepo.getManifest().getFileRevision(TIP, fname);
final long end3 = System.nanoTime();
System.out.printf("\t1st run: %d ms, %b\n\t2nd run: %d ms, %b\n\tfile only: %d ms", (end1 - start1) / 1000000, e1, (end2 - end1) / 1000000, e2, (end3-end2)/1000000);
if (!fr.equals(fs1.revision()) || !fr.equals(fs2.revision())) {