Tests on Ubuntu 8.04, Java 1.6, I only tested two svn revisions and 1.7.1 (and used top instead of task manager in my highly scientific approach to measure memory consumption 8-)
The trends are the same. Even though the machine is a lot slower than my work Windows system the times are comparable. I guess Linux' tempfs is quite a bit faster than a real NTFS formatted disk. The pre-tokenization changes have a stronger effect, though. My guess - again - is that scanning is stronger I/O bound on the Windows machine and CPU bound on tempfs on Linux. It also seems as if I needed to modify the test setup to make it even larger if I want to compare further tweaks. Interestingly the effect of followSymlinks=false is far less dramatic on Linux than on Windows. I removed memoization of File.list and File.getCanonicalPath (only local, not yet committed) and it didn't change much, so I'll probably remove it completely. I added a new many-roots tests (not part of the timings for "all" below) that should be sensitive to memoization and pre-tokenization. tests with default settings =========================== matchall -------- Ant 1.7.1 15 s ~ 20 MB trunk rev 696355 12 s ~ 34 MB trunk rev 696674 2 s ~ 29 MB no memoization 2 s ~ 20 MB roots ----- Ant 1.7.1 0 s ~ ?? MB trunk rev 696355 0 s ~ ?? MB trunk rev 696674 0 s ~ ?? MB no memoization 0 s ~ ?? MB recursive-excludes ------------------ Ant 1.7.1 2 s ~ 14 MB trunk rev 696355 2 s ~ 13 MB trunk rev 696674 1 s ~ 19 MB no memoization 1 s ~ 21 MB name-matches ------------ Ant 1.7.1 3 s ~ 19 MB trunk rev 696355 3 s ~ 31 MB trunk rev 696674 2 s ~ 24 MB no memoization 1 s ~ 20 MB many-patterns ------------- Ant 1.7.1 4 s ~ 21 MB trunk rev 696355 4 s ~ 28 MB trunk rev 696674 1 s ~ 35 MB no memoization 1 s ~ 22 MB all --- Ant 1.7.1 20 s ~ 41 MB trunk rev 696355 20 s ~ 44 MB trunk rev 696674 6 s ~ 43 MB no memoization 5 s ~ 44 MB many-roots ---------- Ant 1.7.1 14 s ~ 27 MB trunk rev 696674 2 s ~ 35 MB no memoization 2 s ~ 30 MB Case-insensitive scan ===================== all --- Ant 1.7.1 21 s ~ 40 MB trunk rev 696355 20 s ~ 44 MB trunk rev 696674 6 s ~ 43 MB no memoization 5 s ~ 43 MB No followSymlinks ================= all --- Ant 1.7.1 25 s ~ 38 MB trunk rev 696355 24 s ~ 45 MB trunk rev 696674 9 s ~ 45 MB no memoization 8 s ~ 45 MB --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
