My complete test results are below. Ant 1.7.1 has been consistently a lot faster than 1.6.5 which consistently took half the time of 1.7.0. svn trunk's HEAD is consistently faster than 1.7.1.
At the same time memory usage has increased with 1.7.0 and never decreased after that, in fact the current HEAD uses more memory than ever before. Something between revisions 687768 and 693846 has bumped the memory mark without gaining us much in terms of performance, I'll try to isolate and remove that later. The symlink loop detection has cost us a bit of performance but has been compensated by the later tokenization changes (and been more than made up for by VectorSet). Memoization of File.list and File.getCanonicalPath doesn't seem to win much, but before I remove it, I want to try it on a different OS. followsymlinks=false costs a lot of performance, and it seems to suck up memory as well - but this is completely due to File.getCanonicalPath and I don't think there was anything we could do. Stefan Raw test results to follow Method ====== All tests run on the same machine (WinXP) with the same JDK (1.4). For all tests < 60s the values are the median values of three consecutive runs (but to tell the truth, in most cases all three runs yielded the exact same results). Times are what Ant reports itself when it says "Build finished", memory numbers are the maximum values seen while watching the windows task manager - which also means it is the total memory of the Java process which could itself contain an empty heap. Contestants: ============ Ant 1.6.5 Ant 1.7.0 Ant 1.7.1 trunk rev 687768 - PathPattern trunk rev 693846 - pre loop detection trunk rev 694254 - with loop detection trunk rev 695389 - memoization of canonical path trunk rev 696146 - more pre-tokenization work trunk rev 696345 - full pre-tokenization, no File.list memo trunk rev 696355 - bring back memoization of File.list trunk rev 696674 - introduction of VectorSet tests with default settings =========================== matchall -------- Ant 1.6.5 1 min 30 s ~ 19 MB Ant 1.7.0 3 min 53 s ~ 24 MB Ant 1.7.1 10 s ~ 14 MB trunk rev 687768 9 s ~ 19 MB trunk rev 693846 9 s ~ 30 MB trunk rev 694254 10 s ~ 41 MB trunk rev 695389 10 s ~ 39 MB trunk rev 696146 11 s ~ 39 MB trunk rev 696345 10 s ~ 41 MB trunk rev 696355 10 s ~ 43 MB trunk rev 696674 6 s ~ 44 MB roots ----- Ant 1.6.5 1 s ~ 14 MB Ant 1.7.0 3 s ~ 12 MB Ant 1.7.1 0 s ~ ?? MB trunk rev 687768 0 s ~ ?? MB trunk rev 693846 0 s ~ ?? MB trunk rev 694254 0 s ~ ?? MB trunk rev 695389 0 s ~ ?? MB trunk rev 696146 0 s ~ ?? MB trunk rev 696345 0 s ~ ?? MB trunk rev 696355 0 s ~ ?? MB trunk rev 696674 0 s ~ ?? MB recursive-excludes ------------------ Ant 1.6.5 8 s ~ 19 MB Ant 1.7.0 16 s ~ 16 MB Ant 1.7.1 3 s ~ 14 MB trunk rev 687768 3 s ~ 14 MB trunk rev 693846 3 s ~ 24 MB trunk rev 694254 4 s ~ 29 MB trunk rev 695389 4 s ~ 28 MB trunk rev 696146 4 s ~ 28 MB trunk rev 696345 4 s ~ 27 MB trunk rev 696355 4 s ~ 28 MB trunk rev 696674 3 s ~ 31 MB name-matches ------------ Ant 1.6.5 11 s ~ 19 MB Ant 1.7.0 28 s ~ 17 MB Ant 1.7.1 3 s ~ 15 MB trunk rev 687768 3 s ~ 14 MB trunk rev 693846 4 s ~ 31 MB trunk rev 694254 5 s ~ 32 MB trunk rev 695389 5 s ~ 34 MB trunk rev 696146 5 s ~ 38 MB trunk rev 696345 4 s ~ 29 MB trunk rev 696355 5 s ~ 30 MB trunk rev 696674 3 s ~ 35 MB many-patterns ------------- Ant 1.6.5 7 s ~ 19 MB Ant 1.7.0 13 s ~ 17 MB Ant 1.7.1 4 s ~ 17 MB trunk rev 687768 3 s ~ 14 MB trunk rev 693846 4 s ~ 20 MB trunk rev 694254 4 s ~ 23 MB trunk rev 695389 4 s ~ 24 MB trunk rev 696146 4 s ~ 25 MB trunk rev 696345 4 s ~ 29 MB trunk rev 696355 4 s ~ 25 MB trunk rev 696674 3 s ~ 26 MB all --- Ant 1.6.5 1 min 49 s ~ 30 MB Ant 1.7.0 4 min 54 s ~ 44 MB Ant 1.7.1 19 s ~ 43 MB trunk rev 687768 18 s ~ 43 MB trunk rev 693846 19 s ~ 42 MB trunk rev 694254 21 s ~ 43 MB trunk rev 695389 21 s ~ 44 MB trunk rev 696146 21 s ~ 47 MB trunk rev 696345 20 s ~ 47 MB trunk rev 696355 20 s ~ 49 MB trunk rev 696674 11 s ~ 52 MB Case-insensitive scan ===================== all --- Ant 1.6.5 1 min 49 s ~ 30 MB Ant 1.7.0 4 min 53 s ~ 44 MB Ant 1.7.1 19 s ~ 44 MB trunk rev 687768 19 s ~ 43 MB trunk rev 693846 20 s ~ 42 MB trunk rev 694254 21 s ~ 47 MB trunk rev 695389 21 s ~ 46 MB trunk rev 696146 21 s ~ 53 MB trunk rev 696345 20 s ~ 47 MB trunk rev 696355 20 s ~ 48 MB trunk rev 696674 11 s ~ 51 MB No followSymlinks ================= all --- Ant 1.6.5 2 min 20 s ~ 67 MB Ant 1.7.0 5 min 30 s ~ 71 MB Ant 1.7.1 45 s ~ 71 MB trunk rev 687768 40 s ~ 70 MB trunk rev 693846 43 s ~ 71 MB trunk rev 694254 43 s ~ 72 MB trunk rev 695389 43 s ~ 71 MB trunk rev 696146 43 s ~ 70 MB trunk rev 696345 41 s ~ 71 MB trunk rev 696355 42 s ~ 73 MB trunk rev 696674 29 s ~ 73 MB --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
