Bug 220568 - [performance] Regression in some warm open performance tests
Summary: [performance] Regression in some warm open performance tests
Status: RESOLVED WONTFIX
Alias: None
Product: JDT
Classification: Eclipse Project
Component: UI (show other bugs)
Version: 3.4   Edit
Hardware: PC Windows XP
: P3 normal (vote)
Target Milestone: 3.4 RC1   Edit
Assignee: JDT-UI-Inbox CLA
QA Contact:
URL:
Whiteboard:
Keywords: performance, test
Depends on:
Blocks:
 
Reported: 2008-02-27 10:10 EST by Frederic Fusier CLA
Modified: 2008-05-06 08:07 EDT (History)
2 users (show)

See Also:


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Frederic Fusier CLA 2008-02-27 10:10:27 EST
Verifying build I20080226-1155, it looks like some warm open tests are red:
 - OpenTypePerfTest#testWarmException():   between  -5.0% and -50.6%
 - OpenTypePerfTest#testWarmException10(): between  -7.1% and -16.3%
 - OpenTypePerfTest#testWarmOpenSWT():     between  -7.4% and -18.0%
 - OpenTypePerfTest#testWarmS10():         between -11.0% and -15.7%
Comment 1 Dani Megert CLA 2008-05-06 06:17:49 EDT
This is due to colored labels which are now enabled per default. The penalty is small when looking at absolute numbers (at most 40ms). The big regressions (50% or more) are on the machine with 512MB and there the tests are very unstable. I suspect that GCs happen sometimes.

Closing as works for me, as the penalty is very small. There's also an open bug report to even further improve the colored label performance (see bug 228017).
Comment 2 Frederic Fusier CLA 2008-05-06 08:03:27 EDT
Looking at comment 1, I would expect to see this bug closed as WONTFIX rather than WORKSFORME: the regression exists but assumed that it was not big enough to be fixed.
Comment 3 Dani Megert CLA 2008-05-06 08:07:13 EDT
.