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Bug 337950

Summary:	[perfs] Regression in SeparateVMTests and OpenAntEditor tests
Product:	[Eclipse Project] Platform	Reporter:	Satyam Kandula <satyam.kandula>
Component:	Ant	Assignee:	Pradeep Balachandran <pradeepb>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	normal
Priority:	P3	CC:	curtis.windatt.public, daniel_megert, Lars.Vogel, Michael_Rennie, satyam.kandula
Version:	3.7	Keywords:	performance
Target Milestone:	---
Hardware:	PC
OS:	Windows XP
Whiteboard:
Bug Depends on:
Bug Blocks:	348419

Description Satyam Kandula

2011-02-23 05:07:03 EST

There is about 40-70% performance regression in the  org.eclipse.ant.tests.ui.editor.performance.SeparateVMTests and around 10% regression in OpenAntEditor. This is first seen on 12th Feb.

Comment 1 Michael Rennie

2011-04-14 16:26:38 EDT

The regression began once the update to Ant 1.8.2 went live.

I was expecting a bit of a dip in the editor performance as we changed the caching scheme to not hold onto a huge DOM object, and in doing so we incur a slight bit more processing which accounts for the few extra milliseconds extra.

I am still looking into the separate VM regression. We made some changes to do extra work cleaning up after and during launches to avoid the incremental OOME problem we have been plagued with (bug 130545), but I have no hard evidence yet was is causing such a large regression.

Comment 2 Dani Megert

2011-06-03 05:03:00 EDT

Ping.

Comment 3 Curtis Windatt

2011-06-03 16:43:58 EDT

No changes are planned here for 3.7, moving to 3.8 for now.

Comment 4 Michael Rennie

2012-03-01 15:03:55 EST

no changes planned here for 3.8 either. We can compare the performance change when we update to Ant 1.8.3 as well.

Comment 5 Lars Vogel

2019-08-27 10:50:12 EDT

Bug is getting to too, we have to look again once the performance test are running again.