Bug 48739 - Build Workspace is slow
Summary: Build Workspace is slow
Status: RESOLVED WORKSFORME
Alias: None
Product: JDT
Classification: Eclipse Project
Component: Core (show other bugs)
Version: 3.0   Edit
Hardware: PC Windows 2000
: P3 normal (vote)
Target Milestone: 3.0 M7   Edit
Assignee: Kent Johnson CLA
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Reported: 2003-12-15 08:21 EST by Andrew Ballance CLA
Modified: 2004-01-06 13:49 EST (History)
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Description Andrew Ballance CLA 2003-12-15 08:21:09 EST 
First not sure if this is the right categorisation. I'm using Eclipse as a Java 
IDE. Is JDT-Core the right place to post? Apologies if it isn't.

Dynamic building in the M5 build (compared to the M4 build) is very slow. I 
have a project with many source folders and in the order of 1000 java source 
files. Each source folder has its own build directory. The build runs as a 
background task and will prevent a refresh from the OS, for example. I had 
never seen this before. Is the build workspace a new task in Eclipse? Is there 
any reason why the build workspace could have slowed down? Is this a new task? 
I don't remember seeing it before. Has anyone else observed a slowdown?
Comment 1 Philipe Mulet CLA 2003-12-15 08:48:40 EST 
Build is now occurring in background as a consequence of the effort to improve 
responsiveness.

What exactly do you observe as a difference ? Could you provide steps to 
reproduce ?
Comment 2 Andrew Ballance CLA 2003-12-15 09:24:44 EST 
I can't provide any 'steps to reproduce' if it is a change in Eclipse, now can 
I?
I'm sorry, I can't really tell you much apart from that it takes longer than in 
the previous stable build. A build now could take 20 seconds or more(especially 
if it's the 'common' package). Would you like to see the .project & .class 
files? Is there anything else (logging?) that I can upload?
Comment 3 Kent Johnson CLA 2003-12-15 10:28:43 EST 
Do you still have the M4 drop? If not you can download it again.

Please time a normal build of your project using M4 & M5 on the same workspace.
Comment 4 Kent Johnson CLA 2004-01-05 10:08:14 EST 
Andrew: Can you get us times so we can compare?
Comment 5 Andrew Ballance CLA 2004-01-06 04:31:39 EST 
Sorry I haven't had time to do this - Eclipse seems to have become v. unstable 
on my machine lately (no I'm not reporting that as a bug!) and the Project 
structure has changed in the past few weeks. Sorry about that!
Comment 6 Kent Johnson CLA 2004-01-06 13:49:30 EST 
Andrew, reopen this PR when you can provide the numbers.

FYI: Our numbers show that the builder is faster.