Bug 517160 - Team Synchronize Workspace is very slow
Summary: Team Synchronize Workspace is very slow
Status: NEW
Alias: None
Product: EGit
Classification: Technology
Component: UI (show other bugs)
Version: 4.6   Edit
Hardware: PC Linux
: P3 major (vote)
Target Milestone: ---   Edit
Assignee: Project Inbox CLA
QA Contact:
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Keywords: needinfo
Depends on:
Blocks:
 
Reported: 2017-05-24 04:31 EDT by Panos Kavalagios CLA
Modified: 2018-07-25 09:53 EDT (History)
2 users (show)

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Description Panos Kavalagios CLA 2017-05-24 04:31:24 EDT 
The "Team -> Syncrhonize Workspace" for a git project is very slow. I have measured a time for 2 minutes and 36 seconds for the Eclipse ID to respond and it consumes 100% of a CPU core during that time. It used to take few seconds.
Comment 1 Andrey Loskutov CLA 2017-05-24 04:33:27 EDT 
(In reply to Panos Kavalagios from comment #0)
> It used to take few seconds.

... used ... but WHAT is happened on your side? New egit version? New Eclipse version? Different project to synchronize? More code in the project? A little bit more info would definitely help.
Comment 2 Panos Kavalagios CLA 2017-05-24 04:57:18 EDT 
Same project and no change. The change from yesterday in the system was the updated:

ffmpeg-libs-3.1.8-1.fc25.x86_64
libavdevice-3.1.8-1.fc25.x86_64
ffmpeg-3.1.8-1.fc25.x86_64

which I don't believe to affect Eclipse/git. Git was updated on May 16th to git-2.9.4-1 from git-2.9.3-3, but the issue is observed today with many local changes. 

Indeed, there are 6466 outgoing changes in the sync view and that's the great difference and not a typical scenario. I have reduced the size of the local changes to 30 and it is very fast again. So, we can say it is slow when there are many local changes.
Comment 3 Thomas Wolf CLA 2017-05-24 05:59:10 EDT 
Which EGit version are we talking about exactly? What model providers are enabled? Is it any better with EGit nightly? (There has been a recent change in that area that was supposed to improve performance; see bug 516358.)
Comment 4 Panos Kavalagios CLA 2017-05-24 10:19:17 EDT 
I am using latest Eclipse Java EE Neon R3 (4.6.3) fully updated with:

Git integration for Eclipse 4.6.1.201703071140-r

The option "Allow Models" in Team -> Git -> Synchronize is enabled.

I have installed the nightly built:

Git integration for Eclipse	4.8.0.201705221216

to no avail. In fact, it makes things worse. It now requires 3 minutes and 26 seconds to display the synchronise view. The 4.8 version is about 40% slower than the previous version 4.6.1.
Comment 5 Thomas Wolf CLA 2018-07-25 09:53:35 EDT 
See bug 537288: with Photon/EGit 5.0, Panos' use case now appears to take more than an hour. Still unclear why. It's even unclear whether the problem is in EGit or Team. Deeply nested maven projects may have something to do with it; or perhaps simply nested projects.