544005 – buildtimestamp performance improvement

Bug 544005 - buildtimestamp performance improvement

Summary: buildtimestamp performance improvement

Status:	RESOLVED FIXED

Alias:	None

Product:	z_Archived
Classification:	Eclipse Foundation
Component:	Tycho (show other bugs)
Version:	unspecified
Hardware:	All All

Importance:	P3 enhancement (vote)
Target Milestone:	---
Assignee:	Michael Keppler
QA Contact:

URL:
Whiteboard:
Keywords:	noteworthy, performance

Depends on:
Blocks:

Reported:	2019-01-31 09:08 EST by Michael Keppler
Modified:	2021-04-28 16:52 EDT (History)
CC List:	1 user (show)

See Also:	Gerrit Change Git Commit

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Description Michael Keppler

2019-01-31 09:08:22 EST

I've asked for advice in the egit developer list on how to improve performance of the jgit build timestamp provider. Thomas was spot on with his recommendation: https://www.eclipse.org/lists/egit-dev/msg04597.html

Disabling parent rewriting gives a factor of 4 to 5 in local tests for calculation of the build timestamp. I've not yet tested the path filter improvements, but would rather already contribute the first change due to its impact.

Comment 1 Eclipse Genie

2019-01-31 09:10:58 EST

New Gerrit change created: https://git.eclipse.org/r/136082

Comment 2 Eclipse Genie

2019-01-31 10:06:11 EST

Gerrit change https://git.eclipse.org/r/136082 was merged to [master].
Commit: http://git.eclipse.org/c/tycho/org.eclipse.tycho.extras.git/commit/?id=bed4101f7996b50be1858734a64c77dad5955fbd

Comment 3 Mickael Istria

2019-01-31 10:07:07 EST

Thanks a lot for tracking and implementing this performance improvement Michael. This is a very profitable effort!

Comment 4 Mickael Istria

2019-03-05 04:17:07 EST

@Michael, would you mind adding a note about it to https://wiki.eclipse.org/Tycho/Release_Notes/1.4 ?

Comment 5 Michael Keppler

2019-03-05 13:54:51 EST

Sure thing. Done.