Re: [egit-dev] Branch switching vs Incremental builds

["David M Williams" <david_williams@xxxxxxxxxx>]

I'm only half able to follow this discussion,
and not sure if you got your main question answered? 

But, I do know some projects do have
to call, under the covers, "auto build off" (if it is on) and
then later, restore it. 

For example, in WTP, projects can be
"related" in ways that JDT and the Platform know nothing about.
For Example, and EJB project might use several WAR projects. 

Since "domain specific" it
would be up to the higher level project to provide that logic, not the
Platform nor JGit. 

Apologies in advance if my answer is
not related to your question. :) 




From:      
 Jesper Skov <jskov@xxxxxxxxxxxx>
To:      
 "'Matthias Sohn'"
<matthias.sohn@xxxxxxxxx>, 
Cc:      
 "'egit-dev@xxxxxxxxxxx'"
<egit-dev@xxxxxxxxxxx>
Date:      
 08/24/2015 09:00 AM
Subject:    
   Re: [egit-dev]
Branch switching vs Incremental builds
Sent by:    
   egit-dev-bounces@xxxxxxxxxxx

---

Thanks.
 
I found the code in question,
and cannot explain the behaviour I see from it.
 
It must be due to something
else in Eclipse / JDT.
 
I guess I’ll have to enable
some tracing to find out, what is causing the per-file refreshes.
 
Thanks for your input!
Cheers,
Jesper Skov
Digitale Medarbejdere

T +45 89 89 29 89 Vestergade 8-16 | 8600  Silkeborg CVR-nr. 17 61 66 17 Jyske Mobilbank med Swipp- send penge nemt og hurtigt

Fra: Matthias Sohn [mailto:matthias.sohn@xxxxxxxxx]
Sendt: 24. august 2015 14:57
Til: Jesper Skov <jskov@xxxxxxxxxxxx>
Cc: Alex Blewitt <alex.blewitt@xxxxxxxxx>; egit-dev@xxxxxxxxxxx
Emne: Re: [egit-dev] Branch switching vs Incremental builds
 
EGit refreshes the workspace after
a checkout since JGit changes the files changing due to the checkout
directly on the file system and
hence doesn't send Eclipse events usually sent when a file changes content.
Not sure how JDT decides what needs
to be rebuilt after a workspace level refresh.
 
On Mon, Aug 24, 2015 at 12:26 PM,
Jesper Skov <jskov@xxxxxxxxxxxx>
wrote:
The builder we use is custom
made (it invokes an external Gradle wrapper).
 
Our builder does not come
into play (it is both disabled, and it is silent in the log – so I am
sure about that).
 
The long refresh happens
in the JDT compiler after “Git Repository refresh” completes.
The Progress view shows that
“Refreshing workspace” is running.
 
 
So it is not related to Gradle.
 
 
 
I agree on the changed files;
not many are actually touched on disk (or at least their date remains unchanged).
That’s why I thought it
had to be somehow releated to how eGit reports changes to Eclipse.
 
Cheers,
Jesper Skov

Fra: Alex Blewitt [mailto:alex.blewitt@xxxxxxxxx]
Sendt: 24. august 2015 12:18
Til: Jesper Skov <jskov@xxxxxxxxxxxx>
Cc: egit-dev@xxxxxxxxxxx
Emne: Re: [egit-dev] Branch switching vs Incremental builds
 
Using Gradle is the problem. 
 
When EGit changes branch, only
the files that are different are changed. The Gradle builder probably doesn't
keep track of which files are new and so plays it safe by recompiling everything.
 
 
Alex

Sent from my iPhat 6

On 24 Aug 2015, at 10:35, Jesper Skov <jskov@xxxxxxxxxxxx>
wrote:
We have been using eGit for a long time
without problems.
 
But recently, a big project was moved from
SVN to Git, and it is causing some performance problems with eGit (4.0.0
in Mars, Windows 7).
 
The project has 3600 java files in 25 projects,
taking some 5 minutes to compile.
 
 
 
When I switch to a new branch, it looks
like all java files are recompiled (individually, or batched, I don't know).
So this takes around 5 minutes.
 
But this recompilation takes place in the
context of the old branch.
 
The new branch may have other dependencies,
and these are not updated until the Workspace refresh completes, and the
project builders are invoked.
We use Gradle for this, so project settings
are changed, causing another full build.
 
 
I wonder if the JDT incremental builder
can be disabled while eGit makes changes to the workspace?
 
 
Or is something else at play?
If I disable Build Automatically, the branch
switch will take the same amount of time.
And files will be processed via org.eclipse.jdt.internal.core.DeltaProcessor.resourceChanged.
 
 
Thanks,
Jesper Skov
Digitale Medarbejdere

T +45 89 89 29 89 Vestergade 8-16 | 8600  Silkeborg CVR-nr. 17 61 66 17 Jyske Mobilbank med Swipp- send penge nemt og hurtigt

_______________________________________________
egit-dev mailing list
egit-dev@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe
from this list, visit
https://dev.eclipse.org/mailman/listinfo/egit-dev

_______________________________________________
egit-dev mailing list
egit-dev@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe
from this list, visit
https://dev.eclipse.org/mailman/listinfo/egit-dev
 _______________________________________________
egit-dev mailing list
egit-dev@xxxxxxxxxxx
To change your delivery options, retrieve your password, or unsubscribe
from this list, visit
https://dev.eclipse.org/mailman/listinfo/egit-dev