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EMF Compare EGIT Performance [message #1770222]

Wed, 09 August 2017 03:54

Eclipse User

I trying to use EMF Compare with an Git Based Repository (EGit Plugin). Everytime when im compare my model with the Remote Repository Eclipse freezes. My model ist about 4 MB

I analyze the Problem and i find out that the intrinsicIDMap ist always emty.
(Iam using a custom ResourceImpl)

So the whole model File is iterated for each Object id, maybe the source of the Problem is based on the class SynchronizedResourceSet, where is mentioned that you dont use the feature

XMLResource.OPTION_USE_XML_NAME_TO_FEATURE_MAP

https://bugs.eclipse.org/bugs/show_bug.cgi?id=403425
https://www.eclipse.org/forums/index.php/t/929918

Could you give me a hint for solving the problem

Re: EMF Compare EGIT Performance [message #1770426 is a reply to message #1770222]

Fri, 11 August 2017 04:43

Eclipse User

Hi Markus,

Are you using the latest EMF Compare build (3.3.1, can be installed from http://download.eclipse.org/modeling/emf/compare/updates/releases/3.3/R201706130827)? Which version of EGit are you using?

Other than that... EMF Compare never explicitely sets the intrinsicIDToObjectMap. Why do you expect it to be set in your case? It sounds like it could be a very nice performance improvement for EMF Compare to set that map when it starts to resolve the logical model (and unset it once loading is done). Would you have any means to share a sample model that presents this particularity so that we can get a feel of the numbers?

Laurent Goubet
Obeo

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