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emf.ecore.resource.ResourceSet.getResource takes more time in VIRGO [message #1209197]

Mon, 25 November 2013 11:37

Chandre Gowda

Messages: 56
Registered: April 2013

Member

Hi,

The following code takes around 1 second for every call in VIRGO server. But takes few milliseconds during eclipse run. Also I found that if I add the resource loading logic in my Activator, which is triggered during virgo server startup, the time taken is very less (~0.4 sec).

Resource resource = org.eclipse.emf.ecore.resource.ResourceSet.getResource(uri, true);

Please see the below link for more details.
http://www.eclipse.org/forums/index.php/t/593004/

Any suggestions on how to debug this or performance optimization is highly appreciated.

Thanks
Chandru

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Re: emf.ecore.resource.ResourceSet.getResource takes more time in VIRGO [message #1209369 is a reply to message #1209197]

Mon, 25 November 2013 13:25

Ed Merks

Messages: 31770
Registered: July 2009

Senior Member

Chandre,

What URI are you using? I.e., where is the resource you're loading located?

On 25/11/2013 12:37 PM, Chandre Gowda wrote:
> Hi,
>
> The following code takes around 1 second for every call in VIRGO
> server. But takes few milliseconds during eclipse run. Also I found
> that if I add the resource loading logic in my Activator, which is
> triggered during virgo server startup, the time taken is very less
> (~0.4 sec).
> Resource resource =
> org.eclipse.emf.ecore.resource.ResourceSet.getResource(uri, true);
>
> Please see the below link for more details.
> http://www.eclipse.org/forums/index.php/t/593004/
>
> Any suggestions on how to debug this or performance optimization is
> highly appreciated.
>
> Thanks
> Chandru

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: emf.ecore.resource.ResourceSet.getResource takes more time in VIRGO [message #1210682 is a reply to message #1209369]

Tue, 26 November 2013 04:18

Chandre Gowda

Messages: 56
Registered: April 2013

Member

URI is a path to simple xml file which is available in the same system, so I think we can avoid looking at networking latency as a factor.
Following line gives the URI.
URI uri = URI.createFileURI(file.getAbsolutePath());

Thanks
Chandru

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Re: emf.ecore.resource.ResourceSet.getResource takes more time in VIRGO [message #1211132 is a reply to message #1210682]

Tue, 26 November 2013 09:22

Ed Merks

Messages: 31770
Registered: July 2009

Senior Member

Chandru,

Perhaps Virgo involves more security manager overhead to access the file
system. You can see that
org.eclipse.emf.ecore.resource.impl.FileURIHandlerImpl.createInputStream(URI,
Map<?, ?>) basically just uses a FileInputStream so why that would be
slower isn't clear.

On 26/11/2013 5:18 AM, Chandre Gowda wrote:
> URI is a path to simple xml file which is available in the same
> system, so I think we can avoid looking at networking latency as a
> factor.
> Following line gives the URI.
> URI uri = URI.createFileURI(file.getAbsolutePath());
>
> Thanks
> Chandru

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: emf.ecore.resource.ResourceSet.getResource takes more time in VIRGO [message #1213370 is a reply to message #1211132]

Wed, 27 November 2013 07:56

Florian Waibel

Messages: 164
Registered: June 2010

Senior Member

Please let's join our efforts to not waste unnecessary time on this.

[Updated on: Wed, 27 November 2013 07:57]

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