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First page load takes a long time [message #758204]

Tue, 22 November 2011 05:32

Eclipse User

Hi,

I have a standard war deployed on virgo. It doesn't have dependencies on any other bundles. The first time a page loads it takes about 20 to 30 secs while subsequent requests are very responsive. Profiling using Yourkit gave us the following hotspots:

org.eclipse.virgo.osgi.extensions.equinox.hooks.ExtendedBundleFileWrapperFactoryHook$FileResourceEnforcingBundleFile.getEntry(String)
org.eclipse.osgi.baseadaptor.bundlefile.ZipBundleFile.getEntry(String)
java.util.zip.ZipFile.<init>(File)
org.eclipse.osgi.framework.internal.core.BundleHost.getResource(String)
org.springframework.osgi.util.BundleDelegatingClassLoader.findResource(String)

On probing file io, we see that the actual file read for each class/jsp takes about 1 or 2 milliseconds.

Any ideas on why the page takes a long time to load the first time it is requested?

Thanks,
Preethi

Re: First page load takes a long time [message #758205 is a reply to message #758204]

Tue, 22 November 2011 05:38

Eclipse User

Which version of Virgo are you running? (I would like to determine whether you are running with the fix for slow JSP compilation, which was shipped in 3.0)

Re: First page load takes a long time [message #758227 is a reply to message #758205]

Tue, 22 November 2011 06:45

Eclipse User

We are using 3.0.1

Re: First page load takes a long time [message #758245 is a reply to message #758227]

Tue, 22 November 2011 07:32

Eclipse User

Here is the link to the Yourkit CPU telemetry snapshot: mediafire.com/?m48qqaat9rh8wea

Re: First page load takes a long time [message #758583 is a reply to message #758245]

Wed, 23 November 2011 13:31

Eclipse User

Could you please create a bug (https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Virgo) and we can continue the investigation there?

Thanks
Violeta

Re: First page load takes a long time [message #759017 is a reply to message #758583]

Fri, 25 November 2011 10:26

Eclipse User

I have reported it here: bugs.eclipse.org/bugs/show_bug.cgi?id=364847

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