Random performance lags

From time to time I m experiencing performance issues - random page just takes too long to load. It happens from time to time and server doesnt seems to experience any spikes at CPU or memory at that time.

I manager to debug the request and most time is spent on rendering template. Do you have any clues what might be the reason?

It’s hard to get an opinion of what the problem is with just this report.

What some are doing to analyze these types of problems is to install GlowRoot, see https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Monitoring

Glowroot is quite nice and provides a nice global analysis for slow requests.

Maybe you could try it?

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