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Guava's EventBus component performance in Android app

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http://stackoverflow.com – I am prototyping an application and I though I would try to use Guava's EventBus component to get rid of some code I was keeping writing again and again to propagate events from fragments to activities for instance. To my surprise, I got a really big performance hit when activities are starting. I only do a single EventBus.register call on the activity itself. Removing that call brings back the activity start time to usual. I also noticed quite a lot of garbage collection going on at that time. Would anyone have advice about Guava's EventBus and Android? Should I simply go back to the simp (HowTos)