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gc overhead
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Date: 2010-03-02 (22:03)
From: Sylvain Le Gall <sylvain@l...>
Subject: Re: gc overhead
On 01-03-2010, Warren Harris <> wrote:
> I would like to determine what percentage of my application's cpu time  
> is spent in the garbage collector (for tuning purposes, but also just  
> to monitor the overhead). Is there any way to obtain this information  
> short of using gprof? Additional information provided by Gc.stat would  
> be ideal, or perhaps a Gc.alarm that was called at the beginning of  
> the gc cycle, but neither of these seem to exist.

You can have a look at:

This allow to instrument your code and watch GC activity. I think that
with a little a little help on program side, you can be quite precise
about GC without using gprof at all. This should also be more
lightweight than gprof.

Sylvain Le Gall