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gc overhead
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Date: 2010-03-01 (08:54)
From: Richard Jones <rich@a...>
Subject: Re: [Caml-list] gc overhead
On Sun, Feb 28, 2010 at 04:16:03PM -0800, 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.

I would have to say what's wrong with using gprof?

On a related topic: Has anyone tried using SystemTap with userspace
DTrace-compatible probes to measure anything about total kernel +
userspace usage of OCaml programs?  ie, this sort of thing:

but with OCaml programs.


Richard Jones
Red Hat