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Re: Elisp native profiler

From: Stefan Monnier
Subject: Re: Elisp native profiler
Date: Fri, 28 Sep 2012 08:37:22 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2.50 (gnu/linux)

> The default value of profiler-sample-interval is now 1, but
> I think it is too high frequent.  I've profiled the following
> code, and found there is a huge mismatch between 1 and 10 of 
> profiler-sample-interval value (1000ms vs 4000ms).

I'm not sure what you mean by mismatch.  You mean that the profiler
with the current default slows down execution by a factor of 4?

In my tests, the slowdown was of the order of 1%.

> How about setting the value to 9, for example?

I'm willing to change the default, but I'd first like to understand
what's the root cause.


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