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Re: Elisp native profiler

From: Paul Eggert
Subject: Re: Elisp native profiler
Date: Sun, 30 Sep 2012 13:43:14 -0700
User-agent: Mozilla/5.0 (X11; Linux i686; rv:15.0) Gecko/20120912 Thunderbird/15.0.1

On 09/30/2012 01:13 PM, Stefan Monnier wrote:
>> I also like increasing the default sample interval to 10 ms.
> Any particular reason?

Conservativism.  If the sample interval is too small,
bad things happen: Emacs goes catatonic or dumps
core or whatever.  (I found this out by using a
sample interval of 1 microsecond -- silly, I know,
but I wanted to see what would happen....)

Whether an interval is "too small" depends on the
platform.  The platforms most at risk are the older,
slower ones.

If 1 ms was ten times better than 10 ms, in terms of the profile
quality that it gave you, it'd be worth going with 1 ms
despite these potential (and maybe nonexistent) problems.
But it doesn't seem to be *that* much better.

All that being said, it's no big deal.
1 ms is fine too, I expect.

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