GNU bug report logs - #41242
Port feature/native-comp to Windows

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Message #29 received at 41242 <at> debbugs.gnu.org (full text, mbox):

From: Andrea Corallo <akrl <at> sdf.org>
To: Nicolas Bértolo <nicolasbertolo <at> gmail.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 41242 <at> debbugs.gnu.org
Subject: Re: bug#41242: Port feature/native-comp to Windows
Date: Wed, 13 May 2020 22:25:27 +0000

Nicolas Bértolo <nicolasbertolo <at> gmail.com> writes:

>> Did you manage to understand why?  How many bytes of *.eln files does
>> Emacs load while autoloading Helm, for example?
>
> I don't know how to measure that, sorry. AFAIK Emacs just maps many subr to the
> correct function pointers and the OS takes care of loading the appropriate code
> on page faults.

Loading elns quite stress also the reader that is still used to
deserialize all objects except functions.

The fact that the load is that slower on Windows seems to indicate that
the equivalent dlopen dlsym are less performant than the other systems
we have tried (the reader should be quite the same).

That said there must be a way to profile on Windows so we get a picture
of what is going on.

-- 
akrl <at> sdf.org

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