Re: Native compilation on Windows, was Re: Bootstrap Compilation Speed

[H. Dieter Wilhelm]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: "H. Dieter Wilhelm" <dieter@duenenhof-wilhelm.de>
>> Cc: emacs-devel@gnu.org
>> Date: Sun, 30 Jan 2022 12:57:04 +0100
>> 
>>   $ rm -r eln-cache/
>>   $ date && emacs
>>   $ date -r latest/eln-cache/file
>> 
>> That worked for me doing a quick check:
>> 
>> I'm curious about the hyperthreading potential on my 4 core Intel laptop
>> for doing compilations. And checked Emacs-28.0.91 from Corwin with (setq
>> native-comp-async-jobs-number 8) vs 4 jobs.  My init.el forces Emacs to
>> compile over 200 .eln files and it took about 5'40" with 8 logical
>> processors and 7'7" with 4 logical processors.
>
> How many execution units you actually have there?

I think you mean with "execution units" what the task manager calls
"cores".  This computer has 4 cores and 8 logical processors as you can
see in the attached image from it's task manager.

task_manager_cores_2022-01-30.png
Description: PNG image

--
        Dieter