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Message-ID: <74dc7a46-d5ce-953d-add0-591164acf8bf@cs.umass.edu>
Date: Thu, 2 Jan 2025 10:42:18 -0500
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Subject: Re: Enumerate performance vs powersave cores with Cygwin?
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To: Marco Atzeri <marco.atzeri@gmail.com>,
        Cedric Blancher <cedric.blancher@gmail.com>, cygwin@cygwin.com
References: <CALXu0UcWYQats_FdTt-Pp1bZBPQ28e0SUn4NnRJHYsPVCtWdKg@mail.gmail.com>
 <7115c5ea-a85f-45f5-b12f-c81aee91ef6a@gmail.com>
In-Reply-To: <7115c5ea-a85f-45f5-b12f-c81aee91ef6a@gmail.com>
From: Eliot Moss via Cygwin <cygwin@cygwin.com>
Reply-To: Eliot Moss <moss@cs.umass.edu>
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On 1/2/2025 10:20 AM, Marco Atzeri via Cygwin wrote:
> On 02/01/2025 15:40, Cedric Blancher via Cygwin wrote:
>> Good afternoon!
>>
>> How can I use Cygwin to enumerate performance cores, and then the
>> powersave cores? I want the CPU core numbers for later use by
>> /usr/bin/taskset
>>
>> Ced
> 
> what about
> 
> cat /proc/cpuinfo
> 
> and filter the info you need

The only things that I see that differ between the cores on my system is the
apic id, core id, and initial core id (found by doing cat /proc/cpuinfo | sort
| uniq).  Maybe there is some property of the core numbering that will tell
you, but I did not see anything else.

You can, however, get this information from the cpuid program.  See, for
example, the (synth) entry.

Cheers - Eliot Moss

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