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X-HELO: calimero.vinschen.de
Date: Mon, 3 Aug 2015 15:33:43 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: cpuinfo cache size
Message-ID: <20150803133343.GA18434@calimero.vinschen.de>
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References: <55896193.2080307@gmail.com> <20150623141737.GS28301@calimero.vinschen.de> <loom.20150803T112514-524@post.gmane.org>
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On Aug  3 10:15, Achim Gratz wrote:
> Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:
> > Cygwin is lacking the code to fetch L3 caches and afaics, it's not
> > overly simple.  At least calling cpuid as for L1 and L2 caches is not
> > sufficient, apparently.
>=20
> If you can use the Windows API, then this
> https://msdn.microsoft.com/en-us/library/ms683194.aspx

Oh, that sounds good.  I wasn't aware of this function.  This and
GetLogicalProcessorInformationEx on newer systems seem to help here.

If nobody beats me to it I'll have a look into it at one point.

> I have no patches, but another difference to Linux is that the CPU freque=
ncy
> reported is the maximum (non-turbo) frequency instead of the actual one
> (which could be larger or lower depending on the frequency scaling in
> effect).  That seems to require more infrastructure, though.

Another Windows function? :)


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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