Date: Wed, 9 Sep 2009 10:18:03 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Alexander Motin <mav@freebsd.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: Detecting CPU throttling on over temperature Message-ID: <200909091018.10509.doconnor@gsoft.com.au> In-Reply-To: <4AA6860F.1020203@FreeBSD.org> References: <1252426982.00160755.1252414203@10.7.7.3> <4AA6860F.1020203@FreeBSD.org>
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[-- Attachment #1 --] On Wed, 9 Sep 2009, Alexander Motin wrote: > Daniel O'Connor wrote: > > I recently discovered a system where the floppy drive cable was > > intermittently fouling the CPU fan - I believe this caused the CPU > > to overheat and then get throttled by the BIOS. > > > > Does anyone know if it is possible to determine if this is the > > case? ie is there a way to be informed if throttling has occurred? > > Theoretically it is possible. I know off-topic tool reporting this. > Also you can just monitor CPU temperature, depending on CPU type. Monitoring CPU temperature is a bit difficult, there are a lack of tools (although I have some code it's not complete). The problem is that the CPU temperature is only a proxy measurement, I would much prefer to be told directly the BIOS is throttling rather than guess :) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iD8DBQBKpvtK5ZPcIHs/zowRArRGAJ43KPHEEicOPVx7i/L7sAF51x5N3gCcCM8F OID4CKFBz4YZYvent3BPn6g= =sI8V -----END PGP SIGNATURE-----help
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