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Re: Linux 2.6.25 (coretemp reads high temperatures)
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From: Pavel Machek
Subject:
Re: Linux 2.6.25 (coretemp reads high temperatures)
Date: Friday, May 2, 2008 - 1:36 pm
Hi!
quoted text
> > > So, im confused.. The reason for this is that the internal sensor is > > > operating on some sort of weird scale, and thus when you interpolate it > > > into "your" scale, it doesent quite come out in the actual degrees > > > celcius the cpu temperature really is? > > > > It's really only an offset, rather than scaling. The temperature > > reported by the Core and Core2 CPUs is a relative temperature. It tells > > how far you are from the maximum temperature the CPU can survive. The > > value is expressed in (relative) degrees C. > > Ah, please ignore my email about ITUs (Intel thermal units), then. The > above means 1ITU=1°C, but their zeros are at different places. > > > Rudolf did his best to find out the (absolute) temperature each CPU > > model can survive (known as TJmax) so that the coretemp driver can > > provide an absolute temperature to user-space, as all other hardware > > monitoring drivers do. Our hope was to limit the confusion, but it > > seems we failed ;) Maybe it would be better if the driver was reporting > > the relative temperature value directly when we don't know the TJmax > > value for sure - but then all user-space tools would need to learn how > > to deal with this. > > Actually, just libsensors would, and the local admin can adjust it at > will using the config file. > > Nobody in userspace should be reading hwmon sysfs directly without the > use of libsensors. If they are, it is their bug, and it is unsupported > AFAIK.
Hmm, that's an interesting ABI design. No, I do not think that's a good idea. -- (english)
http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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Messages in current thread:
Linux 2.6.25
, Matthew
, (Fri Apr 18, 8:37 am)
Re: Linux 2.6.25
, Linus Torvalds
, (Fri Apr 18, 8:43 am)
Re: Linux 2.6.25
, Matthew
, (Fri Apr 18, 9:02 am)
Re: Linux 2.6.25
, Gene Heskett
, (Fri Apr 18, 9:24 am)
Re: Linux 2.6.25
, Gene Heskett
, (Fri Apr 18, 9:27 am)
Re: Linux 2.6.25
, Bart Van Assche
, (Fri Apr 18, 12:18 pm)
Re: Linux 2.6.25
, Cyrill Gorcunov
, (Fri Apr 18, 12:38 pm)
Re: Linux 2.6.25
, Cyrill Gorcunov
, (Fri Apr 18, 1:03 pm)
Re: Linux 2.6.25
, Jiri Slaby
, (Fri Apr 18, 1:24 pm)
Re: Linux 2.6.25
, Rudolf Marek
, (Fri Apr 18, 1:50 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Len Brown
, (Fri Apr 18, 6:51 pm)
Re: Linux 2.6.25
, Rene Herman
, (Fri Apr 18, 8:05 pm)
Re: Linux 2.6.25
, Rene Herman
, (Fri Apr 18, 8:20 pm)
Re: Linux 2.6.25
, Cyrill Gorcunov
, (Fri Apr 18, 11:17 pm)
Re: Linux 2.6.25
, Matthew
, (Sat Apr 19, 3:18 am)
Re: Linux 2.6.25
, Matthew
, (Sat Apr 19, 3:22 am)
Re: Linux 2.6.25
, Matthew
, (Sun Apr 20, 5:02 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Thomas Bächler
, (Mon Apr 21, 9:10 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Matthew
, (Mon Apr 21, 9:28 am)
Fwd: Linux 2.6.25 (coretemp reads high temperatures)
, Matthew
, (Mon Apr 21, 10:07 am)
Fwd: Linux 2.6.25 (coretemp reads high temperatures)
, Matthew
, (Tue Apr 22, 2:26 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Maxim Levitsky
, (Wed Apr 23, 1:43 am)
Re: Linux 2.6.25
, Len Brown
, (Wed Apr 23, 8:36 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Kasper Sandberg
, (Mon Apr 28, 11:19 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Thomas Renninger
, (Tue Apr 29, 6:07 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Jean Delvare
, (Tue Apr 29, 8:08 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Rudolf Marek
, (Tue Apr 29, 3:14 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Matthew
, (Tue Apr 29, 3:58 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Kasper Sandberg
, (Tue Apr 29, 5:11 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Jean Delvare
, (Tue Apr 29, 11:10 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Jean Delvare
, (Tue Apr 29, 11:20 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Henrique de Moraes H ...
, (Wed Apr 30, 7:46 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Rudolf Marek
, (Wed Apr 30, 7:50 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Henrique de Moraes H ...
, (Wed Apr 30, 7:51 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Jean Delvare
, (Wed Apr 30, 8:18 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Jean Delvare
, (Wed Apr 30, 8:28 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Pavel Machek
, (Fri May 2, 1:35 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Pavel Machek
, (Fri May 2, 1:35 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Pavel Machek
, (Fri May 2, 1:36 pm)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Henrique de Moraes H ...
, (Sun May 4, 10:42 am)
Re: Linux 2.6.25 (coretemp reads high temperatures)
, Pavel Machek
, (Mon May 5, 6:45 am)
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