K8TEMP(8) System Manager's Manual K8TEMP(8) NAME k8temp -- display on-die temperature readings from AMD K8 and K10 proces- sors SYNOPSIS k8temp [-nd] [selector ...] | [-v | -h] DESCRIPTION The k8temp utility displays temperature readings from AMD K8 and K10 processors using their on-die thermal diode(s). k8temp requires read-write access to /dev/pci, and thus must be run as root. The following options are available: -v Display version and copyright information. -h Display help text. -n Show only temperature values. -d Display debug information, including raw register contents and in- terpreted subvalues, and an Advanced Power Management feature dump. Selectors specify which CPU, core and sensor to read, and are of the form cpu[:core[:sensor]]. Note, output order is fixed, and not (yet) defined by the order of selectors. EXAMPLES k8temp 1:0:0 Display reading for CPU1, core 0, sensor 0. k8temp 1:0 Display reading for CPU1, core 0, all available sensors. k8temp -d 0 2 Display reading for CPU 0 and CPU2, all available cores and sen- sors. Display debug output. BUGS k8temp may cause unsupported systems to reboot, crash or explode. Core numbers on single core systems may be incorrect (e.g. core 1 but no core 0). Running multiple copies of k8temp at once could result in readings being taken from incorrect cores. Readings from K10's are experimental. Limited testing suggests they're 10-20 degrees too low. HISTORY 0.1.0, 2007-10-21 First release. 0.1.1, 2007-10-22 Fixes a serious error resulting in writes to a bogus PCI register. 0.2.0, 2007-10-25 Add support for diode offset correction and debugging options. Add CPUID check. 0.3.0, 2007-12-04 Add tentative support for OpenBSD and NetBSD. Remove (meaningless) diode offset correction. Introduce value-only output mode and sen- sor selector arguments. 0.4.0, 2008-06-22 Add preliminary K10 (Barcelona/Phenom) support. SEE ALSO BIOS and Kernel Developer's Guide for AMD NPT Family 0fh Processors. Sec- tion 4.6.23, Thermtrip Status Register. AMD CPUID Specification, CPUID Fn8000_0007, Advanced Power Management In- formation. BIOS and Kernel Developer's Guide For AMD Family 10h Processors. Section 3.6.F3xA4, Reported Temperature Control Register. AUTHOR Thomas Hurst <tom@hur.st> FreeBSD ports 15.quarterly October 21, 2007 K8TEMP(8)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | BUGS | HISTORY | SEE ALSO | AUTHOR
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