Temperature monitoring on old desktop - Dell OptiPlex SX270?
torfinn.ingolfsen at broadpark.no
Sun Aug 3 11:52:54 UTC 2008
On Sat, 02 Aug 2008 20:19:12 -0700
Jeremy Chadwick <koitsu at FreeBSD.org> wrote:
> On Sun, Aug 03, 2008 at 01:50:53AM +0200, Torfinn Ingolfsen wrote:
> The first questions to ask are: 1) does this machine even have a H/W
> monitoring IC on it, and 2) is it enabled/wired to thermistors and
Yes, but so far I haven't found out anything by searching.
> What processor is in it? Not a Core2Duo. I'm guessing since it's
> circa 2004, probably a Pentium 3 or 4, or possibly an older AMD.
Pentium 4. From dmesg:
CPU: Intel(R) Pentium(R) 4 CPU 2.60GHz (2593.51-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf29 Stepping = 9
Logical CPUs per core: 2
> None of those, to my knowledge, have on-die temperatures -- they all
> rely on external H/W monitoring.
Ok, so what is the 'TM' feature of this cpu then?
cpuid thinks it is a thermal monitor:
Type 0 - Original OEM
Family 15 - Pentium 4
Extended family 0
Model 2 - Intel Pentium 4 processor (generic) or newer
Brand index: 9 [Intel Pentium 4 processor]
Extended brand string: " Intel(R) Pentium(R) 4 CPU 2.60GHz"
CLFLUSH instruction cache line size: 8
Hyper threading siblings: 2
Feature flags: bfebfbff:
FPU Floating Point Unit
VME Virtual 8086 Mode Enhancements
DE Debugging Extensions
PSE Page Size Extensions
TSC Time Stamp Counter
MSR Model Specific Registers
PAE Physical Address Extension
MCE Machine Check Exception
CX8 COMPXCHG8B Instruction
APIC On-chip Advanced Programmable Interrupt Controller present and enabled
SEP Fast System Call
MTRR Memory Type Range Registers
PGE PTE Global Flag
MCA Machine Check Architecture
CMOV Conditional Move and Compare Instructions
FGPAT Page Attribute Table
PSE-36 36-bit Page Size Extension
CLFSH CFLUSH instruction
DS Debug store
ACPI Thermal Monitor and Clock Ctrl
MMX MMX instruction set
FXSR Fast FP/MMX Streaming SIMD Extensions save/restore
SSE Streaming SIMD Extensions instruction set
SSE2 SSE2 extensions
SS Self Snoop
HT Hyper Threading
TM Thermal monitor
Feature flags set 2: 00004400:
CID Context ID
xTPR Send Task Priority messages
TLB and cache info:
50: Instruction TLB: 4KB and 2MB or 4MB pages, 64 entries
5b: Data TLB: 4KB and 4MB pages, fully assoc., 64 entries
66: 1st-level data cache: 8KB, 4-way set assoc, 64 byte line size
40: No 2nd-level cache, or if 2nd-level cache exists, no 3rd-level cache
70: Trace cache: 12K-micro-op, 4-way set assoc
7b: 2nd-level cache: 512KB, 8-way set assoc, sectored, 64 byte line size
> I just checked http://tingox.googlepages.com/sx270 and sure enough, an
> older P4. coretemp(4) won't work with this.
I know, I just thought that ther might be something similar for the TM feature of Pentium 4's.
> I would start by booting the machine into Windows and install
> SpeedFan. If that thing is able to detect and provide thermal data,
Ouch. I was hoping that I wouldn't have to do that. The machine have no internal CD-drive,
and for some reason doesn't want to boot from a (usb) external cd-drive either (kind of funny - it boots from flash drives and external hard drives. But cd-rom -no).
I was hoping to solve this without windows in the picture.
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