Re: [Xenomai-help] Very high latencies under stress testing

[edward.robbins@domain.hid]

Forgot to copy the list:


Okay, so smi.c does not appear to contain my the PCI ID of my LPC chip. Motherboard has intel GS45 chipset, and "lspci -nn" says:

00:1f.0 ISA bridge [0601]: Intel Corporation ICH9M-E LPC Interface Controller [8086:2917] (rev 03)

Is this what I'm looking for? (What has ISA got to do with this?)

This PCI ID is not defined in either include/linux/pci_ids.h or include/asm-generic/xenomai/pci_ids.h, although there are these entries:

PCI_DEVICE_ID_INTEL_ICH9_7        0x2916
PCI_DEVICE_ID_INTEL_ICH9_8        0x2918

So I guess I should add 

#define PCI_DEVICE_ID_INTEL_ICH9_9        0x2917 

to xenomai/pci_ids.h, then add this define to smi.c, and see if magic happens?

Thanks for walking me through this!

Edward

On Saturday, 23 October, 2010 3:10pm, "Gilles Chanteperdrix" <gilles.chanteperdrix@xenomai.org> said:

> edward.robbins@domain.hid wrote:
>> Oh no...
>>
>> dmesg | grep SMI
>>
>> CPU0: Thermal monitoring handled by SMI CPU1: Thermal monitoring
>> handled by SMI
>>
>> So I guess that didn't work? I have used the 'Globally disable SMIs
>> option' at kernel config time.... there is an option in  the BIOS to
>> disable SMI but I was having problems with it... will investigate.
>> Any other options?
> 
> See:
> http://www.xenomai.org/index.php/Configuring_x86_kernels#In_case_of_high_latencies
> 
> Note that if SMIs are involved in regulating temperature on your system,
> disabling them may cause your CPU to overheat. So, when running dohell,
> you should check the CPU temperature.
> 
> --
>                                                                 Gilles.
>