On 02/17/2014 10:14 PM, Christian Göbeler wrote:
> Am 17.02.2014 18:52, schrieb Gilles Chanteperdrix:
>> On 02/17/2014 06:47 PM, Christian Göbeler wrote:
>>> also disabled SMI by using the workaround described in the wiki
>>> (xeno_hal.smi=1)
>>
>> Most importantly, after you have booted doing that run
>>
>> dmesg | grep -i smi
>>
>> to See if the SMI workaround actually worked.
>>
>>
>
> dmesg shows the following smi messages:
>
> [ 0.000000] Command line:
> BOOT_IMAGE=/boot/vmlinuz-3.8.13-xenomai-2.6.3
> root=UUID=c01a5565-8f04-4959-a6a0-1bc4e920a017 ro text xeno_hal.smi=1
> pci=nomsi nomodeset
> [ 0.000000] Kernel command line:
> BOOT_IMAGE=/boot/vmlinuz-3.8.13-xenomai-2.6.3
> root=UUID=c01a5565-8f04-4959-a6a0-1bc4e920a017 ro text xeno_hal.smi=1
> pci=nomsi nomodeset
> [ 0.000908] CPU0: Thermal monitoring handled by SMI
> [ 0.149371] CPU1: Thermal monitoring handled by SMI
> [ 0.170683] CPU2: Thermal monitoring handled by SMI
> [ 0.191977] CPU3: Thermal monitoring handled by SMI
> [ 0.213274] CPU4: Thermal monitoring handled by SMI
> [ 0.234576] CPU5: Thermal monitoring handled by SMI
> [ 0.255876] CPU6: Thermal monitoring handled by SMI
> [ 0.277184] CPU7: Thermal monitoring handled by SMI
> [ 0.814047] Xenomai: SMI-enabled chipset found
> [ 0.814093] Xenomai: SMI workaround enabled
>
> I'm not sure how to read that. The workaround is enabled but not working?
>
> Unfortunatly I couldn't resist and changed more of the kernel config
> than probably necessary, now things are getting really slow.
>
> None of my latencies are below 4000 and some are even beyond 170000.
> Additionally the posix mutex torture script crashes every once in a
> while with varying messages (i.e. device or resource busy, lock_stealing
> not supported, access violations, and so on)
You could be overheating, that could be the effect of disabling SMI
globally, if thermal monitoring relies on SMI. So, you should not try to
run with the smi workaround enabled.
I am afraid if there is no option in BIOS to let the OS do the thermal
management instead of the SMI, and if the thermal monitoring is what is
causing the high latencies, you are out of luck.
--
Gilles.
_______________________________________________
Xenomai mailing list
[email protected]
http://www.xenomai.org/mailman/listinfo/xenomai
