Re: [LAU] How to turn off hyperthreading?

On 03/25/2013 10:39 AM, Jostein Chr. Andersen wrote:
> On 03/25/2013 08:06 PM, david wrote:
>> The laptop I'm considering (Zareason Verix 530) as replacement for my
>> current one has a dual-core Intel i3 processor with hyperthreading.
>> Zareason says there's no way to turn off HT in BIOS.
>>
>> I think folk on the list have said that HT causes problems with RT. So
>> how can I disable hyperthreading?
>
> I can do like this in my Kubuntu system which have 8 kernels:
>
> sudo echo 0 > /sys/devices/system/node/node0/cpu0/online
> sudo echo 0 > /sys/devices/system/node/node0/cpu2/online
> .
> .
> sudo echo 0 > /sys/devices/system/node/node0/cpu7/online
>
>
> To my surprise, they are enabled (value 1) in my system, I thought that
> hyperthreading was disabled in my BIOS. That might explain why I have
> xruns earlier than expected on my system. I'm glad you asked about this
> in the forum. :-)

You're welcome. I'm glad I found an answer! I'll have to check by
desktop machine (AMD Phenom IIx4) now, might explain things there, too.

-- 
David
gnome@email-addr-hidden
authenticity, honesty, community
http://clanjones.org/david/
http://dancing-treefrog.deviantart.com/
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