Re: [LAU] How to turn off hyperthreading?

Thanks. Unfortunately, the Verix 530 I'm looking at doesn't offer an
option to disable HT in BIOS.

On 03/25/2013 10:23 AM, Louis Gorenfeld wrote:
> Hi David,
> I have seen hyperthreading cause issues with audio applications (CPU
> usage spikes). My understanding is that this is because the CPU tells
> the operating system that it has twice the number of cores that it
> actually has. A hyperthreading CPU can do a limited amount of work in
> parallel, but for audio where you're doing the same thing over and
> over on multiple threads it can cause issues when you need to turn
> around a result in a reliable and short number of milliseconds.
> However, I am not a hardware engineer so it's possible that my
> explanation isn't as accurate as it could be, so take it with some
> grain of salt :).
>
> It can typically be disabled as an option in the BIOS.
>
> -Louis
>
> On Mon, Mar 25, 2013 at 12:26 PM, Julien Claassen <julien@email-addr-hidden> wrote:
>> Hi David!
>> Not, that I'm an expert, but I can't see, why HyperThreading should cause
>> with RT.
>> Still, if there is a possibility to deo this from inside Linux, you'll
>> have to look into the sys filessystem.
>> /sys/devices/system/cpu/
>> is a likely point to start looking.
>> Asfar as I am aware, hyperthreading has been used for years and is quite
>> an essential part of cpu design, I shouldn't even say "modern" in this
>> context, for I heard this mentioned in one of my computer science lectures
>> back in the early 2000s and that was one of the profs actually involved with
>> the practical side.
>> Take this with a pinch of salt.
>> Warm regards
>> Julien
>>
>> ----------------------------------------
>> http://juliencoder.de/nama/music.html

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