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The time now is Tue 26 Mar 2019, 06:17
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 Forum index » Off-Topic Area » Programming
Kernel hyperthreading is now forced on
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8Geee


Joined: 12 May 2008
Posts: 1839
Location: N.E. USA

PostPosted: Mon 07 Jan 2019, 12:33    Post subject:  

Frankly, the 32/64 bit Pup was/is not a real choice... the CPU manufacturers made that change for us. Puppy had no other choice but to make 64b OS's so that newer CPU/MPU could take advantage of a 1% speed increase. Naturally 64b OS's exclude 32 bit CPU/MPU... and that was the true aim of the other OS developers.

FWIW
8Geee

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Linux user #498913 Some people need to reimagine their thinking.
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ozsouth

Joined: 01 Jan 2010
Posts: 459
Location: S.E Australia

PostPosted: Tue 08 Jan 2019, 03:36    Post subject:  

This may explain some of the issues I've had on new laptops on which I can't disable hyperthreading.
I've made a 64bit kernel with CONFIG_SCHED_SMT=y. Will test over next week or so to see.
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peterw

Joined: 19 Jul 2006
Posts: 330
Location: UK

PostPosted: Tue 08 Jan 2019, 10:13    Post subject: Is hyperthreading activated in all Puppies  

Interesting discussion. Made me think, "How do you know that hyperthreading is in use or not?" You can easily find out if the CPU is capable of it but you are not certain if it is actually using it.
Anyhow after reading about various commands and Python scripts, I came across this http://www.murga-linux.com/puppy/viewtopic.php?t=59771 Puppy followers had the easiest answer which is to use htop. I wanted to see if it was in use on a Slacko that was on a single core Atom CPU Acer Aspire One and found out that it was.
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