[TriLUG] The Linux kernel has been accidentally hard-coded to a maximum of 8 cores for the past 15 years and nobody noticed

Peter Soper via TriLUG trilug at trilug.org
Tue Nov 14 07:05:52 EST 2023


I was going to write something similar: this would have been noticed! I suspect the blog will hit Hacker News before too long and the remarks should be interesting.
Pete

Nov 14, 2023 6:56:16 AM David Both via TriLUG <trilug at trilug.org>:

> I'm not sure how that conclusion can be reached in light of the fact
> that I have been using 6, 8, 12, 14, and 16 cores (X2 for CPUs with HT)
> for years. According to all the tools like top, htop, atop, glances, and
> more, all of those cores and CPUs are in full use. Also the results my
> systems show on the stats page of World Community Grid shows that all my
> computers are performing calculations for the full number of cores and
> CPUs present. So my 16-core, 32-CPU i9 host generates 32 days of
> processing for each 24-hour day it runs.
> 
> However it was an interesting read. ;-)
> 
> -- 
> 
> 
> *********************************************************
> David P. Both, RHCE
> He/Him/His
> *********************************************************
> www.both.org - My personal web site
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> DataBook is a Registered Trademark of David Both
> *********************************************************
> The value of any software lies in its usefulness
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> 
> — Linus Torvalds
> *********************************************************
> 
> On Tue, 14 Nov 2023, brian mullan via TriLUG wrote:
> 
>> Date: Tue, 14 Nov 2023 06:29:46
>> From: brian mullan via TriLUG <trilug at trilug.org>
>> Reply-To: brian mullan <bmullan.mail at gmail.com>,
>>     Triangle Linux Users Group General Discussion <trilug at trilug.org>
>> To: Triangle Linux Users Group General Discussion <trilug at trilug.org>
>> Subject: [TriLUG] The Linux kernel has been accidentally hard-coded to a
>>     maximum of 8 cores for the past 15 years and nobody noticed
>> Well this was an interesting article to read at 6am
>> 
>> *The Linux kernel has been accidentally hardcoded to a maximum of 8 cores
>> for the past 15 years and nobody noticed*
>> <https://thehftguy.com/2023/11/14/the-linux-kernel-has-been-accidentally-hardcoded-to-a-maximum-of-8-cores-for-nearly-20-years/>
>> 
> -- 
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