Highlighted
Community Manager kgroneman Community Manager
Community Manager
8711 views

Are you ready to have your computer slowed by 5 to 30%?

Malcolm Lewis (Knowledge Partner) brought this to my attention today. Well happy new year. 😞 A design flaw in Intel processors that has to be addressed by the OS causing a slow down of from 5 to 30% on Intel machines. I just got rid of my last AMD machine.

http://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/

Have you seen any other take on this?
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
Labels (1)
0 Likes
42 Replies
Knowledge Partner
Knowledge Partner

Re: Are you ready to have your computer slowed by 5 to 30%?


On Wed 03 Jan 2018 04:44:02 PM CST, kgroneman wrote:

Malcolm Lewis (Knowledge Partner) brought this to my attention today.
Well happy new year. 😞 A design flaw in Intel processors that has
to be addressed by the OS causing a slow down of from 5 to 30% on Intel
machines. I just got rid of my last AMD machine.

http://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/

Have you seen any other take on this?




Hi
Your Welcome 🙂

I see AMD are excluded (for the moment)...
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=00a5ae218d57741088068799b810416ac249a9ce

My main systems are all AMD.... 😉

Other reports;
https://www.pcworld.com/article/3245508/components-processors/intel-responds-to-the-cpu-kernel-bug.html

--
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE Leap 42.3|GNOME 3.20.2|4.4.103-36-default
If you find this post helpful and are logged into the web interface,
please show your appreciation and click on the star below... Thanks!

--
Cheers Malcolm °¿° SUSE Knowledge Partner
SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
If you appreciate what I've posted, click the LIKE button below. If this
solves your problem, please click the ACCEPT AS SOLUTION button.
0 Likes
Community Manager kgroneman Community Manager
Community Manager

Re: Are you ready to have your computer slowed by 5 to 30%?

Hey malcolmlewis:

>I see AMD are excluded (for the moment)...


Not any more: http://fortune.com/2018/01/03/intel-kernel-security-flaw-amd/

--
Kim - 1/4/2018 7:53:18 AM
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
0 Likes
Knowledge Partner
Knowledge Partner

Re: Are you ready to have your computer slowed by 5 to 30%?


On Thu 04 Jan 2018 02:53:29 PM CST, kgroneman wrote:

Hey malcolmlewis:

>I see AMD are excluded (for the moment)...


Not any more:
http://fortune.com/2018/01/03/intel-kernel-security-flaw-amd/



Hi
At least on SLE (openSUSE?) you can opt out of the 'Feature' with
nobp and nopti boot options....

--
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE Leap 42.3|GNOME 3.20.2|4.4.103-36-default
If you find this post helpful and are logged into the web interface,
please show your appreciation and click on the star below... Thanks!

--
Cheers Malcolm °¿° SUSE Knowledge Partner
SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
If you appreciate what I've posted, click the LIKE button below. If this
solves your problem, please click the ACCEPT AS SOLUTION button.
0 Likes
Knowledge Partner
Knowledge Partner

Re: Are you ready to have your computer slowed by 5 to 30%?


On Thu 04 Jan 2018 03:17:38 PM CST, malcolmlewis wrote:


On Thu 04 Jan 2018 02:53:29 PM CST, kgroneman wrote:

Hey malcolmlewis:

>I see AMD are excluded (for the moment)...


Not any more:
http://fortune.com/2018/01/03/intel-kernel-security-flaw-amd/



Hi
At least on SLE (openSUSE?) you can opt out of the 'Feature' with
nobp and nopti boot options....



Hi
Slight correction: nospec on x86_64.... nobp is zSeries...

--
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE Leap 42.3|GNOME 3.20.2|4.4.103-36-default
If you find this post helpful and are logged into the web interface,
please show your appreciation and click on the star below... Thanks!

--
Cheers Malcolm °¿° SUSE Knowledge Partner
SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
If you appreciate what I've posted, click the LIKE button below. If this
solves your problem, please click the ACCEPT AS SOLUTION button.
0 Likes
Knowledge Partner
Knowledge Partner

Re: Are you ready to have your computer slowed by 5 to 30%?

In article <kgroneman.8aj67b@no-mx.forums.microfocus.com>, Kgroneman
wrote:
> http://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/
>
> Have you seen any other take on this?


Never mind the possible perception of slower speed, but a whole new
avenue for unauthorized data extraction (leak/exfiltration)

for info about this flaw and how wide spread it is (i.e. Just about
everything computing)
https://meltdownattack.com/

SANS has a quick write up as well links to many vendors advisories on
the topic
https://isc.sans.edu/diary/rss/23193


Andy of
http://KonecnyConsulting.ca in Toronto
Knowledge Partner
http://forums.novell.com/member.php/75037-konecnya
If you find a post helpful and are logged in the Web interface, please
show your appreciation by clicking on the star below. Thanks!

___
Andy of Konecny Consulting in Toronto
Knowledge Partner Profile
If you find a post helpful, click the Like button below. Thanks!
0 Likes
Community Manager kgroneman Community Manager
Community Manager

Re: Are you ready to have your computer slowed by 5 to 30%?

Hey Andy Konecny:

>Never mind the possible perception of slower speed, but a whole new
>avenue for unauthorized data extraction (leak/exfiltration)


Isn't that what the OS modifications that will make it slower is supposed to
address?

--
Kim - 1/4/2018 11:02:24 AM
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
0 Likes
Knowledge Partner Knowledge Partner
Knowledge Partner

Re: Are you ready to have your computer slowed by 5 to 30%?

Yes, the OS modifications are supposed to mitigate, as much as possible,
the problems, and cause a big performance penalty (potentially) in the
process.

I have not seen anybody comment on what happens if/when Intel fixes the
bug. Will the kernel changes come back out, giving back more performance,
or can that all be detected on the fly (the changes can probably be
disabled at boot time, so maybe detected and implemented as needed too)?

--
Good luck.

If you find this post helpful and are logged into the web interface,
show your appreciation and click on the star below.

If you want to send me a private message, please let me know in the
forum as I do not use the web interface often.
0 Likes
Community Manager kgroneman Community Manager
Community Manager

Re: Are you ready to have your computer slowed by 5 to 30%?

Hey ab:

>if/when Intel fixes the bug.


And AMD and anyone that makes ARM processors.

I assume you're talking about when they redesign future processors. I really
doubt they'll be fixing/replacing existing chips, but I could be wrong.



--
Kim - 1/4/2018 12:47:03 PM
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
0 Likes
Knowledge Partner
Knowledge Partner

Re: Are you ready to have your computer slowed by 5 to 30%?

In article <hzv3C.1593$Zs1.253@novprvlin0914.provo.novell.com>, Kgroneman
wrote:
> I assume you're talking about when they redesign future processors. I really
> doubt they'll be fixing/replacing existing chips, but I could be wrong.


Possibly. But it will also involve figuring out OS code changes that may well
mitigate the problem without slowing down the system.
As for replacing existing chips, it has happened before, but was a pain enough
that the remaining work arounds were more typically used. (Original Pentium
floating point bug comes to mind).


And now Randall Munroe has joined in the fun of talking about these flaws.
https://xkcd.com/1938/
and the explainers of that comic do help with translating the problem into more
plain language for us at http://www.explainxkcd.com/wiki/index.php/1938


Andy of
http://KonecnyConsulting.ca in Toronto
Knowledge Partner
http://forums.novell.com/member.php/75037-konecnya
If you find a post helpful and are logged in the Web interface, please show
your appreciation by clicking on the star below. Thanks!

___
Andy of Konecny Consulting in Toronto
Knowledge Partner Profile
If you find a post helpful, click the Like button below. Thanks!
0 Likes
ScorpionSting Absent Member.
Absent Member.

Re: Are you ready to have your computer slowed by 5 to 30%?

Australia's take on them:

Meltdown affects only Intel chips and can be patched, while Spectre affects chips by all three major makers - Intel, AMD and ARM Holdings - and may require replacement of the CPU hardware to be fully mitigated.


https://www.itnews.com.au/news/govt-certified-clouds-face-questions-on-chip-flaws-480645

Visit my Website for links to Cool Solution articles.
0 Likes
Community Manager kgroneman Community Manager
Community Manager

Re: Are you ready to have your computer slowed by 5 to 30%?

Oh yea. I'll bet governmental agencies are going nuts over this.

--
Kim - 1/8/2018 8:06:32 AM
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
0 Likes
ScorpionSting Absent Member.
Absent Member.

Re: Are you ready to have your computer slowed by 5 to 30%?

Both Government and Financial Institutions....even though the "experts" have said there is no sign either exploit has been utilised yet.

Visit my Website for links to Cool Solution articles.
0 Likes
Community Manager kgroneman Community Manager
Community Manager

Re: Are you ready to have your computer slowed by 5 to 30%?

Hey ScorpionSting:

>even though the "experts"
>have said there is no sign either exploit has been utilised yet.


You can bet that now it's public someone is trying.

--
Kim - 1/8/2018 2:11:55 PM
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
0 Likes
tombott
New Member.

Re: Are you ready to have your computer slowed by 5 to 30%?

Good write-up from Eden Upton at the Raspberry Pi Foundation on why the Pi is excluded:

https://www.raspberrypi.org/blog/why-raspberry-pi-isnt-vulnerable-to-spectre-or-meltdown/
0 Likes
The opinions expressed above are the personal opinions of the authors, not of Micro Focus. By using this site, you accept the Terms of Use and Rules of Participation. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.) and Hewlett Packard Enterprise Company. As of September 1, 2017, the Material is now offered by Micro Focus, a separately owned and operated company. Any reference to the HP and Hewlett Packard Enterprise/HPE marks is historical in nature, and the HP and Hewlett Packard Enterprise/HPE marks are the property of their respective owners.