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#1 2018-01-04 00:01

crosscourt
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Registered: 2017-05-07
Posts: 1,475

Intel cpu design flaw forces Linux/Windows redesign

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#2 2018-01-04 00:25

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

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#3 2018-01-04 00:43

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

Heres an update,  www.eweek.com/security/kpti-intel-chip-flaw-exposes-security-risks

Add the Intel ME issues that had to be fixed thru bios updates, its not been a good situation.

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#4 2018-01-04 03:14

JimW
Member
Registered: 2015-12-08
Posts: 292

Re: Intel cpu design flaw forces Linux/Windows redesign

Someone must have said they were getting bored and wished something would happen!
Careful what you wish for, it may come true!

Thanks CC!

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#5 2018-01-04 04:49

tlmiller76
Member
From: AZ, USA
Registered: 2016-11-29
Posts: 276

Re: Intel cpu design flaw forces Linux/Windows redesign

Yeah, the AMD Ryzen team must be celebrating this discovery since that's not affected by this bug.


q4os machine:  Acer Aspire 1 14:  Intel Celeron N3450/4 GB DDR3/32 GB eMMC/Qualcomm QCA9377AC + BT/Intel HD 500/14" 1920x1080 LCD

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#6 2018-01-04 20:19

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

Unforunately AMD isnt off the hook as Meltdown affects everything except AMD but another issue Spectre affects all cpus including AMD. This is what Intel was referring to with their comments.  More here,  www.rockpapershotgun.com/2018/01/04/intel-amd-cpu-meltdown/

www.techspot.com/news/72576-massive-cpu-flaws-get-name-meltdown-spectre-what.html


Meltdown and Spectre  between them affect all modern cpus.

Last edited by crosscourt (2018-01-04 22:46)

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#7 2018-01-04 22:58

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

Patches are available for Meltdown  but I posted a thread in feature request to see if the devs will be making those patches available.

Windows 10 patch is out but the Win7/8 patches wont be out till next tuesday.

The patches may cause performance issues depending on how you use your system and ive seen quotes of 19-23% on average.

Spectre patches Im not sure.

Last edited by crosscourt (2018-01-04 23:01)

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#8 2018-01-04 23:40

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

Heres another good article to better understand the situation,
www.anandtech.com/show/12214/understanding-meltdown-and-spectre

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#9 2018-01-05 03:15

tlmiller76
Member
From: AZ, USA
Registered: 2016-11-29
Posts: 276

Re: Intel cpu design flaw forces Linux/Windows redesign

Yes, spectre affects AMD, but the meltdown patches are the ones that are going to give a permformance hit, not spectre from what I've read.


q4os machine:  Acer Aspire 1 14:  Intel Celeron N3450/4 GB DDR3/32 GB eMMC/Qualcomm QCA9377AC + BT/Intel HD 500/14" 1920x1080 LCD

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#10 2018-01-06 01:18

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

Spectre patches its a bit of an unknown at this point and Im not defending Intel but flaws/errata have always existed in various hardware and my main concern is getting people protected.  Given the abilities of present systems and the fact that the speed penalties will vary with the app I doubt its going to turn into a major issue performance wise.

Last edited by crosscourt (2018-01-06 02:35)

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#11 2018-01-06 02:04

tlmiller76
Member
From: AZ, USA
Registered: 2016-11-29
Posts: 276

Re: Intel cpu design flaw forces Linux/Windows redesign

I don't know, some of the initial tests are showing double digit performance hits from these patches when benched on real hardware.

Last edited by tlmiller76 (2018-01-06 02:04)


q4os machine:  Acer Aspire 1 14:  Intel Celeron N3450/4 GB DDR3/32 GB eMMC/Qualcomm QCA9377AC + BT/Intel HD 500/14" 1920x1080 LCD

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#12 2018-01-06 02:41

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

As I said above the average was 19-23% but further tests showed that varied considerably. No doubt meltdown causes issues but if youre already using a very good system and you end up with a 20% hit is it going to be a huge issue?    Its so dependent on the app as to wehter youll see major or minor performance hits.  This type of thing has been around for years both with errata and individual issues with specific architectures. 

By the time this is patched and ok, the hardware will be even faster and down the road those losses will be recovered.

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#13 2018-01-07 18:46

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

Gees, here comes the class action suits(reported by a number of tech sites) against Intel and probably against others as this continues to play out.

Last edited by crosscourt (2018-01-07 18:47)

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#14 2018-01-08 10:03

Rademes
Member
Registered: 2015-12-13
Posts: 316

Re: Intel cpu design flaw forces Linux/Windows redesign

That still again and again reminds me, that Intel Core Quad Q9550 processor was THE BEST processor from ever made!
https://ark.intel.com/products/33924/In … 33-MHz-FSB
8 years of work without any flaws!

Last edited by Rademes (2018-01-08 10:06)

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#15 2018-01-08 21:07

crosscourt
Member
Registered: 2017-05-07
Posts: 1,475

Re: Intel cpu design flaw forces Linux/Windows redesign

It was a good processor but this problem affects a nuge number of older and newer processors.

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