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Meltdown & Spectre Information and Discussion

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Re: Meltdown & Spectre Information and Discussion
« Reply #128 on: February 28, 2018, 09:51:44 AM »
 

trinidad

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https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown/TechFAQ

I doubt microcode updation will ever appear for anything older than Skylake, and though Intel is already facing over 30 litigations I expect class actions to branch out to include OEMs Dell, HP, Lenovo, and Asus. We've only just begun in Linux with retpoline and it's going to be an application by application case instance without microdode updation for older CPUs. Worse off MS is riddled with potential sleeper applications and the Spring update is probably going to kill off hordes of current Windows 10 users on machines older than Skylake who will find themselves unable to connect to their financial institutions.

TC
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.
 

Re: Meltdown & Spectre Information and Discussion
« Reply #127 on: February 28, 2018, 04:42:54 AM »
 

newtusmaximus

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Re Speed / performance tests. as per my previous post, is there a simple "idiots" guide as to what the results means in real life for the average  computer user?  Thanks
2006 - HP DC7700p ultraslim Desktop Intel 6300 cpu  4GB Ram LL3.8 64bit.
2007 - Fujitsu Siemens V3405 Laptop  2 GB Ram LL3.6 32bit. Now 32bit Debian 9 + nonfree.
2006 - Fujitsu Siemens Si1520 Laptop Intel T720 cpu 3GB Ram   LL5.6 64 Bit
2003 - RETIRED Toshiba Satellite Pro A10 1 GB RAM LL2.8 32bit
 

Re: Meltdown & Spectre Information and Discussion
« Reply #126 on: February 27, 2018, 06:00:21 PM »
 

Ottawagrant

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My HP compaq is 9 years old, 3.33MHz, duo core w/8gb RAM. Absolutely no slowdown with the patch installed. My Windows 10 computers, with whatever patch Microsoft has issued, all show slowdown. I only have one computer with an AMD processor, so I use that if I have to use Windows. Next month is Microsoft's Spring update to Windows 10. Better check the drug store flyers for antacid.
 

Re: Meltdown & Spectre Information and Discussion
« Reply #125 on: February 27, 2018, 01:42:21 PM »
 

TheDead

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Thanks @newtusmaximus but  I have no clue what the benchmark numbers mean either. ;)
Guess I'll have to bench the machine before and after all the patches.

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Re: Meltdown & Spectre Information and Discussion
« Reply #124 on: February 27, 2018, 08:57:32 AM »
 

newtusmaximus

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Vulnerabilities resolved :)
Speed?? has it been reduced.  Tests below.


-Computer-
Processor      : 2x Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
Memory      : 4037MB (2138MB used)
-Version-
Kernel      : Linux 4.4.0-116-generic (x86_64)

Distribution      : Linux Lite 3.6
-Current Session-
Computer Name      : linuxlite-HP-Compaq-dc7700p-Ultra-slim-Desktop
Desktop Environment      : XFCE 4
-Misc-
Uptime      : 6 hours, 10 minutes
Load Average      : 0.42, 0.56, 0.38


-CPU Blowfish-
<big><b>This Machine</b></big>   1867 MHz   9.806   
Intel(R) Celeron(R) M processor         1.50GHz   (null)   26.1876862   
PowerPC 740/750 (280.00MHz)   (null)   172.816713

-CPU CryptoHash-
<big><b>This Machine</b></big>   1867 MHz   137.318   

-CPU Fibonacci-
<big><b>This Machine</b></big>   1867 MHz   5.082   
Intel(R) Celeron(R) M processor         1.50GHz   (null)   8.1375674   
PowerPC 740/750 (280.00MHz)   (null)   58.07682   

-CPU N-Queens-
<big><b>This Machine</b></big>   1867 MHz   17.196   

-FPU FFT-
<big><b>This Machine</b></big>   1867 MHz   4.524   
   
-FPU Raytracing-
<big><b>This Machine</b></big>   1867 MHz   11.347   
Intel(R) Celeron(R) M processor         1.50GHz   (null)   40.8816714   
PowerPC 740/750 (280.00MHz)   (null)   161.312647

No idea what the above means.  perhaps those more knowledgeable can comment??
« Last Edit: February 27, 2018, 09:01:35 AM by newtusmaximus »
2006 - HP DC7700p ultraslim Desktop Intel 6300 cpu  4GB Ram LL3.8 64bit.
2007 - Fujitsu Siemens V3405 Laptop  2 GB Ram LL3.6 32bit. Now 32bit Debian 9 + nonfree.
2006 - Fujitsu Siemens Si1520 Laptop Intel T720 cpu 3GB Ram   LL5.6 64 Bit
2003 - RETIRED Toshiba Satellite Pro A10 1 GB RAM LL2.8 32bit
 

Re: Meltdown & Spectre Information and Discussion
« Reply #123 on: February 26, 2018, 09:42:37 PM »
 

The Repairman

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« Last Edit: July 14, 2018, 10:16:05 PM by The Repairman »
 

Re: Meltdown & Spectre Information and Discussion
« Reply #122 on: February 26, 2018, 07:16:52 PM »
 

TheDead

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Sooo, if Iím on 4.10, I have to revert to 4.4.0-116 to get the fix?
I would think that you would be able to use the 4.15 kernel which you can download and install from the Synaptic Package Manager aka Install/Remove Software.

Go into Synaptic Package Manager / Install/Remove Software center and install linux-headers 4.15 first and then install linux-image 4.15 second.

Do a reboot and you should boot into the new 4.15 kernel.

Do not remove existing kernel in case the new kernel fails to boot.

--------------------------------------------------------------------------------------------------------------------------------

Update
It appears that Lite Tweaks in the Menu under System has a kernel installer so you might want to give that a look at also.


Don't hold me to this as I'm only a Linux Lite user and not a Linux Guru.

Thanks and yep,  I'm gonna keep older kernels because last time I tried 4.13, got a kernel panic on boot. ;)
If 4.15 breaks, I'll go the 4.4.0-116 route.

Now time to read if those fixes slow CPUs down or not, whick was the big worry in the beginning. :-O

Cheers!
- TheDead (TheUxNo0b)

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Re: Meltdown & Spectre Information and Discussion
« Reply #121 on: February 25, 2018, 05:06:34 PM »
 

The Repairman

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« Last Edit: July 14, 2018, 10:15:45 PM by The Repairman »
 

Re: Meltdown & Spectre Information and Discussion
« Reply #120 on: February 25, 2018, 10:07:06 AM »
 

TheDead

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Sooo, if Iím on 4.10, I have to revert to 4.4.0-116 to get the fix?
- TheDead (TheUxNo0b)

If my blabbering was helpful, please click my [Thank] link.
 

Re: Meltdown & Spectre Information and Discussion
« Reply #119 on: February 24, 2018, 10:39:29 AM »
 

Jerry

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Re: Meltdown & Spectre Information and Discussion
« Reply #118 on: February 24, 2018, 10:30:48 AM »
 

The Repairman

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« Last Edit: July 14, 2018, 10:15:16 PM by The Repairman »
 

Re: Meltdown & Spectre Information and Discussion
« Reply #117 on: February 23, 2018, 06:07:34 PM »
 

humdinger70

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The 4.4.0-116 kernel now fixes everything. I ran the checker after install and boot of the new kernel and now all three variants say 'NOT VULNERABLE'.
 

Re: Meltdown & Spectre Information and Discussion
« Reply #116 on: February 09, 2018, 06:41:50 PM »
 

The Repairman

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« Last Edit: July 14, 2018, 10:14:44 PM by The Repairman »
 

Re: Meltdown & Spectre Information and Discussion
« Reply #115 on: February 09, 2018, 05:54:40 PM »
 

The Repairman

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« Last Edit: July 14, 2018, 10:14:22 PM by The Repairman »
 

Re: Meltdown & Spectre Information and Discussion
« Reply #114 on: February 09, 2018, 05:30:22 PM »
 

trinidad

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Here are my results on Ubuntu 16.04 LTS with your listed kernel. The long command is correct for Ubuntu and/or LL. The unpatched frowny face is for no exiting Intel microcode updates as yet.

https://imgur.com/a/wX54Z

TC
« Last Edit: February 09, 2018, 05:37:33 PM by trinidad »
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.
 

 

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