Intel CPU performance-loss by security-patch?!?

[syzygy]

I see now, that SF8 bench is always below 2 Mnps previuosly it was about 2 100 000 (Corei5) if I recall correctly so 5% slower .

Is this patch really necessary? I mean - is someone really going to hack a personal PC? Doesn't seem worth any performance loss...

The meltdown vulnerabiltiy of Intel processors is a very serious problem unless you're not connected to the internet and don't run any untrusted software. I'm sure it is already being exploited.

[Paloma]

Where is this patch?
I have not yet been offered it by Mircosoft update ?!

Win 7 prof

[syzygy]

Where is this patch?
I have not yet been offered it by Mircosoft update ?!

Win 7 prof

I'm not sure, but you may have received it already in December or November.

[syzygy]

Where is this patch?
I have not yet been offered it by Mircosoft update ?!

Win 7 prof

I'm not sure, but you may have received it already in December or November.

Hmm, maybe not:
https://www.pcworld.com/article/3245810 ... flaws.html

[Jouni]

I found same bencmarks from June 2017 and after that no slowdown visible even there are some kind of Windows 10 update almost every day.

[Joost Buijs]

Microsoft released some information about Meltdown and Spectre, only the fix for Spectre variant 2 'Branch Target Injection' seems to have a significant impact on performance depending on processor type and OS. This fix also needs a microcode update (via a bios update) before it can or will be enabled.

https://cloudblogs.microsoft.com/micros ... s-systems/

[Paloma]

how did you handle that problem with your pc?

[Michel]

The following link give a very readable explanation of the bugs and how the exploits work

https://blog.cloudflare.com/meltdown-sp ... technical/

[kasinp]

The following link give a very readable explanation of the bugs and how the exploits work

https://blog.cloudflare.com/meltdown-sp ... technical/

Thanks for the link. I have read and still have the same fundamental question about the nature of the attack, and therefore, about the ways to prevent it:

The men in black, or the exploiting code: would that not have to be some kind of malware running on my computer? And if so, why should I not expect that anti-malware software should be able to detect and prevent it? If not today, then at some point when anti-malware developers catch up to it.

Peter

[Milos]

The men in black, or the exploiting code: would that not have to be some kind of malware running on my computer? And if so, why should I not expect that anti-malware software should be able to detect and prevent it? If not today, then at some point when anti-malware developers catch up to it.
Peter

Yes it would have to be a malware, but problem is thanks to the general nature of exploit knowing how the exploit work would make it very easy to write millions of version of the malware that would all have different signatures effectively making it impossible for anti-malware developers to catch up to it.