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Intel bug incoming? Meltdown and Spectre exploits

AmateurExpert said:
Fair enough for Meltdown, but for Spectre the software mitigations are proving to cause quite a performance loss in some benchmarks. I expect there's research into ways of keeping the performance benefit of speculative execution without leaking data to side channels, but I would expect any notable changes to silicon to take years to get to market.
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Not seen any data for AMD on that tbh, the microcode updates etc are optional. They seem fairly adamant that the chances are just about negligible of actually being effected.
 
AmateurExpert said:
Even without the microcode updates, the patches to the Linux kernel so far have impacted Ryzen and EPYC. Maybe there'll be strong enough proof that Ryzen etc. are not vulnerable to Spectre and so allow them an exception from the mitigations (as with Meltdown), but until then the default is to take the hit.
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Looked on Phoronix but only see meltdown patch data which are now default off. No other references.

Have a link for the comparisons ?
 
AmateurExpert said:
From "Benchmarking Linux With The Retpoline Patches For Spectre":
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Are yes, forgot it's not called spectre the actual work round :o.

Not sure if that includes the serialization patch as AMD is different if it does need it. Think it will take a few months before the fall out from this is known to the full extent tbh.

Going on the news that keeps seeping + benches with only Intel's in the mix am fairly certain AMD is either lucky or not so effected.
 
LambChop said:
anyone know what the performance hits will be ? looking to buy an 8700k for an additional setup but dont want to if its going to be crippled in anyway
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Mostly server side that's hit, you'll be fine

Edit:

That's not to say that there might be no further problems from it later on though
 
DataVampire said:
If the cpus that are being sold now claim to be for example 3.5 stock, and you have to install the patches and you get reduced performance, surely they will now have to sell them as say 3.2 or even 3.0 , and if they wont should they not have to sell them as that becuase your now not getting what you pay for ?
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The frequency of the chips has not changed! just how well at a given frequency they perform.
 
It looks like others new about the bug in 2016 :p

doom-meltdown.png
 
fastboy said:
so,being a cynical old git,what happens if you say run a new intel chip and you have all your AV's upto date and you get some data breach due to spectre and actually suffer financially because of this?
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Tough **** basically!

Let's face it, they released coffee lake knowing about the flaws!

People won't care though and they know it, well until you are caught out that is.
 
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