"Linus Torvalds: After big Linux performance hit, Spectre v2 patchneeds curbs"
 

"Linus Torvalds: After big Linux performance hit, Spectre v2 patch needs
curbs"

https://www.zdnet.com/article/linus-...h-needs-curbs/

"Patch is causing as much as a 50 percent drop in performance in some
Linux workloads."

Well, that sucks. Reminds one of the good intentions rule, "The road to
Hell is paved with Good Intentions".

Lynn

"Linus Torvalds: After big Linux performance hit, Spectre v2patch needs curbs"
 

On 11/23/18 12:54, Lynn McGuire wrote:
"Linus Torvalds: After big Linux performance hit, Spectre v2 patch needs
curbs"

https://www.zdnet.com/article/linus-...h-needs-curbs/


"Patch is causing as much as a 50 percent drop in performance in some
Linux workloads."

Well, that sucks. Reminds one of the good intentions rule, "The road to
Hell is paved with Good Intentions".

Lynn

I'm pretty sure you can turn the feature OFF. Mitigating Spectre is not
something you normally need to do [unless you host VMs from multiple
customers, or even shared hosting for a single VM, and things of that
nature].

Linux is unlike Win-10-nic, which TAKES AWAY end-user control whenever
possible! Instead, you can compile options in/out or just configure
them the way you want them to with system variables.



--
(aka 'Bombastic Bob' in case you wondered)

'Feeling with my fingers, and thinking with my brain' - me

'your story is so touching, but it sounds just like a lie'
"Straighten up and fly right"

"Linus Torvalds: After big Linux performance hit, Spectre v2patch needs curbs"
 

Big Bad Bob wrote:
On 11/23/18 12:54, Lynn McGuire wrote:
"Linus Torvalds: After big Linux performance hit, Spectre v2 patch
needs curbs"

https://www.zdnet.com/article/linus-...h-needs-curbs/


"Patch is causing as much as a 50 percent drop in performance in some
Linux workloads."

Well, that sucks. Reminds one of the good intentions rule, "The road
to Hell is paved with Good Intentions".

Lynn

Linux is unlike Win-10-nic, which TAKES AWAY end-user control whenever
possible!

With Microsoft, you can check your patch status. There are a
few third party tools

https://www.howtogeek.com/338801/how...n-and-spectre/

https://www.grc.com/inspectre.htm

https://www.ashampoo.com/en/usd/pin/...wn-cpu-checker

Microsoft itself provides a Powershell script, which isn't as nice.

The Intel firmware update is optional with Microsoft. It's
available as a separate download if you want it. This gives
some control over whether you want that level of security
or not. You can use the above tools, to check what has or hasn't
been patched yet.

Paul