[Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty
pbisbal at pppl.gov
Mon Jan 8 11:01:31 PST 2018
Any statement from Intel, or any other chip manufacturer regarding the
performance impact of these fixes should be viewed with a healthy dose
of skepticism. These companies have an interest in downplaying the
impact of these exploits/fixes to protect their stock prices.
I would believe the performance of 3rd-party companies who have measured
the performance, like RHEL who support multiple processor vendors (AMD,
Intel, etc.), and have less interest in a specific processor selling
better or worse. I would believe these numbers from RHEL more than I
would those from Intel:
On 01/08/2018 10:31 AM, Xingqiu Yuan wrote:
> Intel recently claimed that their bug fix gives little affect on the
> chip's performances last week.
> On Mon, Jan 8, 2018 at 10:19 AM, Prentice Bisbal <pbisbal at pppl.gov
> <mailto:pbisbal at pppl.gov>> wrote:
> On 01/05/2018 07:35 PM, Gerald Henriksen wrote:
> On Fri, 5 Jan 2018 17:32:19 -0500, you wrote:
> According to several articles I read today:
> Meltdown (1 exploit)is Intel-specific
> Spectre (2 different exploits) affects just about every
> processor on
> the planet.
> This is correct, and the other key difference is that so far
> there is
> only a solution to Meltdown.
> The below linked page has this to say about Spectre:
> "As it is not easy to fix, it will haunt us for quite some time"
> Fedora has linked to this page for more info on the two:
> I haven't checked out that link yet, but from what I read, spectre
> is also much harder to exploit, too, which mitigates the risk of
> spectre to some extent.
> Beowulf mailing list, Beowulf at beowulf.org
> <mailto:Beowulf at beowulf.org> sponsored by Penguin Computing
> To change your subscription (digest mode or unsubscribe) visit
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Beowulf