F**CKWIT, aka KAISER, aka KPTI – Intel CPU flaw needs low-level
Paul Ducklin, Sophos
January 4, 2018
In the near future –
in all likelihood, later this month – at least Windows and Linux
will get security updates that change the way those operating
systems manage memory on Intel processors.
There’s a lot of
interest, excitement even, about these changes: they work at a
very low level and are likely to affect performance.
The slowdown will
depend on many factors, but
one report suggests
that database servers running on affected hardware might suffer
a performance hit around 20%.
hardware” seems to include most Intel CPUs released in recent
years; AMD processors, apparently, have different internals and
are immune to this problem.
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