Hi all, Just a quick break from my holiday in Philadelphia (swapped forecast 40C on Saturday in Melbourne for -10C forecast here) to let folks know about what looks like a longstanding Intel CPU design flaw that has security implications.
There appears to be no microcode fix possible and the kernel fix will incur a significant performance penalty, people are talking about in the range of 5%-30% depending on the generation of the CPU. :-( https://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/ There's a post on the PostgreSQL site that measures the impact, El Reg summarises the impact as: https://twitter.com/TheRegister/status/948342806367518720?ref_src=twsrc%5Etfw Best case: 17% slowdown Worst case: 23% Here's the post about the measured impact: https://www.postgresql.org/message-id/20180102222354.qikjmf7dvnjgb...@alap3.anarazel.de This is going to be interesting I think... All the best, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
