has anybody already some experience/results if a patched Linux kernel regarding 
Meltdown/Spectre is affecting performance of Cassandra negatively?

In production, all nodes running in AWS with m4.xlarge, we see up to a 50% 
relative (e.g. AVG CPU from 40% => 60%) CPU increase since Jan 4, 2018, most 
likely correlating with Amazon finished patching the underlying Hypervisor 
infrastructure ...

Anybody else seeing a similar CPU increase?


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