Re: Linux Meltdown (KPTI) fix and how it affects performance?

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Hi all,

Is anyone getting useful results with your benchmarking? I've prepared
two test machines/pools and don't see any definitive slowdown with
patched kernels from CentOS [1].

I wonder if Ceph will be somewhat tolerant of these patches, similarly
to what's described here:
http://www.scylladb.com/2018/01/07/cost-of-avoiding-a-meltdown/

Cheers, Dan

[1] Ceph v12.2.2, FileStore OSDs, kernels 3.10.0-693.11.6.el7.x86_64
vs the ancient 3.10.0-327.18.2.el7.x86_64
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