Re: [PATCH] expand micro-optimizations in kernel to newer model CPUs

From: Austin S Hemmelgarn
Date: Fri Dec 13 2013 - 07:37:33 EST

On 2013-12-09 22:51, David Heidelberger wrote:
> Hello,
> this patch is used in Gentoo geek-sources and mptcp-sources (and
> probably in lot other kernel sources sets). So, there was lot testing.
> It's not _big_ performance difference, but -mtune=native is nice to have.
> It could be great, if this kernel option could be fully utilized without
> need of additional patching.

This really depends on how you define 'big'. Even a 1% performance
increase is significant for a realtime system, and for someone with a
cluster of systems, getting even a small improvement in performance on
all of the systems could mean a huge increase in effective processing power.
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