From: Austin S Hemmelgarn <ahferroin7@gmail.com>
To: David Heidelberger <david.heidelberger@ixit.cz>,
John <da_audiophile@yahoo.com>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] expand micro-optimizations in kernel to newer model CPUs
Date: Fri, 13 Dec 2013 07:37:29 -0500 [thread overview]
Message-ID: <52AAFF89.5080509@gmail.com> (raw)
In-Reply-To: <864985fbeb1d8148439e25ec01f47a67@ixit.cz>
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.
next prev parent reply other threads:[~2013-12-13 12:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-08 15:53 [PATCH] expand micro-optimizations in kernel to newer model CPUs John
2013-12-10 3:51 ` David Heidelberger
2013-12-13 12:37 ` Austin S Hemmelgarn [this message]
[not found] ` <1387051250.86178.YahooMailNeo@web140005.mail.bf1.yahoo.com>
[not found] ` <ce679ca5-bf83-4c2a-9234-859cc7a4206b@email.android.com>
[not found] ` <1387057337.97000.YahooMailNeo@web140004.mail.bf1.yahoo.com>
[not found] ` <52ACECC4.208@zytor.com>
2013-12-15 12:00 ` John
2013-12-15 12:27 ` Richard Weinberger
2013-12-15 12:42 ` John
2013-12-15 13:23 ` Borislav Petkov
2013-12-15 17:31 ` Richard Weinberger
2013-12-16 14:28 ` Ingo Molnar
2013-12-17 12:59 ` Austin S Hemmelgarn
2013-12-15 12:23 ` John
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