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Date: Thu, 12 May 2011 10:31:35 -0500
From: Scott Wood <scottwood@freescale.com>
To: Scott Wood <scottwood@freescale.com>
Subject: Re: [linuxppc-release] [PATCH 1/2] powerpc,	e5500: add networking
	to defconfig
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Cc: Wood Scott-B07421 <B07421@freescale.com>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	Li Yang-R58472 <R58472@freescale.com>
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On Thu, 12 May 2011 10:31:08 -0500
Scott Wood <scottwood@freescale.com> wrote:

> On Thu, 12 May 2011 01:11:03 -0500
> Li Yang-R58472 <R58472@freescale.com> wrote:
> 
> > >diff --git a/arch/powerpc/configs/e55xx_smp_defconfig
> > >b/arch/powerpc/configs/e55xx_smp_defconfig
> > >index 9fa1613..f4c5780 100644
> > >--- a/arch/powerpc/configs/e55xx_smp_defconfig
> > >+++ b/arch/powerpc/configs/e55xx_smp_defconfig
> > >@@ -6,10 +6,10 @@ CONFIG_NR_CPUS=2
> > > CONFIG_EXPERIMENTAL=y
> > > CONFIG_SYSVIPC=y
> > > CONFIG_BSD_PROCESS_ACCT=y
> > >+CONFIG_SPARSE_IRQ=y
> > 
> > Hi Scott,
> > 
> > I remember in previous testing that this option has a negative effect on performance.  Do we really need it to be enabled?
> 
> I didn't change this setting, it just moved due to running it through
> savedefconfig.

What was the performance impact?

-Scott