linux-kernel - Re: [LKP] [x86, irq, ACPI] 5fcb864ef90: -3.3%(vm-scalability.throughput) +12.9%(turbostat.%c0)

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Message-ID: <alpine.DEB.2.11.1411240939340.6439@nanos>
Date:	Mon, 24 Nov 2014 09:41:55 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Yuanhan Liu <yuanhan.liu@...ux.intel.com>
cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [LKP] [x86, irq, ACPI] 5fcb864ef90: -3.3%(vm-scalability.throughput)
 +12.9%(turbostat.%c0)

On Mon, 24 Nov 2014, Yuanhan Liu wrote:
> 
> We noticed the below changes on(NOTE: I'm not sure the bisect is correct
> or not, here I report it out JFYI).
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 5fcb864ef90df093d964171539c87ffa0ab49f0f ("x86, irq, ACPI: Implement interfaces to support ACPI based IOAPIC hot-removal")
> 

I really doubt that this commit has anything to do with the observed
behaviour change.

The code in question is only executed at boot time or when a IOAPIC is
physically hotplugged.

Thanks,

	tglx
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