netdev - Re: r8169 (+others ?) and note_interrupt performance hit on 2.6.30.x

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Message-ID: <20090726091803.GA28374@electric-eye.fr.zoreil.com>
Date:	Sun, 26 Jul 2009 11:18:03 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Michal Soltys <soltys@....info>
Cc:	netdev@...r.kernel.org
Subject: Re: r8169 (+others ?) and note_interrupt performance hit on
	2.6.30.x

Michal Soltys <soltys@....info> :
[...]
> I did some quick oprofile, and noticed one new call -
> note_interrupt - which wasn't present in the earlier kernel,
> taking majority of the cpu time, relatively to the rest, e.g.:
>
> samples  cum. samples  %        cum. %     symbol name
> 90984    90984         42.8695  42.8695    note_interrupt

May be some screaming irq.

Do your /proc/interrupts look the same with both kernels ?

-- 
Ueimor
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