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Message-ID: <20080609114132.GA5028@elte.hu> Date: Mon, 9 Jun 2008 13:41:32 +0200 From: Ingo Molnar <mingo@...e.hu> To: Németh Márton <nm127@...email.hu> Cc: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [regression][bisected] ~90,000 wakeups as of 2.6.26-rc3 * Németh Márton <nm127@...email.hu> wrote: > Hi, > > there is a problem in 2.6.26-rc3 which was not there in case of > 2.6.25: the CPU wakes up ~90,000 times per sec instead of ~60 per sec. > > I also "git bisected" the problem, the result is: > > 6e908947b4995bc0e551a8257c586d5c3e428201 is first bad commit > commit 6e908947b4995bc0e551a8257c586d5c3e428201 > Author: Ingo Molnar <mingo@...e.hu> > Date: Fri Mar 21 14:32:36 2008 +0100 > > x86: fix ioapic bug again thanks for tracking this down. Could you check whether the problem is also fixed in latest -tip? In particular the tip/x86/apic branch should properly solve this. You can pick up -tip via: http://people.redhat.com/mingo/tip.git/README but those tip/x86/apic fixes are too intrusive for v2.6.26, so i've queued up your revert into tip/x86/urgent, for v2.6.26 merging. Would be nice if you could check -tip though, to make sure we dont reintroduce the same problem again in v2.6.27. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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