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Date: 01 Oct 2007 12:01:24 +0200 From: Andi Kleen <andi@...stfloor.org> To: "Denys" <nuclearcat@...learcat.com> Cc: linux-kernel@...r.kernel.org Subject: Re: 2.6.21 -> 2.6.22 & 2.6.23-rc8 performance regression "Denys" <nuclearcat@...learcat.com> writes: > by mistake i will miss a point (it can detect bug easily, IF softirq in > mpstat 1 will jump up to 30+%. On 2.6.21 it is always staying +-10%, on > "buggy" version it jumps up to 100%. Now cause less load at night up to 30- > 50%, so on hardware it is not very noticeable (thats why maybe not much > feedbacks), i am trying to utilise hardware maximum as possible - so i feel > regressions much more. You could use oprofile to find where the CPU time is spent -Andi - 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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