Messages in this thread | | | Subject | Re: 2.6.21 -> 2.6.22 & 2.6.23-rc8 performance regression | From | Andi Kleen <> | Date | 01 Oct 2007 12:01:24 +0200 |
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"Denys" <nuclearcat@nuclearcat.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
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