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Our server recently had a very bad day, and one of the indicators/reasons seems to be that RES interrupts are douple their normal value, but what does this mean ?

(other interrupts: LOC+100%, eth1/TLB +30%)

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They are "Rescheduling interrupts", as far as I can tell they're caused when the kernel moves a process between CPUs to balance the load.

I'm not sure what it means.

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