Re: Please revert [PATCH] user of the jiffies rounding patch: Slab

From: Arjan van de Ven
Date: Sat Apr 28 2007 - 19:51:21 EST

On Sat, 2007-04-28 at 16:35 -0700, Christoph Lameter wrote:

> Hmmm... Yes but that looks like it comes from a different function. Slab
> calls
> __round_jiffies_relative(HZ, cpu))
> And its description says:
> /**
> *
> * The exact rounding is skewed for each processor to avoid all
> * processors firing at the exact same time, which could lead
> * to lock contention or spurious cache line bouncing.

> This is exactly the wrong thing to do.

is it?

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