Re: [PATCH] x86: eliminate redundant/contradicting cache line size config options

Ingo Molnar
2009-11-23T08:35:18Z

* Arjan van de Ven <arjan@infradead.org> wrote:

> On Thu, 19 Nov 2009 09:13:07 +0100
> Nick Piggin <npiggin@suse.de> wrote:
> >
> > My other point was just this, but I don't care too much. But it is
> > worded pretty negatively. The key here is that increasing the value
> > too large tends to only cost a very small amount of size (and no
> > increase in cacheline foot print, only RAM).
>
> 128 has a pretty significant impact on TPC-C benchmarks.....
> it was the top issue until mainline fixed it to default to 64

Mind sending a patch that sets the default to 64 on NUMA too?

P4 based NUMA boxes are ... a bad memory to be forgotten.

Ingo