Re: Horrible L2 cache effects from kernel compile

dean gaudet (
Wed, 5 Mar 2003 12:19:34 -0800 (PST)

On Mon, 3 Mar 2003, Alan Cox wrote:

> On Mon, 2003-03-03 at 19:13, Linus Torvalds wrote:
> > dentry itself. Yes, you could make it smaller (you could remove the inline
> > string from it, for example, and you could avoid allocating it at
> How about at least making the inline string align to the slab alignment so we
> dont waste space ?

what what be best is the hash chaining pointers and the first N bytes of
the inline name in the same cacheline. for 32B cache lines it looks like
it's at least two misses per chain now. (er, well i'm looking at 2.4

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