Re: [patch 02/23] SLUB: Rename NUMA defrag_ratio to remote_node_defrag_ratio

On Thu, 8 Nov 2007, Matt Mackall wrote:

I cannot figure out what the number of cycles currently showing on the TSC
have to do with a ratio :(. I could semi-understand if we were counting up
how many cycles were being spent trying to pack objects but that does not
appear to be the case. The comment didn't help a whole lot either. It felt
like a cost for packing, not a ratio

It's just a random number generator. And a bad one: lots of arches
return 0. And I believe at least one of them has some NUMA support.

Do we have a better one? Something with minimal processing overhead? I'd
be glad to switch it.

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