Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

David Miller
2007-11-02T02:51:17Z

From: Christoph Lameter <clameter@sgi.com>
Date: Thu, 1 Nov 2007 18:06:17 -0700 (PDT)

> A reasonable implementation for 64 bit is likely going to depend on
> reserving some virtual memory space for the per cpu mappings so that they
> can be dynamically grown up to what the reserved virtual space allows.
>
> F.e. If we reserve 256G of virtual space and support a maximum of 16k cpus
> then there is a limit on the per cpu space available of 16MB.

Now that I understand your implementation better, yes this
sounds just fine.