Re: Mainline kernel OLTP performance update

[Christoph Lameter]

On Thu, 12 Feb 2009, Zhang, Yanmin wrote:

> ïThe default order of ïkmalloc-8192 on 2*4 stoakley is an issue of calculate_order.
>
>
> slab_size       order           name
> -------------------------------------------------
> 4096            3               sgpool-128
> 8192            2               kmalloc-8192
> 16384           3               kmalloc-16384
>
> ïkmalloc-8192's default order is smaller than ïsgpool-128's.

You reverted the page allocator passthrough patch before this right?
Otherwise kmalloc-8192 should not exist and allocation calls for 8192
bytes would be converted inline to request of an order 1 page from the
page allocator.