Re: Mainline kernel OLTP performance update

Christoph Lameter
2009-02-12T15:25:20Z

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

> ﻿The default order of ﻿kmalloc-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
>
> ﻿kmalloc-8192's default order is smaller than ﻿sgpool-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.