Re: Mainline kernel OLTP performance update

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.