Re: How reliable is SLAB_HWCACHE_ALIGN?

[Robert Love]

On Wed, 2003-09-10 at 04:16, Ravikiran G Thirumalai wrote:

> Am I missing something or can there really be two objects on the same 
> cacheline even when SLAB_HWCACHE_ALIGN is specified?

No, you are right.

If your object _must_ be cache aligned, use SLAB_MUST_HWCACHE_ALIGN.

But note that this will result in cache aligning objects even if it ends
of wasting a _lot_ of space, such as when debugging is turned on.

I think we only use it for the task_struct_cachep.

	Robert Love


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