On Wed, 20 Jul 2011, Eric Dumazet wrote: > Note that adding ____cacheline_aligned_in_smp on nodelists[] actually > helps performance, as all following fields are readonly after kmem_cache > setup. Well but that is not addresssing the same issue. Could you separate that out? The other question that follows from this is then: Does that alignment compensate for the loss of performance due to the additional lookup in hot code paths and the additional cacheline reference required? The per node pointers are lower priority in terms of performance than the per cpu pointers. I'd rather have the per node pointers requiring an additional lookup. Less impact on hot code paths. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>