> RECLAIM_DISTANCE is compared against the largest node_distance() in the > system in order to make the decision if zone_reclaim should be enabled for > a system. > > node_distance() uses the SLIT talbe and is a dynamic value provided by > each system. So node_distance is a reasonably meaningful number (providing that the SLIT table is a accurate representation of reality ... about which we are at the mercy of the f/w writers). But I'm still trying to see why RECLAIM_DISTANCE would be different for ia64 systems from other architectures. If 15 is the right number for ia64, why is 20 the right number for powerpc? What if I have a 4-node NUMA system with a NUMA factor of 1.6? SLIT = 10 16 16 16 16 10 16 16 16 16 10 16 16 16 16 10 Should I not use zone reclaim on this system? But with factor=1.5 it would be OK? -Tony - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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