[PATCH] Manfred's patch to distribute boot allocations across nodes
From: Anton Blanchard <anton@samba.org> Distribute boot time memory allocations across all nodes, from Manfred Spraul. We want to spread memory across nodes to avoid all allocations ending up on node 0. Spreading boot time allocations around also helps us to avoid node 0 becoming the hot node. I took it for a spin: buddyinfo before: Node 7, 0 2 1 1 0 2 1 2 1 2 1 2 741 Node 6, 0 0 0 2 0 2 1 1 2 2 2 2 1002 Node 5, 0 0 0 2 0 2 1 2 1 2 2 2 2006 Node 4, 0 0 0 2 0 2 1 2 1 2 2 2 2006 Node 3, 0 0 0 2 0 2 1 2 1 2 2 2 2006 Node 2, 0 0 0 2 0 2 1 2 1 2 2 2 2006 Node 1, 0 0 0 2 0 2 1 1 2 2 2 2 1002 Node 0, 0 0 38 7 0 1 1 1 0 0 0 0 1998 buddyinfo after: Node 7, 0 1 0 1 1 1 1 0 0 0 1 2 738 Node 6, 0 1 0 1 1 1 0 1 0 0 2 2 1002 Node 5, 0 0 0 1 1 1 1 0 0 0 2 2 2006 Node 4, 0 1 0 1 0 1 1 0 0 0 2 2 2006 Node 3, 0 0 0 1 0 1 1 0 0 0 2 2 2005 Node 2, 0 1 0 0 0 0 0 1 0 0 2 2 2006 Node 1, 0 2 1 1 0 1 1 1 0 0 2 2 1002 Node 0, 0 20 45 8 3 0 1 1 1 1 0 1 2004 Change in free memory due to patch: Node 7 -54.08 MB Node 6 -6.33 MB Node 5 -6.09 MB Node 4 -6.14 MB Node 3 -22.15 MB Node 2 -6.05 MB Node 1 -6.12 MB Node 0 107.35 MB As you can see we gained over 100MB on node 0.
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