From: "Martin J. Bligh" I'd forgotten that I'd set this to only fire every 20s in the past, because it would rebalance too agressively. That seems to be fixed now, so we should turn it back on. kernel/sched.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) diff -puN kernel/sched.c~turn-on-NUMA-rebalancing kernel/sched.c --- 25/kernel/sched.c~turn-on-NUMA-rebalancing 2003-04-19 21:02:18.000000000 -0700 +++ 25-akpm/kernel/sched.c 2003-04-19 21:02:18.000000000 -0700 @@ -1091,7 +1091,7 @@ out: #define IDLE_REBALANCE_TICK (HZ/1000 ?: 1) #define BUSY_REBALANCE_TICK (HZ/5 ?: 1) #define IDLE_NODE_REBALANCE_TICK (IDLE_REBALANCE_TICK * 5) -#define BUSY_NODE_REBALANCE_TICK (BUSY_REBALANCE_TICK * 100) +#define BUSY_NODE_REBALANCE_TICK (BUSY_REBALANCE_TICK * 2) #ifdef CONFIG_NUMA static void balance_node(runqueue_t *this_rq, int idle, int this_cpu) _