[PATCH] sched: sched tuning
Do some basic initial tuning.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ia64/kernel/domain.c b/arch/ia64/kernel/domain.c
index fe532c9..afbde79 100644
--- a/arch/ia64/kernel/domain.c
+++ b/arch/ia64/kernel/domain.c
@@ -14,7 +14,7 @@
#include <linux/topology.h>
#include <linux/nodemask.h>
-#define SD_NODES_PER_DOMAIN 6
+#define SD_NODES_PER_DOMAIN 16
#ifdef CONFIG_NUMA
/**
diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h
index 5eb6f61..2461b73 100644
--- a/include/asm-i386/topology.h
+++ b/include/asm-i386/topology.h
@@ -81,7 +81,7 @@
.per_cpu_gain = 100, \
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_EXEC \
- | SD_BALANCE_NEWIDLE \
+ | SD_BALANCE_FORK \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
.balance_interval = 1, \
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index 21cf351..4e64c2a 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -42,25 +42,54 @@
void build_cpu_to_node_map(void);
+#define SD_CPU_INIT (struct sched_domain) { \
+ .span = CPU_MASK_NONE, \
+ .parent = NULL, \
+ .groups = NULL, \
+ .min_interval = 1, \
+ .max_interval = 4, \
+ .busy_factor = 64, \
+ .imbalance_pct = 125, \
+ .cache_hot_time = (10*1000000), \
+ .per_cpu_gain = 100, \
+ .cache_nice_tries = 2, \
+ .busy_idx = 2, \
+ .idle_idx = 1, \
+ .newidle_idx = 2, \
+ .wake_idx = 1, \
+ .forkexec_idx = 1, \
+ .flags = SD_LOAD_BALANCE \
+ | SD_BALANCE_NEWIDLE \
+ | SD_BALANCE_EXEC \
+ | SD_WAKE_AFFINE, \
+ .last_balance = jiffies, \
+ .balance_interval = 1, \
+ .nr_balance_failed = 0, \
+}
+
/* sched_domains SD_NODE_INIT for IA64 NUMA machines */
#define SD_NODE_INIT (struct sched_domain) { \
.span = CPU_MASK_NONE, \
.parent = NULL, \
.groups = NULL, \
- .min_interval = 80, \
- .max_interval = 320, \
- .busy_factor = 320, \
+ .min_interval = 8, \
+ .max_interval = 8*(min(num_online_cpus(), 32)), \
+ .busy_factor = 64, \
.imbalance_pct = 125, \
.cache_hot_time = (10*1000000), \
- .cache_nice_tries = 1, \
+ .cache_nice_tries = 2, \
+ .busy_idx = 3, \
+ .idle_idx = 2, \
+ .newidle_idx = 0, /* unused */ \
+ .wake_idx = 1, \
+ .forkexec_idx = 1, \
.per_cpu_gain = 100, \
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_EXEC \
- | SD_BALANCE_NEWIDLE \
- | SD_WAKE_IDLE \
+ | SD_BALANCE_FORK \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
- .balance_interval = 1, \
+ .balance_interval = 64, \
.nr_balance_failed = 0, \
}
@@ -69,17 +98,21 @@
.span = CPU_MASK_NONE, \
.parent = NULL, \
.groups = NULL, \
- .min_interval = 80, \
- .max_interval = 320, \
- .busy_factor = 320, \
- .imbalance_pct = 125, \
+ .min_interval = 64, \
+ .max_interval = 64*num_online_cpus(), \
+ .busy_factor = 128, \
+ .imbalance_pct = 133, \
.cache_hot_time = (10*1000000), \
.cache_nice_tries = 1, \
+ .busy_idx = 3, \
+ .idle_idx = 3, \
+ .newidle_idx = 0, /* unused */ \
+ .wake_idx = 0, /* unused */ \
+ .forkexec_idx = 0, /* unused */ \
.per_cpu_gain = 100, \
- .flags = SD_LOAD_BALANCE \
- | SD_BALANCE_EXEC, \
+ .flags = SD_LOAD_BALANCE, \
.last_balance = jiffies, \
- .balance_interval = 100*(63+num_online_cpus())/64, \
+ .balance_interval = 64, \
.nr_balance_failed = 0, \
}
diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h
index 802d09b..c1bc3fa 100644
--- a/include/asm-x86_64/topology.h
+++ b/include/asm-x86_64/topology.h
@@ -42,12 +42,11 @@
.cache_nice_tries = 2, \
.busy_idx = 3, \
.idle_idx = 2, \
- .newidle_idx = 1, \
+ .newidle_idx = 0, \
.wake_idx = 1, \
.forkexec_idx = 1, \
.per_cpu_gain = 100, \
.flags = SD_LOAD_BALANCE \
- | SD_BALANCE_NEWIDLE \
| SD_BALANCE_FORK \
| SD_BALANCE_EXEC \
| SD_WAKE_BALANCE, \
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 6655972..0320225 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -91,7 +91,7 @@
.per_cpu_gain = 25, \
.busy_idx = 0, \
.idle_idx = 0, \
- .newidle_idx = 0, \
+ .newidle_idx = 1, \
.wake_idx = 0, \
.forkexec_idx = 0, \
.flags = SD_LOAD_BALANCE \
@@ -121,15 +121,14 @@
.cache_nice_tries = 1, \
.per_cpu_gain = 100, \
.busy_idx = 2, \
- .idle_idx = 0, \
- .newidle_idx = 1, \
+ .idle_idx = 1, \
+ .newidle_idx = 2, \
.wake_idx = 1, \
- .forkexec_idx = 0, \
+ .forkexec_idx = 1, \
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_NEWIDLE \
| SD_BALANCE_EXEC \
- | SD_WAKE_AFFINE \
- | SD_WAKE_BALANCE, \
+ | SD_WAKE_AFFINE, \
.last_balance = jiffies, \
.balance_interval = 1, \
.nr_balance_failed = 0, \