[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 (file)
--- 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 (file)
--- a/include/asm-i386/topology.h
+++ b/include/asm-i386/topology.h
@@ -81,7 +81,7 @@ static inline int node_to_first_cpu(int node)
        .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 (file)
--- 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 @@ void build_cpu_to_node_map(void);
        .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 (file)
--- a/include/asm-x86_64/topology.h
+++ b/include/asm-x86_64/topology.h
@@ -42,12 +42,11 @@ extern int __node_distance(int, int);
        .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 (file)
--- 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,                    \