This commit adds a new configuration "disable-stats-update" in
"other_config" of Open_Vswitch table. When set, it allows user
to disable the statistics update to OVSDB. This can greatly reduce
the cpu consumption when statistics is not used.
Signed-off-by: Alex Wang <al...@nicira.com>
---
vswitchd/bridge.c | 12 ++++++++++--
vswitchd/vswitch.xml | 5 +++++
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c
index c3e8588..ba680cd 100644
--- a/vswitchd/bridge.c
+++ b/vswitchd/bridge.c
@@ -161,6 +161,9 @@ static unsigned int idl_seqno;
/* Track changes to port connectivity. */
static uint64_t connectivity_seqno = LLONG_MIN;
+/* Statistics update disabled? */
+static bool disable_stats_update = false;
+
/* Each time this timer expires, the bridge fetches interface and mirror
* statistics and pushes them into the database. */
#define IFACE_STATS_INTERVAL (5 * 1000) /* In milliseconds. */
@@ -2333,8 +2336,10 @@ bridge_run(void)
}
}
+ disable_stats_update = smap_get_bool(&cfg->other_config,
+ "disable-stats-update", false);
/* Refresh interface and mirror stats if necessary. */
- if (time_msec() >= iface_stats_timer) {
+ if (time_msec() >= iface_stats_timer && !disable_stats_update) {
if (cfg) {
struct ovsdb_idl_txn *txn;
@@ -2418,7 +2423,10 @@ bridge_wait(void)
HMAP_FOR_EACH (br, node, &all_bridges) {
ofproto_wait(br->ofproto);
}
- poll_timer_wait_until(iface_stats_timer);
+
+ if (!disable_stats_update) {
+ poll_timer_wait_until(iface_stats_timer);
+ }
}
system_stats_wait();
diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 78594e7..b9f8042 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -72,6 +72,11 @@
host as displayed by <code>xe host-list</code>.
</column>
+ <column name="other_config" key="disable-stats-update"
+ type='{"type": "boolean"}'>
+ Disable the statistics update to OVSDB. Default is false.
+ </column>
+
<column name="other_config" key="flow-restore-wait"
type='{"type": "boolean"}'>
<p>
--
1.7.9.5
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