diff options
| author | Han Zhou <hzhou@ovn.org> | 2023-01-16 19:01:29 -0800 |
|---|---|---|
| committer | Ilya Maximets <i.maximets@ovn.org> | 2023-01-27 16:09:10 +0100 |
| commit | e5b3cb9995445cd83ab1d2811bfd79ca03dd46d4 (patch) | |
| tree | 1fe5906650bca821ee7dd35da826c154eeb31ede /vswitchd | |
| parent | ebaee446240133f5ec5064553535dfe392f60999 (diff) | |
| download | openvswitch-e5b3cb9995445cd83ab1d2811bfd79ca03dd46d4.tar.gz | |
revalidator: Allow min-revalidator-pps to be 0.
Today the minimum value for this setting is 1. This patch allows it to
be 0, meaning not checking pps at all, and always do revalidation.
This is particularly useful for environments where some of the
applications with long-lived connections may have very low traffic for
certain period but have high rate of burst periodically. It is desirable
to keep the datapath flows instead of periodically deleting them to
avoid burst of packet miss to userspace.
When setting to 0, there may be more datapath flows to be revalidated,
resulting in higher CPU cost of revalidator threads. This is the
downside but in certain cases this is still more desirable than packet
misses to user space.
Signed-off-by: Han Zhou <hzhou@ovn.org>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Diffstat (limited to 'vswitchd')
| -rw-r--r-- | vswitchd/vswitch.xml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml index 2b57fc0e3..64f23302d 100644 --- a/vswitchd/vswitch.xml +++ b/vswitchd/vswitch.xml @@ -205,10 +205,11 @@ </column> <column name="other_config" key="min-revalidate-pps" - type='{"type": "integer", "minInteger": 1}'> + type='{"type": "integer", "minInteger": 0}'> <p> Set minimum pps that flow must have in order to be revalidated when revalidation duration exceeds half of max-revalidator config variable. + Setting to 0 means always revalidate flows regardless of pps. </p> <p> The default is 5. |