| Message ID | 1489340008-77897-3-git-send-email-bhanuprakash.bodireddy@intel.com |
|---|---|
| State | Accepted |
| Delegated to: | Darrell Ball |
| Headers | show |
On Sun, Mar 12, 2017 at 05:33:26PM +0000, Bhanuprakash Bodireddy wrote: > Update the documentation with the information on the megaflow hits > observed with the default 'emc-insert-inv-prob' value. Also add the > recommended setting for achieving higher forwarding performance. > > Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodireddy@intel.com> > CC: Ciara Loftus <ciara.loftus@intel.com> > CC: Georg Schmuecking <georg.schmuecking@ericsson.com> Thanks for updating the documentation! I applied this to master. (However, I think it's better if we can make the switch self-tuning rather than requiring the user to understand traffic patterns and then tune it by hand. I hope that we can improve that later--and then delete the tuning documentation.)
diff --git a/Documentation/howto/dpdk.rst b/Documentation/howto/dpdk.rst index dc63f7d..3bd9e07 100644 --- a/Documentation/howto/dpdk.rst +++ b/Documentation/howto/dpdk.rst @@ -398,6 +398,14 @@ where: If ``N`` is set to 1, an insertion will be performed for every flow. If set to 0, no insertions will be performed and the EMC will effectively be disabled. +With default ``N`` set to 100, higher megaflow hits will occur initially +as observed with pmd stats:: + + $ ovs-appctl dpif-netdev/pmd-stats-show + +For certain traffic profiles with many parallel flows, it's recommended to set +``N`` to '0' to achieve higher forwarding performance. + For more information on the EMC refer to :doc:`/intro/install/dpdk` . .. _dpdk-ovs-in-guest:
Update the documentation with the information on the megaflow hits observed with the default 'emc-insert-inv-prob' value. Also add the recommended setting for achieving higher forwarding performance. Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodireddy@intel.com> CC: Ciara Loftus <ciara.loftus@intel.com> CC: Georg Schmuecking <georg.schmuecking@ericsson.com> --- Documentation/howto/dpdk.rst | 8 ++++++++ 1 file changed, 8 insertions(+)