[ovs-dev] [PATCH] ipv6 tunneling: Fix for performance drop introduced by ipv6 tunnel support.

Joe Stringer joe at ovn.org
Tue Jan 12 23:58:12 UTC 2016


On 12 January 2016 at 05:52, Chandran, Sugesh <sugesh.chandran at intel.com> wrote:
> Hi,
> We found that there is a serious performance drop in OVS userspace-datapath after the commit "tunneling: add IPv6 support to netdev_tunnel_config(commit ID :- 3ae91c019019889fbe93aa7dfd6e3747da362b24)" in the OVS tree.  The PHY-PHY throughput dropped almost 25% for 64 byte packets due to this check-in.
> The following patch is for fixing it.
> Let me know your comments/suggestion on it , if any??

Hi Sugesh,

Just so you know, we've recently adopted the linux-style "fixes"
commit message tag which you use to provide the above information to
other developers:

Fixes: 3ae91c019019 ("tunneling: add IPv6 support to netdev_tunnel_config")

You can place these above the "Signed-off-by" line in your commit
message. This helps committers to identify which releases the bug
affects and how far back the fix should go (v2.5? v2.4?). A
description and how to generate it are here:

https://github.com/openvswitch/ovs/commit/5a6b18a979ddda3f9cd8ff774397a9ad02bdc20f



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