Hi, Harsha. I was thinking about 3x performance drop due to enabling of experimental API that you reported during the meeting today. I just want to clarify one thing to be sure that you're not making the same mistake as I did.
If you're just building OVS without specifying CFLAGS, binaries will be compiled with the default '-g -O2'. However, any manipulations with CLFAGS will result with overriding of these default flags. Therefore, ./configure CLFAGS='-DALLOW_EXPERIMENTAL_API' will result in building OVS with the compiler default optimization level, which is -O0. On my setup in a simple test, -O2 works approximately 3-4x faster than -O0. So, I'm wondering if you just didn't add '-O2' while building with experimental API, so the results are so low? The correct way to configure would be: ./configure CLFAGS='-DALLOW_EXPERIMENTAL_API -g -O2' I made this mistake several times in the past. And the most recent time it was today. :) Best regards, Ilya Maximets. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
