Hi Alex, Thanks for your help.
I am using the following command to test CPU usage. mpstat -P ALL 1 I was using 3.12 kernel version and you are using 3.13.0-30-generic version.Please let me know if this can be the issue?? On Sat, Dec 6, 2014 at 5:04 AM, Alex Wang <al...@nicira.com> wrote: > Hey Rahul, > > Could you help confirm the following: > > 1. did you use vm or bare metal machine for testing? > > 2. how do you measure the cpu utilization of ovs and kernel bridge? > > > We ran some throughput tests, and we observed constant better > performance over the Linux bridge. > > Below is a set of our own throughput test result using ovs branch-2.3. > > Plateform: > Server Dell R620, running Ubuntu 14.04 (3.13.0-30-generic), NIC is Intel > X540. > > Flow: > Single flow, "in_port=1,actions:output=2" > > Traffic type: > - unidirectional TCP throughput using Spirent (1 flow and 128 flows). > > > *Throughput view (unit: Gbit/s):* > > Linux Bridge, > Frame Size1 flow128 flow780.6021.5121280.9812.1892561.8155.4335123.252 > 5.29910246.65810.015149.6849.98790009.92110.0 > > OVS Branch-2.3: > Frame Size1 flow128 flow780.78.2581281.09810.02561.89810.05123.69410.01024 > 7.1910.015149.8849.98790009.89910.0 > > > > *Frame Per Second view (unit: Frames/s):* > > Linux Bridge, > Frame Size1 flow128 flow78768057192901212882891218491122568220702460630512 > 76405812450201024797193119731815147891418138029000137491138581 > > OVS Branch-2.3: > Frame Size1 flow128 flow788928571053370712892729984459462568593864528985 > 51286805523496241024860881119731815148054128138029000137181138581 > > > Thanks, > Alex Wang, > > On Wed, Nov 26, 2014 at 10:35 PM, Rahul Arora <rahul1991.ar...@gmail.com> > wrote: > >> Hi Team, >> >> We are doing comparison of throughput and CPU consumption between OVS >> 2.3.0 and kernel bridge with different packet size. >> >> We are observing huge difference in performance. With frame size 64 and >> 128 bytes unidirectional traffic from port1 to port2 below are the numbers. >> >> >> *OVS 2.3.0 (Dual core with matching flow in kernel space, kernel 3.12)* >> >> * kernel bridge(Dual Core System, kernel 3.12) * *FRAME SIZE* *Throughput >> unidirectional (Mbps)* *CPU Usage %* *VS* *FRAME SIZE* *Throughput >> (Mbps)* *CPU Usage %* 64 375 100 64 487 100 128 747 100 128 864 40 256 >> 927 10 256 927 5 320 941 8 320 941 4 384 950 6 384 950 4 448 957 4 448 >> 957 3 512 962 3 512 962 3 1024 980 1 1024 980 1 1500 986 1 1500 986 1 >> We have matching flow in kernel space with in_port=1 and action=output:2 >> and flow is matching in kernel space >> >> How we can improve the performance of OVS i.e. increasing the throughput >> and decrease CPU consumption with lower frame size. >> >> _______________________________________________ >> discuss mailing list >> discuss@openvswitch.org >> http://openvswitch.org/mailman/listinfo/discuss >> >> >
_______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
