[ovs-dev] CPU usage increasing while adding port

[Rahul Arora]

HI Ben

*After adding port it always remains high*.Its not like that while adding
port only it remains high.

I am adding normal Ethernet port of my x86 machine using following commands.


*ovs-vsctl add-br br0*
*ovs-vsctl add-port br0 eth1 *  (suppose my port name is eth1)

Also i will try with the master branch and will let you know the result.





On Fri, Jun 13, 2014 at 8:57 PM, Ben Pfaff <blp at nicira.com> wrote:

> On Fri, Jun 13, 2014 at 07:44:58PM +0530, Rahul Arora wrote:
> > I am working on openvswitch version 2.1.2. But i am facing one issue in
> > this.
> >
> > When i am adding port in a bridge,Then my CPU usage is increasing to
> 100%.
> >
> > When i am commenting the following line in the file (* vim
> > openvswitch-2.1.2/lib/seq.c*)
> >
> > *poll_immediate_wake();      //line number 179//*
> >
> >
> > Then i am getting normal CPU usage.
>
> It should take only a moment (less than 1 second) to add a port.  How
> long is the CPU usage high?
>
> What kind of port are you adding?
>
> Could you try OVS from the master branch?  It has better logging when
> there is high CPU usage, which may help to identify the problem.
>
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