[ovs-discuss] Even with ovs-controller vswitchd is still heavily used

Ben Pfaff blp at nicira.com
Fri Jun 7 16:47:23 UTC 2013


Why did you think that setting secure mode would not use ovs-vswitchd?

On Fri, Jun 07, 2013 at 09:33:31PM +0530, kevin parker wrote:
> I thought setting secure mode would not use ovs-vswitchd, but in my case
> its using both ovs-controller and ovs-vswitchd
> Regards,
> Ananthakrishnan
> 
> 
> On Fri, Jun 7, 2013 at 8:22 PM, Ben Pfaff <blp at nicira.com> wrote:
> 
> > Why do use think it would make a difference?
> >
> > On Fri, Jun 07, 2013 at 08:16:52PM +0530, kevin parker wrote:
> > > Can some one please clarify this,why ovs-vswitchd is used even in secure
> > > mode
> > >
> > >
> > > On Thu, Jun 6, 2013 at 10:58 AM, kevin parker <kevin.parker092 at gmail.com
> > >wrote:
> > >
> > > > and with out controller and in standalone ovs-vswitchd is at ~80% for
> > the
> > > > same traffic.
> > > >
> > > > using
> > > > *ovs-vsctl -V*
> > > > ovs-vsctl (Open vSwitch) 1.4.2
> > > > Compiled Nov 23 2012 12:41:37
> > > >
> > > > *ovs-controller -V*
> > > > ovs-controller (Open vSwitch) 1.4.0+build0
> > > > Compiled Feb 18 2013 13:13:22
> > > > OpenFlow versions 0x1:0x1
> > > >
> > > >
> > > > On Thu, Jun 6, 2013 at 10:28 AM, kevin parker <
> > kevin.parker092 at gmail.com>wrote:
> > > >
> > > >> Mostly HTTP,
> > > >>
> > > >> For confirming bench marked Apache with ab, ovs-vswitchd reached 100%
> > and
> > > >> ovs-controller 14%
> > > >>
> > > >> ovs-dpctl show at the time of benchmark
> > > >>
> > > >> system at xenbr0:
> > > >> lookups: hit:55391 missed:966296 lost:0
> > > >> flows: 0
> > > >>  port 0: xenbr0 (internal)
> > > >> port 3: vif2.1
> > > >>  port 4: vif1.1
> > > >>
> > > >> Do i need to make any changes in ovs-controller.
> > > >>
> > > >> Thanks,
> > > >> Kevin.
> > > >>
> > > >>
> > > >> On Wed, Jun 5, 2013 at 9:56 PM, Ben Pfaff <blp at nicira.com> wrote:
> > > >>
> > > >>> On Wed, Jun 05, 2013 at 07:11:44PM +0530, kevin parker wrote:
> > > >>> > Hi,
> > > >>> >
> > > >>> >      i have  ovs-controller with default setting  (ovs-controller
> > -v
> > > >>> > ptcp:6633).
> > > >>> >
> > > >>> >
> > > >>> > on xenserver host with ovs
> > > >>> >
> > > >>> > *ovs-vsctl get-fail-mode xenbr0*
> > > >>> > *secure*
> > > >>> >
> > > >>> > I set it to secure mode to test that host should not use vswitchd
> > for
> > > >>> flows
> > > >>> > and forward it to controller for generating flow .*
> > > >>> > *
> > > >>> >
> > > >>> > *ovs-vsctl get-controller xenbr0*
> > > >>> > *tcp:10.10.10.183:6633*
> > > >>> > *
> > > >>> > *
> > > >>> > * ovs-dpctl show
> > > >>> > *
> > > >>> > *
> > > >>> > hit:8560336 missed:1060122 lost:0
> > > >>> > flows: 81
> > > >>> > *
> > > >>> >
> > > >>> > where xenbr0 is an isolated bridge with no connection to host
> > > >>> interfaces.
> > > >>> > No other bridge is connected to this controller.
> > > >>> > When i ping vms on same  host l can see  ovs-vswitchd using 35%
> > CPU.
> > > >>> >
> > > >>> > and ovs-controller almost 11% CPU and some times non responsive ssh
> > > >>> session
> > > >>> > on hosts.
> > > >>>
> > > >>> What kind of trafffic do you have in your network?
> > > >>>
> > > >>
> > > >>
> > > >
> >



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