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

Ben Pfaff blp at nicira.com
Fri Jun 7 14:52:17 UTC 2013


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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