[ovs-discuss] Too many resubmits in the OVS pipeline for scaled OVN topologies due to multicast_group implementation

2019-10-01 Thread Dumitru Ceara
Hi, We've hit a scaling issue recently [1] in the following topology: - External network connected to public logical switch "LS-pub" - ~300 logical networks (LR-i <--> LS-i <--> VMi) connected to LS-pub with dnat_and_snat rules. While trying to ping the VMs from outside the ARP request packet fr

Re: [ovs-discuss] Too many resubmits in the OVS pipeline for scaled OVN topologies due to multicast_group implementation

2019-10-01 Thread Han Zhou
On Tue, Oct 1, 2019 at 3:34 AM Dumitru Ceara wrote: > > Hi, > > We've hit a scaling issue recently [1] in the following topology: > > - External network connected to public logical switch "LS-pub" > - ~300 logical networks (LR-i <--> LS-i <--> VMi) connected to LS-pub > with dnat_and_snat rules. >

Re: [ovs-discuss] Too many resubmits in the OVS pipeline for scaled OVN topologies due to multicast_group implementation

2019-10-02 Thread Dumitru Ceara
On Tue, Oct 1, 2019 at 8:41 PM Han Zhou wrote: > > > > On Tue, Oct 1, 2019 at 3:34 AM Dumitru Ceara wrote: > > > > Hi, > > > > We've hit a scaling issue recently [1] in the following topology: > > > > - External network connected to public logical switch "LS-pub" > > - ~300 logical networks (LR-i

Re: [ovs-discuss] Too many resubmits in the OVS pipeline for scaled OVN topologies due to multicast_group implementation

2019-10-02 Thread Han Zhou
On Wed, Oct 2, 2019 at 9:11 AM Dumitru Ceara wrote: > > On Tue, Oct 1, 2019 at 8:41 PM Han Zhou wrote: > > > > > > > > On Tue, Oct 1, 2019 at 3:34 AM Dumitru Ceara wrote: > > > > > > Hi, > > > > > > We've hit a scaling issue recently [1] in the following topology: > > > > > > - External network

Re: [ovs-discuss] Too many resubmits in the OVS pipeline for scaled OVN topologies due to multicast_group implementation

2019-10-03 Thread Dumitru Ceara
On Wed, Oct 2, 2019 at 8:46 PM Han Zhou wrote: > > > > On Wed, Oct 2, 2019 at 9:11 AM Dumitru Ceara wrote: > > > > On Tue, Oct 1, 2019 at 8:41 PM Han Zhou wrote: > > > > > > > > > > > > On Tue, Oct 1, 2019 at 3:34 AM Dumitru Ceara wrote: > > > > > > > > Hi, > > > > > > > > We've hit a scaling i

Re: [ovs-discuss] Too many resubmits in the OVS pipeline for scaled OVN topologies due to multicast_group implementation

2019-10-03 Thread Ben Pfaff
On Wed, Oct 02, 2019 at 06:10:54PM +0200, Dumitru Ceara wrote: > I'm afraid that increasing the limit will just postpone the problem > for later. Also I'm worried about the time the packet would spend in > the pipeline and the fact that potentially there will be high jitter > between delivery times