> On 5 Apr 2019, at 08:31, Abeeha Aqeel <abeeha.aq...@xflowresearch.com> wrote: > > Can you please suggest what other lighter ways can be used to deal with a > large number of sessions ? > > Currently, I’ve changed the vlib_error_t to use 14 bits for node. That gives > me 1<<14 node indices and roughly 7000-8000 interfaces. To further increase > the number of sessions is it suitable to use 16 bits for node giving > approximately 30,000 interfaces? Will this effect any other critical > functionality?
That code is simply wrong, and it needs to be rewritten…. > > > From: Damjan Marion via Lists.Fd.Io <mailto:dmarion=me....@lists.fd.io> > Sent: Monday, February 4, 2019 12:43 PM > To: Abeeha Aqeel <mailto:abeeha.aq...@xflowresearch.com> > Cc: vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> > Subject: Re: [vpp-dev] VPP register node change upper limit > > > It is a bit of shame that that plugin doesn’t scale. Somebody will need to > rewrite that plugin to make it right, i.e simple use of sub-interfaces will > likely make this limitation to dissapear... > > — > Damjan > > On Feb 4, 2019, at 5:56 AM, Abeeha Aqeel <abeeha.aq...@xflowresearch.com > <mailto:abeeha.aq...@xflowresearch.com>> wrote: > > > I am using the vpp pppoe plugin and that’s how its working. I do see an > option in the vnet/interface.c to create interfaces that do not need TX > nodes, but I am not sure how to use that. > > Also I can not figure out where the nodes created along with the pppoe > sessions are being used as they do not show up in the “show runtime” or the > trace of packets. > > Regards, > > Abeeha > > From: Abeeha Aqeel <mailto:abeeha.aq...@xflowresearch.com> > Sent: Friday, February 1, 2019 5:36 PM > Cc: vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> > Subject: FW: [vpp-dev] VPP register node change upper limit > > > > > From: Abeeha Aqeel <mailto:abeeha.aq...@xflowresearch.com> > Sent: Friday, February 1, 2019 5:32 PM > To: dmar...@me.com <mailto:dmar...@me.com> > Subject: RE: [vpp-dev] VPP register node change upper limit > > I am using the vpp pppoe plugin and that’s how its working. I do see an > option in the vnet/interface.c to create interfaces that do not need TX > nodes, but I am not sure how to use that. > > Also I can not figure out where the nodes created along with the pppoe > sessions are being used as they do not show up in the “show runtime” or the > trace of packets. > > > > From: Damjan Marion via Lists.Fd.Io <mailto:dmarion=me....@lists.fd.io> > Sent: Friday, February 1, 2019 5:23 PM > To: Abeeha Aqeel <mailto:abeeha.aq...@xflowresearch.com> > Cc: vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> > Subject: Re: [vpp-dev] VPP register node change upper limit > > > > > On 1 Feb 2019, at 11:32, Abeeha Aqeel <abeeha.aq...@xflowresearch.com > <mailto:abeeha.aq...@xflowresearch.com>> wrote: > > Dear All, > > I am trying to create 64k PPPoE sessions with VPP but VPP crashes after > creating 216 sessions each time. From the system logs it seems that it > crashes while trying to register a node and that node’s index is greater than > the limit (1024). (attached screenshot of the trace) > > From the “show vlib graph”, I can see that two new nodes are registered for > each session i.e. pppoe_session0-tx and pppoe_session0-output. > > Can someone guide me to how to increase the upper limit on the number of > nodes? > > Currently number of nodes is limited by buffer metadata space, and the way > how we calculate node errors (vlib_error_t). > Currently vlib_error_t is u16, and 10 bits are used for node. That gives you > 1 << 10 of node indices, so roughly > 300-400 interfaces (2 nodes per interface + other registered nodes < 1024). > > This is something we can improve, but the real question is, do you really > want to go that way. > Have you considered using some more lighter way to deal with large number of > sessions... > > -- > Damjan
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