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#openstack-nova - 2021-05-21
10:20:51 sean-k-mooney :)
10:20:51 bauzas ok, so, back to the pps spec
10:20:51 bauzas ok, so, back to the pps spec
10:21:03 sean-k-mooney brb continue and ill catch up
10:21:03 sean-k-mooney brb continue and ill catch up
10:21:28 bauzas here, we want to guarantee the process rate of the internal ovs switch that's on... br-int ?
10:21:28 bauzas here, we want to guarantee the process rate of the internal ovs switch that's on... br-int ?
10:21:38 gibi * gibi free until the top of the hour, then need to jump to two consecutive calls 
10:21:56 bauzas * bauzas had to skip his usual Friday gym session :p
10:25:29 gibi in theory I we can rename the OVS Agent RP to br-int. It would help with some mental modelling. But this can be done any time independently of my work. So I would like to push this work to be a burden of the person who proposes the multiple OVS per agent spec. You can hate me for it, but I don't believe we ever get there. So I spare some effort not to do someting that will not be needed.
10:25:29 gibi in theory I we can rename the OVS Agent RP to br-int. It would help with some mental modelling. But this can be done any time independently of my work. So I would like to push this work to be a burden of the person who proposes the multiple OVS per agent spec. You can hate me for it, but I don't believe we ever get there. So I spare some effort not to do someting that will not be needed.
10:26:10 gibi I will documet the renameing idea in the spec
10:26:10 gibi I will documet the renameing idea in the spec
10:27:49 bauzas gibi: honestly, I feel we can just leave as it is, after 1 hour of brainstorming
10:27:49 bauzas gibi: honestly, I feel we can just leave as it is, after 1 hour of brainstorming
10:28:21 gibi I feel the same. but I think we gained some insights during that hour
10:28:21 gibi I feel the same. but I think we gained some insights during that hour
10:28:29 bauzas the main difference between pps and bw features is that one cares about inter-host communication while the other cares about the agent itself
10:28:29 bauzas the main difference between pps and bw features is that one cares about inter-host communication while the other cares about the agent itself
10:29:08 gibi bauzas: this is coming from the fact that the bottlenecks are in different places regarding bw or pps
10:29:08 gibi bauzas: this is coming from the fact that the bottlenecks are in different places regarding bw or pps
10:29:19 bauzas yup, that's what I figured
10:29:19 bauzas yup, that's what I figured
10:29:29 sean-k-mooney bauzas: kind of yes. one is inter host and the other is any traffic that passes though ovs bot inter and intra host traffic
10:29:29 sean-k-mooney bauzas: kind of yes. one is inter host and the other is any traffic that passes though ovs bot inter and intra host traffic
10:29:32 bauzas ok, I'll reply to the spec
10:29:32 bauzas ok, I'll reply to the spec
10:29:40 gibi bauzas: thank you
10:29:40 gibi bauzas: thank you
10:29:41 gibi sean-k-mooney: thank you
10:29:42 gibi sean-k-mooney: thank you
10:30:00 gibi I appreciate your time spent on these topics
10:30:00 gibi I appreciate your time spent on these topics
10:30:05 bauzas by saying that for the good or bad, we've already created a beast called "the agent"
10:30:06 bauzas by saying that for the good or bad, we've already created a beast called "the agent"
10:30:23 bauzas which is actually something between br-int and other things
10:30:23 bauzas which is actually something between br-int and other things
10:30:48 bauzas by adding resources to this "beast", we're making it clear this is the *switch*
10:30:48 bauzas by adding resources to this "beast", we're making it clear this is the *switch*
10:30:54 sean-k-mooney yes like the compute node it currenlty modesl multiple things
10:30:54 sean-k-mooney yes like the compute node it currenlty modesl multiple things
10:31:28 bauzas if someone pops up with wanting to monitor the number of ports per agent, we could then say "mmmm, maybe create a parent RP"
10:31:28 bauzas if someone pops up with wanting to monitor the number of ports per agent, we could then say "mmmm, maybe create a parent RP"
10:31:39 bauzas but this is unfair to ask gibi to pay the price now
10:31:39 bauzas but this is unfair to ask gibi to pay the price now
10:31:54 sean-k-mooney or just add it to the beast
10:31:54 sean-k-mooney or just add it to the beast
10:32:01 bauzas we just internally defined this as an agent, but this is untrue
10:32:01 bauzas we just internally defined this as an agent, but this is untrue
10:32:39 bauzas sean-k-mooney: yup, another spec, another day of discussions
10:32:39 bauzas sean-k-mooney: yup, another spec, another day of discussions
10:32:43 sean-k-mooney we shoudl add in scare quotes "the beast" beside all mentions of the agent rp and just not say why
10:32:43 sean-k-mooney we shoudl add in scare quotes "the beast" beside all mentions of the agent rp and just not say why
10:32:47 gibi until the agent and the switch has 1:1 relationship you can attach resources to the RP for both reasons
10:32:47 gibi until the agent and the switch has 1:1 relationship you can attach resources to the RP for both reasons
10:33:11 gibi it is a beast
10:33:11 gibi it is a beast
10:33:22 gibi but we are taming it with our 1:1 assumption
10:33:22 gibi but we are taming it with our 1:1 assumption
10:33:50 sean-k-mooney yes im tryiing to avoid discussign the added complxity hardware offload adds
10:33:50 sean-k-mooney yes im tryiing to avoid discussign the added complxity hardware offload adds
10:34:06 sean-k-mooney we have adress that via the different resouce classes however
10:34:06 sean-k-mooney we have adress that via the different resouce classes however
10:34:32 gibi which might be a compromise but as far as I see it is an acceptable one
10:34:32 gibi which might be a compromise but as far as I see it is an acceptable one
10:34:38 bauzas technically we created a beast in nova too
10:34:38 bauzas technically we created a beast in nova too
10:34:47 bauzas it is called a "compute RP"
10:34:47 bauzas it is called a "compute RP"
10:34:56 gibi sure it modells mutliple thing
10:34:56 gibi sure it modells mutliple thing
10:35:01 sean-k-mooney yes but its a natural starting point
10:35:01 sean-k-mooney yes but its a natural starting point
10:35:04 gibi :)
10:35:14 bauzas ok, I don't wanna hold us so long
10:35:14 bauzas ok, I don't wanna hold us so long
10:35:15 sean-k-mooney untill you need to decompose it it all in one RP
10:35:15 sean-k-mooney untill you need to decompose it it all in one RP
10:35:34 bauzas I'll just comment the spec and mention this very worthy eavesdrop
10:35:34 bauzas I'll just comment the spec and mention this very worthy eavesdrop
10:36:06 ignaziocassano hello, seems patches for bug 1815989 are for python3. I am using centos 7 train :-(
10:36:08 ignaziocassano hello, seems patches for bug 1815989 are for python3. I am using centos 7 train :-(
10:36:08 openstack bug 1815989 in neutron ussuri "OVS drops RARP packets by QEMU upon live-migration causes up to 40s ping pause in Rocky" [Undecided,In progress] https://launchpad.net/bugs/1815989 - Assigned to Rodolfo Alonso (rodolfo-alonso-hernandez)
10:36:09 openstack bug 1815989 in neutron ussuri "OVS drops RARP packets by QEMU upon live-migration causes up to 40s ping pause in Rocky" [Undecided,In progress] https://launchpad.net/bugs/1815989 - Assigned to Rodolfo Alonso (rodolfo-alonso-hernandez)
10:36:14 sean-k-mooney gibi are you happy you have all the answer to your question to proceed with the next version
10:36:14 sean-k-mooney gibi are you happy you have all the answer to your question to proceed with the next version
10:36:38 gibi I have one more open thing
10:36:38 gibi I have one more open thing
10:36:43 sean-k-mooney ignaziocassano: posibly but they shoudl be simple to adapt
10:36:43 sean-k-mooney ignaziocassano: posibly but they shoudl be simple to adapt
10:36:48 gibi do we need a microversion bump in nova for it?
10:36:48 gibi do we need a microversion bump in nova for it?
10:36:52 bauzas ah
10:36:52 bauzas ah
10:37:00 sean-k-mooney gibi: i do not think so
10:37:00 sean-k-mooney gibi: i do not think so
10:37:10 sean-k-mooney gibi: what api has changed
10:37:10 sean-k-mooney gibi: what api has changed
10:37:21 gibi nova adapts to the neutron API change
10:37:21 gibi nova adapts to the neutron API change

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