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| mlavalle | #startmeeting neutron_performance | 16:00 |
|---|---|---|
| openstack | Meeting started Mon Jun 3 16:00:08 2019 UTC and is due to finish in 60 minutes. The chair is mlavalle. Information about MeetBot at http://wiki.debian.org/MeetBot. | 16:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 16:00 |
| *** openstack changes topic to " (Meeting topic: neutron_performance)" | 16:00 | |
| openstack | The meeting name has been set to 'neutron_performance' | 16:00 |
| *** ttsiouts has joined #openstack-meeting | 16:00 | |
| rubasov | hello | 16:00 |
| haleyb | hi | 16:00 |
| jrbalderrama | hi | 16:01 |
| mlavalle | I know slaweq and bcafarel won't attend today's meeting | 16:01 |
| *** belmoreira has quit IRC | 16:01 | |
| mlavalle | so I think we can get going | 16:02 |
| njohnston | o/ | 16:02 |
| mlavalle | there he is | 16:03 |
| mlavalle | #topic Updates | 16:03 |
| *** openstack changes topic to "Updates (Meeting topic: neutron_performance)" | 16:03 | |
| mlavalle | rubasov: do you have an update for today? | 16:03 |
| rubasov | mlavalle: yes | 16:03 |
| rubasov | just an hour ago I uploaded the rally scenario for port binding I promised | 16:04 |
| rubasov | here's the topic | 16:04 |
| rubasov | https://review.opendev.org/#/q/topic:rally-bind | 16:04 |
| rubasov | the main stuff is in the rally-openstack change | 16:04 |
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| rubasov | when you review it please consider if it's realistic enough for our goals | 16:05 |
| rubasov | that's about it | 16:05 |
| mlavalle | at first glance, this looks good | 16:06 |
| njohnston | Yeah, I have only had a chance for a quick look but it seems sound out of the gate | 16:07 |
| rubasov | just leave me comments there if you think anything else should be included | 16:08 |
| mlavalle | and the good news is that each one of the operations you are calling in https://review.opendev.org/#/c/662781/1/rally_openstack/scenarios/neutron/network.py is "atomic" | 16:08 |
| mlavalle | so we will be able to see them in the rally report | 16:09 |
| rubasov | yep they are all measured one by one | 16:09 |
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| mlavalle | because the alternative is to create VMs | 16:10 |
| mlavalle | but in that case we loose the ability to measure our primitive operations individually | 16:10 |
| mlavalle | the downside is that we are not measuring the "wiring" of the vifs in the agent | 16:11 |
| rubasov | yeah that's quite different from port binding | 16:11 |
| rubasov | may be interesting in itself though | 16:12 |
| mlavalle | yeah, we also need to capture that | 16:12 |
| mlavalle | somehow | 16:12 |
| rubasov | I guess what we need is what happens after port plug in neutron, right? | 16:12 |
| mlavalle | right | 16:13 |
| rubasov | unfortunately that's not exposed on the api, so rally may not be the right tool for it | 16:13 |
| rubasov | actually I do not really know what would be the right tool for it | 16:13 |
| mlavalle | correct, what rally can measure is rest api operations | 16:13 |
| mlavalle | but maybe that part of the circuit we can capture with osprofiler | 16:14 |
| mlavalle | if we had a scenario that spins instances | 16:14 |
| rubasov | we can measure a full vm boot and look at the osprofiler output | 16:15 |
| mlavalle | correct | 16:15 |
| rubasov | I can add another scenario for that | 16:15 |
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| mlavalle | I still think that the scenario you propossed today is very valuable | 16:15 |
| mlavalle | because it allows us to isolate that part of the circuit | 16:15 |
| rubasov | this will be much easier to interpret | 16:16 |
| rubasov | but it's not the full thing | 16:16 |
| mlavalle | but we also need to capture the agent side | 16:16 |
| mlavalle | we could just re-use one of the nova scnarios that already exist in rally-openstack | 16:16 |
| mlavalle | just add it to our rally job | 16:16 |
| rubasov | yep likeley it's already around somewhere | 16:17 |
| rubasov | I'll look around | 16:17 |
| mlavalle | rubasov: https://opendev.org/openstack/rally-openstack/src/branch/master/rally_openstack/scenarios/nova | 16:18 |
| mlavalle | and https://opendev.org/openstack/rally-openstack/src/branch/master/rally-jobs/nova.yaml | 16:18 |
| rubasov | yep this sounds just the one we may need: NovaServers.boot_server_and_list_interfaces | 16:20 |
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| mlavalle | yes | 16:21 |
| mlavalle | we are only interested on the boot_server half | 16:21 |
| mlavalle | and what osprofiler can tell us about it | 16:21 |
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| mlavalle | anything else rubasov today? | 16:22 |
| rubasov | that's all from me | 16:22 |
| mlavalle | great job! thanks very much! | 16:22 |
| rubasov | never mind | 16:23 |
| mlavalle | so on my side and made progress with the EnOS deployment in my big PC | 16:23 |
| mlavalle | at this point, I am deploying i control node, 1 network and 10 computes | 16:24 |
| mlavalle | and I have about 55% memory utilization | 16:24 |
| mlavalle | so I feel confident that I can scale this up with the memory I have (64GB) to about 20 computes | 16:25 |
| mlavalle | and I can add another 64GB of memory, so probably I can get up to 50 or 60 computes | 16:25 |
| mlavalle | but before adding more memory, I want to stress this config | 16:26 |
| mlavalle | I want to make sure the CPU is not the limiting resource | 16:26 |
| mlavalle | wich doesn't seem to be | 16:26 |
| mlavalle | with 32 threads, CPU utilization is very low | 16:26 |
| mlavalle | My next steps are to max out the current memory with 20 computes | 16:27 |
| mlavalle | and then start runing the scanrio that rubasov just proposed | 16:27 |
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| mlavalle | so I have several questions for jrbalderrama | 16:28 |
| jrbalderrama | Of course, I'll try my best, msimonin (the maintainer is out of office today) | 16:29 |
| mlavalle | 1) Does enos install rally and rally-openstack from stable branch (stein)? | 16:29 |
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| jrbalderrama | 1. by default all is taken from a stable branch, alternatively you can define the repo path and branch | 16:31 |
| mlavalle | the question is relevant because I want to test with rubasov's patch | 16:31 |
| mlavalle | maybe just let enos install from branch | 16:32 |
| mlavalle | and take the relevant files from rubasov's patch and put them on the installed rally-openstack | 16:32 |
| mlavalle | ? | 16:32 |
| mlavalle | I will try that and let you know how it goes | 16:33 |
| jrbalderrama | That is possible, actually in the past we had some configs with some local patches applied after install | 16:33 |
| mlavalle | ok | 16:33 |
| mlavalle | 2) I had trouble again booting up instances: http://paste.openstack.org/show/752412/ | 16:34 |
| mlavalle | please see lines 3 to 6 | 16:34 |
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| mlavalle | I used the the images that enos gave me, cirros-uec and debian-19 | 16:35 |
| mlavalle | I mean, debian-9 | 16:35 |
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| jrbalderrama | It is strange. I cannot answer that right now. If we have access to your configuration file we can try to reproduce the behaviour here an let you know | 16:36 |
| mlavalle | but still, as you can see in the nova scheduler log lines, the ImagePropertiesFilter doesn't find compytes | 16:37 |
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| mlavalle | you mean reservation.yaml | 16:37 |
| mlavalle | ? | 16:37 |
| jrbalderrama | yes | 16:38 |
| mlavalle | ok, I'll email to you as soon as the meeting is over | 16:38 |
| jrbalderrama | OK thanks | 16:39 |
| mlavalle | 3) I came across this paper https://hal.inria.fr/hal-01415522v2/document, that some members of your team wrote. If you look at page 12, the last paragraph on the left column states that "We use the “fake driver” capability of Nova to deploy 50 nova-compute containers | 16:41 |
| mlavalle | per physical node, thus allowing to reach 1,000 fake | 16:41 |
| mlavalle | compute-nodes with 20 physical m | 16:41 |
| mlavalle | achines" | 16:41 |
| jrbalderrama | FYI I just checked the test environment with stein I have installed on my PC and I got public and private subnets. | 16:41 |
| mlavalle | so if I can deploy 20 computes in my bug pc, and configure the nova fake driver, I could achieve a 1000 scale test according to the paper | 16:43 |
| mlavalle | right? | 16:43 |
| jrbalderrama | The paper you mention probably is related to the presentation at the summit: https://www.openstack.org/summit/barcelona-2016/summit-schedule/events/15977/chasing-1000-nodes-scale | 16:44 |
| mlavalle | yes | 16:44 |
| mlavalle | my conclusion is that there wasn't a test with 1000 real nodes | 16:44 |
| mlavalle | they were simulated with the nova fake driver, right? | 16:44 |
| jrbalderrama | You are right those are not real. I can double check with msimonin about it to confirm. It is one of the authors, however lately we were working with VMs to deploy nodes scaling hundreds | 16:45 |
| mlavalle | so my complete question would be how do I configure that fake driver in my deployment | 16:46 |
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| mlavalle | from our point of view (Neutron) the fakedriver is not going to be good enough, because if there are no instances, there are not vifs to be plugged to br-int | 16:47 |
| jrbalderrama | If I remember right it was more a hack than a deployment so there is no nodes but openstack does not detect. | 16:47 |
| jrbalderrama | indeed for neutron it is not the appropiate way to scale (they have different goals at that time) | 16:48 |
| mlavalle | but if we create another fakedriver that just plugs a vif to br-int for each fake instance, then we can simlulate the entire port creation, binding, wiring circuit | 16:48 |
| jrbalderrama | I guess if we can provide that driver it could work. But again, VMs are not enough ? | 16:50 |
| mlavalle | in that fakedriver we can just create the vifs the same way we create them for the dhcp and L3 agents: https://github.com/openstack/neutron/blob/master/neutron/agent/linux/interface.py#L261 | 16:50 |
| mlavalle | My assumption is that with the fakedriver, you try to avoid the actual creation of VM"s | 16:50 |
| mlavalle | because that allows you to simulate 20 computes per physical machine | 16:51 |
| mlavalle | right? | 16:51 |
| jrbalderrama | Yes that is right | 16:51 |
| mlavalle | otherwise, if you are actually creating VMs, you need real phusical machines | 16:51 |
| mlavalle | rubasov, haleyb, njohnston: does it make sense about using a fake driver that just plugs vifs so we can trigger port wiring? | 16:52 |
| jrbalderrama | exactly, for physical machines situation we use the Grid5000 testbed | 16:52 |
| rubasov | mlavalle: it sounds like it allows us to test vif plugging at a scale we can't reach otherwise, right? | 16:53 |
| mlavalle | rubasov: exactly | 16:53 |
| jrbalderrama | in your case once you validate your test in your machine with couple(s) of nodes we can go next level with Grid5000 | 16:53 |
| njohnston | yes, I agree, I think that exercises the basics of port binding sufficiently | 16:54 |
| mlavalle | ok, I just wanted to share my thoughts. Let's explore them further | 16:54 |
| jrbalderrama | sure | 16:55 |
| mlavalle | in the mean time, jrbalderrama if I can get some guidance as to how the fakedriver was configured in an EnOS deployment, it would be great | 16:55 |
| mlavalle | 4) Last question: how do I add osprofiler to my deployment? | 16:56 |
| jrbalderrama | I will come to you once I got more elements about it | 16:56 |
| mlavalle | I found this: https://github.com/BeyondTheClouds/enos-scenarios/tree/master/osprofiler | 16:56 |
| mlavalle | but doesn't seem complete and rcent enough. Could I get some guidance over email on how to do it? | 16:57 |
| jrbalderrama | 4. We did some progress on that at some point but we never release that because we never used | 16:57 |
| mlavalle | I don't mind hacking a bit | 16:57 |
| mlavalle | If I can just get some guidance, it would be great | 16:58 |
| jrbalderrama | No problem. We can work together on that | 16:58 |
| mlavalle | cool | 16:58 |
| mlavalle | That's all I have for today | 16:58 |
| mlavalle | anything else we should discuss today? | 16:58 |
| rubasov | I added one more change to the topic I mentioned | 16:59 |
| mlavalle | rubasov: Great! | 16:59 |
| rubasov | I hope it enables the nova boot vm scenario in our gate | 16:59 |
| mlavalle | Thanks for the quick turnaround :-) | 16:59 |
| rubasov | :-) | 16:59 |
| mlavalle | ok guys, have a great week! | 16:59 |
| mlavalle | thanks for attending! | 16:59 |
| rubasov | let's see if the zuul results also say I added it :-) | 16:59 |
| mlavalle | #endmeeting | 17:00 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 17:00 | |
| openstack | Meeting ended Mon Jun 3 17:00:06 2019 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 17:00 |
| jrbalderrama | Thank you bye! | 17:00 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/neutron_performance/2019/neutron_performance.2019-06-03-16.00.html | 17:00 |
| rubasov | thanks | 17:00 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/neutron_performance/2019/neutron_performance.2019-06-03-16.00.txt | 17:00 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/neutron_performance/2019/neutron_performance.2019-06-03-16.00.log.html | 17:00 |
| rubasov | bye | 17:00 |
| njohnston | \o | 17:00 |
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