Tuesday, 2017-03-14

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openstackgerritOleg Basov proposed openstack/performance-docs master: Influx HA as an external storage for Prometheus  https://review.openstack.org/44202011:10
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openstackgerritOleg Basov proposed openstack/performance-docs master: Influx HA as an external storage for Prometheus  https://review.openstack.org/44202011:34
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DinaBelova#startmeeting Performance Team15:30
openstackMeeting started Tue Mar 14 15:30:03 2017 UTC and is due to finish in 60 minutes.  The chair is DinaBelova. Information about MeetBot at http://wiki.debian.org/MeetBot.15:30
openstackUseful Commands: #action #agreed #help #info #idea #link #topic #startvote.15:30
openstackThe meeting name has been set to 'performance_team'15:30
tovin07_hi o/15:30
DinaBelovahello folks!15:30
ronanao/15:30
DinaBelovalet's wait for a few moments :)15:30
DinaBelovaronana tovin07_ o/15:30
DinaBelovaronana new faces :)15:30
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rcherrueau:)15:30
DinaBelovarcherrueau heh :)15:30
DinaBelovanon new :D15:30
DinaBelovaakrzos o/15:31
DinaBelovaok, so let's get started15:33
DinaBelova#topic Action Items15:33
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DinaBelovathe only action item we had was on myself regarding asking Vipin about his future participance in OSprofiler15:33
DinaBelovasadly I had really hard weeks, so I did not manage to do this15:33
DinaBelova#action DinaBelova ping Vipin on his participance in OSprofiler - he seemed not to be really active last few weeks, need to check if he's going to continue work15:34
DinaBelovaI'll keep this till next week15:34
DinaBelovaso we can jump to the current progress15:34
DinaBelova#topic Current progress on the planned tests15:34
DinaBelovarcherrueau ?15:34
tovin07_DinaBelova: :D15:34
rcherrueauNothing really new on our side15:34
DinaBelovarcherrueau ok :) just usual work and smooth progress I guess15:35
tovin07_last week, I had some disscusions with rcherrueau about kolla15:35
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rcherrueauWe started some test in a WAN environment15:35
akrzosDinaBelova:  o/15:35
DinaBelovatovin07_ indeed. rcherrueau afair tovin07_ has proposed to push BP to kolla regarding osprofiler support15:36
rcherrueauthere is a WAN connection between keystone and an OpenStack15:36
DinaBelovarcherrueau ok, so we should expect some results soon :)15:36
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rcherrueauyes15:37
msimoninall o/15:37
DinaBelovarcherrueau ok, thank you. What's about pushing new Bp to kolla about osprofiler support?15:37
DinaBelovamsimonin o/15:37
rcherrueauhey msimonin, can you give some info about the WAN experiment?15:37
rcherrueausuch as the latency15:38
msimoninsure15:38
msimoninFirst of all did you know that the summit talk is accepted ?15:38
DinaBelovarcherrueau msimonin btw congrats on your presentation choosing for the summit15:38
DinaBelovaahaha15:38
msimoninheh :)15:38
DinaBelovaI'm just in time with my congrats15:38
rcherrueauDinaBelova: thx15:38
DinaBelova#link https://www.openstack.org/summit/boston-2017/summit-schedule/events/17952/toward-fog-edge-and-nfv-deployments-evaluating-openstack-wanwide?BackURL=https%3A%2F%2Fwww.openstack.org%2Fsummit%2Fboston-2017%2Fsummit-schedule%2Fspeakers%2F11238%23eventId%3D1795215:38
msimoninI guess the talk will be on the methodology we use and some results15:39
tovin07_congrats rcherrueau15:40
DinaBelovamsimonin any details on the experiment for now?15:40
rcherrueautovin07_: thx15:40
DinaBelovaor do you think some more time is needed for the sharing?15:40
msimoninabout the experiments we are using  some of the rally  scenarios with various latency/bandwidth constraints15:41
msimoninand actually15:41
DinaBelovamsimonin yes sir?15:42
msimoninthe granularity of the results (I mean the timing of the steps) is to big15:42
msimoninso we'll use osprofiler + rally to get more fine grained results15:42
DinaBelovamsimonin gotcha15:43
DinaBelovamsimonin ack, so I think we need to wait for some results :) hope to see them soon :)15:43
msimoninand extract what operations/functions suffer of high latency15:43
rcherrueauDinaBelova: on that point of osprofiler + rally, some students here change the rally client to an `--os-profile YOUR_KEY`15:43
rcherrueauDinaBelova: to add*15:44
rcherrueauso now we can trace a specific scenario :)15:44
tovin07_if you use openstackclient, —os-profile is the option15:44
tovin07_`—os-profile`15:44
msimoninI think they changed in the rally code directly15:44
DinaBelovamsimonin I believe you're right15:45
rcherrueautovin07_: this an implementation of the `--os-profile` into the rally client15:45
tovin07_oh15:45
tovin07_got it15:45
DinaBelovarcherrueau I believe not only to the client, but to the rally itself as well :)15:45
tovin07_it’s strange with other projects15:45
DinaBelovato pass the header further15:45
DinaBelovarcherrueau msimonin anyway, it's a good activity15:46
DinaBelovathanks for the news15:46
rcherrueauDinaBelova: in fact, the change is really small and located into the cli part15:46
DinaBelova#info work on adding osprofiler support to rally has been started by students in Inria to trace specific scenario15:46
msimoninCould it be interesting to push this change to rally ?15:46
DinaBelovamsimonin I believe yes, but we need to ping Andrey Kurilin (Rally PTL)15:47
DinaBelovamsimonin can you please do this?15:47
rcherrueautovin07_: yes you are right, we did it like that because it suited our needs, but I'm not sure this makes sens for a PR for instance15:47
msimoninsure15:47
msimoninI can take the action15:47
tovin07_yup15:47
DinaBelova#action msimonin ping Rally PTL regarding adding osprofiler support to rally code base15:47
DinaBelovamsimonin thank you sir15:48
msimoninDinaBelova: ack :)15:48
DinaBelovamsimonin rcherrueau anything else to share today?15:48
msimoninmaybe one15:48
rcherrueauDinaBelova: just to be clear, the idea is to trace OS based on a scenario executed by, not rally itself15:48
DinaBelovarcherrueau sure, I meant this :)15:49
msimoninwe'll add the support for a new provider to Enos : chameleon cloud15:49
DinaBelovarcherrueau "osprofiler support" sounds confusing, I agree15:49
DinaBelova:D15:49
msimoninhttps://www.chameleoncloud.org/15:49
tovin07_yes, too confusing :v15:49
DinaBelovamsimonin ack, so your tool is covering more and more :)15:50
msimonin:)15:50
msimoninI guess that's all15:51
DinaBelovaok, akrzos any news?15:51
DinaBelovabtw several talks by RedHat is accepted as well if i'm not mistaken15:51
akrzosSo Ceilometer Collector appears to be my biggest bottleneck15:51
akrzosYes15:51
DinaBelova#link https://www.openstack.org/summit/boston-2017/summit-schedule/events/17530/openstack-telemetry-and-the-10000-instances15:51
akrzosAlso one lightening talk for browbeat15:52
DinaBelova#link https://www.openstack.org/summit/boston-2017/summit-schedule/events/18245/performance-and-scale-analysis-of-openstack-using-browbeat?BackURL=https%3A%2F%2Fwww.openstack.org%2Fsummit%2Fboston-2017%2Fsummit-schedule%2Fspeakers%2F9457%23eventId%3D1824515:52
DinaBelovayeah, posted it as well15:52
DinaBelovaakrzos I did not go through most recent Ceilo architecture, but that has been an issue since Kilo at least15:53
akrzosI added a collectd plugin for rabbitmq monitoring since ceilometer collector appears to be choking on how many messages it is trying to consume and push into Gnocchi backlog15:53
akrzosalso Gnocchi is not behaving well with Ceph15:53
akrzosif it's not configured it will create many small objects15:53
akrzos(16 byte objects)15:53
DinaBelovaakrzos so some recommendations are needed on how to tune Ceph, indeed15:53
akrzosand can push other more important data out of caches because it can create so many15:53
akrzosSo still on the battle to get more instances, but we can pretty much blame the collector whcih should be gone by Pike15:54
akrzosAlso later this week I intend on pushing my rally code into a review15:54
akrzosthats it for me15:54
DinaBelovaakrzos the issue with collector / rabbit looks like the issues we've observed with classical Ceilometer some time ago... I remember issue like "collector is slowly taking messages from rabbitmq (as the speed depends on writing speed to the backend, and it may be slow), therefore queue size is constantly growing and at some point rabbitmq crashes"15:55
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akrzosso the collector will grab too much off all at once15:56
akrzosif the prefetch is not limited15:56
DinaBelovayeah15:56
akrzosso if you limit prefetch you can prevent that15:56
akrzosbut that doesn't stop it from being too slow15:56
DinaBelovaindeed15:56
akrzosthere is some settings surrounding the thread count and worker count15:56
akrzoswhich could use a bit more playing with to see if it improves much15:57
DinaBelovaakrzos thanks for your update15:57
DinaBelovafrom Mirantis side: we're currently stressing k8s API and ETCD with huge number of pods (on 450 nodes). At the same time we're trying to evaluate k8s benefits from LCM point of view - we've started working on upgrades testing of containerized OpenStack environment15:58
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DinaBelovasadly progress is slow due to several issues with the lab itself from hw perspective and from deployment perspective as well15:58
DinaBelovaso nothing to share so far15:58
DinaBelovait looks like we're done with the progress update15:59
DinaBelovaso I believe we may jump to the open discussion15:59
DinaBelova#topic Open Discussion15:59
tovin07_from me15:59
tovin07_continue to work on these patches15:59
tovin07_#link OSprofiler in Ironic https://review.openstack.org/#/c/358142/16:00
tovin07_#link OSprofiler in Murano https://blueprints.launchpad.net/murano/+spec/osprofiler-support-in-murano16:00
tovin07_#link review OSprofiler in Zun https://review.openstack.org/#/c/444776/16:00
DinaBelova#info also I propose to add tovin07_ to OSprofiler core team16:00
DinaBelovatovin07_ ^^16:00
DinaBelovaI'll discuss this with Vipin, but I think he'll be really glad16:00
tovin07_patches in Murano will be push this week16:00
tovin07_DinaBelova:16:00
tovin07_DinaBelova: thanks :D16:00
DinaBelovatovin07_ good to know!16:00
tovin07_i think that I’m ready for that16:01
DinaBelova:D you should yeah :D16:01
tovin07_hope to see it soon16:01
tovin07_:D16:01
DinaBelovatovin07_ ;)16:01
tovin07_besides, just realize that we bump version of OSprofiler recently (current 1.7.0)16:01
DinaBelovatovin07_ yeah, so it includes all nice things that were done about new drivers, etc.16:02
DinaBelovaand some of your improvements as well16:02
tovin07_yes16:02
DinaBelovatovin07_ anything else to share today?16:03
tovin07_oh16:03
DinaBelovatovin07_ it might be not, do not worry :)16:03
tovin07_Boris said that he came back16:03
tovin07_however, I did not see him around16:04
tovin07_:D16:04
rcherrueautovin07_:, DinaBelova: I have a question about osprofiler, can I?16:04
tovin07_yes sir16:05
DinaBelovatovin07_ yeah, but upcoming summit rally update will be processed by him and Andrey together16:05
DinaBelova#link https://www.openstack.org/summit/boston-2017/summit-schedule/events/18612/project-update-rally?BackURL=https%3A%2F%2Fwww.openstack.org%2Fsummit%2Fboston-2017%2Fsummit-schedule%2Fglobal-search%3Ft%3Dpavlovic%23eventId%3D1861216:05
DinaBelovarcherrueau sure :)16:05
rcherrueautovin07_: In the *-stop part of a trace, is it possible to get the result of the function or sql evaluation?16:05
tovin07_DinaBelova: yes, I see :D16:05
DinaBelovarcherrueau hm, I believe it's possible, but it will require addtional developer work in osprofiler16:06
tovin07_rcherrueau: I think yes16:06
DinaBelovarcherrueau right now it's not possible16:06
DinaBelovatovin07_ can you please evaluate this work? what needs to be done?16:07
tovin07_however, current implementation mainly focus on request parameters and arguments (and kwargs)16:07
tovin07_DinaBelova: sure16:07
DinaBelova#action tovin07_ evaluate what needs to be done to add result of the function or sql evaluation in the *-stop part of osprofiler trace16:07
rcherrueautovin07_: yes you are right, but during debug it could be helpful to get the result also16:07
DinaBelovarcherrueau yeah, it's good use case16:07
DinaBelovathanks for sharing16:08
tovin07_rcherrueau: yes16:08
tovin07_thanks16:08
DinaBelovalet's try to get some answer next week16:08
tovin07_(y)16:08
rcherrueaugreat16:08
DinaBelovamsimonin akrzos anything else to share?16:08
akrzosi'm good16:09
DinaBelovaok, so thanks everyone for participating and see you next week!16:09
DinaBelova#endmeeting16:09
openstackMeeting ended Tue Mar 14 16:09:37 2017 UTC.  Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)16:09
openstackMinutes:        http://eavesdrop.openstack.org/meetings/performance_team/2017/performance_team.2017-03-14-15.30.html16:09
openstackMinutes (text): http://eavesdrop.openstack.org/meetings/performance_team/2017/performance_team.2017-03-14-15.30.txt16:09
openstackLog:            http://eavesdrop.openstack.org/meetings/performance_team/2017/performance_team.2017-03-14-15.30.log.html16:09
tovin07_bye16:09
tovin07_have a nice week :D16:09
rcherrueaubye16:09
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