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| Luzi | #startmeeting image_encryption | 13:00 |
|---|---|---|
| openstack | Meeting started Mon Jul 29 13:00:32 2019 UTC and is due to finish in 60 minutes. The chair is Luzi. Information about MeetBot at http://wiki.debian.org/MeetBot. | 13:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 13:00 |
| *** openstack changes topic to " (Meeting topic: image_encryption)" | 13:00 | |
| openstack | The meeting name has been set to 'image_encryption' | 13:00 |
| rosmaita | o/ | 13:00 |
| Luzi | #topic Roll Call | 13:00 |
| *** openstack changes topic to "Roll Call (Meeting topic: image_encryption)" | 13:00 | |
| * fungi waves to all the nice people | 13:00 | |
| Luzi | good morning everyone | 13:01 |
| rosmaita | good morning | 13:01 |
| moguimar | o/ | 13:01 |
| redrobot | \o | 13:04 |
| mhen | o/ | 13:04 |
| Luzi | #topic Barbican Consumer API Update | 13:04 |
| *** openstack changes topic to "Barbican Consumer API Update (Meeting topic: image_encryption)" | 13:04 | |
| efried | o/ | 13:05 |
| moguimar | I have this on my plate to start working tomorrow | 13:05 |
| Luzi | okay, that does sound good :) | 13:05 |
| Luzi | #topic Image Encryption Specs | 13:07 |
| *** openstack changes topic to "Image Encryption Specs (Meeting topic: image_encryption)" | 13:07 | |
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| Luzi | as i thought, we didn't met the spec freeze with all three specs | 13:07 |
| Luzi | now only the cinder one got merged | 13:08 |
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| rosmaita | you may still have time on glance, erno tends to have a late spec freeze | 13:09 |
| fungi | so the nova spec didn't make it for this cycle? | 13:10 |
| Luzi | i'm on the fence, whether it would be good to still land this or maybe it merged at the beginning of the next cycle | 13:10 |
| Luzi | the problem is, that our changes in glance and nova depend on the Barbican secret consumers | 13:11 |
| rosmaita | Luzi: my advice it to land it if possible so that it's out of the way | 13:11 |
| Luzi | rosmaita, okay do you know when the spec freeze is for glance? | 13:11 |
| rosmaita | unless the consumer API is going to change in some major way during implementation | 13:12 |
| rosmaita | Luzi: i do not, but it's definitely before M-3 | 13:12 |
| fungi | is there a feel for how close the nova spec was to being approved before the freeze? | 13:12 |
| Luzi | we got a +2 from efried | 13:12 |
| fungi | still a lot of rewrites requested, or just not enough reviews? | 13:12 |
| efried | I feel like the nova spec was pretty close, but I couldn't seem to rouse enough interest for that second +2 in the end. | 13:13 |
| efried | There's a "spec freeze exception" process which is the obvious next step | 13:13 |
| efried | if all the other stars are aligned and you feel like you still want the nova side in Train. | 13:13 |
| rosmaita | i imagine you'll be in a strong position if the other specs are approved and the consumer API implementation is underway | 13:13 |
| fungi | yeah, i wouldn't want to count this out just yet, if it's a coordinated effort involving entangled specs in three projects and the others merge or look like they're going to for this cycle | 13:13 |
| rosmaita | (basically, what efried said) | 13:13 |
| efried | #link nova spec freeze exception process http://lists.openstack.org/pipermail/openstack-discuss/2019-July/008060.html | 13:13 |
| Luzi | yes it would be good to have all three specs accepted in this cycle | 13:15 |
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| Luzi | efried, I will ask for an sfe after this meeting | 13:15 |
| Luzi | rosmaita, I will also speak to erno about the spec freeze and the spec itself | 13:16 |
| rosmaita | i'm the one holding up the glance spec, let me know if you have any questions about my comments | 13:17 |
| Luzi | I will look into them again :) | 13:18 |
| rosmaita | ok, cool, i will try to respond as quickly as possible | 13:18 |
| Luzi | are there any more questions regarding the specs? | 13:19 |
| efried | Luzi: Note that the next meeting is going to be in the middle of the night for you. | 13:20 |
| Luzi | #topic Open Discussion | 13:20 |
| *** openstack changes topic to "Open Discussion (Meeting topic: image_encryption)" | 13:20 | |
| efried | Do you have a US timezone delegate you can send? | 13:20 |
| efried | Or you can just try to do everything via email. | 13:20 |
| Luzi | efried, no, I don't have.. | 13:20 |
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| efried | Otherwise, the meeting the following week is in a good time for EU | 13:21 |
| Luzi | but I have sleeping problems so I might be awake :D | 13:21 |
| efried | but that's getting pretty far into the cycle. | 13:21 |
| efried | I feel like if we could get johnthetubaguy to have another look, it might go. | 13:21 |
| efried | He wasn't around last week | 13:21 |
| Luzi | efried, that would be nice, 11pm might be late for a work day, but still managable I think | 13:22 |
| Luzi | are there other topics, questions, problems? | 13:23 |
| Luzi | doesn't seem to be the case | 13:26 |
| Luzi | thank you for joining this meeting :) | 13:26 |
| rosmaita | you're welcome! | 13:27 |
| Luzi | #endmeeting image_encryption | 13:27 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 13:27 | |
| openstack | Meeting ended Mon Jul 29 13:27:09 2019 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 13:27 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/image_encryption/2019/image_encryption.2019-07-29-13.00.html | 13:27 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/image_encryption/2019/image_encryption.2019-07-29-13.00.txt | 13:27 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/image_encryption/2019/image_encryption.2019-07-29-13.00.log.html | 13:27 |
| fungi | thanks Luzi! | 13:27 |
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| mlavalle | #startmeeting neutron_performance | 16:00 |
| openstack | Meeting started Mon Jul 29 16:00:51 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 |
| rubasov | hi | 16:01 |
| slaweq | hi | 16:01 |
| haleyb | hi | 16:01 |
| mlavalle | let's wait one minute and we get going | 16:01 |
| mlavalle | well, I see haleyb is already here and I know njohnston won't attend | 16:02 |
| mlavalle | so let's get going | 16:02 |
| mlavalle | #topic Updates | 16:02 |
| *** openstack changes topic to "Updates (Meeting topic: neutron_performance)" | 16:02 | |
| mlavalle | rubasov merged our port binding scenario rally-openstack: https://review.opendev.org/#/c/662781/ | 16:03 |
| mlavalle | I've been playing with it the past few days | 16:03 |
| mlavalle | Thanks and gret job! | 16:03 |
| rubasov | I hope it's being useful | 16:03 |
| mlavalle | it is being useful | 16:04 |
| rubasov | then I'm happy | 16:05 |
| mlavalle | and I have to point out that it is going to be even more useful for https://bugs.launchpad.net/neutron/+bug/1836834 | 16:05 |
| openstack | Launchpad bug 1836834 in neutron "[RFE] introduce distributed locks to ipam" [Wishlist,Confirmed] - Assigned to qinhaizhong (qinhaizhong) | 16:05 |
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| mlavalle | this is RFE that we approved this past Friday. We need a Rally test to check how much progres we make with that RFE | 16:06 |
| mlavalle | and I think your rally test is the perfect match for that | 16:06 |
| mlavalle | what do you think slaweq? | 16:06 |
| slaweq | I agree, with this rally scenario we can exactly measure improvement (or not) which will give us this lock to ipam | 16:07 |
| slaweq | as in other "port_create" scenarios I think it's not allocating IP addresses, right? | 16:07 |
| slaweq | or is it? | 16:07 |
| mlavalle | exactly | 16:07 |
| mlavalle | this is the rally test that allows us to exercise the IPAM | 16:07 |
| mlavalle | so really useful rubasov | 16:08 |
| mlavalle | \o/ | 16:08 |
| slaweq | thx rubasov for this :) | 16:08 |
| rubasov | cool, when I as writing it I was thinking of adding some options to tune the IP contention | 16:08 |
| rubasov | I mean how many IPs out of how large pool | 16:09 |
| rubasov | let me know if that's needed | 16:09 |
| rubasov | it could be added easily | 16:09 |
| mlavalle | let me think about it, now that I am playing with it | 16:09 |
| rubasov | ok | 16:10 |
| mlavalle | any other udates from you rubasov? | 16:10 |
| rubasov | a bit | 16:10 |
| rubasov | I know slaweq has already seen these changes | 16:10 |
| rubasov | I have made some progress with osprofiling a vif plug | 16:10 |
| rubasov | together with gibi | 16:11 |
| rubasov | these two changes: https://review.opendev.org/666610 https://review.opendev.org/665715 | 16:11 |
| rubasov | I have some feedback from ralonsoh to fix | 16:11 |
| rubasov | and also some ugly interdependent unit test failures to fix too | 16:12 |
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| rubasov | but the main point is that those two patches now can get a trace through ovs-agent | 16:12 |
| mlavalle | I took a quick look at these patches Friday (I think) | 16:12 |
| rubasov | from nova through ovs-agent and back to neutron-server | 16:12 |
| ralonsoh | I still have some concerns about storing so much information in the bridge register | 16:13 |
| rubasov | ralonsoh: sorry I did not have the time to answer yet | 16:13 |
| ralonsoh | rubasov, no problem | 16:13 |
| ralonsoh | no rush | 16:13 |
| rubasov | but I think it should not be that much info there | 16:13 |
| rubasov | it depends on the number of cuncurrent traces | 16:13 |
| rubasov | which can only come from trusted users | 16:13 |
| rubasov | that number does not scale together with the number of ports on an agent | 16:14 |
| ralonsoh | no, for sure | 16:14 |
| rubasov | but with the number of concurrent traces | 16:14 |
| slaweq | ralonsoh: yes, IIUC rubasov's patch it will remove any trace-id from br-int just after use it | 16:14 |
| ralonsoh | but I don't want also to leave not needed info in the bidge register | 16:14 |
| ralonsoh | if so, that's ok for me | 16:14 |
| slaweq | but rubasov please correct me if I'm wrong :) | 16:15 |
| ralonsoh | and eventually, once Sean merges the patch in nova, we'll put everyting in the port register | 16:15 |
| rubasov | ralonsoh: by default ovs-agent removes the trace info as soon as it sees it | 16:15 |
| rubasov | ralonsoh: on the other hand I fully agree that it's an ugly hack to put trace info there :-) | 16:16 |
| rubasov | and I'd like to see Sean's patch merged | 16:16 |
| rubasov | I'm just not sure I want to make it a dependency | 16:16 |
| ralonsoh | not for now | 16:17 |
| rubasov | ralonsoh: also I could add some extra cleanup | 16:17 |
| ralonsoh | perfect | 16:17 |
| rubasov | like deleting all trace info from the bridge on ovs-agent restart | 16:17 |
| rubasov | would that be better? | 16:18 |
| ralonsoh | for sure! | 16:18 |
| rubasov | then I'll do that | 16:18 |
| rubasov | let me know if you see other places in the code where we can do some meaningful cleanup | 16:19 |
| rubasov | unless you have some questions about these patches that's all from me | 16:20 |
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| mlavalle | thanks for the update. and thanks to ralonsoh for helping with this :-) | 16:20 |
| rubasov | yep thanks | 16:21 |
| ralonsoh | 0/ | 16:21 |
| mlavalle | On my side, as I indicated above, I've been running the create_bind_port scenario | 16:22 |
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| mlavalle | I creatde reports and posted them here: https://github.com/miguellavalle/neutron-perf/tree/july-29th/threadripper | 16:23 |
| mlavalle | If you go to the reports folder, you will see the different runs, where I increase the number of iteration and the concurrency gradually | 16:24 |
| mlavalle | I also created a quick overview of results here: http://paste.openstack.org/show/755065/ | 16:24 |
| slaweq | so it looks for me that using osprofiler is slowing down everything a lot | 16:26 |
| mlavalle | As you can see, we went from an average duartion of 63.282 secs with 10 iteration, concurrency 5 | 16:26 |
| mlavalle | yes, it does | 16:26 |
| mlavalle | but at least for the time being it is a good window into what it is going on | 16:27 |
| rubasov | but still the trends with osprofiler should be the same as without it, right? | 16:27 |
| mlavalle | I don't think we should focus on the absolute durations | 16:27 |
| mlavalle | we should focus on the trend | 16:27 |
| rubasov | so we should still see how it scales | 16:27 |
| mlavalle | exactly rubasov | 16:27 |
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| slaweq | I agree | 16:28 |
| slaweq | I am just surprised that it has so much overhead | 16:28 |
| mlavalle | it is a lot of overhead | 16:28 |
| mlavalle | but if you think about it, it's not surprising | 16:28 |
| mlavalle | we are logging each DB operation | 16:29 |
| mlavalle | anyway... | 16:29 |
| rubasov | a lots of I/O to send to the trace point db | 16:29 |
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| mlavalle | going back to my oririnl comment, with 80 iterations, 20 concurrency, we go to average duration of 147.887 | 16:30 |
| mlavalle | in that report folder you will find the rally report (for example iterations-10-concurrency-5.html) with one or several corresponding osprofiler reports (for example iterations-10-concurrency-5-osprofiler-max.html) | 16:33 |
| mlavalle | if the osprofiler report name contains the 'max' suffix, it means that it referes to the iteration with the largest duration | 16:34 |
| rubasov | what looks good is that there's not much of a spread, the 95 percentile values are close to the median values | 16:35 |
| rubasov | so neutron-server seems to be performing at a consistent speed | 16:35 |
| slaweq | rubasov: slow but stable :D | 16:36 |
| rubasov | and based on the first two we may need to divide the numbers by 5 (the slowdown because of osprofiler) | 16:36 |
| mlavalle | would that be an indication that we haven't reached a limit? i.e. the performance knee wehere response time grows exponentially? | 16:37 |
| mlavalle | I mean the fact that the 95th percentile is still close to the median? | 16:37 |
| jrbalderrama | BTW any plan to perform more test with more physical resources to compare the results with and w/o the profiler ? | 16:38 |
| rubasov | I don't think the spreads in itself tells much about bottlenecks | 16:39 |
| rubasov | or at least I don't see how | 16:39 |
| mlavalle | fair point | 16:39 |
| rubasov | other than we're likely hitting the same cause of slowness in each run | 16:39 |
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| rubasov | so if we can improve that we'll likely improve all runs | 16:40 |
| mlavalle | I haven't identified a big / single obvious bottleneck in the case of port creation and update. so it going to require a very fine grained analysys of the reports, which I will attempt as my next step | 16:41 |
| mlavalle | But in the case of subnet creation I found what seems to be a tentative surprise | 16:41 |
| rubasov | this is already very cool, thank you | 16:41 |
| slaweq | mlavalle: one more question: what are those sql update queries in Your summary? | 16:42 |
| mlavalle | If you look at lines 75-78 and 99-100 in my summary.... | 16:42 |
| mlavalle | you will see SQL update statements that are executed during subnet creation | 16:43 |
| mlavalle | in the 60 / 15 and 80 / 20 scenarios I can see that those SQL statements take arounf 8 to 9 seconds | 16:43 |
| mlavalle | while the total subnet creation time is arounf 25 30 seconds | 16:44 |
| mlavalle | am I being clear? | 16:44 |
| slaweq | so those are slowest queries in subnet creation requests, right? | 16:45 |
| slaweq | in fact it's always the same query | 16:45 |
| mlavalle | exactly | 16:45 |
| mlavalle | let's take this as tentative yet | 16:45 |
| mlavalle | I just found this last night | 16:45 |
| mlavalle | but it really stands out | 16:45 |
| slaweq | ok | 16:46 |
| rubasov | do you have multiple query lines because we're hitting a db_retry? | 16:46 |
| mlavalle | yeah, I need to investigate and relate this to the code and the log files | 16:46 |
| mlavalle | but retries are clearly a possibility | 16:47 |
| rubasov | ok | 16:47 |
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| mlavalle | and I also need to compare a port creation / update in the 10 / 5 scenario with their conterpart in the 80 / 20 scenario | 16:48 |
| mlavalle | becaause in that case there is not a single operation that stands out | 16:48 |
| mlavalle | but clearly a lot of small operations are adding up to a big increase in time | 16:48 |
| mlavalle | makes sense? | 16:49 |
| slaweq | yes | 16:50 |
| mlavalle | any more questions or observations | 16:50 |
| mlavalle | ? | 16:50 |
| rubasov | yes it does | 16:50 |
| slaweq | I don't have anything else to add | 16:50 |
| mlavalle | jrbalderrama: yes, that's the plan lomger term | 16:51 |
| mlavalle | but before getting there, I would like to have deeper knowledge on where bottlenecks are | 16:51 |
| mlavalle | so we can perform a very enlightening experiment | 16:52 |
| mlavalle | and btw, thanks for attending | 16:52 |
| mlavalle | and Viva Colombia! I bet all your French buddies are disappointed | 16:52 |
| ralonsoh | hahahah | 16:53 |
| slaweq | LOL | 16:53 |
| jrbalderrama | hahaha we still are the champions in other sports ;) and the tour is a French heritage ! | 16:54 |
| mlavalle | that's true | 16:54 |
| mlavalle | it is a big victory for the Colombians, though | 16:55 |
| jrbalderrama | back to the the point. Sounds good for me. We are looking forward to launch some tests here | 16:55 |
| mlavalle | ok, we'll keep you posted | 16:55 |
| jrbalderrama | thank you all! | 16:55 |
| mlavalle | no rush on the PR | 16:56 |
| mlavalle | anything else we should discuss today? | 16:56 |
| slaweq | not from me | 16:57 |
| rubasov | neither from me | 16:58 |
| mlavalle | Thanks for attending! | 16:58 |
| mlavalle | #endmeeting | 16:58 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 16:58 | |
| openstack | Meeting ended Mon Jul 29 16:58:23 2019 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 16:58 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/neutron_performance/2019/neutron_performance.2019-07-29-16.00.html | 16:58 |
| ralonsoh | bye | 16:58 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/neutron_performance/2019/neutron_performance.2019-07-29-16.00.txt | 16:58 |
| rubasov | thank you | 16:58 |
| slaweq | thx and see You | 16:58 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/neutron_performance/2019/neutron_performance.2019-07-29-16.00.log.html | 16:58 |
| slaweq | o/ | 16:58 |
| rubasov | bye | 16:58 |
| jrbalderrama | bye | 16:58 |
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