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| rosmaita | jungleboyj whoami-rajat rajinir lseki carloss pots woojay erlon geguileo eharney rosmaita enriquetaso e0ne smcginnis davidsha walshh_ xyang hemna _hemna tosky sfernand | 16:00 |
|---|---|---|
| rosmaita | #startmeeting cinder | 16:00 |
| openstack | Meeting started Wed Oct 30 16:00:15 2019 UTC and is due to finish in 60 minutes. The chair is rosmaita. Information about MeetBot at http://wiki.debian.org/MeetBot. | 16:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 16:00 |
| e0ne | hi | 16:00 |
| *** openstack changes topic to " (Meeting topic: cinder)" | 16:00 | |
| openstack | The meeting name has been set to 'cinder' | 16:00 |
| enriquetaso | o/ | 16:00 |
| eharney | hi | 16:00 |
| smcginnis | o/ | 16:00 |
| rajinir | o/ | 16:00 |
| whoami-rajat__ | hi | 16:00 |
| anastzhyr | Hi | 16:00 |
| rosmaita | welcome anastzhyr | 16:00 |
| enriquetaso | welcome anastzhyr | 16:00 |
| rosmaita | anastzhyr is an outreachy intern working on cinder | 16:01 |
| rosmaita | being mentored by enriquetaso | 16:01 |
| smcginnis | Hey anastzhyr! | 16:01 |
| whoami-rajat__ | Welcome anastzhyr | 16:01 |
| anastzhyr | Hello everyone once again :) | 16:01 |
| rosmaita | please keep an eye on anastzhyr 's patches this week | 16:01 |
| geguileo | hi! | 16:02 |
| rosmaita | light agenda today, so i'll wait another minute | 16:02 |
| rosmaita | though it looks like we have good attendance today | 16:02 |
| *** davee_ has joined #openstack-meeting | 16:03 | |
| rosmaita | ok, that's about a minute | 16:03 |
| lseki | hi | 16:03 |
| rosmaita | #topic updates | 16:03 |
| *** openstack changes topic to "updates (Meeting topic: cinder)" | 16:03 | |
| davee_ | o/ | 16:03 |
| rosmaita | first item, no meeting next week due to the PTG | 16:03 |
| rosmaita | second item, about how our PTG sessions will go | 16:04 |
| rosmaita | i'm planning to do what jungleboyj did and just go through the topics giving them as much or little time as they need | 16:04 |
| rosmaita | and keeping notes on the etherpad | 16:04 |
| rosmaita | i'll have a rough ordering ready before friday this week | 16:05 |
| smcginnis | I think that has worked well. | 16:05 |
| rosmaita | right now, there are a few topics that will have a definite start time so we can coordinate things | 16:05 |
| rosmaita | #link https://etherpad.openstack.org/p/shanghai-ptg-cinder | 16:05 |
| smcginnis | rosmaita: Do we have a nova-cinder session planned? | 16:05 |
| rosmaita | no, we don't | 16:05 |
| rosmaita | is there anything in particular we want to discuss with them? | 16:06 |
| smcginnis | I'm not sure if we have much we need to coordinate with them at this point. I think we've worked through most things like multiattach. | 16:06 |
| rosmaita | that was my impression too | 16:06 |
| rosmaita | also, i think this is going to be a bit informal -- we're mostly all in one big room at different tables | 16:07 |
| geguileo | rosmaita: I think I added one topic to the etherpad | 16:07 |
| geguileo | rosmaita: https://etherpad.openstack.org/p/cinder-ussuri-ptg-planning | 16:07 |
| geguileo | rosmaita: L71 | 16:07 |
| rosmaita | i see -improve replication | 16:07 |
| geguileo | yup | 16:07 |
| smcginnis | What was that? Remove replication? Sounds good. | 16:07 |
| smcginnis | :P | 16:07 |
| geguileo | rofl rofl | 16:07 |
| rosmaita | ok, eric fried sent out a message about cross project discussion, i will follow up with him | 16:08 |
| rosmaita | #action rosmaita follow up with nova team about ptg session on improving replication | 16:08 |
| geguileo | rosmaita: thanks! | 16:08 |
| rosmaita | np, thanks for the reminder | 16:08 |
| rosmaita | ok, just a few things about the schedule | 16:08 |
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| rosmaita | wednesday is cross-project day, so you're free to go meet whatever teams interest you | 16:09 |
| rosmaita | thursday we start at 9:00 with onboarding | 16:09 |
| rosmaita | it's going to be a bit weird, there's no projector or anything | 16:09 |
| geguileo | rosmaita: I can bring my portable projector | 16:10 |
| rosmaita | but, the expectation is that people who've been through the upstream institute will come meet groups they are interested in | 16:10 |
| geguileo | rosmaita: we just need to be close-ish to a wall | 16:10 |
| rosmaita | geguileo: yeah, i don't know anything about the layout of the room other than we are at table "A" | 16:10 |
| geguileo | A for Awesome? | 16:10 |
| geguileo | sounds good | 16:10 |
| rosmaita | :) | 16:11 |
| smcginnis | Jay had a Forum session to get feedback on using volume types. He realized he has a schedule conflict for that, so he roped me in right before taking off to China this morning. Whoever else can join and help with that, it would be appreciated. | 16:11 |
| rosmaita | A for "Austin" | 16:11 |
| smcginnis | We are supposed to have flip charts. | 16:11 |
| smcginnis | Could project on that in a pinch. | 16:11 |
| rosmaita | smcginnis: thanks for the reminder, i will put the forum sessions on our etherpad | 16:11 |
| smcginnis | Not sure if there are any union type rules that would prevent us from hooking up a projector though. | 16:11 |
| smcginnis | rosmaita: Thanks! | 16:11 |
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| geguileo | smcginnis: I'll bring it just in case | 16:12 |
| rosmaita | geguileo: jungleboyj is running the upstream institute right before the summit, so he can probably snag us a projector if it will work | 16:12 |
| rosmaita | geguileo: up to you | 16:12 |
| rosmaita | ok, so my real point here is that even though 9:00-9:45 is "onboarding", all the cinder people should be there anyway because part of the idea is that new people can meet the team they will be working with | 16:13 |
| rosmaita | the only other scheduled topic ATM is meeting with the edge working group | 16:14 |
| rosmaita | thursday, right after lunch | 16:14 |
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| rosmaita | also, team dinner on thursday | 16:14 |
| rosmaita | is there anyone from shanghai here now? | 16:14 |
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| rosmaita | guess not | 16:15 |
| rosmaita | i'll follow up with Liang Fang, who i'm pretty sure works out of shanghai | 16:16 |
| rosmaita | i got a recommendation for a restaurant, but we will have to make a reservation | 16:16 |
| smcginnis | rosmaita: Is the team dinner info on an etherpad or something? Where do you want to try to get a headcount? | 16:17 |
| rosmaita | ok, i will follow up on that and send out something to the ML so other peopel in shanghai can join us | 16:17 |
| rosmaita | smcginnis: just added it at the top of https://etherpad.openstack.org/p/shanghai-ptg-cinder | 16:17 |
| smcginnis | +1 | 16:17 |
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| smcginnis | rosmaita: Are we signed up for a team photo? | 16:18 |
| rosmaita | yes, at 10:50 on thursday | 16:18 |
| smcginnis | Ah, now I see it. | 16:18 |
| rosmaita | yeah, i forgot to point that out | 16:18 |
| rosmaita | ok, so keep an eye on the etherpad for more info as it becomes available | 16:19 |
| rosmaita | i will fill it in with topics from the planning etherpad, and some follow up from the train midcycle | 16:20 |
| rosmaita | should give us a full day and a half | 16:20 |
| rosmaita | i'm planning to finish before lunch on friday | 16:20 |
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| rosmaita | the table will still be available until 4:30 pm for anyone who wants to stick around and have a cinder hackfest | 16:20 |
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| rosmaita | i think that's all the updates | 16:21 |
| rosmaita | ok, no formal next topic | 16:21 |
| rosmaita | #topic open discussion | 16:21 |
| *** openstack changes topic to "open discussion (Meeting topic: cinder)" | 16:21 | |
| smcginnis | I've heard there is no staying late though. As soon as the scheduled time is up - time to get out. | 16:21 |
| enriquetaso | hey | 16:21 |
| rosmaita | yes, that's what I've heard too | 16:21 |
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| enriquetaso | As rosmaita already mentioned. We have an outreachy candidate. Outreachy deadline is morning - 5th of Nov. Feel free to review anastzhyr 's patchs https://review.opendev.org/#/q/owner:%22Anastasiya+Zhyrkevich%22+status:open ! | 16:22 |
| whoami-rajat__ | rosmaita, there was a discussion regarding meeting time change last week, is there an update on the same? | 16:22 |
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| rosmaita | enriquetaso: thanks for the reminder -- everyone, it's important that anastzhyr gets some code merged this week -- i'm not saying just approve it, but we need to review expeditiously so that she can revise as necessary | 16:23 |
| anastzhyr | enriquetaso: thank you for making my visibility. I would be happy to dive into more low-hanging-fruit tasks to understand cinder deeper. If you have anything on mind, please let me know | 16:24 |
| rosmaita | whoami-rajat__: i did not see any reply on the ML when i checked this morning | 16:24 |
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| enriquetaso | :D | 16:24 |
| rosmaita | so i guess my update is: if you have a strong feeling about moving the meeting time or leaving it where it is, please respond to that thread! | 16:24 |
| rosmaita | also, i did not see any replies to my request for info about closing some branches | 16:25 |
| whoami-rajat__ | rosmaita, is poll an option for better response ? | 16:25 |
| rosmaita | whoami-rajat__: i don't know -- there aren't a lot of choices | 16:25 |
| rosmaita | same day for sure | 16:26 |
| rosmaita | either 1 hour earlier, 2 hours earlier, or stay the same | 16:26 |
| rosmaita | but do people think i'd get more responses with a poll? | 16:26 |
| rosmaita | i guess whoami-rajat__ is right ... apparently asking for a response on the thread has not worked | 16:27 |
| smcginnis | That may be useful. | 16:27 |
| smcginnis | SurveyMonkey or CIVS poll. | 16:27 |
| rosmaita | the only reason i'm hesitating is that i wanted to weigh people who definitely attend more heavily | 16:27 |
| geguileo | at least it would show how many people care or don't care if it's moved | 16:27 |
| rosmaita | we have 2 silicon valley time zone people who attend pretty regularly | 16:28 |
| rosmaita | ok, i will put together a poll and send out a link on the ML | 16:28 |
| rosmaita | will do that later today, so please look for it! | 16:29 |
| rosmaita | #action rosmaita put together meeting time change poll | 16:29 |
| davee_ | suggestion: have the poll and the people who show up get vote counted twice | 16:29 |
| whoami-rajat__ | rosmaita, great. thanks! should I reply to the previous ML too? | 16:29 |
| rosmaita | whoami-rajat__: i guess if you have a good argument, you might want to reply on the ML so that other people can think about it before they vote | 16:30 |
| rosmaita | but to follow up with what davee_ said | 16:30 |
| rosmaita | i am going to reserve the right to weigh the responses to the poll in considering what to do | 16:31 |
| smcginnis | ++ | 16:31 |
| rosmaita | i realize it's tricky, if this is a bad time, the people it's bad for aren't here because it's bad | 16:31 |
| geguileo | rosmaita: you can add that as a disclaimer ;-) | 16:31 |
| rosmaita | ok, i will do that | 16:31 |
| geguileo | rosmaita: and we'll also want to know about the new people from the PTG, right? | 16:32 |
| rosmaita | geguileo: that is a good point | 16:32 |
| rosmaita | ok, here is what i think i should do | 16:32 |
| rosmaita | let's keep the ML discussion going -- so if you have an opinion please reply there | 16:33 |
| rosmaita | we can see how many prospective new people we get at the ptg | 16:33 |
| rosmaita | and we can take a poll shortly after, after those people have had time to show up | 16:33 |
| rosmaita | so i won't do a poll until after the ptg | 16:33 |
| geguileo | sounds good | 16:34 |
| rosmaita | ok, Liang Fang put some info on today's agenda about being in china | 16:34 |
| rosmaita | and i see that some people have updated the info a bit | 16:34 |
| rosmaita | ok, last thing on the agenda | 16:36 |
| rosmaita | some teams are planning a virtual PTG separate from next week's ptg | 16:36 |
| rosmaita | we are not going to be able to stream this one | 16:37 |
| rosmaita | "this one" being in shanghai | 16:37 |
| rosmaita | and i dont know if the recording will be any good | 16:37 |
| rosmaita | it's going to be a big room with a bunch of teams all meeting at the same time | 16:37 |
| rosmaita | so it may be worth having a follow up videoconference | 16:38 |
| rosmaita | but only if people here are interested | 16:38 |
| rosmaita | (this is where people say if they are interested) | 16:38 |
| davee_ | interested since I have no travel budget this year | 16:38 |
| davidsha | A video conference sounds good | 16:39 |
| rosmaita | ok, this one will need a poll -- the time will be tricky, but also how long | 16:40 |
| rosmaita | i am inclined to say 2 hours, lunch break, 2 hours | 16:40 |
| davidsha | That sounds good | 16:40 |
| rosmaita | and i guess the way i'd do the topic list is flag topics that need follow up during the shanghai ptg | 16:41 |
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| rosmaita | and also allow new topics for people who weren't there? | 16:42 |
| rosmaita | and i guess being virtual, we don't have to get it right the first time | 16:42 |
| rosmaita | what i mean is, if 4 hours isn't enough, we can do another follow up | 16:42 |
| davidsha | kk | 16:42 |
| rosmaita | ok, well i am thinking out loud there -- i'll put together a poll or something and send out an announcement on the ML | 16:43 |
| rosmaita | #action rosmaita poll for virtual PTG | 16:43 |
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| rosmaita | ok, i will shut up now | 16:44 |
| rosmaita | anyone else have anything for open discussion? | 16:44 |
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| davee_ | going once... | 16:46 |
| geguileo | going twice... | 16:47 |
| rosmaita | OK, people who will be in shanghai, feel free to add things to the ptg etherpad if you want to get info out to everyone | 16:47 |
| davidsha | Sold! | 16:47 |
| davee_ | sold to the man in the purple polka dot clown suit! | 16:47 |
| anastzhyr | Any volunteers who want to discuss the purposes cinder tempest , welcome to make good advices to me) | 16:47 |
| geguileo | anastzhyr: I'm reviewing the manage tests patch, I'll finish soon | 16:48 |
| rosmaita | no sense hanging around here, then ... please remember to look at https://review.opendev.org/#/q/owner:%22Anastasiya+Zhyrkevich%22+status:open | 16:49 |
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| rosmaita | safe travels to all heading to shanghai | 16:49 |
| rosmaita | and also to those heading anywhere | 16:49 |
| geguileo | safe travels!!! | 16:49 |
| rosmaita | no meeting next week, but look for a poll about scheduling the virtual PTG | 16:50 |
| rosmaita | and no poll about meeting time until after the PTG | 16:50 |
| rosmaita | but respond on the ML if you have a strong opinion and you want to influence others | 16:50 |
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| rosmaita | ok, i need to make way for the man in the purple polka dot clown suit | 16:51 |
| rosmaita | thanks for attending, everyone! | 16:51 |
| rosmaita | #endmeeting | 16:51 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 16:51 | |
| openstack | Meeting ended Wed Oct 30 16:51:43 2019 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 16:51 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/cinder/2019/cinder.2019-10-30-16.00.html | 16:51 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/cinder/2019/cinder.2019-10-30-16.00.txt | 16:51 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/cinder/2019/cinder.2019-10-30-16.00.log.html | 16:51 |
| davidsha | thanks! | 16:51 |
| whoami-rajat__ | Thanks! | 16:53 |
| anastzhyr | Thanks | 16:53 |
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| timburke | #startmeeting swift | 21:00 |
| openstack | Meeting started Wed Oct 30 21:00:03 2019 UTC and is due to finish in 60 minutes. The chair is timburke. Information about MeetBot at http://wiki.debian.org/MeetBot. | 21:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 21:00 |
| *** openstack changes topic to " (Meeting topic: swift)" | 21:00 | |
| openstack | The meeting name has been set to 'swift' | 21:00 |
| timburke | who's here for the swift meeting? | 21:00 |
| kota_ | o/ | 21:00 |
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| mattoliverau | o/ | 21:00 |
| rledisez | o/ | 21:00 |
| timburke | agenda's at https://wiki.openstack.org/wiki/Meetings/Swift | 21:01 |
| timburke | #topic Shanghai | 21:01 |
| *** openstack changes topic to "Shanghai (Meeting topic: swift)" | 21:01 | |
| timburke | it's almost here! | 21:01 |
| kota_ | yey | 21:02 |
| timburke | in two days, i'll be on the plane! i'm excited (and a little freaking out) | 21:02 |
| rledisez | H-36 before my flight :) | 21:02 |
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| timburke | i've been adding what events i know about to the etherpad | 21:02 |
| timburke | #link https://etherpad.openstack.org/p/swift-ptg-shanghai | 21:02 |
| kota_ | it'll logn flight, please safe. | 21:03 |
| kota_ | be long | 21:03 |
| timburke | in particular, i saw there was a game night, like there have been the last few PTGs | 21:03 |
| timburke | they tend to be pretty fun, and a good opportunity to get to know some other the other openstackers better | 21:03 |
| timburke | i also saw that cschwede is going to be there! | 21:04 |
| kota_ | good to know | 21:04 |
| kota_ | when? | 21:04 |
| timburke | (at the ptg that is; i don't know about game night ;-) | 21:04 |
| kota_ | ah, you told about the past ones. | 21:04 |
| kota_ | got it. | 21:05 |
| timburke | game night's thursday, 8:00 PM, City Center Mariott Lobby | 21:05 |
| kota_ | ah ok. thx. | 21:05 |
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| * kota_ should go to the etherpad link | 21:06 | |
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| timburke | oh, there was also a flyer the foundation put together, where'd i put that... | 21:07 |
| timburke | #link https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai-Travel-Tips.pdf | 21:07 |
| timburke | with some travel tips | 21:07 |
| kota_ | travel tips! | 21:07 |
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| timburke | "Some restrooms do not supply toilet paper. Suggested to carry some with you." is a little disconcerting... | 21:08 |
| timburke | but good to know! | 21:08 |
| kota_ | oic. "Download ALL apps needed on your phone / desktop (including the Summit Mobile App!)" | 21:08 |
| kota_ | `including the Summit App!` | 21:09 |
| mattoliverau | oh wow so soon | 21:09 |
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| timburke | yeah, i still need to get my phone situated... laptop's prepped; phone, not yet | 21:09 |
| mattoliverau | at least y'all will be close to my timezone soon (assuming you'll have irc access) | 21:09 |
| kota_ | strictly speaking, my timezone is closer ;-) | 21:10 |
| timburke | mattoliverau, i *think* irc will be ok? ptgbot isn't going to be so useful otherwise, anyway ;-) | 21:10 |
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| mattoliverau | ahh good point :) | 21:11 |
| mattoliverau | kota_: lol | 21:11 |
| mattoliverau | that is true | 21:11 |
| timburke | all right, that's all i've got for summit/ptg -- i can't wait to see kota_ clayg rledisez alecuyer and cschwede there! | 21:12 |
| timburke | on to updates! | 21:12 |
| timburke | #topic versioning | 21:12 |
| *** openstack changes topic to "versioning (Meeting topic: swift)" | 21:12 | |
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| timburke | clayg and tdasilva have got the three patches stacked up now, and they've been iterating on it | 21:13 |
| mattoliverau | cschwede there too, that's awesome! | 21:13 |
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| timburke | i haven't been able to follow along quite as closely as before, as i've gotten a bit distracted with summit/ptg/general-travel prep | 21:14 |
| mattoliverau | timburke: you do a great job of following as much as you do. | 21:15 |
| mattoliverau | I guess they're not here to do an update. maybe we just link the patches and move on then? | 21:16 |
| timburke | but i got the impression they've been adding tests and fixing up rough edges, with the idea that clayg will have a pretty solid picture of what's involved so we can talk about it at the ptg | 21:16 |
| mattoliverau | cool | 21:16 |
| mattoliverau | so what comes first, the null containers? | 21:16 |
| mattoliverau | or namespace | 21:17 |
| mattoliverau | what ever terminology I'm suppose to use :P | 21:17 |
| timburke | yep, null namespace first -- https://review.opendev.org/#/c/682138/ | 21:17 |
| timburke | then a new versioning api for swift -- https://review.opendev.org/#/c/682382/ | 21:17 |
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| timburke | and finally hooking up s3api to use the new api -- https://review.opendev.org/#/c/682382/ | 21:18 |
| mattoliverau | sweet | 21:18 |
| timburke | i think that ought to cover it | 21:18 |
| timburke | #topic lots of small files | 21:19 |
| *** openstack changes topic to "lots of small files (Meeting topic: swift)" | 21:19 | |
| kota_ | those look big changes | 21:19 |
| timburke | kota_, fortunately, almost 4k of the 5k lines in that middle patch are just new test files :-) | 21:20 |
| kota_ | :-) | 21:20 |
| rledisez | alecuyer is not here, but I think he told me there is nothing new on losf this week | 21:20 |
| timburke | rledisez, is there anything we should be trying to do or look at to be more prepared at the ptg? | 21:21 |
| rledisez | I think what we have in mind right now is to stop evolving it for w while until it can be merged (fix bugs, tests, nothing new before merge) | 21:22 |
| rledisez | I think alecuyer should be answering your question, i can't answer honestly | 21:22 |
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| timburke | that's ok, no worries. something of a freeze sounds reasonable; and i guess the rest of us ought to be thinking about what needs to happen next for us to feel comfortable merging it to master | 21:24 |
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| timburke | #topic profiling | 21:25 |
| *** openstack changes topic to "profiling (Meeting topic: swift)" | 21:25 | |
| timburke | #link https://etherpad.openstack.org/p/swift-profiling | 21:25 |
| timburke | rledisez, take it away :-) | 21:25 |
| rledisez | thx :) | 21:25 |
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| rledisez | so, the full story is in the etherpad, but i short, we are CPU bound on proxy-servers, and it does not seem right that a decent proxy-server cannot handle more than 3 or 4 Gbps of trafic | 21:26 |
| rledisez | so I did some profiling, I played with conf option timburke suggested last week and I put result there | 21:26 |
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| rledisez | first of all, I'm interested if you see any issue in the bench I did (wrong methodology etc…) | 21:27 |
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| rledisez | after that, I propose some ideas at the bottom to improve the situation i'd like to discuss | 21:27 |
| rledisez | basically, object-server is fine. proxy/GET is fine, proxy/PUT is damn slow | 21:27 |
| timburke | you said it's got 10Gb NICs -- are there two of them? one client-facing, one cluster-facing? | 21:28 |
| rledisez | timburke: on our production yes, but for the benchmark, all was local? on production we are far from 10Gbps on either interface | 21:29 |
| rledisez | i mean, it was local, for sure :) | 21:29 |
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| rledisez | note: I still need to bench with EC policy | 21:30 |
| timburke | and are we measuring bandwidth on the client-facing traffic, or cluster-facing? | 21:30 |
| timburke | (just to sanity check ;-) | 21:30 |
| zaitcev | Is it possible refuse in-kernel MD5 and try some local libraries? | 21:30 |
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| zaitcev | Maybe the kernel overhead is too great or something. | 21:30 |
| rledisez | timburke: client facing (and I understand that cluster facing we are expecting N*bandwidth for a PUT) | 21:31 |
| kota_ | rledisez: the benchmark ran under py3 or still py2? | 21:32 |
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| rledisez | zaitcev: are you talking about the splice option? | 21:32 |
| rledisez | kota_: I did both for some measure, I didn't see any major difference, but mostly py2 | 21:32 |
| kota_ | ok | 21:32 |
| timburke | so with the 1MB chunk size... the client's seeing 5Gbps, so we must be generating 15Gbps on the cluster interface -- which seems about in line with the upper-bounds you were seeing in the object-server... | 21:34 |
| zaitcev | No, I am saying that all of our MD5 are calculated by kernel nowadays, right? | 21:34 |
| zaitcev | Every time you invoke md5 it's a syscall | 21:34 |
| zaitcev | Using the AF_LINK or what's its name | 21:34 |
| timburke | zaitcev, nope -- rledisez already pointed out that i had the wrong idea about that ;-) | 21:34 |
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| zaitcev | ok | 21:34 |
| rledisez | timburke: In my bench I had 3 object-server that could reach about 14Gbps, so in the best of best world the proxy should handle 15Gbps (because it's all localhost trafic, writing on /dev/shm) | 21:35 |
| timburke | when we're writing we just use the normal python hashlib: https://github.com/openstack/swift/blob/2.23.0/swift/obj/diskfile.py#L1669 | 21:36 |
| rledisez | and it's quite good given than object-server is "only" 20% slower than simple md5sum | 21:37 |
| rledisez | so I'm not expecting major improvement on object-server | 21:37 |
| rledisez | (well +17% bw / -17% cpu is still something :)) | 21:37 |
| rledisez | just to be clear, i'm not suggesting at all to remove md5 calculation :) I just did it to get the best of proxy-server | 21:38 |
| timburke | eh, i know notmyname's talked about the idea of using soemthing other than md5 before... that's not *such* a crazy idea... | 21:40 |
| timburke | but yeah, i'm not sure how best to further investigate ATM | 21:40 |
| mattoliverau | Makes me wonder if some simple perf daily or weekly check in zuul might be useful. Obviously with a grain of salt because of shared tenants. But might catch major degredations. | 21:41 |
| rledisez | well, with just the no-timeout/no-queue on proxy we already could get a signifant perf improvement | 21:41 |
| mattoliverau | I wonder why timeouts cause such a slow down, is it there implementation, because I wonder why a watchdog thread works so well | 21:42 |
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| mattoliverau | I would've thought a timeout would be a timed thread or something somewhat similar | 21:43 |
| * mattoliverau has never looked under the hood though | 21:43 | |
| mattoliverau | is it something evenlet monkey patches (me is just thinking out loud). | 21:43 |
| rledisez | mattoliverau: it is quite good, except we call it for each chink (so each piece of 64KB), so it is called thousands of time for an upload | 21:43 |
| mattoliverau | ahh | 21:44 |
| mattoliverau | ok | 21:44 |
| rledisez | while a watchdog will be initalized once and jsut a variable is updated then | 21:44 |
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| timburke | yeah, eventlet basically schedules an event for later to raise the Timeout in the appropriate thread | 21:44 |
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| timburke | and i think it's also part of why the increased chunk size captures a lot of the no-timeout gain | 21:45 |
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| rledisez | and the queue, well, the same * N, and it needs a synchronisation each time (so lock etc…) | 21:45 |
| rledisez | timburke: right, bigger chunk == less call to Timeout/queue | 21:46 |
| timburke | rledisez, did you happen to measure RAM consumption differences between the different chunk sizes? | 21:46 |
| timburke | i wonder if we should just up the default chunk size... | 21:47 |
| rledisez | nope, I didn't. but it's quite easy to calculate the woerst case scenario I think. the max queue size is 10 IIRW, there is N replica, so chink_size * N * 10 ? | 21:47 |
| rledisez | *chunk | 21:47 |
| rledisez | per PUT | 21:47 |
| timburke | and it was always a single PUT at a time, right? | 21:48 |
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| rledisez | yeah, Im planning to do more on concurrency later to see if there is something to optimize there | 21:49 |
| rledisez | right now it's focus on one connection performance | 21:49 |
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| mattoliverau | rledisez: great job | 21:51 |
| timburke | out of curiosity, what kinds of speeds can you get with netcat? testing locally just now, i can get ~24GB/s with dd piping straight to /dev/null, but only 1.3-1.4GB/s (so ~11Gbps) if i send it through a socket that's piping to /dev/null... | 21:51 |
| rledisez | timburke: do you have the exact command so I can copy/paste? | 21:52 |
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| timburke | in one terminal, `nc -l 8081 > /dev/null` -- in another, `dd if=/dev/zero bs=1M count=10000 > /dev/null` | 21:53 |
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| rledisez | 15.5 GB/s | 21:53 |
| timburke | i tried twiddling bs/count to do even larger chunk sizes, but it didn't have much difference | 21:53 |
| timburke | why's my laptop so slow!? boo! | 21:54 |
| timburke | good to know though, to keep in mind as an upper bound :-) | 21:54 |
| rledisez | I can provide you a server to work, but you're going to have trouble at china customs ;) | 21:54 |
| timburke | all right, well... i guess we'll keep thinking about it. willing to bet we'll talk about this more next week | 21:55 |
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| kota_ | lol | 21:55 |
| timburke | got just a few more minutes | 21:55 |
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| timburke | #topic open discussion | 21:55 |
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| *** openstack changes topic to "open discussion (Meeting topic: swift)" | 21:55 | |
| timburke | anything else anyone would like to bring up? | 21:55 |
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| mattoliverau | I have a mate who might be convincing his work to do some upstream time. They're interesting in tiering. So if it goes ahead I might point him at those stalled patches. | 21:56 |
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| timburke | \o/ i love new contributors! | 21:56 |
| mattoliverau | if so, a discussion that should be had (maybe at ptg) is is it still the right design? | 21:57 |
| kota_ | good | 21:57 |
| mattoliverau | or maybe should it use the new null namespace and hide tiering containers? | 21:57 |
| timburke | excellent question | 21:58 |
| mattoliverau | I had a chat wtih him about some of it already while giving him a Swift intro the otherday online. | 21:58 |
| timburke | out of curiosity, who's his employer, if you can say? | 21:59 |
| mattoliverau | if you can add that to the list of discussions it would be good. It'll depend on if he can swing it. But maybe as a friday thing after other null namespace dicsussions | 21:59 |
| mattoliverau | Can't say yet | 21:59 |
| timburke | 👍 | 21:59 |
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| mattoliverau | timburke: but you might now them because they may or may not use swiftstack ;) | 21:59 |
| timburke | all right, we're about at time | 22:00 |
| timburke | thank you all for coming, and thank you for working on swift! | 22:00 |
| timburke | #endmeeting | 22:00 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 22:00 | |
| openstack | Meeting ended Wed Oct 30 22:00:22 2019 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 22:00 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/swift/2019/swift.2019-10-30-21.00.html | 22:00 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/swift/2019/swift.2019-10-30-21.00.txt | 22:00 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/swift/2019/swift.2019-10-30-21.00.log.html | 22:00 |
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