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#openstack-nova - 2018-02-09
13:20:46 openstackgerrit Merged openstack/nova master: test_compute_mgr: fix couple of unit tests https://review.openstack.org/539973
13:20:57 openstackgerrit Merged openstack/nova master: Remove unnecessary variables https://review.openstack.org/541964
13:21:09 openstackgerrit Merged openstack/nova master: update docstring param description https://review.openstack.org/541519
13:21:17 openstackgerrit Merged openstack/nova master: doc: fix the link for the evacuate cli https://review.openstack.org/542508
13:21:26 openstackgerrit Merged openstack/nova master: Fix grammar error https://review.openstack.org/542733
13:21:35 openstackgerrit Merged openstack/nova master: fix link https://review.openstack.org/541675
13:21:44 openstackgerrit Merged openstack/nova master: trivial: Fix microversion number in test comment https://review.openstack.org/542019
13:30:00 openstackgerrit Bence Romsics proposed openstack/osc-placement master: PUT dict format to /allocations (v1.11, v1.12) https://review.openstack.org/542819
13:36:13 fried_rice leakypipes: Gooood morning.
13:37:28 cdent edleafe: a while back you were thinking hard about https://bugs.launchpad.net/nova/+bug/1719933 . Did you make any conclusions? Should we bother, or can we kill that bug?
13:37:30 openstack Launchpad bug 1719933 in OpenStack Compute (nova) "placement server needs to retry allocations, server-side" [Medium,Triaged] - Assigned to Jay Pipes (jaypipes)
13:37:34 fried_rice leakypipes: Let me know when's good to do that aggregate distance talk. I'm free for the next hour, and then from 11-4 ET
13:37:35 cdent I guess you left a thing on the PTG etherpad.
13:37:56 cdent moin
13:41:53 leakypipes fried_rice: let's do 11am
13:42:06 fried_rice leakypipes: Roger that.
13:42:42 fried_rice cdent, edleafe, stephenfin, cfriesen, sean-k-mooney: ^ FYI. I'll be taking notes and writing something up after the fact in any case.
13:43:22 cdent fried_rice++
13:43:57 sean-k-mooney fried_rice: just read scoll back
13:44:16 sean-k-mooney * reading
13:44:48 fried_rice sean-k-mooney: Not much scrollback - I'm going to get a brain dump from leakypipes on "modeling [anti-]affinity via aggregate distance" in 2.25h
13:45:14 bauzas oh fuuuuuu
13:45:15 sean-k-mooney Ah ok
13:45:21 bauzas Friday FTW
13:45:29 fried_rice sean-k-mooney: This is related to our NUMA discussions the other day, so I tagged you cause you might be interested to join. But if not, I'll be producing something written for you to consume after.
13:46:50 sean-k-mooney i would definetly like to understand how aggregate distance works as i only understand the distance along the tree approch and dont know how to connect the 2 or even if they are compatible
13:47:23 openstackgerrit Lee Yarwood proposed openstack/nova stable/pike: Encode libvirt domain XML in UTF-8 https://review.openstack.org/542831
13:47:43 sean-k-mooney fried_rice: also i still own you some advanced flavours
13:48:11 fried_rice sean-k-mooney: Heh, yeah, that pastebin from the other day is still on my pile to look at and quiz you about.
14:05:53 figleaf cdent: re: https://bugs.launchpad.net/nova/+bug/1719933 - we agreed that the issue is more complex than simply retrying, hence the PTG discussion
14:05:55 openstack Launchpad bug 1719933 in OpenStack Compute (nova) "placement server needs to retry allocations, server-side" [Medium,Triaged] - Assigned to Jay Pipes (jaypipes)
14:07:09 cdent thanks figleaf. I couldn't remember if there wasn't perhaps a chance for a "meh, nevermind"
14:07:54 figleaf fried_rice: 10am CST?
14:08:05 fried_rice figleaf: Yes
14:08:11 figleaf cdent: it may very well end up being "meh"
14:08:35 figleaf fried_rice: I can join the discussion at that time
14:08:44 fried_rice coo
14:13:29 figleaf cdent: I added a comment to that bug in case anyone else has memory issues
14:13:40 cdent thanks
14:39:41 finucannot fried_rice: Sure thing. If you want, ping me beforehand so I don't forget :)
14:39:51 openstackgerrit Matt Riedemann proposed openstack/nova stable/pike: doc: fix the link for the evacuate cli https://review.openstack.org/542856
14:39:54 fried_rice finucannot: Will do
14:42:11 hrw mriedem: morning
14:42:12 fried_rice sean-k-mooney: What's the proper terminology to say that a NIC (or pf) is "in" a given NUMA node?
14:43:03 fried_rice sean-k-mooney: So like, a NUMA node encompasses a certain portion of the system's CPUs and RAM, and also there's some kind of bus connection to NIC slots that makes it more efficient to use that NIC than the other.
14:45:07 sean-k-mooney fried_rice: generally we say the nic has a numa affinity to numa node x
14:45:16 fried_rice sean-k-mooney: Thanks
14:46:22 sean-k-mooney fried_rice: what that actully means is for a DMA or MMIO capable device the memory adress allocated to that device are from the adress range associated to numa node X
14:46:33 fried_rice sean-k-mooney: Dig
14:48:08 fried_rice Is master Rocky now?
14:48:10 fried_rice mriedem: ^
14:48:23 sean-k-mooney cpus get numa affinity because they are phyically closer to one memory controler then the rest. so address form that controler(numa node) can be loaded into cache faster then form a remote numa node
14:48:45 fried_rice sean-k-mooney: Phew, that gels with my (admittedly extremely limited) understanding.
14:49:41 fried_rice sean-k-mooney: And for PCI devices, there's something about the bus that goes to that particular I/O slot that makes the same kind of communication faster.
14:50:53 sean-k-mooney kindof, each socket on a modern system(e.g. it does not have a front side bus) has a pci controler route
14:51:23 sean-k-mooney each pci slot is phyically wiered to a partcalar pci controer/socket
14:51:43 sean-k-mooney so the pci slots on a mother board have socket affintiy
14:52:11 sean-k-mooney with processors with only one memory controler they have numa afinity too
14:53:01 sean-k-mooney with processors with 2 memory controlers teh numa affinity is determined by what memory controler the kenerl allocates the mmio address form for that device
14:53:16 fried_rice Okay, I said 'bus' but I guess I meant 'socket'. I'm a hardware 'tard.
14:53:30 sean-k-mooney linux puts all pci devices on the first memory controler/numa node on a socket by default
14:55:17 sean-k-mooney fried_rice: working at intel i kindof have to know these things but its all a little archane
14:56:50 openstackgerrit melissaml proposed openstack/nova master: fix typos https://review.openstack.org/542866
15:14:15 mriedem fried_rice: yes master is rocky since we have a stable/queens branch now, however, we likely don't want to land any major changes that are big refactors or delete code until we've fully released queens, because of backports for rc2 if we need them
15:14:17 mriedem hrw: hi
15:14:40 fried_rice mriedem: Roger wilco, thanks.
15:17:54 mriedem melwitt: i've updated launchpad to point rocky as the dev focus, and created the rocky milestones https://launchpad.net/nova/rocky
15:18:05 mriedem based on https://releases.openstack.org/rocky/schedule.html#r-release
15:18:19 melwitt mriedem: cool, thank you
15:18:27 mriedem i'll create a queens-rc2 milestone if we end up having one https://launchpad.net/nova/queens/
15:25:06 mriedem lyarwood: want to hit https://review.openstack.org/#/c/542323/ ?
15:26:12 openstackgerrit Stephen Finucane proposed openstack/python-novaclient master: Remove 2 redundant methods https://review.openstack.org/528325
15:30:37 lyarwood mriedem: ack done
15:35:59 openstackgerrit Balazs Gibizer proposed openstack/nova master: Poison context usage in periodic tasks https://review.openstack.org/542891
15:39:40 openstackgerrit Balazs Gibizer proposed openstack/nova master: Poison context usage in periodic tasks https://review.openstack.org/542891
15:49:57 hrw mriedem: went through your comments and pushed update to https://review.openstack.org/#/c/541728/
15:50:23 hrw mriedem: one of our team members will check for me entries I skipped
15:51:05 leakypipes fried_rice: can you give me another 30 mintues?
15:51:13 fried_rice leakypipes: Okay.
15:51:20 fried_rice leakypipes: Whyncha ping me when ready?
15:51:33 leakypipes fried_rice: yeah, thanks man
15:55:31 openstackgerrit Merged openstack/nova master: Ensure the JSON-Schema covers the legacy v2 API https://review.openstack.org/540154
16:02:59 bauwser meh, one day without being upstream
16:03:01 bauwser sad.
16:07:14 leakypipes fried_rice: https://etherpad.openstack.org/p/going-the-distance
16:07:57 leakypipes fried_rice: I'm ready when you are.
16:08:27 fried_rice leakypipes: Okay, we gonna go through this or should I pre-read?
16:08:43 edleafe fried_rice: it'll take an hour to read :)
16:09:06 leakypipes fried_rice, edleafe: please spend some time to read and then let's get on a hangout?
16:09:16 fried_rice finucannot, sean-k-mooney, edleafe, cfriesen: Heads up, we're gonna do this thing soon.
16:09:20 fried_rice leakypipes: Roger that.
16:09:41 edleafe leakypipes: can I clear the pink color?
16:11:05 leakypipes edleafe: yessir, absolutely.
16:11:20 edleafe ah, much easier on the eyes
16:11:31 fried_rice edleafe: You need to make it solarized now.
16:11:35 leakypipes edleafe: don't like the pepto-pink? :)
16:12:07 edleafe black on color == :(
16:12:41 edleafe ok, I think I have the gist of it
16:13:54 sean-k-mooney edleafe: actully black on colour is easier to read on paper then black on white if you have dislexia but on pcs not so much. thats why they make tinted glasses for peopel with dislexia
16:14:20 leakypipes sean-k-mooney: sense makes that me to.

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