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#openstack-nova - 2020-02-05
18:10:55 sean-k-mooney well normally if we had more time its something that we would help to do. its almost the feature proposal deadline so it will need to be approve this week or next so i can help a little more then normal
18:12:17 umbSublime There a few few "newcoming contributer" docs out there for OS, but is there one more specific to nova I should up on ?
18:12:57 sean-k-mooney we do have a nova one im not sure if it differe much form the generic one let me see if i can find it
18:14:01 sean-k-mooney umbSublime: they are here https://docs.openstack.org/nova/latest/contributor/index.html
18:14:13 umbSublime \o/
18:15:33 sean-k-mooney umbSublime: you might find this one useful https://docs.openstack.org/nova/latest/contributor/how-to-get-involved.html
18:16:14 umbSublime I'll try and get up to speed on this tonight
18:38:41 openstackgerrit Merged openstack/nova master: nova-net: Remove now unnecessary nova-net workaround https://review.opendev.org/702440
18:49:39 openstackgerrit Eric Fried proposed openstack/nova master: WIP: refactor: Do network & accel discovery near volumes https://review.opendev.org/706083
18:49:53 efried dansmith: Does that ^ refactor look like what you had in mind?
18:51:21 dansmith efried: from a skim, yeah
18:52:58 efried dansmith: If so, my main objections to the preceding patch are addressed. The other bits I noted are still worth doing, but could conceivably be FUP'd if there's motivation not to respin the series.
18:53:16 dansmith ack
20:07:00 openstackgerrit Mykola Yakovliev proposed openstack/nova master: Fix boot_roles in InstanceSystemMetadata https://review.opendev.org/698040
20:33:24 sean-k-mooney umbSublime: i have updated https://etherpad.openstack.org/p/invtsc with what i think woudl be sufficent for the blueprint.
20:34:20 sean-k-mooney umbSublime: i have not spellchecked it and as efried will attest that is likely required.
20:35:05 sean-k-mooney ill add this to the end of the nova meeting agendra for tomorrow but if you are happy with the content can you update the blueprint.
20:49:43 umbSublime sean-k-mooney, thanks! I did a first pass on spellcheck. I think I'll wait until tomorrow to post it in case I think of something to add in the meantime
20:55:18 sean-k-mooney umbSublime: ya if you want to reframe the problem statement etc feel free
21:19:10 spatel sean-k-mooney: hey
21:20:21 spatel I am seeing strange performance issue, I am running erlang application on openstack instance which is giving me very poor performance but if i run same application on bare metal performance is really good
21:21:01 spatel I have created big VM and allocated all vCPU to instance so only single VM running on compute node..
21:21:17 spatel trying to understand where is the bottleneck
21:31:36 openstackgerrit Stephen Finucane proposed openstack/nova master: trivial: Fetch 'Service' objects once when building AZs https://review.opendev.org/705653
21:31:37 openstackgerrit Stephen Finucane proposed openstack/nova master: trivial: Bump minimum version of websockify https://review.opendev.org/705654
21:31:37 openstackgerrit Stephen Finucane proposed openstack/nova master: trivial: Merge unnecessary 'NovaProxyRequestHandlerBase' separation https://review.opendev.org/705655
21:31:38 openstackgerrit Stephen Finucane proposed openstack/nova master: trivial: Remove 'run_once' helper https://review.opendev.org/705656
21:31:38 openstackgerrit Stephen Finucane proposed openstack/nova master: tox: Integrate mypy https://review.opendev.org/676208
21:31:39 openstackgerrit Stephen Finucane proposed openstack/nova master: mypy: Add type annotations to 'nova.pci' https://review.opendev.org/676209
21:31:39 openstackgerrit Stephen Finucane proposed openstack/nova master: mypy: Add nova.cmd, nova.conf, nova.console https://review.opendev.org/705657
21:31:40 openstackgerrit Stephen Finucane proposed openstack/nova master: WIP: mypy: Add type annotations to top-level modules https://review.opendev.org/705658
21:32:42 sean-k-mooney spatel: erlang is pretty memory sensitive so using hugepages in the gust and likely on the host for the vm should help
21:33:20 sean-k-mooney spatel: you shoudl also look into http://erlang.org/doc/man/HiPE_app.html
21:35:15 openstackgerrit Merged openstack/nova master: Handle neutron without the fip-port-details extension https://review.opendev.org/705760
21:38:42 spatel sean-k-mooney: i am using hugepage
21:38:52 spatel I have tried all possible best practices
21:39:56 spatel earlier i gave all CPU to vm (32 core) so thinking i should just create VM with 16 vCPU so it stay one side of NUMA zone to see how its performing..
21:42:30 sean-k-mooney ya numa affinitising the vm might help or create a dual numa guest
21:42:56 sean-k-mooney that would report the numa affintiy to erlang but if you are using hugepags it has a numa toplogy of 1 already
21:43:03 spatel I am only curious if i run same benchmark on bare metal then i get good result but if i run on VM then it gives poor result
21:43:16 sean-k-mooney what it could be is the cpu model
21:43:34 sean-k-mooney if you are not useing host-passthouhg you might not have all the cpu feature in the vm that you have in the host
21:43:36 spatel my CPU mode is passthrough
21:43:58 sean-k-mooney well if you have it numa affined and cpu passthohg
21:44:03 sean-k-mooney are you using cpu pinning
21:44:06 spatel Yes
21:44:11 spatel CPU pinning
21:44:27 sean-k-mooney then the only bottelnecs you have left are disk io or netwrok
21:44:52 sean-k-mooney what disk cache mode are you using
21:44:53 spatel I am using SR-IOV and not seeing any single packetloss or performance issue on network layer
21:45:08 spatel We have SSD
21:45:15 spatel not sure about disk cache mode?
21:45:47 sean-k-mooney https://docs.openstack.org/nova/latest/configuration/config.html#libvirt.disk_cachemodes
21:46:08 spatel I have noticed in SS command lost of packet getting in queue and increasing latency
21:46:29 sean-k-mooney file=writeback,block=writeback,network=writeback would be the highest performace setting in most cases
21:48:06 spatel hmm
21:48:27 spatel I will try that too
21:48:50 spatel is that kvm setting ?
21:49:34 sean-k-mooney ya its a setting for the libvirt dirver
21:49:38 spatel I have flavor setting numa_node=2
21:49:41 sean-k-mooney so in the [libvirt] section
21:49:58 spatel ok.. i will give it a try and see if that make any difference
21:50:22 spatel tomorrow i am going to run more erlang test and see where is the bottleneck.. i will keep you posted..
22:26:05 openstackgerrit Ghanshyam Mann proposed openstack/nova master: Deprecate base rules in favor of new rules https://review.opendev.org/701624
22:26:31 openstackgerrit Ghanshyam Mann proposed openstack/nova master: Fix os-attach-interfaces policy to be admin_or_owner https://review.opendev.org/705135
22:26:44 openstackgerrit Ghanshyam Mann proposed openstack/nova master: Remove old policy enforcement in attach_interfaces https://review.opendev.org/705127
22:26:57 openstackgerrit Ghanshyam Mann proposed openstack/nova master: Add test coverage of existing attach_interfaces policies https://review.opendev.org/705126
22:27:10 openstackgerrit Ghanshyam Mann proposed openstack/nova master: Introduce scope_types in os-attach-interfaces https://review.opendev.org/705799
22:44:25 efried gibi: stephenfin, other: how many people were in the room at the Shanghai PTG?
23:36:01 alex_xu efried: 20 maybe
#openstack-nova - 2020-02-06
00:44:19 efried Thanks alex_xu
03:00:28 openstackgerrit Merged openstack/nova master: Revert "nova shared storage: rbd is always shared storage" https://review.opendev.org/682523
03:38:39 openstackgerrit Qiu Fossen proposed openstack/nova-specs master: specify mac for creating instance https://review.opendev.org/700429
05:16:14 openstackgerrit Brin Zhang proposed openstack/nova master: Add SYSTEM_READER role to server actions API https://review.opendev.org/706179
06:50:59 openstackgerrit Merged openstack/nova master: Avoid calling neutron for N networks https://review.opendev.org/705784
07:02:33 openstackgerrit Brin Zhang proposed openstack/nova master: Add SYSTEM_READER role to servers actions API https://review.opendev.org/706179
07:53:36 gibi efried: yeah max 20 I t was more on the 12 - 15 side in my memory
07:54:45 gibi efried, dansmith: I was avoiding cyborg integration code recently as I saw that both of you are actively handled that but now I feel you want me to read in. I hope I will not blow up things with my fresh oppinion
08:04:09 openstackgerrit Brin Zhang proposed openstack/nova master: Expose instance action event details out of the API https://review.opendev.org/694430
09:30:56 ralonsoh stephenfin, sorry for bothering you again...
09:30:57 ralonsoh https://review.opendev.org/#/c/705760/2/nova/network/neutron.py@2615
09:31:12 ralonsoh I didn't realize this when I reviewed the patch
09:31:32 ralonsoh but a FIP can NOT be attached to a port
09:32:35 ralonsoh so this exception... is unnecessary. Actually we are still having some problems in the Neutron OVN CI
09:32:35 ralonsoh https://7147d7e07a0a4e67ee4e-8dbb68c995c97f9fb5b4258bb26a4c49.ssl.cf2.rackcdn.com/703537/7/check/neutron-ovn-tempest-ovs-release/7b55444/testr_results.html
09:32:48 stephenfin damn. okay, let me fix that up
09:33:22 ralonsoh stephenfin, let me first check the test
09:33:33 ralonsoh I would like to confirm that in the logs
09:39:08 ralonsoh stephenfin, https://7147d7e07a0a4e67ee4e-8dbb68c995c97f9fb5b4258bb26a4c49.ssl.cf2.rackcdn.com/703537/7/check/neutron-ovn-tempest-ovs-release/7b55444/controller/logs/screen-n-api.txt
09:39:27 ralonsoh we are creating IPs without any port associated
10:05:57 stephenfin ralonsoh: What happens if I do 'list_ports(ids=['foo'])' and 'foo' doesn't exist?
10:06:16 openstackgerrit Stephen Finucane proposed openstack/nova master: Don't error out on floating IPs without associated ports https://review.opendev.org/706213
10:06:19 stephenfin I assume I'll just get an empty response, i.e. {'ports': []}
10:06:34 stephenfin ralonsoh, gibi: That's the fix, btw ^
10:08:19 ralonsoh stephenfin, yes, you have an empty list
10:08:33 ralonsoh show_port will return an exception
10:08:39 ralonsoh list_ports don't
10:08:50 stephenfin cool, that's what I'd assumed in that patch
10:16:51 openstackgerrit Stephen Finucane proposed openstack/nova master: Rework how we check for extensions https://review.opendev.org/705792
11:09:01 openstackgerrit Lee Yarwood proposed openstack/nova master: libvirt: Rename _is_storage_shared_with to _is_path_shared_with https://review.opendev.org/693337

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