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| ramishra | stevebaker: hey morning | 01:11 |
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| openstackgerrit | Merged openstack/heat: Add http_proxy_to_wsgi middleware to Heat CFN endpoint https://review.openstack.org/384314 | 01:31 |
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| stevebaker | ramishra: hi | 02:14 |
| ramishra | stevebaker: do you plan to add any more topics to the summit sessions etherpad? | 02:15 |
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| ramishra | stevebaker: also there is a topic proposed by DefCore team on tempest test candidated for interop testing. | 02:18 |
| stevebaker | ramishra: All I would suggest is that the defcore session become a little more general to cover heat_integrationtests and tempest | 02:18 |
| stevebaker | ramishra: other than that I've nothing to add. Have we used up our slots> | 02:19 |
| stevebaker | ? | 02:19 |
| ramishra | stevebaker: yes, we have 9 topics now to fill all the slots. | 02:19 |
| ramishra | :) | 02:19 |
| stevebaker | ramishra: DLM can be touched on in 3. | 02:20 |
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| ramishra | stevebaker: yeah we can, if we want | 02:21 |
| ramishra | I did some work with it. | 02:21 |
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| ramishra | But got stuck as we use the engine_id in the current to lock to know who is holding the lock | 02:21 |
| ramishra | for cancel_update stuff | 02:22 |
| ramishra | there is no way we can do that with solutions like tooz | 02:22 |
| ramishra | yeah, probably worth discussing | 02:22 |
| ramishra | yeah I'll change the last session to be more generic on integration testing and tempest stuff. | 02:23 |
| stevebaker | ramishra: definitely still cover defcore on that though | 02:23 |
| ramishra | sure | 02:24 |
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| -openstackstatus- NOTICE: Jobs running on osic nodes are failing due to network issues with the mirror. We are temporarily disabling the cloud. | 02:46 | |
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| openstackgerrit | Zane Bitter proposed openstack/heat: Avoid loading nested stacks in memory where possible https://review.openstack.org/384718 | 03:34 |
| openstackgerrit | Zane Bitter proposed openstack/heat: Use RPC to retrieve nested stack output https://review.openstack.org/383839 | 03:40 |
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| openstackgerrit | Mohankumar proposed openstack/heat: Add networking-sfc port-chain resource plug-in https://review.openstack.org/277940 | 07:20 |
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| therve | zaneb, I think the problematic changes in the nested patch is in the update path | 12:50 |
| therve | It breaks for a number of tests | 12:51 |
| therve | The ResourceChain one might be the easiest to track down | 12:52 |
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| zaneb | ok, about to start looking into it | 13:11 |
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| therve | zaneb, FWIW, I tested the patch. It made a small memory improvement, about 50M for 900 of RES | 13:17 |
| therve | Now the only nested stacks loading are from ResourceChain | 13:17 |
| therve | Which looks like it would be much harder to fix | 13:18 |
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| zaneb | what's special about ResourceChain? | 13:25 |
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| therve | Mostly just direct access to the resources in get_attributes | 13:33 |
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| zaneb | therve: so the legacy job timed out but the convergence job finished in 33m 27s !!! | 13:42 |
| therve | zaneb, Yeah we improved build time quite a bit recently | 13:43 |
| zaneb | ah, ok | 13:43 |
| therve | It also has a big variance :) | 13:44 |
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| therve | https://review.openstack.org/#/c/379109/ is one that improved I believe, it's hat 33:26 | 13:45 |
| therve | at | 13:45 |
| zaneb | yeah, might depend on which cloud the job runs on, or noisy neighbours | 13:45 |
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| zaneb | that makes sense, I was accidentally comparing to stuff from a few weeks ago | 13:45 |
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| tanvirt | zaneb: Could you expand on your last post for this change: https://review.openstack.org/#/c/378987/ | 13:56 |
| * zaneb looks | 13:56 | |
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| zaneb | tanvirt: in the tests, you need to provide a mock for the RPC call otherwise it will try to do actual RPC and fail | 13:57 |
| tanvirt | zaneb: ah ok, thanks | 13:58 |
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| openstackgerrit | Ana Krivokapic proposed openstack/heat: Add a modulo core constraint https://review.openstack.org/350116 | 14:55 |
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| openstackgerrit | Oleksii Chuprykov proposed openstack/heat: Validate outputs of the stack after its create/update https://review.openstack.org/371704 | 14:58 |
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| openstackgerrit | Merged openstack/heat-templates: A hook which invokes os-apply-config. https://review.openstack.org/350553 | 15:07 |
| openstackgerrit | Merged openstack/heat-templates: A hook which writes hiera datafiles. https://review.openstack.org/379733 | 15:07 |
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| openstackgerrit | boden proposed openstack/heat: Replace retrying with tenacity https://review.openstack.org/367638 | 17:33 |
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| openstackgerrit | Crag Wolfe proposed openstack/heat: Do not copy original maps in map_merge https://review.openstack.org/385111 | 17:54 |
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| openstackgerrit | Zane Bitter proposed openstack/heat: Avoid loading nested stacks in memory where possible https://review.openstack.org/384718 | 19:39 |
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| stevebaker | morning | 19:52 |
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| therve | zaneb, I'm somewhat out of ideas for memory usage. We're back at the level of early newton from what shardy's measured, so it's better than nothing. | 20:11 |
| therve | Next step may be to look at tht and see if we can change some things there | 20:11 |
| zaneb | therve: yeah, if I can get the no-nested()-loading thing working then the outputs-over-rpc thing is pretty much the last idea I have | 20:12 |
| therve | zaneb, Cool. It has a minimal impact, but it always help a bit | 20:13 |
| therve | Then we need to backport those, but that should be straightforward | 20:14 |
| zaneb | that's disappointing, because it ought to have a major impact. I wonder what's going on | 20:14 |
| therve | Well ResourceChain isn't fixed yet, that may be the reason | 20:14 |
| therve | It's used quite a bit in tht | 20:14 |
| therve | I wonder what the point of using ResourceChain in tripleo, especially when concurrent is True | 20:16 |
| zaneb | because it relies on grouputils? | 20:16 |
| therve | Yes | 20:17 |
| zaneb | gotcha | 20:17 |
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| zaneb | the point is to save them from repeating the same configuration for multiple resources | 20:17 |
| zaneb | because they won't use template generation | 20:17 |
| zaneb | although I see they now use jinja anyway | 20:18 |
| therve | Yeah I was going to say | 20:18 |
| therve | Maybe now it can be removed | 20:18 |
| therve | It's not used "quite a bit", in fact it's only used for one type of resource, maybe it can be excised easily | 20:19 |
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| therve | If we can turn those chains into regular nested stacks, that may improve things quite a bit again | 20:23 |
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| stevebaker | therve, zaneb: have you seen my comment? https://bugs.launchpad.net/heat/+bug/1626675/comments/41 | 20:33 |
| openstack | Launchpad bug 1626675 in heat "Further memory usage issues with big stacks" [Critical,In progress] - Assigned to Zane Bitter (zaneb) | 20:33 |
| zaneb | stevebaker: yes and I was appalled ;) | 20:34 |
| stevebaker | lol | 20:34 |
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| stevebaker | zaneb: presumably appalled at pythons inability to return memory to the OS? | 20:34 |
| zaneb | but yeah, that may be all that we can do now | 20:34 |
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| therve | stevebaker, Most of the work happens in one worker currently | 20:35 |
| therve | And it's the main culprit for memory usage | 20:35 |
| therve | Maybe switching to convergence can help tripleo though | 20:35 |
| stevebaker | therve: sure, its generally one worker whose memory explodes, but they all grow and never shrink, and its the undercloud which is resource constrained | 20:36 |
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| therve | stevebaker, Sure, but the high mark is still too high because we hold on to too many objects at once | 20:37 |
| stevebaker | right | 20:37 |
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| therve | (Also if we start to restart workers we need to think about cleaning up rabbitmq queues) | 20:40 |
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| stevebaker | therve: that may explain why my rabbit gets OOMed after repeated tests ;) | 20:46 |
| therve | Yeah... | 20:47 |
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| openstackgerrit | Zane Bitter proposed openstack/heat: Use RPC to retrieve nested stack output https://review.openstack.org/383839 | 22:06 |
| openstackgerrit | Zane Bitter proposed openstack/heat: Avoid loading nested stacks in memory where possible https://review.openstack.org/384718 | 22:06 |
| openstackgerrit | Zane Bitter proposed openstack/heat: Keep same physical_resource_name in backup stack https://review.openstack.org/385176 | 22:06 |
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