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| openstackgerrit | Merged openstack/ceilometer: drop magnetodb support https://review.openstack.org/301245 | 05:04 |
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| openstackgerrit | Eyal proposed openstack/aodh: use set literal where possible https://review.openstack.org/301449 | 05:43 |
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| openstackgerrit | Merged openstack/python-aodhclient: Use pifpaf to setup tests https://review.openstack.org/297789 | 06:28 |
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| openstackgerrit | Eyal proposed openstack/python-gnocchiclient: Remove redundant parentheses https://review.openstack.org/301473 | 06:40 |
| openstackgerrit | Merged openstack/ceilometer: publisher: clean out context usage https://review.openstack.org/300354 | 06:52 |
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| openstackgerrit | Julien Danjou proposed openstack/gnocchi: carbonara: catch LockAcquireFailed exception https://review.openstack.org/301285 | 09:31 |
| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Enable CORS by default https://review.openstack.org/290429 | 09:32 |
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| openstackgerrit | Julien Danjou proposed openstack/python-gnocchiclient: Use pifpaf instead of overtest to run tests https://review.openstack.org/301553 | 10:15 |
| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Enable CORS by default https://review.openstack.org/290429 | 10:28 |
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| openstackgerrit | Mehdi Abaakouk (sileht) proposed openstack/gnocchi: tests: tempest plugin https://review.openstack.org/301585 | 11:09 |
| openstackgerrit | Mehdi Abaakouk (sileht) proposed openstack/gnocchi: tests: tempest plugin https://review.openstack.org/301585 | 11:12 |
| openstackgerrit | Mehdi Abaakouk (sileht) proposed openstack/gnocchi: tests: tempest plugin https://review.openstack.org/301585 | 11:13 |
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| cdent | sileht: thank you _so_ much for doing that tempest+gabbi stuff. has given me all kinds of ideas. | 11:23 |
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| openstackgerrit | Julien Danjou proposed openstack/python-gnocchiclient: Use pifpaf instead of overtest to run tests https://review.openstack.org/301553 | 12:03 |
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| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Use pbr WSGI feature to build gnocchi-api https://review.openstack.org/301611 | 12:25 |
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| openstackgerrit | Julien Danjou proposed openstack/python-aodhclient: Remove keystonemiddleware dependency https://review.openstack.org/300450 | 13:01 |
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| openstackgerrit | Merged openstack/gnocchi: carbonara: catch LockAcquireFailed exception https://review.openstack.org/301285 | 14:04 |
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| jd__ | Apr 5 15:56:28 localhost kernel: gnocchi-metricd[1528423]: segfault at 0 ip 00007f4fa8ec246e sp 00007ffc560e93c0 error 4 in hashtable.so[7f4fa8e93000+52000] | 14:13 |
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| jd__ | I guess 700k bundles of measures is too much | 14:13 |
| jd__ | :] | 14:13 |
| gordc | jd__: you performance testing? | 14:15 |
| jd__ | yes | 14:15 |
| gordc | i should probably tell you, i haven't done anything since the lab i'm suppose to have is 4months delayed | 14:15 |
| gordc | how's your tests going so far? | 14:16 |
| nicodemus_ | jd__, if it helps... I've had up to 80k backlog with no segfault nor OOM issues with 2.0.1.dev1 and .dev43 | 14:17 |
| jd__ | gordc: pretty good, I redid some benchmarks of the API it's even a bit faster, I manage to send up to 190k metric/s | 14:17 |
| jd__ | nicodemus_: yeah mine is 700k bundles and the size of a bundle is between 1 and 5k points so… I guess that's 2 or 3 M points, probably too much at this point | 14:18 |
| jd__ | though it's not a realistic usage | 14:18 |
| jd__ | I precise: 3 M points on _1_ metric lol | 14:18 |
| jd__ | that's what it crashed | 14:18 |
| jd__ | s/what/why/ | 14:18 |
| gordc | i wonder how it performs with many metrics. i think that's the slower route right now. | 14:19 |
| nicodemus_ | jd__, looks like when we had 6,5M backlog lol | 14:19 |
| jd__ | nicodemus_: if it's on a few thousands different metric that should work fine | 14:20 |
| jd__ | gordc: yeah I'll try that I guess | 14:20 |
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| nicodemus_ | One question... what could cause to have N unprocessed measures that gnocchi-metricd acknowledges but don't process? (with 2.0.1.dev1 and 2.0.1.dev46) | 14:45 |
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| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Use pbr WSGI feature to build gnocchi-api https://review.openstack.org/301611 | 14:58 |
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| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Use pbr WSGI feature to build gnocchi-api https://review.openstack.org/301611 | 15:06 |
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| openstackgerrit | Merged openstack/python-ceilometerclient: Fix the disorder of items of Traits in the output of event-list https://review.openstack.org/294999 | 15:28 |
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| openstackgerrit | Merged openstack/gnocchi: Fix --version string on all command line tools https://review.openstack.org/300522 | 15:49 |
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| jd__ | nicodemus_: nothing in theory | 16:02 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: change keystone to openstack cli https://review.openstack.org/301796 | 16:03 |
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| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Use pbr WSGI feature to build gnocchi-api https://review.openstack.org/301611 | 17:28 |
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| openstackgerrit | Julien Danjou proposed openstack/aodh: Use pbr wsgi_scripts to build aodh-api https://review.openstack.org/301850 | 17:52 |
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| openstackgerrit | gordon chung proposed openstack/ceilometer: add ceilometer to gnocchi configuration notes https://review.openstack.org/301865 | 18:38 |
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| openstackgerrit | Julien Danjou proposed openstack/aodh: Use pbr wsgi_scripts to build aodh-api https://review.openstack.org/301850 | 19:14 |
| openstackgerrit | Julien Danjou proposed openstack/gnocchi: Use pbr WSGI feature to build gnocchi-api https://review.openstack.org/301611 | 19:16 |
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| openstackgerrit | gordon chung proposed openstack/ceilometer: add ceilometer to gnocchi configuration notes https://review.openstack.org/301865 | 19:58 |
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| marcin12345 | hey guys, I have realized that they way Gnocchi works with Swift is writing measures to a temporary container called "measure", then metricd is picking those up dong its aggregation and writing to different containers per resource updating objects in it (none, mean, max, min etc.) | 21:44 |
| marcin12345 | the problem with this design is that container "measure" is a bottleneck, because more controllers you have they all write to the same swift container, making it not very scalable horizontally | 21:45 |
| gordc | marcin12345: yep, that's pretty much how it works | 21:45 |
| marcin12345 | I may be wrong, but my got felling is that it would make sense to keep contant of "measure" on some temporary disk (maybe ramdisk) locally to Gnocchi worker on the same host, what do you thinl? | 21:46 |
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| gordc | marcin12345: the reason it's global currently is so we can process related datapoints together. one issue with storing locally is that now if we have meeasures in two locations, we need to process (resample data) twice, instead of once. | 21:48 |
| marcin12345 | the problem I have is with only 20 VMs, and collecting measures every 30 seconds from only one compute, Swift cannot keep up updating its metadata even with ssds | 21:48 |
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| gordc | not saying the current way is perfect. but plus/minuses either way. | 21:49 |
| marcin12345 | how come you could have measures on 2 locations (servers), if the process that collected it, is running on the same server that metricd, it should be no issue | 21:49 |
| gordc | is the issue with writing to temporary store or processing from temporary store? | 21:49 |
| marcin12345 | problem is with Swift not being able to update Sqlite metadata information about objects, that are so small and tiny - so problem is with writing | 21:51 |
| gordc | in theory, if you have a very high frequency metric, your first sample could be received and (temp) stored in gnocchi, and a second sample be received and again (temp) stored in gnocchi before the first one is processed | 21:51 |
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| gordc | in current design, both points will be processed together in one go. while if we split it, it may be done separately (although there's proabbly ways to batch measures still) | 21:52 |
| gordc | marcin12345: so as you mentioned there's two stages of writing, the temp and aggregated locations. is the backlog on api not accepting from ceilometer collector fast enough, or is the backlog on metricd processing? | 21:54 |
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| marcin12345 | so as far as Gnocchi and Ceilometer is concern it sends data out with PUT to swift just fine no problems there | 21:55 |
| marcin12345 | but once you looks what Swift is doing is throwing those errors at a time of writing | 21:56 |
| gordc | marcin12345: yeah, the swift backend is probably the weakest of the lot | 21:56 |
| marcin12345 | maybe there should be change on policy for Gnocchi in Swift | 21:56 |
| marcin12345 | but unsure to what | 21:56 |
| marcin12345 | how come Ceph does not have this problem? | 21:57 |
| marcin12345 | I mean, I am assuming it doe snot | 21:57 |
| gordc | i'm not entirely sure if all the errors are invalid but i know a good chunk of them are. swift just logs any non 200 as an error, even if it's expected (it's expected in ceilometer+gnocchi case) | 21:57 |
| gordc | .. _Aodh: http://docs.openstack.org/developer/aodh/ | 21:58 |
| gordc | whoops: this bug is one reason https://bugs.launchpad.net/gnocchi/+bug/1554759 | 21:58 |
| openstack | Launchpad bug 1554759 in Gnocchi "swiftclient 404 errors on new metric" [High,Triaged] | 21:58 |
| gordc | also this https://bugs.launchpad.net/gnocchi/+bug/1554739 | 21:58 |
| openstack | Launchpad bug 1554739 in Gnocchi "json decode errors thrown by swift driver" [High,Triaged] | 21:58 |
| gordc | both bugs are arguably on swift's end. | 21:59 |
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| marcin12345 | do you guys have any idea how Ceph is handling this problem? | 22:10 |
| gordc | marcin12345: the json problem i have no idea why swift is throwing it. it's a bug either in swift or the client | 22:11 |
| gordc | the 404 errors is a swiftclient bug https://bugs.launchpad.net/python-swiftclient/+bug/1213179 | 22:12 |
| openstack | Launchpad bug 1213179 in python-swiftclient "swiftclient logs all ClientException (404) at ERROR (with traceback)" [High,Confirmed] | 22:12 |
| gordc | imo, the client should not be deciding what an error is and shouldn't have it's own logging for it. | 22:12 |
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| gordc | in ceph and file backend, if something doesn't exists, it raises it and let's gnocchi handle it. | 22:13 |
| gordc | in swift, if something doesn't eixst, they catch it, spew logs, and some other stuff. | 22:13 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: remove redundant info from devstack install https://review.openstack.org/301949 | 22:14 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: delete verbose/redundant/deprecated text https://review.openstack.org/301950 | 22:14 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: delete verbose/redundant/deprecated text https://review.openstack.org/301949 | 22:16 |
| gordc | marcin12345: i think we can look to see how we can better handle processing with metricd service... will brainstorm for summit. | 22:18 |
| gordc | going to drop. feel free to raise more issues to ML or here | 22:19 |
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| openstackgerrit | Dmitriy Ukhlov proposed openstack/ceilometer: Fixes ceilo after oslo.messaging refactoring https://review.openstack.org/301953 | 22:23 |
| openstackgerrit | Mehdi Abaakouk (sileht) proposed openstack/gnocchi: tests: tempest plugin https://review.openstack.org/301585 | 22:38 |
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| openstackgerrit | Mehdi Abaakouk (sileht) proposed openstack/gnocchi: tests: tempest plugin https://review.openstack.org/301585 | 22:46 |
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| marcin12345 | What is the biggest deployment Ceilometer/Gnocchi has ever been tested? | 23:03 |
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| NotMyNameEither | Hi! We are currently evaluating Gnocchi, for a potential deployment in our production environment (4000 instances/Gnocchi site). We were wondering if Gnocchi was ever tested at this scale yet? With which storage drivers? | 23:18 |
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| openstackgerrit | gordon chung proposed openstack/ceilometer: re-org existing manually install notes https://review.openstack.org/301321 | 23:40 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: change keystone to openstack cli https://review.openstack.org/301796 | 23:41 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: add ceilometer to gnocchi configuration notes https://review.openstack.org/301865 | 23:41 |
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| openstackgerrit | gordon chung proposed openstack/ceilometer: add ceilometer to gnocchi configuration notes https://review.openstack.org/301865 | 23:55 |
| openstackgerrit | gordon chung proposed openstack/ceilometer: delete verbose/redundant/deprecated text https://review.openstack.org/301949 | 23:55 |
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