SIG Scalability annual report 2022
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Wojciech Tyczyński
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1. What work did the SIG do this year that should be highlighted?
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-
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-
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-
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- We helped validating scalability and reliability impact of many features across whole year.
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- We extended scalability testing framework and built a number of new optional tests to
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cover other usecases (e.g. batch workloads)
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2. What initiatives are you working on that aren't being tracked in KEPs?
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-
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-
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-
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- Localized scalability/performance improvements across the codebase, e.g.:
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- Improved LIST calls performance for rare selectors
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- Optimizing kube-apiserver compression
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- Optimizing watch by reducing number of allocations
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- Improved kube-apiserver graceful shutdown
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- All the improvements to scalability test frameworks in [perf-tests]
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3. KEP work in 2022 (v1.24, v1.25, v1.26):
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- SIG Scalability doesn't own non-test code, so all below are officially
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tracked by other SIGs, but are driven (or co-driven) by SIG Scalability.
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- Stable
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- [1164 - Deprecate and Remove SelfLink](https://github.com/kubernetes/enhancements/tree/master/keps/sig-api-machinery/1164-remove-selflink) - 1.24
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- [1904 - Efficient Watch Resumption](https://github.com/kubernetes/enhancements/tree/master/keps/sig-api-machinery/1904-efficient-watch-resumption) - 1.24
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- Beta
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- [1040 - Priority and Fairness for API Server Requests](https://github.com/kubernetes/enhancements/blob/master/keps/sig-api-machinery/1040-priority-and-fairness/README.md) - 1.24, 1.25, 1.26
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- [1669 - Proxy Terminating Endpoints](https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/1669-proxy-terminating-endpoints/README.md) - 1.26
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- Alpha
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- [3453 - Minimize IPtables Restore](https://github.com/kubernetes/enhancements/tree/master/keps/sig-network/3453-minimize-iptables-restore)
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- Pre-alpha
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- [3157 - Watch List](https://github.com/kubernetes/enhancements/tree/master/keps/sig-api-machinery/3157-watch-list) - 1.26
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## Project health
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1. What areas and/or subprojects does your group need the most help with?
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Any areas with 2 or fewer OWNERs? (link to more details)
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-
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-
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-
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- Each SIG Scalability subproject could benefit from additional hands.
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However, the Scalability Test Frameworks and Scalability and Performance tests and validation
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are the ones with the lower barier to entry - see [perf-tests] repository.
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Other areas require both very deep and wide understanding of Kubernetes before making reasonable contributions.
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2. What metrics/community health stats does your group care about and/or measure?
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-
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-
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-
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- We care mostly about metrics for our main repository [perf-tests]. We measure them through [devstats]. We keep track of number of reviewers, opened issues and PRs merged.
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3. Does your [CONTRIBUTING.md] help **new** contributors engage with your group specifically by pointing
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to activities or programs that provide useful context or allow easy participation?
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-
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- Yes, [CONTRIBUTING.md] points to maintained list of issues with label `good first issue`.
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4. If your group has special training, requirements for reviewers/approvers, or processes beyond the general [contributor guide],
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does your [CONTRIBUTING.md] document those to help **existing** contributors grow throughout the [contributor ladder]?
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-
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- We don't have any special requirements for reviewers/approvers, but most of core areas of sig-scalability require
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very deep and wide understanding of the whole Kubernetes. It is much easier to start with our testing infrastructure.
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5. Does the group have contributors from multiple companies/affiliations?
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-
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- Yes, we have contributors from [multiple companies](https://k8s.devstats.cncf.io/d/8/company-statistics-by-repository-group?orgId=1&var-period=d7&var-metric=contributions&var-repogroup_name=SIG%20Scalability&var-repo_name=kubernetes%2Fkubernetes&var-companies=All&from=1641013200000&to=1672462800000).
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6. Are there ways end users/companies can contribute that they currently are not?
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If one of those ways is more full time support, what would they work on and why?
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-
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-
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- End users usually come with questions about scalability, they rarely want to contribute.
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- End user could also help us by providing and documenting their scalability needs to help us
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better define our goals.
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## Membership
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- Primary slack channel member count:
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- Primary mailing list member count:
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- Primary meeting attendee count (estimated, if needed):
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- Primary meeting participant count (estimated, if needed):
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- Unique reviewers for SIG-owned packages: <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
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- Unique approvers for SIG-owned packages: <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
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- Primary slack channel member count: 2299
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- Primary mailing list member count: 260
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- Primary meeting attendee count (estimated, if needed): 7
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- Primary meeting participant count (estimated, if needed): 5
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- Unique reviewers for SIG-owned packages: 6
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- Unique approvers for SIG-owned packages: 5
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Include any other ways you measure group membership
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## [Subprojects](https://git.k8s.io/community/sig-scalability#subprojects)
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**New in 2022:**
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- None
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**Retired in 2022:**
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- None
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**Continuing:**
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- kubernetes-scalability-and-performance-tests-and-validation
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- kubernetes-scalability-bottlenecks-detection
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- kubernetes-scalability-definition
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- kubernetes-scalability-governance
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- kubernetes-scalability-test-frameworks
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- [kubernetes-scalability-and-performance-tests-and-validation](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-and-performance-tests-and-validation)
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- [kubernetes-scalability-bottlenecks-detection](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-bottlenecks-detection)
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- [kubernetes-scalability-definition](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-definition)
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- [kubernetes-scalability-governance](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-governance)
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- [kubernetes-scalability-test-frameworks](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-test-frameworks)
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## [Working groups](https://git.k8s.io/community/sig-scalability#working-groups)
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@ -89,16 +107,16 @@ Include any other ways you measure group membership
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Operational tasks in [sig-governance.md]:
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- [ ] [README.md] reviewed for accuracy and updated if needed
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- [ ] [CONTRIBUTING.md] reviewed for accuracy and updated if needed
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- [x] [README.md] reviewed for accuracy and updated if needed
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- [x] [CONTRIBUTING.md] reviewed for accuracy and updated if needed
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(or created if missing and your contributor steps and experience are different or more
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in-depth than the documentation listed in the general [contributor guide] and [devel] folder.)
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- [ ] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed
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- [ ] SIG leaders (chairs, tech leads, and subproject owners) in [sigs.yaml] are accurate and active, and updated if needed
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- [x] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed
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- [x] SIG leaders (chairs, tech leads, and subproject owners) in [sigs.yaml] are accurate and active, and updated if needed
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- [ ] Meeting notes and recordings for 2022 are linked from [README.md] and updated/uploaded if needed
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- [ ] Did you have community-wide updates in 2022 (e.g. community meetings, kubecon, or kubernetes-dev@ emails)? Links to email, slides, or recordings:
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-
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- [x] Did you have community-wide updates in 2022 (e.g. community meetings, kubecon, or kubernetes-dev@ emails)? Links to email, slides, or recordings:
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- [Kubecon Valencia](https://kccnceu2022.sched.com/event/ytsB/intro-deep-dive-sig-scalability-marcel-zieba-wojciech-tyczynski-google)
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- [Kubecon Detroit](https://kccncna2022.sched.com/event/182Pr/intro-deep-dive-sig-scalability-marcel-zieba-google)
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[CONTRIBUTING.md]: https://git.k8s.io/community/sig-scalability/CONTRIBUTING.md
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[contributor ladder]: https://git.k8s.io/community/community-membership.md
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@ -107,3 +125,5 @@ Operational tasks in [sig-governance.md]:
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[sigs.yaml]: https://git.k8s.io/community/sigs.yaml
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[contributor guide]: https://git.k8s.io/community/contributors/guide/README.md
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[devel]: https://git.k8s.io/community/contributors/devel/README.md
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[devstats]: k8s.devstats.cncf.io/
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[perf-tests]: https://github.com/kubernetes/perf-tests/
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