# 2021 Annual Report: SIG Scalability ## Current initiatives 1. What work did the SIG do this year that should be highlighted? - We helped validating scalability and reliability impact of many features across whole year. - We have started testing scalability of large services (1000+ pods). 2. What initiatives are you working on that aren't being tracked in KEPs? - We've improved testing framework and infrastructure, for example: - Added support for modules in our tests - Started measuring availability of api-server - Added support for measuring cilium propagation delay, dns latency 3. KEP work in 2021: - Stable - None - Beta - [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) - 1.23 - Alpha - [647 - APIServer Tracing](https://github.com/kubernetes/enhancements/blob/master/keps/sig-instrumentation/647-apiserver-tracing/README.md) - 1.22 - [1669 - Proxy Terminating Endpoints](https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/1669-proxy-terminating-endpoints/README.md) - 1.22 - [2464 - Kubetest2 CI Migration](https://github.com/kubernetes/enhancements/blob/master/keps/sig-testing/2464-kubetest2-ci-migration/README.md) - 1.21 - Pre-alpha - None ## Project health 1. What areas and/or subprojects does your group need the most help with? Any areas with 2 or fewer OWNERs? (link to more details) - Each subproject could benefit from additional hands. However, the Scalability Test Frameworks and Scalability and Performance tests and validation are the ones where we can grow contributors - the other require both very deep and wide understanding of Kubernetes before making reasonable contributions. 2. What metrics/community health stats does your group care about and/or measure? - 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. 3. Does your [CONTRIBUTING.md] help **new** contributors engage with your group specifically by pointing to activities or programs that provide useful context or allow easy participation? - Yes, [CONTRIBUTING.md] points to maintained list of issues with label `good first issue`. 4. If your group has special training, requirements for reviewers/approvers, or processes beyond the general [contributor guide], does your [CONTRIBUTING.md] document those to help **existing** contributors grow throughout the [contributor ladder]? - We don't have any special requirements for reviewers/approvers, but most of core areas of sig-scalability required deep and wide understanding of Kubernetes. 5. Does the group have contributors from multiple companies/affiliations? - 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=1609477200000&to=1640926800000). 6. Are there ways end users/companies can contribute that they currently are not? If one of those ways is more full time support, what would they work on and why? - End users usually come with questions about scalability, they rarely want to contribute. ## Membership - Primary slack channel member count: 2029 - Primary mailing list member count: 236 - Primary meeting attendee count (estimated, if needed): 5 - Primary meeting participant count (estimated, if needed): 4 - Unique reviewers for SIG-owned packages: 6 - Unique approvers for SIG-owned packages: 5 Include any other ways you measure group membership ## Subprojects New in 2021: - None Retired in 2021: - None Continuing: - [kubernetes-scalability-and-performance-tests-and-validation](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-and-performance-tests-and-validation) - [kubernetes-scalability-bottlenecks-detection](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-bottlenecks-detection) - [kubernetes-scalability-definition](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-definition) - [kubernetes-scalability-governance](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-governance) - [kubernetes-scalability-test-frameworks](https://git.k8s.io/community/sig-scalability#kubernetes-scalability-test-frameworks) ## Working groups New in 2021: - None Retired in 2021: - None Continuing: - [WG Reliability](https://git.k8s.io/community/wg-reliability/) ([2021 report](https://github.com/kubernetes/community/blob/master/wg-reliability/annual-report-2021.md)) ## Operational Operational tasks in [sig-governance.md]: - [x] [README.md] reviewed for accuracy and updated if needed - [x] [CONTRIBUTING.md] reviewed for accuracy and updated if needed (or created if missing and your contributor steps and experience are different or more in-depth than the documentation listed in the general [contributor guide] and [devel] folder.) - [x] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed - [x] SIG leaders (chairs, tech leads, and subproject owners) in [sigs.yaml] are accurate and active, and updated if needed - [x] Meeting notes and recordings for 2021 are linked from [README.md] and updated/uploaded if needed - [x] Did you have community-wide updates in 2021 (e.g. community meetings, kubecon, or kubernetes-dev@ emails)? Links to email, slides, or recordings: - [Kubecon NA 2021](https://www.youtube.com/watch?v=sEdSoWslQ6A) [CONTRIBUTING.md]: https://git.k8s.io/community/sig-scalability/CONTRIBUTING.md [contributor ladder]: https://git.k8s.io/community/community-membership.md [sig-governance.md]: https://git.k8s.io/community/committee-steering/governance/sig-governance.md [README.md]: https://git.k8s.io/community/sig-scalability/README.md [sigs.yaml]: https://git.k8s.io/community/sigs.yaml [contributor guide]: https://git.k8s.io/community/contributors/guide/README.md [devel]: https://git.k8s.io/community/contributors/devel/README.md [perf-tests]: https://github.com/kubernetes/perf-tests [devstats]: k8s.devstats.cncf.io/