Alcor v0.19 Release Plan

Open-Source Plan for v0.19 Release

Tentative date: 09/30/2021

Release: Alcor v0.19

Release link: TBD

Alcor Performance & Scalability

• OpenStack Cross-Service Request-Level Profiling
  • Environment Setup
    • Set up OpenStack cluster with kolla-ansible, and enable OSProfiler and Rally
    • Set up Alcor Controller service with K8s
    • Set up ElasticSearch search and analytics cluster in Alcor's k8s deployment
    • Set up SIG storage local cluster
    • Upgrade Rally version in Medina perf test cluster
    • Upgrade OSProfiler version in Medina perf test cluster (Nova, KeyStone, Cinder, Glance)
    • Install Jaeger in Medina perf test cluster
  • Use Jaeger's openstracing features in Alcor
    • Service level tracing support
    • Function level tracing support
    • Pass trace from PM to DPM
  • Tool and script development
    • Containerized ACA to replace Neutron-OpenvSwitch-agent container in kolla-ansible
    • Enable OSProfiler for Nova neutron client
    • OSProfiler to Jaeger trace convertor (moved to 12/30)
• Run Alcor performance test via Rally
  • v0.17 perf test plan
  • Routing rule update new scenario E2E
    • Write new Rally plugin and test configuration for routing rule update
    • Customize Python Neutron client to support update/delete subnet route table
    • Run new Rally test create-and-list-routers for L3 testing
  • Consolidate Rally test script to run all test at once
  • Fix existing Rally test cases and Alcor bugs
    • Router-related resource cleanup issue
    • Issue 646: Add a flag to getOrCreateVpcRouter to allow customize router creation
    • Separate Neutron and VPC router scenarios for getSubnetRouteTable
    • Issue 648: Allow to delete subnet w/o a gateway port
    • Issue 654: Separate RM getOrCreateSubnetRouteTable into two APIs and consolidate POST with createNeutronSubnetRouteTable
    • Issue 656: Routing entry concurrent insertion can't be handled by RM (fixed in PR 658)
    • PR 661: Fix gateway port duplicated creation issue
    • Issue 662: Fix race condition in subnet deletion API (fixed in PR 663)
    • Issue 666: Ip address allocation not found, 404 error by IP manager (Under Test)
    • Issue 667: 412 Precondition Failed Ip address conflict with exist (Under Test)
    • Issue 668: Fix handling of failed compute node in DPM
    • Regression Fix: Allow empty routing table when creating router state
• On-demand perf profiling with test controller
  • Latency measurement on on-demand E2E
  • Ignite R/W optimization
    • NCM to Ignite profiling and latency data collection for both goal state provisioning and on-demand requests
    • NCM cache write optimization
    • Batch cache write
  • NCM-ACA communication channel optimization
    • On-demand Query Channel optimization
      • ACA async gRPC client for unblocking on-demand calls
      • ACA intelligent thread sleep for pushed GS
    • GoalState Push Channel optimization
      • NCM gRPC client: gRPC channel/stub pool and keepalive for channels
      • Comparing performance for synchronous and asynchronous gRPC servers on ACA
      • ACA Async gRPC server and thread pool implementation
      • gRPC channel warm-up
      • ACA adjustable thread pool size based on host core number (stretch goal)
      • Host ip lookup optimization
      • Change from shared completion queue to one completion queue (stretch goal)
    • Performance report for channel optimization
  • Fix ACA crash issue when concurrently processing a large number of GoalStates
• Alcor Control Agent major refactor for ultimate performance
  • ACA perf profiling for aca/ovs interaction improvement
    • perf profiling for new channel mechanism of ovs connection/flows
  • Flow table installation latency improvement
  • Driver communication layer that exchanges commands and events with ovs
    • lib-fluid library (for connection control) importing and wrapper migration
    • openvswitch library (for flow control) importing and wrapper migration
    • integration with existing ovs control based on vconn
    • support of normal flow operations (add/mod/del etc.)
    • support of advanced feature of bundling (requires OF1.4 and above)
    • integration with on-demand-engine monitor and packet-out mechanism for dhcp and arp (on-demand)
  • Integration with Alcor test pipeline
    • TC testing
    • Kolla-ansible testing
    • Jenkins testing
  • Coding style alignment across ACA codes

New Features Development

• Feature E2E Integration
  • Routing rule update new scenario E2E
    • RM supports routing rule update
    • DPM v2.0 supports routing rule update
    • Support OVS programming of routing rules in ACA
    • Routing rule scenario tests
      • Network-level routing table update
      • Subnet-level routing table update
      • Scenario 1: Step 1 Create subnet/port/router, Step 2 attach Subnet to router, Step 3 Add routing rule
      • Scenario 2: Step 1 Create subnet/router and attach subnet with router, Step 2 create port, Step 3 add routing rule
      • Scenario 3: Step 1 Create subnet/router and attach subnet with router, Step 2 add routing rule, Step 3 create port
  • Prototype per-VM multi ports scenarios

Alcor Fundamental

• Alcor DevOps and CI/CD enhancement
  • Support ACA build and deployment in Jenkins pipeline
  • Alcor busybox pingtest script fix and enhancement to support all existing E2E scenarios.
  • Cover Alcor API GW in the busybox ping test
  • AWS Jenkins environment hot fix
• Fix bugs
  • VPC mgr: /segments/createDefaultTable API creating default segment table for network takes too long

University Collaboration (stretch goal)

• VPC-based implementation for Message Queue scale path (Min Chen/Luyao) - ETA 8/15 e2e func, start perf testing
• Scalability test framework for 1M nodes regions and 100K ports VPC (Jiawei/Min Chen) - ETA 8/30
• ML-based on-demand programming (Yan Yu/Shuang Liang) - Req. cleared, ETA 8/4 for related works

Nice to have

• Rest Documents