xapi-project/xen-api
Nov 2024 – Aug 2025
2 Months active
Languages Used
OCaml
Technical Skills
Database ManagementPerformance MonitoringSystem ProgrammingAPI Integration
Marcus Granado
PROFILE
Marcus Granado
Marcus Granado contributed to the xapi-project/xen-api repository by developing database notification hooks to support bpftrace integration, enhancing observability and external tracing capabilities. He introduced notify_begin and notify_end hooks within the database notification flow, allowing precise integration points for performance monitoring tools while maintaining backward compatibility and configurable performance impact. Marcus also improved the accuracy of VM CPU runstate metrics by leveraging the Xenctrl.Runstateinfo.V2 API, ensuring reliable reporting for monitoring and capacity planning. His work demonstrated depth in OCaml system programming, database management, and API integration, addressing both feature development and bug resolution with careful attention to reliability and rollout safety.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
52
Activity Months2
Your Network
73 people
Work History
August 2025
1 Commits
Aug 1, 2025Month 2025-08 monthly summary for xapi-project/xen-api: Focused on reliability and accuracy of VM CPU runstate metrics. Implemented accurate VM CPU Runstate reporting (runnable_vcups) by switching to Xenctrl.Runstateinfo.V2.domain_get and processing its fields to ensure the RRD metric aligns with actual VM runstates. Integrated CP-308465: RRD metric 'runnable_vcups' rebased on xen.spec/PR#481. This work improves monitoring accuracy, reduces alert noise, and provides a solid data path for capacity planning.
1 Commits
Aug 1, 2025Month 2025-08 monthly summary for xapi-project/xen-api: Focused on reliability and accuracy of VM CPU runstate metrics. Implemented accurate VM CPU Runstate reporting (runnable_vcups) by switching to Xenctrl.Runstateinfo.V2.domain_get and processing its fields to ensure the RRD metric aligns with actual VM runstates. Integrated CP-308465: RRD metric 'runnable_vcups' rebased on xen.spec/PR#481. This work improves monitoring accuracy, reduces alert noise, and provides a solid data path for capacity planning.
August 2025
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 (xapi-project/xen-api): Delivered database notification hooks to enable bpftrace integration. Introduced notify_begin and notify_end hooks in the database notification flow, providing explicit points for external tracing tools to hook into the lifecycle while preserving backward compatibility. The change includes a configurable enable/disable option to minimize performance impact and safe rollout. Committed as CP-51209: db_notification: enable/disable and begin/end hooks for bpftrace (hash 886b85279056240589fdd32ff8ca0d4017a54146).
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 (xapi-project/xen-api): Delivered database notification hooks to enable bpftrace integration. Introduced notify_begin and notify_end hooks in the database notification flow, providing explicit points for external tracing tools to hook into the lifecycle while preserving backward compatibility. The change includes a configurable enable/disable option to minimize performance impact and safe rollout. Committed as CP-51209: db_notification: enable/disable and begin/end hooks for bpftrace (hash 886b85279056240589fdd32ff8ca0d4017a54146).
Activity
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Quality Metrics
Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
OCaml
Technical Skills
API IntegrationDatabase ManagementPerformance MonitoringSystem Programming
Repositories Contributed To
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