facebook/fboss
Oct 2025 – Apr 2026
6 Months active
Languages Used
C++
Technical Skills
C++ developmentCLI developmentNetwork programmingC++data loggingdatabase design
Daniel Long
PROFILE
Daniel Long
Daniel Long contributed to the facebook/fboss repository by building and enhancing core networking and benchmarking features over six months. He developed CLI tools for improved Serdes parameter visibility, implemented robust data logging with new database tables, and stabilized test infrastructure by introducing targeted flags to reduce flaky failures. Daniel designed and delivered a DSF configuration testing framework and overhauled CPU latency benchmarking, adding per-port attribution and multi-port measurement capabilities. His work leveraged C++ for network programming, memory management, and performance benchmarking, demonstrating depth in debugging, data structuring, and test automation to improve reliability, diagnosability, and actionable insights for fboss deployments.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
13Total
Bugs
2
Commits
13
Features
6
Lines of code
922
Activity Months6
Your Network
2831 peopleSame Organization
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Work History
April 2026
6 Commits • 2 Features
Apr 1, 2026Month 2026-04 performance summary for facebook/fboss: Delivered a major CPU latency benchmarking overhaul with per-port attribution and improved measurement fidelity, enabling targeted performance improvements and SLA visibility. Introduced robust multi-port benchmarking (concurrent and sequential) to reveal contention and port-level bottlenecks, while keeping measurement accuracy high through enhanced payload decoding and IP/VLAN handling. The work emphasizes business value through deeper latency insights, faster root-cause analysis, and richer reporting suitable for performance reviews and capacity planning.
6 Commits • 2 Features
Apr 1, 2026Month 2026-04 performance summary for facebook/fboss: Delivered a major CPU latency benchmarking overhaul with per-port attribution and improved measurement fidelity, enabling targeted performance improvements and SLA visibility. Introduced robust multi-port benchmarking (concurrent and sequential) to reveal contention and port-level bottlenecks, while keeping measurement accuracy high through enhanced payload decoding and IP/VLAN handling. The work emphasizes business value through deeper latency insights, faster root-cause analysis, and richer reporting suitable for performance reviews and capacity planning.
April 2026
March 2026
3 Commits • 1 Features
Mar 1, 2026March 2026: Delivered Packet Traps Destination MAC Handling Enhancement in fboss with trapPacketUtils updates, enabling destination-IP-based actions and improved benchmarking capabilities. Fixed Destruction Order Stabilization in BcmRouteTable and resetObject handling, correcting destructor ordering to prevent use-after-free and reverting a prior change for safe destruction sequence. Business impact: more reliable packet processing, safer memory management, and clearer benchmarking visibility, reducing production risk and accelerating debugging. Technologies/skills demonstrated: C++, memory management, destructor ordering, shared_ptr/RefMap usage, benchmarking/validated tests, code review and collaboration.
March 2026
3 Commits • 1 Features
Mar 1, 2026March 2026: Delivered Packet Traps Destination MAC Handling Enhancement in fboss with trapPacketUtils updates, enabling destination-IP-based actions and improved benchmarking capabilities. Fixed Destruction Order Stabilization in BcmRouteTable and resetObject handling, correcting destructor ordering to prevent use-after-free and reverting a prior change for safe destruction sequence. Business impact: more reliable packet processing, safer memory management, and clearer benchmarking visibility, reducing production risk and accelerating debugging. Technologies/skills demonstrated: C++, memory management, destructor ordering, shared_ptr/RefMap usage, benchmarking/validated tests, code review and collaboration.
January 2026
1 Commits • 1 Features
Jan 1, 2026Month 2026-01: Delivered foundational DSF configuration testing support, establishing a framework for DSF validation. Implemented a new DSF configuration test class, enabling repeatable tests and future expansion. No major bugs fixed this month. The work improves quality assurance for DSF-related features and reduces release risk. Technologies/skills demonstrated include test framework design, Git-based collaboration, and staging test artifacts for ongoing automation.
1 Commits • 1 Features
Jan 1, 2026Month 2026-01: Delivered foundational DSF configuration testing support, establishing a framework for DSF validation. Implemented a new DSF configuration test class, enabling repeatable tests and future expansion. No major bugs fixed this month. The work improves quality assurance for DSF-related features and reduces release risk. Technologies/skills demonstrated include test framework design, Git-based collaboration, and staging test artifacts for ongoing automation.
January 2026
December 2025
1 Commits
Dec 1, 2025December 2025: Stabilized critical test infrastructure in the facebook/fboss repository by introducing a disable-LACP flag in the Production Invariant Test. This change prevents LACP interference in specific testing environments, improving test reliability and CI feedback across environments.
December 2025
1 Commits
Dec 1, 2025December 2025: Stabilized critical test infrastructure in the facebook/fboss repository by introducing a disable-LACP flag in the Production Invariant Test. This change prevents LACP interference in specific testing environments, improving test reliability and CI feedback across environments.
November 2025
1 Commits • 1 Features
Nov 1, 2025In November 2025, delivered a Scuba data system enhancement for the fboss repo by adding a new fboss_bisect2_tool table to log attributes for improved data tracking and analysis. This change provides focused instrumentation for bisect runs, enabling faster root-cause analysis, better trend visibility, and more data-driven decision-making for release quality. The work was implemented in commit 8482f31669ce13489003467e7e6f996d331da920 and landed after code review (Differential Revision: D86250841; reviewed by zechengh09).
1 Commits • 1 Features
Nov 1, 2025In November 2025, delivered a Scuba data system enhancement for the fboss repo by adding a new fboss_bisect2_tool table to log attributes for improved data tracking and analysis. This change provides focused instrumentation for bisect runs, enabling faster root-cause analysis, better trend visibility, and more data-driven decision-making for release quality. The work was implemented in commit 8482f31669ce13489003467e7e6f996d331da920 and landed after code review (Differential Revision: D86250841; reviewed by zechengh09).
November 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on improving visibility and diagnosability of Serdes configurations in the fboss2 CLI. Delivered an enhancement to fboss2 show interface phy to print Serdes parameters, improving debugging and validation of PHY configurations in fboss deployments. The change is captured in the commit ca99db33684f033bfec3c2177380fc56941b8d47 with a detailed log addition and reviewed under D84664607. Impact: faster issue triage for PHY-related configurations and increased operator confidence in interface PHY data.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on improving visibility and diagnosability of Serdes configurations in the fboss2 CLI. Delivered an enhancement to fboss2 show interface phy to print Serdes parameters, improving debugging and validation of PHY configurations in fboss deployments. The change is captured in the commit ca99db33684f033bfec3c2177380fc56941b8d47 with a detailed log addition and reviewed under D84664607. Impact: faster issue triage for PHY-related configurations and increased operator confidence in interface PHY data.
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Quality Metrics
Correctness90.8%
Maintainability81.6%
Architecture86.2%
Performance81.6%
AI Usage24.6%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ developmentCLI developmentNetwork programmingbenchmarkingdata loggingdata structuringdatabase designdebuggingmemory managementnetwork programmingobject-oriented programmingperformance benchmarkingsoftware developmentsystem performance benchmarking
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