DataDog/java-profiler
Dec 2024 – Jan 2025
2 Months active
Languages Used
C++
Technical Skills
ARM64 architectureDebuggingLow-level programmingStack unwindingSystem programmingnative code
Andrei Pangin
PROFILE
Andrei Pangin
Over a two-month period, this developer enhanced the DataDog/java-profiler by addressing ARM64 stack unwinding and profiling depth. They resolved a critical issue with DWARF unwinding on ARM64 by implementing architecture-specific logic for frame and stack pointer retrieval in C++, improving the accuracy of native memory stack walking and profiling. In the following month, they expanded the profiler’s reserved frames from four to ten, enabling deeper performance analysis and more granular profiling data. Their work demonstrated strong skills in low-level programming, system programming, and debugging, with careful integration and validation to ensure stability and reliability in native code environments.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
214
Activity Months2
Your Network
12 people
Work History
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for DataDog/java-profiler: Focused on expanding profiling capabilities through a targeted feature enhancement. Implemented Profiling Enhancement: Expand profiler reserved frames, increasing the reserved frames in the profiler header from 4 to 10 to support more synthetic frames for deeper profiling. This change was delivered via a cherry-pick of a prior commit, integrating existing functionality with careful validation to minimize risk.
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for DataDog/java-profiler: Focused on expanding profiling capabilities through a targeted feature enhancement. Implemented Profiling Enhancement: Expand profiler reserved frames, increasing the reserved frames in the profiler header from 4 to 10 to support more synthetic frames for deeper profiling. This change was delivered via a cherry-pick of a prior commit, integrating existing functionality with careful validation to minimize risk.
January 2025
December 2024
1 Commits
Dec 1, 2024In December 2024, delivered a critical ARM64 DWARF unwinding fix for native memory stacks in DataDog/java-profiler, ensuring accurate stack walking and memory profiling on ARM64. Implemented architecture-specific frame pointer and stack pointer retrieval definitions; updated copyright/license metadata in stackWalker.cpp. This work improves profiling accuracy for native memory usage and stability of the profiler on ARM64, enabling more reliable performance tuning and issue diagnosis.
December 2024
1 Commits
Dec 1, 2024In December 2024, delivered a critical ARM64 DWARF unwinding fix for native memory stacks in DataDog/java-profiler, ensuring accurate stack walking and memory profiling on ARM64. Implemented architecture-specific frame pointer and stack pointer retrieval definitions; updated copyright/license metadata in stackWalker.cpp. This work improves profiling accuracy for native memory usage and stability of the profiler on ARM64, enabling more reliable performance tuning and issue diagnosis.
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Quality Metrics
Correctness95.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
ARM64 architectureDebuggingLow-level programmingStack unwindingSystem programmingnative codeperformance analysisprofiling
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