facebook/jemalloc
Mar 2025 – Jul 2025
3 Months active
Languages Used
C
Technical Skills
C ProgrammingConcurrencyDebuggingMemory ManagementPerformance OptimizationSystem Programming
Shirui Cheng
PROFILE
Shirui Cheng
Sherry Cheng contributed to the facebook/jemalloc repository by enhancing memory management for large-scale, concurrent workloads. She implemented Transparent Huge Pages support within the Per-Arena Cache’s Huge Arena, addressing allocation efficiency and resolving a race condition in THP initialization to improve stability. Sherry also refined default experimental options, enabling opt_experimental_tcache_gc and optimizing calloc-based allocations to boost memory reclamation and performance. In addition, she simplified the memory allocation path by removing the bin batching feature, reducing complexity and improving maintainability. Her work demonstrated depth in C programming, concurrency, and system programming, delivering robust solutions for high-performance memory management challenges.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
4Total
Bugs
2
Commits
4
Features
2
Lines of code
1,710
Activity Months3
Your Network
2251 people
Work History
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for facebook/jemalloc focused on simplifying memory allocation by removing the bin batching feature. Reverted changes to batcher.c and related references in arena and bin structures; contributed to a cleaner, more maintainable memory allocation path and improved stability.
1 Commits
Jul 1, 2025July 2025 monthly summary for facebook/jemalloc focused on simplifying memory allocation by removing the bin batching feature. Reverted changes to batcher.c and related references in arena and bin structures; contributed to a cleaner, more maintainable memory allocation path and improved stability.
July 2025
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for facebook/jemalloc: Delivered default experimental options to improve memory management by enabling opt_experimental_tcache_gc by default and setting a default for opt_calloc_madvise_threshold. This work enhances memory reclamation, stability, and performance for memory-heavy workloads within the jemalloc project.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for facebook/jemalloc: Delivered default experimental options to improve memory management by enabling opt_experimental_tcache_gc by default and setting a default for opt_calloc_madvise_threshold. This work enhances memory reclamation, stability, and performance for memory-heavy workloads within the jemalloc project.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025: Delivered memory-management enhancements for facebook/jemalloc with THP support in the Huge Arena of the Per-Arena Cache (PAC) and resolved a critical THP initialization race condition. The work improves memory allocation efficiency for large workloads and enhances stability under high-concurrency scenarios.
2 Commits • 1 Features
Mar 1, 2025March 2025: Delivered memory-management enhancements for facebook/jemalloc with THP support in the Huge Arena of the Per-Arena Cache (PAC) and resolved a critical THP initialization race condition. The work improves memory allocation efficiency for large workloads and enhances stability under high-concurrency scenarios.
March 2025
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Quality Metrics
Correctness87.6%
Maintainability85.0%
Architecture82.6%
Performance72.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
C ProgrammingConcurrencyDebuggingMemory ManagementPerformance OptimizationSystem ProgrammingUnit Testing
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