Developer
Richard Barnes
rbarnes@meta.com
Performance
YoY:+871%Key patterns and highlights from this developer's activity.
Breakdown of growth, maintenance, and fixes effort over time.
Bugs introduced vs. fixed over time.
No bugs introduced or fixed in this period.
Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.
Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.
The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.
Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:
POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json
Request:
{
"startTime": "2025-01-01T00:00:00Z",
"endTime": "2025-12-31T23:59:59Z",
"bucketSize": "BUCKET_SIZE_MONTH",
"groupBy": ["repository_id" | "deliverer_email"]
}
Response:
{
"productivePct": 74,
"maintenancePct": 18,
"wastedPct": 8,
"buckets": [
{
"bucketStart": "2025-01-01T00:00:00Z",
"productive": 4.2,
"maintenance": 1.8,
"wasted": 0.6
}
]
}Latest analyzed commits from this developer.
| Hash | Message | Date | Files | Effort |
|---|---|---|---|---|
| 5ae1dd9 | This commit introduces a **new capability** to the **Folly math library** by adding `ReproducibleAccumulator.h`, a header-only C++ class for **reproducible floating-point summation**. This utility guarantees **order-independent summation results** using binned floating-point arithmetic, addressing a common source of non-determinism in numerical computations. It offers accuracy at least as good as conventional summation, handles edge cases like overflow/underflow, and includes comprehensive unit tests and benchmarks to validate its performance and correctness, providing a robust tool for applications requiring high numerical stability and determinism. | Mar 29 | 7 | maint |
| 7c71c8c | This commit **refactors** the **Folly memory resource library** by explicitly moving `folly/memory/MemoryResource.h` to require **C++20 or later**. It introduces a preprocessor check within the header to enforce this C++ standard, ensuring that consumers of this module compile with a modern C++ environment. Additionally, the build configuration for the `folly/memory` module is updated to include `folly:portability` as a dependency, supporting the C++20-specific changes. This **modernization** effort prepares the module for leveraging C++20 features and guarantees compatibility for its users. | Mar 27 | 3 | maint |
| e329348 | This commit **introduces `runtime_dependency_handling` support for `rust_binary` and `rust_test` targets**, resolving a runtime failure when these executables transitively depend on prebuilt shared libraries. It **enhances the Rust build rules** by adding a `runtime_dependency_handling` attribute, which, when set to "symlink", collects and symlinks necessary shared library dependencies into the runfiles tree. This new **capability** mirrors the existing behavior of `cxx_binary` and ensures proper execution of Rust programs that rely on shared libraries. The change also updates the **CXX toolchain** to include `supports_shared_libraries` for more robust dependency collection, preventing issues on platforms like Windows by selectively including shared libraries and avoiding forced shared builds for all transitive dependencies. | Mar 23 | 7 | grow |
| a606d91 | This commit **fixes a linker error** on macOS by adding a missing dependency to the **`compiler`** CMake target. The `compiler` target's code generation utilities were calling `diagnostics_engine::do_report()`, a function defined within the **`compiler_base`** library. Previously, `compiler` did not explicitly link against `compiler_base`, leading to an "Undefined symbols" error during compilation. This **build system maintenance** ensures that the `compiler` target correctly links all necessary diagnostic components, resolving build failures and improving the robustness of the compilation process. | Mar 23 | 2 | – |
| a277b22 | This commit **resolves a build system race condition** affecting the **Thrift metadata generation** process. It adds a crucial CMake dependency, ensuring that the `thriftmetadata` target correctly waits for the `any_rep-cpp2-target` to complete its codegen. This **prevents intermittent parallel build failures** where `TypeSystemTraits.cpp` might attempt to compile before its required generated header, `thrift/lib/thrift/gen-cpp2/any_rep_types.h`, is available. The change enhances the **stability and reliability of the CMake build system** for Thrift-dependent components. | Mar 23 | 2 | – |
| 2408339 | Add tmate SSH debugging to generated GitHub Actions workflows | Mar 17 | 1 | – |
| cdc19d0 | Add tmate SSH debugging to generated GitHub Actions workflows | Mar 17 | 1 | – |
| b06bc99 | Add tmate SSH debugging to generated GitHub Actions workflows | Mar 17 | 1 | – |
| cebd488 | Use clang-19 for rebalancer OSS Linux builds | Mar 17 | 2 | – |
| c8608e0 | Use clang-19 for rebalancer OSS Linux builds | Mar 17 | 2 | – |
| aa1d796 | Use clang-19 for rebalancer OSS Linux builds | Mar 17 | 2 | – |
| 9391d79 | Upgrade default GitHub Actions Linux runner to Ubuntu 24.04 | Mar 17 | 1 | – |
| 5cbefb3 | Upgrade default GitHub Actions Linux runner to Ubuntu 24.04 | Mar 17 | 1 | – |
| 4099e98 | Upgrade default GitHub Actions Linux runner to Ubuntu 24.04 | Mar 17 | 1 | – |
| 377d1f9 | Rebalancer OSS: Use ShipIt | Mar 15 | 1 | – |
| 878172b | Rebalancer OSS: Build from main | Mar 15 | 1 | – |
| aca25a2 | Rebalancer OSS: Use ShipIt | Mar 15 | 1 | – |
| 61a95ff | Rebalancer OSS: Build from main | Mar 15 | 1 | – |
| d7f9de2 | Rebalancer OSS: Build from main | Mar 15 | 1 | – |
| 427f36b | Rebalancer OSS: Use ShipIt | Mar 15 | 1 | – |
This commit introduces a **new capability** to the **Folly math library** by adding `ReproducibleAccumulator.h`, a header-only C++ class for **reproducible floating-point summation**. This utility guarantees **order-independent summation results** using binned floating-point arithmetic, addressing a common source of non-determinism in numerical computations. It offers accuracy at least as good as conventional summation, handles edge cases like overflow/underflow, and includes comprehensive unit tests and benchmarks to validate its performance and correctness, providing a robust tool for applications requiring high numerical stability and determinism.
This commit **refactors** the **Folly memory resource library** by explicitly moving `folly/memory/MemoryResource.h` to require **C++20 or later**. It introduces a preprocessor check within the header to enforce this C++ standard, ensuring that consumers of this module compile with a modern C++ environment. Additionally, the build configuration for the `folly/memory` module is updated to include `folly:portability` as a dependency, supporting the C++20-specific changes. This **modernization** effort prepares the module for leveraging C++20 features and guarantees compatibility for its users.
This commit **introduces `runtime_dependency_handling` support for `rust_binary` and `rust_test` targets**, resolving a runtime failure when these executables transitively depend on prebuilt shared libraries. It **enhances the Rust build rules** by adding a `runtime_dependency_handling` attribute, which, when set to "symlink", collects and symlinks necessary shared library dependencies into the runfiles tree. This new **capability** mirrors the existing behavior of `cxx_binary` and ensures proper execution of Rust programs that rely on shared libraries. The change also updates the **CXX toolchain** to include `supports_shared_libraries` for more robust dependency collection, preventing issues on platforms like Windows by selectively including shared libraries and avoiding forced shared builds for all transitive dependencies.
This commit **fixes a linker error** on macOS by adding a missing dependency to the **`compiler`** CMake target. The `compiler` target's code generation utilities were calling `diagnostics_engine::do_report()`, a function defined within the **`compiler_base`** library. Previously, `compiler` did not explicitly link against `compiler_base`, leading to an "Undefined symbols" error during compilation. This **build system maintenance** ensures that the `compiler` target correctly links all necessary diagnostic components, resolving build failures and improving the robustness of the compilation process.
This commit **resolves a build system race condition** affecting the **Thrift metadata generation** process. It adds a crucial CMake dependency, ensuring that the `thriftmetadata` target correctly waits for the `any_rep-cpp2-target` to complete its codegen. This **prevents intermittent parallel build failures** where `TypeSystemTraits.cpp` might attempt to compile before its required generated header, `thrift/lib/thrift/gen-cpp2/any_rep_types.h`, is available. The change enhances the **stability and reliability of the CMake build system** for Thrift-dependent components.
Add tmate SSH debugging to generated GitHub Actions workflows
Add tmate SSH debugging to generated GitHub Actions workflows
Add tmate SSH debugging to generated GitHub Actions workflows
Use clang-19 for rebalancer OSS Linux builds
Use clang-19 for rebalancer OSS Linux builds
Use clang-19 for rebalancer OSS Linux builds
Upgrade default GitHub Actions Linux runner to Ubuntu 24.04
Upgrade default GitHub Actions Linux runner to Ubuntu 24.04
Upgrade default GitHub Actions Linux runner to Ubuntu 24.04
Rebalancer OSS: Use ShipIt
Rebalancer OSS: Build from main
Rebalancer OSS: Use ShipIt
Rebalancer OSS: Build from main
Rebalancer OSS: Build from main
Rebalancer OSS: Use ShipIt
Commit activity distribution by hour and day of week. Shows when this developer is most active.
Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.