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Bp Performance Optimization

skill-davidyichengwei-agentic-engineering-framework-bp-performance-optimization · by davidYichengWei

提供性能优化方法论、设计原则和具体优化规则。在编写代码、优化性能瓶颈、进行 code review 时使用,涵盖 CPU、内存、I/O、并发等维度。

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Install

$ agentstack add skill-davidyichengwei-agentic-engineering-framework-bp-performance-optimization

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

Security review passed
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6mo ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

性能优化技术

前置检查

> 本 skill 是参考资料,不是工作流入口。

在应用本 skill 的优化规则前,必须确认:

  1. 优化目标是否明确?
  • 具体要优化什么?延迟?吞吐?内存?
  • 当前数据是多少?目标是多少?
  • 如何测量和验证?
  1. 是否已经定位瓶颈?
  • 有 profiling 数据吗?
  • 热点在哪里?

如果以上问题不清楚

  • 涉及代码修改 → 先走 workflow-code-generation Skill(它会引导需求澄清)
  • 仅做分析 → 先与用户确认优化目标和当前数据

核心理念

> 优化的本质是简化。 复杂的代码通常更大、更慢、更耗能。

方法论

| 阶段 | 要点 | |------|------| | 1. 定义目标 | 明确成功标准:延迟?吞吐?内存?功耗? | | 2. 设计评估 | 糟糕的设计无法靠优化弥补 | | 3. Profile | 关注消耗指标(指令数、cache miss),不只是时间 | | 4. 算法优先 | 先优化数据结构和算法 | | 5. 应用规则 | 对热点应用具体优化规则 |

设计原则

| 原则 | 说明 | |------|------| | 简单直接 | 避免过度抽象;能删代码比加代码好 | | 连续优于分散 | vector/数组优于链表(cache 友好) | | 直接优于间接 | 减少指针追逐,每次间接访问都是潜在 cache miss | | 独占优于共享 | unique_ptr 无开销;shared_ptr 有原子操作开销 | | 扁平优于深层 | 避免复杂继承层次和虚函数派发 | | Early Binding | 把工作提前做一次,避免重复做多次 | | 模块化 | 清晰契约,允许局部替换而不改架构 |


优化规则速查

Space-for-Time(空间换时间)

| 规则 | 说明 | |------|------| | Data Structure Augmentation | 添加冗余信息加速操作 | | Precomputation | 预计算并存储结果 | | Caching | 缓存频繁访问的数据 | | Lazy Evaluation | 延迟计算直到真正需要 |

详见 [reference/space-for-time.md](reference/space-for-time.md)

Time-for-Space(时间换空间)

| 规则 | 说明 | |------|------| | Packing | 紧凑存储减少内存占用 | | Overlaying | 复用内存空间 | | Interpreters | 用解释器压缩程序表示 |

详见 [reference/time-for-space.md](reference/time-for-space.md)

Loop Rules(循环优化)

| 规则 | 说明 | |------|------| | Code Motion | 将循环不变量移出循环 | | Combining Tests | 合并测试条件,使用哨兵 | | Loop Unrolling | 展开循环减少迭代开销 | | Loop Fusion | 合并相同范围的循环 |

详见 [reference/loop-rules.md](reference/loop-rules.md)

Logic Rules(逻辑优化)

| 规则 | 说明 | |------|------| | Algebraic Identities | 用等价的更廉价表达式替换 | | Short-Circuiting | 提前终止求值 | | Reordering Tests | 廉价/常成功的测试放前面 | | Precompute Logical Functions | 查表替代逻辑计算 |

详见 [reference/logic-rules.md](reference/logic-rules.md)

Procedure Rules(过程优化)

| 规则 | 说明 | |------|------| | Inlining | 内联展开减少调用开销 | | Exploit Common Cases | 快速路径处理常见情况 | | Tail Recursion Removal | 尾递归转循环 | | Parallelism | 利用硬件并行能力 |

详见 [reference/procedure-rules.md](reference/procedure-rules.md)

Expression Rules(表达式优化)

| 规则 | 说明 | |------|------| | Compile-Time Initialization | 编译期初始化 | | Strength Reduction | 用廉价操作替代昂贵操作 | | Common Subexpression Elimination | 消除公共子表达式 | | Word Parallelism | 利用字宽并行(位操作) |

详见 [reference/expression-rules.md](reference/expression-rules.md)

Cache & Memory(缓存和内存)

| 规则 | 说明 | |------|------| | AoS → SoA | 单字段扫描时结构体数组转数组结构体 | | Loop Tiling | 分块处理,使工作集 fit 进 cache | | False Sharing | 多线程变量对齐到不同 cache line | | Arena/Pool | 批量分配,避免频繁 malloc |

详见 [reference/cache-and-memory.md](reference/cache-and-memory.md)

Modern C++ Tricks

| 规则 | 说明 | |------|------| | string_view/span | 避免拷贝,零开销抽象 | | Branchless | 减少分支预测失败惩罚 | | CRTP | 静态多态替代虚函数 | | Sharded Lock | 分片锁减少竞争 |

详见 [reference/modern-cpp-tricks.md](reference/modern-cpp-tricks.md)


Code Review 检查清单

设计层面:

  • [ ] 数据结构是否连续紧凑?
  • [ ] 是否有不必要的抽象层或间接访问?
  • [ ] 关键路径是否简单直接?

实现层面:

  • [ ] 循环不变量是否已移出?
  • [ ] 是否有可预计算的值?
  • [ ] 测试条件顺序是否最优?
  • [ ] 是否存在重复计算?

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.