Why Use This
This skill provides specialized capabilities for TencentBlueKing's codebase.
Use Cases
- Developing new features in the TencentBlueKing repository
- Refactoring existing code to follow TencentBlueKing standards
- Understanding and working with TencentBlueKing's codebase structure
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Updated At Jan 9, 2026, 09:52 AM
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---
name: 12-performance-monitoring
description: 性能监控指南,涵盖 Micrometer 指标采集、Prometheus 集成、性能埋点、慢查询监控、JVM 监控。当用户添加性能监控、配置指标采集、分析性能瓶颈或实现可观测性时使用。
---
# 性能监控
性能监控指南.
## 触发条件
当用户需要实现方法耗时监控、性能指标采集时,使用此 Skill。
## @BkTimed 注解
```kotlin
@Target(AnnotationTarget.FUNCTION)
@Retention(AnnotationRetention.RUNTIME)
annotation class BkTimed(
val value: String = "",
val percentiles: DoubleArray = [0.5, 0.9, 0.95, 0.99],
val histogram: Boolean = false
)
```
### 使用示例
```kotlin
@Service
class BuildService {
@BkTimed("build_start_duration")
fun startBuild(pipelineId: String): BuildId {
// 自动记录方法执行时间到 Prometheus
return doBuild(pipelineId)
}
}
```
## Watcher 耗时监控
```kotlin
class Watcher(
val id: String,
private val createTime: Long = System.currentTimeMillis()
) {
fun start(name: String)
fun stop()
fun elapsed(): Long
fun totalTimeMillis(): Long
}
```
### 使用示例
```kotlin
fun processTask(taskId: String) {
val watcher = Watcher(id = "TASK|Process|$taskId")
try {
watcher.start("validate")
validateTask(taskId)
watcher.stop()
watcher.start("execute")
executeTask(taskId)
watcher.stop()
watcher.start("notify")
notifyResult(taskId)
watcher.stop()
} finally {
watcher.stop()
LogUtils.printCostTimeWE(watcher = watcher)
}
}
// 输出: watcher|TASK|Process|xxx|total=150|elapsed=160|validate=20|execute=100|notify=30
```
## 日志格式
```kotlin
// 标准格式
watcher|{id}|total={total}|elapsed={elapsed}|{step1}={time1}|{step2}={time2}
// 示例
watcher|ENGINE|BuildStart|b-123|total=150|elapsed=160|init=20|dispatch=100|notify=30
```
## 监控指标
| 指标 | 说明 |
|------|------|
| `total` | 所有步骤耗时总和 |
| `elapsed` | 实际经过时间 |
| `{step}` | 各步骤耗时 |
## 最佳实践
1. **关键路径监控**:对核心业务流程添加监控
2. **合理命名**:使用 `模块|操作|资源ID` 格式
3. **finally 释放**:确保 watcher 在 finally 中 stop
4. **阈值告警**:对超时操作设置告警
## 相关文件
- `common-service/src/main/kotlin/com/tencent/devops/common/service/prometheus/BkTimed.kt`
- `common-api/src/main/kotlin/com/tencent/devops/common/api/util/Watcher.kt`