Performance Monitoring With AOP

Jun 19, 2012Download as ppt, pdf

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ivannotes

文档讨论了性能监控的重要性，以及需要监控的关键点，包括外部依赖和页面访问速度。介绍了多种性能监控的方法与工具，如 Perf4j、Spring AOP 和 AspectJ。还提供了未来发展方向和参考资料。

Agenda
? 为什么需要对性能进行监控
? 哪些点需要进行性能监控
? 简单即是美— 如何来做性能监控
? Future
? 参考资料
? Q&A

为什么需要对性能进行监控

? 问道
哪个接口调用最耗时
哪个页面访问速度最慢
哪个接口调用次数最多
出问题的时候是哪个接口错误率最高
? 一切为了稳定，一切为了快速

哪些点需要进行性能监控

? 外部依赖
谨慎的处理外部依赖
? 页面访问
了解网站的运行状况
? SPI
一旦发布就要终身负责

简单即是美—如何来做性能监控

? 性能统计 Perf4J

? 无缝监控
? Delegator + Spring AOP
? Rose Intercepter
? AspectJ

Perf4J
? System.out.println(endTime – startTime);
? 编程模型
StopWatch sw = new **StopWatch();
sw.start();
// your code
sw.stop(tag);

Perf4J
? 结合 Commons Log
Log logger = LogFactory.getLog(“performance”);
StopWatch watch = new CommonsLogStopWatch(logger);
? Log4j 配置
<appender name="delegatorPerfAppender"
class="org.perf4j.log4j.AsyncCoalescingStatisticsAppender">
<param name="TimeSlice" value="60000" />
<appender-ref ref="delegatorAppender" />
</appender>

<appender name="delegatorAppender" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="/performance.log" />
<param name="DatePattern" value="'.'yyyyMMdd" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="[%-5p %d{yyyy-MM-dd HH:mm:ss.SSS}] %l [%m]
%n" />
</layout>
</appender>

无缝监控
? Delegator + Spring AOP
外部依赖约定使用 Delegator 封装，利用 Spring AOP
进行切片监控接口调用性能
实现文档： http://www.ivannotes.com/2012/spring-aop/

无缝监控
? Rose Interceptor
利用 Rose 的 Interceptor 采用 round 机制对 Web 服务进行性能监控
public class WebPerfomanceInterceptor extends ControllerInterceptorAdapter {

private static final Log logger = LogFactory.getLog(“performance");

@Override
public int getPriority() {
return 200;
}

@Override
protected Object round(Invocation inv, InvocationChain chain) throws Exception {
StringBuilder sb = new StringBuilder();
sb.append(inv.getRequest().getMethod()).append("|");
sb.append(inv.getResourceId());

StopWatch watch = new CommonsLogStopWatch(logger);
try {
watch.start();
return super.round(inv, chain);
} finally {
watch.stop(sb.toString());
}
}
}

无缝监控
? AspectJ 对 SOA 服务进行监控
× Compile Time weaving
√ Load Time weaving
√ @AspectJ Style

无缝监控

1) Java agent
2) aop.xml
3) @AspectJ

Future
? Abstract & Open
? Data Visualization
? Dynamic Switch

参考资料
? http://www.ivannotes.com/2012/spring-aop/
? http://perf4j.codehaus.org/devguide.html
? http://www.eclipse.org/aspectj/doc/released/adk15notebook/in
? <Spring reference>
? <AspectJ in Action>

该文档介绍了使用笔测迟丑辞苍进行调试、测试和性能分析的工具和方法，包括辫诲产调试器、耻苍颈迟迟别蝉迟单元测试，以及迟颈尘别颈迟和肠辫谤辞蹿颈濒别用于评测程序性能。文中详细说明了各工具的使用案例和基本概念，以帮助开发者更高效地排查错误并优化代码表现。通过撰写测试用例和使用分析工具，开发者可以确保代码质量和执行效率。

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Performance Monitoring With AOP

1. Performance Monitoring With AOP @ivannotes http://www.ivannotes.com

2. Agenda ? 为什么需要对性能进行监控 ? 哪些点需要进行性能监控 ? 简单即是美— 如何来做性能监控 ? Future ? 参考资料 ? Q&A

3. 为什么需要对性能进行监控 ? 问道哪个接口调用最耗时哪个页面访问速度最慢哪个接口调用次数最多出问题的时候是哪个接口错误率最高 ? 一切为了稳定，一切为了快速

4. 哪些点需要进行性能监控 ? 外部依赖谨慎的处理外部依赖 ? 页面访问了解网站的运行状况 ? SPI 一旦发布就要终身负责

5. 简单即是美—如何来做性能监控 ? 性能统计 Perf4J ? 无缝监控 ? Delegator + Spring AOP ? Rose Intercepter ? AspectJ

6. Perf4J ? System.out.println(endTime – startTime); ? 编程模型 StopWatch sw = new **StopWatch(); sw.start(); // your code sw.stop(tag);

7. Perf4J ? 结合 Commons Log Log logger = LogFactory.getLog(“performance”); StopWatch watch = new CommonsLogStopWatch(logger); ? Log4j 配置 <appender name="delegatorPerfAppender" class="org.perf4j.log4j.AsyncCoalescingStatisticsAppender"> <param name="TimeSlice" value="60000" /> <appender-ref ref="delegatorAppender" /> </appender> <appender name="delegatorAppender" class="org.apache.log4j.DailyRollingFileAppender"> <param name="File" value="/performance.log" /> <param name="DatePattern" value="'.'yyyyMMdd" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="[%-5p %d{yyyy-MM-dd HH:mm:ss.SSS}] %l [%m] %n" /> </layout> </appender>

8. Per4J ? CoalescingStatistics

9. 无缝监控 ? Delegator + Spring AOP 外部依赖约定使用 Delegator 封装，利用 Spring AOP 进行切片监控接口调用性能实现文档： http://www.ivannotes.com/2012/spring-aop/

10. 无缝监控 ? Rose Interceptor 利用 Rose 的 Interceptor 采用 round 机制对 Web 服务进行性能监控 public class WebPerfomanceInterceptor extends ControllerInterceptorAdapter { private static final Log logger = LogFactory.getLog(“performance"); @Override public int getPriority() { return 200; } @Override protected Object round(Invocation inv, InvocationChain chain) throws Exception { StringBuilder sb = new StringBuilder(); sb.append(inv.getRequest().getMethod()).append("|"); sb.append(inv.getResourceId()); StopWatch watch = new CommonsLogStopWatch(logger); try { watch.start(); return super.round(inv, chain); } finally { watch.stop(sb.toString()); } } }

11. 无缝监控 ? AspectJ 对 SOA 服务进行监控 × Compile Time weaving √ Load Time weaving √ @AspectJ Style

12. 无缝监控 1) Java agent 2) aop.xml 3) @AspectJ

13. Future ? Abstract & Open ? Data Visualization ? Dynamic Switch

14. 参考资料 ? http://www.ivannotes.com/2012/spring-aop/ ? http://perf4j.codehaus.org/devguide.html ? http://www.eclipse.org/aspectj/doc/released/adk15notebook/in ? <Spring reference> ? <AspectJ in Action>

15. Q&A

16. { Thanks; }

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Performance Monitoring With AOP

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