BTrace 进行性能测试

使用BTrace 做性能测试

在官网https://kenai.com/projects/btrace/downloads/directory/releases/release-1.2.4

下载对应的jar包

测试时后，将btrace测试类和被测试类放在同一个机器上

将btrace测试类写好，放在btrace解压的bin目录下

调用如下命令进行测试

sh btrace pid BtraceTest.java

pid可通过jps命令来查看，默认端口是2020端口，如果被测试类有多个进程，则端口号累加

2021  2022  2023 ……

Btrace类

import com.sun.btrace.annotations.BTrace;

import com.sun.btrace.annotations.Kind;

import com.sun.btrace.annotations.Location;

import com.sun.btrace.annotations.OnMethod;

import com.sun.btrace.annotations.ProbeClassName;

import com.sun.btrace.annotations.ProbeMethodName;

import com.sun.btrace.annotations.TLS;

import static com.sun.btrace.BTraceUtils.*;

@BTrace

public class BtraceTest {

@TLS

private static long startTime=0;

@OnMethod(clazz = "/*/", method = "/.*/", location = @Location(value=Kind.ENTRY, clazz="/.*/", method="/.*/"))

public static void startMethod() {

startTime =timeMillis();

}

@OnMethod(clazz = "/*/", method = "/.*/", location = @Location(value=Kind.RETURN, clazz="/.*/", method="/.*/"))

public static void endMethod(@ProbeClassName String className, @ProbeMethodName String methodName) {

println(concat("threadId:", str(threadId(currentThread()))));

println(strcat("className:", className)); 

println(strcat("methodName:", methodName));

println(strcat("exeTime:", str(timeMillis()-startTime))); 

}

@OnMethod(clazz = "//", method = "sendHttpRequest", location = @Location(value=Kind.RETURN, clazz="/.*/", method="/.*/"))

public static void endMethod2(@ProbeClassName String className, @ProbeMethodName String methodName) {

println("CommonBizImpl----sendHttpRequest----------");

//System.out.println("CommonBizImpl----sendHttpRequest----------");

println(concat("threadId:", str(threadId(currentThread()))));

println(strcat("className:", className)); 

println(strcat("methodName:", methodName));

println(strcat("exeTime:", str(timeMillis()-startTime))); 

}

}
 

threadId:34746

className:*l

methodName:getCacheByTid

exeTime:4

threadId:34754

className:*

methodName:getCacheByTid

exeTime:4

threadId:34746

className:*

methodName:getCacheByTid

exeTime:4

threadId:34746

className:*

methodName:getCacheByTid

exeTime:3

BTrace简单实用教程