BTrace 進行性能測試

使用BTrace 做性能測試

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

下載對應的jar包

測試時後，將btrace測試類和被測試類放在同一個機器上

將btrace測試類寫好，放在btrace解壓的bin目錄下

調用如下命令進行測試

sh btrace pid BtraceTest.java

pid可通過jps命令來查看，默認端口是2020端口，如果被測試類有多個進程，則端口號累加

2021 2022 2023 ……

Btrace類

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簡單實用教程 http://www.linuxidc.com/Linux/2012-12/76155.htm