本人在最近手机APP性能数据的过程中,又重新看了一些Android的内存相关知识,对之前写过的一篇APP性能的线程类的方法做了优化,总得来说,就是增加了PSS数据和增加了数据获取之后的数据整理工作。
获取PSS的方法原理是通过adb shell dumpsys命令获取到的,之前放弃了这个方法,因为内存数据太细分了,后来发现细分的更准确。这里没有统计Native Heap和Dalvik Heap,感觉统计数据的话并没有多大的必要。对这块也不是非常了解如果有不对的地方,还请指正。
方法如下:
/**
* 获取应用信息 利用Android系统dumpsys命令获取
* 命令能统计到java虚拟的堆内存和栈内存的使用情况
*
* @return 返回内存占用
*/
public int getMemResult() {
String cmd1 = Common.ADB_PATH + "adb shell dumpsys meminfo " + package_name;
int mem_result = 0;
try {
Process p = Runtime.getRuntime().exec(cmd1);// 通过runtime类执行cmd命令
// 正确输出流
InputStream input = p.getInputStream();// 创建并实例化输入字节流
BufferedReader reader = new BufferedReader(new InputStreamReader(input));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String line = "";
while ((line = reader.readLine()) != null) {// 循环读取
if (line.startsWith(" TOTAL")) {
mem_result = getMemInfo(line);
}
}
reader.close();// 此处reader依赖于input,应先关闭
input.close();
// 错误输出流
InputStream errorInput = p.getErrorStream();// 创建并实例化输入字节流
BufferedReader errorReader = new BufferedReader(new InputStreamReader(errorInput));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String eline = "";
while ((eline = errorReader.readLine()) != null) {// 循环读取
System.out.println(eline);// 输出
}
errorReader.close();// 此处有依赖关系,先关闭errorReader
errorInput.close();
} catch (IOException e) {
output("执行" + cmd1 + "失败!", e);
}
return mem_result;
}
下面是增加的统计方法,主要是在每次新建进程的时候都会记录一个mark,统计方法写在结束线程的方法里:
public void stopRecord() {
AppLocalMySql.getInstance().ClearUpPerformaceData(mark);//整理数据
PerformanceThread.key = false;//结束线程
}
/**
* 整理一次性能数据收集
*
* @param mark
* 统计mark
*/
public void ClearUpPerformaceData(int mark) {
getConnection();
int cpu = 0, pss = 0, rss = 0, vss = 0, total = 0;
String device = null, packages = null, test_name = null;
try {
if (!connection.isClosed()) {
outputSuccess();
Statement statement = connection.createStatement();
String sql = "SELECT AVG(cpu),AVG(pss),AVG(rss),AVG(vss),COUNT(*),device,package,test_name FROM app_result WHERE mark = "
+ mark;
ResultSet resultSet = statement.executeQuery(sql);
while (resultSet.next()) {
cpu = resultSet.getInt(1);
pss = resultSet.getInt(2);
rss = resultSet.getInt(3);
vss = resultSet.getInt(4);
total = resultSet.getInt(5);
device = resultSet.getString("device");
packages = resultSet.getString("package");
test_name = resultSet.getString("test_name");
}
String sql2 = "INSERT INTO app_report (mark,test_name,package,device,cpu,pss,rss,vss,total) VALUES ("
+ mark + ",'" + test_name + "','" + packages + "','" + device + "'," + cpu + "," + pss + ","
+ rss + "," + vss + "," + total + ")";
statement.executeUpdate(sql2);
statement.close();
connection.close();
}
} catch (SQLException e) {
output("统计方法出错!", e);
}
}
多线程实现:
package source;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author ··-·尘
* @E-mail:[email protected]
* @version 创建时间:2017年8月23日 下午2:56:22
* @alter 修改时间:2017年8月24日 10:02:19 类说明:测试内存和cpu信息
*/
public class PerformanceThread extends Thread {
public int mark = Common.getInstance().getMark();
public static boolean key = true;
public static String device_id;
public static String package_name;
public static String test_name;
// 创建实例
private static PerformanceThread performanceTest;
@Override
public void run() {
while (key) {// 循环执行该方法
try {
sleep(15 * 1000);// 线程休眠
} catch (InterruptedException e) {
e.printStackTrace();// 打印异常
}
getCpuAndMemDate();// 执行手机数据的方法
}
}
public static PerformanceThread getInstance() {
if (performanceTest == null) {
performanceTest = new PerformanceThread();
}
return performanceTest;
}
public PerformanceThread() {
getDevicesId();
PerformanceThread.package_name = Common.PAGEKAGE;
output("欢迎使用手机性能监控线程!");
}
public PerformanceThread(String package_name) {
getDevicesId();
PerformanceThread.package_name = package_name;
output("欢迎使用手机性能监控线程!");
}
public PerformanceThread(String testname, String package_name) {
getDevicesId();
PerformanceThread.package_name = package_name;
PerformanceThread.test_name = testname;
output("欢迎使用手机性能监控线程!");
}
/**
* 结束线程方法
*/
public void stopRecord() {
AppLocalMySql.getInstance().ClearUpPerformaceData(mark);
PerformanceThread.key = false;
}
/**
* 获取devicesID
*/
public void getDevicesId() {
String cmd = "adb devices";
String OSname = System.getProperty("os.name");
try {
Process p = null;
if (OSname.contains("Mac")) {
p = Runtime.getRuntime().exec(Common.ADB_PATH + cmd);
} else {
p = Runtime.getRuntime().exec("cmd /c " + cmd);
}
// 正确输出流
InputStream input = p.getInputStream();// 创建并实例化输入字节流
BufferedReader reader = new BufferedReader(new InputStreamReader(input));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String line = "";
while ((line = reader.readLine()) != null) {// 循环读取
if (line.contains("device")) {
PerformanceThread.device_id = line.replaceAll("device", "");
}
// System.out.println(line);// 输出
}
reader.close();// 此处reader依赖于input,应先关闭
input.close();
} catch (IOException e) {
output("执行" + cmd + "失败!");
e.printStackTrace();
}
}
/**
* 获取cpu和mem数据,此方法用的是top命令
*/
public void getCpuAndMemDate() {
int pss = getMemResult();// 获取内存数据
int[] result = getPerformanceResult();// 获取数据
int cpu_result = result[0];// 获取cpu
int vss = result[1];// 获取虚拟内存数据
int rss = result[2];// 获取物理内存数据
output("CPU:" + cpu_result, "VSS:" + vss, "RSS:" + rss, "PSS:" + pss);
AppLocalMySql.getInstance().saveMemAndCpuResult(mark, package_name, device_id, cpu_result, vss, rss, pss,
test_name);// 写入数据库
}
/**
* 获取统计结果 利用Linux系统top命令 -m表示个数,-n表示获取次数此处写为1
*
* @return 返回int数组,包含rss,vss,cpu百分比
*/
public int[] getPerformanceResult() {
String cmd = Common.ADB_PATH + "adb shell top -m 8 -n 1";
int cpu_result = 0, vss = 0, rss = 0;
try {
Process p = Runtime.getRuntime().exec(cmd);// 通过runtime类执行cmd命令
// 正确输出流
InputStream input = p.getInputStream();// 创建并实例化输入字节流
BufferedReader reader = new BufferedReader(new InputStreamReader(input));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String line = "";
while ((line = reader.readLine()) != null) {// 循环读取
if (line.contains(package_name)) {// 获取行
cpu_result = getCpuDate(line);
vss = getVss(line);
rss = getRss(line);
}
}
reader.close();// 此处reader依赖于input,应先关闭
input.close();// 关闭流
// 错误输出流
InputStream errorInput = p.getErrorStream();// 创建并实例化输入字节流
BufferedReader errorReader = new BufferedReader(new InputStreamReader(errorInput));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String eline = "";
while ((eline = errorReader.readLine()) != null) {// 循环读取
System.out.println(eline);// 输出
}
errorReader.close();// 此处有依赖关系,先关闭errorReader
errorInput.close();// 关闭流
} catch (IOException e) {
output("执行" + cmd + "失败!");
e.printStackTrace();
}
int[] result = { cpu_result, vss, rss };// 新建数组保存数据
return result;// 返回数组
}
/**
* 获取应用信息 利用Android系统dumpsys命令获取 命令能统计到java虚拟的堆内存和栈内存的使用情况
*
* @return 返回内存占用
*/
public int getMemResult() {
String cmd1 = Common.ADB_PATH + "adb shell dumpsys meminfo " + package_name;
int mem_result = 0;
try {
Process p = Runtime.getRuntime().exec(cmd1);// 通过runtime类执行cmd命令
// 正确输出流
InputStream input = p.getInputStream();// 创建并实例化输入字节流
BufferedReader reader = new BufferedReader(new InputStreamReader(input));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String line = "";
while ((line = reader.readLine()) != null) {// 循环读取
if (line.startsWith(" TOTAL")) {
mem_result = getMemInfo(line);
}
}
reader.close();// 此处reader依赖于input,应先关闭
input.close();
// 错误输出流
InputStream errorInput = p.getErrorStream();// 创建并实例化输入字节流
BufferedReader errorReader = new BufferedReader(new InputStreamReader(errorInput));// 先通过inputstreamreader进行流转化,在实例化bufferedreader,接收内容
String eline = "";
while ((eline = errorReader.readLine()) != null) {// 循环读取
System.out.println(eline);// 输出
}
errorReader.close();// 此处有依赖关系,先关闭errorReader
errorInput.close();
} catch (IOException e) {
output("执行" + cmd1 + "失败!", e);
}
return mem_result;
}
/**
* 获取内存信息
*
* @param info
* 截取到的APP信息
* @return 返回内存蚕蛹
*/
public int getMemInfo(String info) {
int result = 0;
Pattern r = Pattern.compile(" [0-9]+ ");
Matcher m = r.matcher(info);
if (m.find()) {
// output(m.group());
result = changeStringToInt(m.group().trim());
}
return result;
}
/**
* 获取cpu运行信息
*
* @param info
* 截取到的APP信息
* @return 返回CPU占用率,采取double数据格式
*/
public double getCpuInfo(String info) {
String percent = info.substring(0, info.indexOf("%"));
double result = changeStringToDouble(percent.trim());
return result;
}
/**
* 获取cpu运行信息
*
* @param info
* 截取到的APP信息
* @return 返回CPU占用率,采取int数据格式
*/
public int getCpuDate(String info) {
Pattern pattern = Pattern.compile(" [0-9]*%");
Matcher matcher = pattern.matcher(info);
matcher.find();
String date = matcher.group().trim();
return changeStringToInt(date.substring(0, date.length() - 1));
}
public int getVss(String info) {
Pattern pattern = Pattern.compile(" [0-9]+K");
Matcher matcher = pattern.matcher(info);
matcher.find();
String date = matcher.group().trim();
return changeStringToInt(date.substring(0, date.length() - 1));
}
public int getRss(String info) {
Pattern pattern = Pattern.compile("K +[0-9]+K");
Matcher matcher = pattern.matcher(info);
matcher.find();
String date = matcher.group().substring(1, matcher.group().length() - 1);
return changeStringToInt(date.trim());
}
// 把string类型转化为double
public Double changeStringToDouble(String text) {
// return Integer.parseInt(text);
return Double.valueOf(text);
}
// 把string类型转化为int
public int changeStringToInt(String text) {
// return Integer.parseInt(text);
return Integer.valueOf(text);
}
public void output(String text) {// 明显输出
System.out.println(text);
}
public void output(Object... object) {
if (object.length == 1) {
output(object[0].toString());
return;
}
for (int i = 0; i < object.length; i++) {
System.out.println("第" + (i + 1) + "个:" + object[i]);
}
}
}
往期文章精选
- java一行代码打印心形
- Linux性能监控软件netdata中文汉化版
- 接口测试代码覆盖率(jacoco)方案分享
- 性能测试框架
- 如何在Linux命令行界面愉快进行性能测试
- 图解HTTP脑图
- 写给所有人的编程思维
- 测试之JVM命令脑图
- 将json数据格式化输出到控制台
- 如何测试概率型业务接口
- “双花”BUG的测试分享