grafana jpprof 试用

grafana jpprof 是为了方便grafana phlare 对于java 语言支持开发的一个包，可以让java 语言方便的自持pprof 格式的内容，进行持续性能优化
以下是一个简单的试用

环境准备

• pom 文件

 

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

 

    <groupId>com.dalong</groupId>

    <artifactId>jjprofilerapps</artifactId>

    <version>1.0-SNAPSHOT</version>

 

    <properties>

        <maven.compiler.source>11</maven.compiler.source>

        <maven.compiler.target>11</maven.compiler.target>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    </properties>

 

    <dependencies>

        <dependency>

            <groupId>com.grafana</groupId>

            <artifactId>jpprof</artifactId>

            <version>0.1.0</version>

        </dependency>

        <dependency>

            <groupId>com.sparkjava</groupId>

            <artifactId>spark-core</artifactId>

            <version>2.9.4</version>

        </dependency>

    </dependencies>

    <repositories>

        <repository>

            <name>maven</name>

            <id>maven</id>

            <releases>

                <enabled>true</enabled>

            </releases>

            <snapshots>

                <enabled>true</enabled>

            </snapshots>

            <url>https://repo1.maven.org/maven2/</url>

        </repository>

    </repositories>

    <build>

        <finalName>myinstance-app</finalName>

        <plugins>

            <plugin>

                <groupId>com.google.cloud.tools</groupId>

                <artifactId>jib-maven-plugin</artifactId>

                <version>3.3.0</version>

                <configuration>

                    <from>

                        <image>eclipse-temurin:11-jdk-alpine</image>

                    </from>

                    <to>

                        <image>dalongrong/jpprof-learning</image>

                    </to>

                </configuration>

                <executions>

                    <execution>

                        <phase>package</phase>

                        <goals>

                            <goal>build</goal>

                        </goals>

                    </execution>

                </executions>

            </plugin>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-shade-plugin</artifactId>

                <version>2.3</version>

                <executions>

                    <!-- Run shade goal on package phase -->

                    <execution>

                        <phase>package</phase>

                        <goals>

                            <goal>shade</goal>

                        </goals>

                        <configuration>

                            <transformers>

                                <!-- add Main-Class to manifest file -->

                                <transformer

                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">

                                    <mainClass>com.dalong.Application</mainClass>

                                </transformer>

                            </transformers>

                        </configuration>

                    </execution>

                </executions>

            </plugin>

        </plugins>

    </build>

</project>

• 入口代码
  基于了spark java web 框架

 

package com.dalong;

 

import jpprof.CPUProfiler;

import spark.Service;

 

import java.io.IOException;

import java.time.Duration;

 

public class Application {

    public static void main(String[] args) throws IOException {

        Service service = Service.ignite();

        service.port(9999);

        // 内容参考子PprofHttpHandler 做了一些修改，方便支持sparkjava

        service.get("/debug/pprof/profile", (req, res) -> {

            String seconds = req.queryParams("seconds");

            Duration duration = Duration.ofSeconds((long) Integer.parseInt(seconds));

            try {

                res.header("Content-Encoding", "gzip");

                res.status(200);

                CPUProfiler.start(duration, res.raw().getOutputStream());

            } catch (Exception var9) {

                res.status(500);

            } finally {

                res.raw().getOutputStream().close();

            }

            return null;

        });

        service.get("/demo", (request, response) -> {

            return "dalongdemo";

        });

    }

}

使用

启动服务，并进行压测，然后使用go pprof 获取pprof 内容，显示效果

• 压测

ab -n 4000 -c 100 http://localhost:9999/demo

• 获取内容

go tool pprof -http :6060 http://localhost:9999/debug/pprof/profile\?seconds\=10

• 效果

说明

jpprof 是基于jdk 11 开发的，所以目前会有一些问题（尤其是国内还是jdk 8 为主流的时候）,jpprof 是一个很不错的工具包，让我们可以体验golang pprof 便捷的能力
一个现成可以运行试用的镜像dalongrong/jpprof-learning

参考资料

https://sparkjava.com/documentation#redirects
https://github.com/grafana/JPProf
https://github.com/rongfengliang/grafana-jpprof-learning