Kurukshetran

Motivation

Integrate JMH (Java Microbenchmarking Harness) with Spring (Boot) and make developing and running benchmarks as easy and convinent as writing tests.

Idea

Wrap the necessary JMH boilerplate code within JUnit to benefit from all the existing test infrastructure Spring (Boot) provides. It should be as easy and convinent to write benchmarks as it is to write tests.

TL;DR;

Kurukshetran

import org.apache.http.HeaderElement;
import org.apache.http.HeaderElementIterator;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.ConnectionKeepAliveStrategy;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;

Kurukshetran

/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *

Kurukshetran

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

1. CPU-bound
2. Blocking IO
3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

Kurukshetran

1. Create a scheduler to add new routes
@Scheduled(fixedRate = 300000)
    public void updateHttpRoutes() {
        Set<HttpRoute> routes = poolingHttpClientConnectionManager.getRoutes();
        for (HttpRoute route : routes) {
            httpMetricsTracker.add(route, poolingHttpClientConnectionManager);
        }
    }

Kurukshetran

import org.apache.http.client.config.RequestConfig;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class ClientHttpPoolConfiguration {

Kurukshetran

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ApacheLogParser {    

Kurukshetran

cat access.log | awk -F\" '{print $2}' | awk '{print $2}' | sed '/^$/d' | sed 's/\?.*//g' | sort | uniq -c | sort -rn > url_hits.txt

Kurukshetran

package de.iteratec;

import org.hibernate.BaseSessionEventListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * Modified to make the output remotely readable; directly use the slf4jLogger we use in our project.
 * Use by calling sessionFactory.getSessionFactoryOptions().getBaselineSessionEventsListenerBuilder().setAutoListener(IteratecStatisticalLoggingSessionEventListener.class);

Kurukshetran

import java.text.*;
import java.io.*;
import java.util.*;

String filename = "oprosnik_" + vars.get("fileNum") + ".csv";

ArrayList strList = new ArrayList();     

try {
    File file = new File(filename);