fcamblor

FROM tomcat:7-jre8-alpine

# See https://github.com/jvm-profiling-tools/async-profiler/issues/207
RUN apk update && apk add --no-cache libc6-compat perl openjdk8-dbg

RUN mkdir /usr/local/async-profiler/ &&\
      wget -O /usr/local/async-profiler/async-profiler.tar.gz https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.5/async-profiler-1.5-linux-x64.tar.gz &&\
      cd /usr/local/async-profiler/ &&\
      tar -xvzf async-profiler.tar.gz &&\
      rm -f /usr/local/async-profiler/async-profiler.tar.gz

dpryden

import java.io.IOException;
import java.net.URLClassLoader;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.Path;

/**
 * Example demonstrating a ClassLoader leak.
 *
 * <p>To see it in action, copy this file to a temp directory somewhere,

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD