build-bench

A few bash scripts performing a real-world JVM benchmark. The benchmark measure build times of common maven and gradle projects from github.

Prerequisites

• an installed java jdk version 11

Installing prerequisites

If installing sdkman is an option for you, here's how:

• https://gist.github.com/mike-seger/330a9ce984027253f1e9840da6b68351#install-java-and-maven

Running

The benchmark can be run by issuing the following command:

./run-bench.sh

The benchmark creates a reports directory containing the results.

Compare results

Using this project: https://github.com/mike-seger/bb-reports
any results can be compared by simply copying the reports directory over to the above project and following the instructions.

RAM Disk

A RAM disk can help git operations and downloads on slow disks, such as USB drives. The benchmark results are not affected after the third (of 6) iteration of the benchmark.

OSX

diskutil erasevolume HFS+ 'ramdisk' $(hdiutil attach -nobrowse -nomount ram://4194304)

Linux

fstab:

tmpfs  /mnt/ramdisk  tmpfs  rw,size=25%  0   0

or:

mkdir -p /mnt/ramdisk
mount -t tmpfs -o rw,size=25% tmpfs /mnt/ramdisk

Windows

There exist several tools to create a ramdisk. If using Hiren's Boot CD the X drive is already a ramdisk.

Run using docker

openssl s_client -showcerts -connect repo1.maven.org:443 < /dev/null > certs.txt
openssl x509 -in certs.txt -out certs.der -outform DER
keytool -importcert -file certs.der -keystore ./cacerts

docker run --rm -it -v $(pwd):/home/docker openjdk:11-jdk bash