Tag Archive for 'Minecraft'

Running old versions of Java Minecraft

Published on October 22, 2025 in Computing Notes.

One source for the Java 8 (1.8) runtime is the Oracle Archives page.  Another helpful one is the standard Java download page for the desktop Java Runtime Environment, JRE.

I downloaded the Linux x86 (32-bit) version even though the host is a 64bit Linux.  The reason for that is that at some point in the point in the past Minecraft and various mods and the Forge loader required a 32 bit Java virtual machine (JVM).  It was so problematic to install both 64bit and 32bit via the package managers and manually configure them, that I developed a practice of installing 32-bit Linux so that the Java in the repository would also be 32bit and then everything would be fin.   It was much easier to run 32-bit Java and 32-bit Wine on a 32-bit operating system than reconfigure everything and try to switch between them depending on what was running.

I extracted the zip file from Oracle and then ran the Minecraft server instance with the following command.

home/username/Downloads/Java8_i586/jre1.8.0_461/bin/java -jar /home/username/Minecraft_x86/instances/b1.7.3/b1.7.3.251019/b1.7.3.jar nogui

Running the program that way worked very well.

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Minecraft Survival Multi-Player at memorymatrix.cloud

Published on September 6, 2025 in Gaming Note.

You can play Minecraft Survival Multiplayer. Review the game server’s Changelog to see recent changes.  To play Minecraft, open the game, choose multiplayer, click “Add Server” and type memorymatrix.cloud in the Server Address field. Memory Matrix SMP is a Java-version Minecraft with regularly occurring allowances.   Randomly enchanted books are given out every couple of hours.  Other allowances may occur by request.  For some folks, emeralds are issued, for others name tags, an some even receive XP every 36 minutes.

A view of Jack O Lantern town near world spawn on Memory Matrix SMP

There are no guarantees regarding the server and you play at your own risk.  The server’s status is available from Minecraft Server Status by Anders G. Jørgensen, MCS, & Minehost, among others.

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Changelog for Memory Matrix SMP

Published on July 29, 2025 in Gaming Note.

This post serves as the changelog for the server and will receive future updates posted to it.

Legend:

[+] = Added
[*] = Changed
[^] = Moved
[=] = No Changes
[x] = Deleted
[!] = Bugs
[_] = To Do
[>] Migrated
[<] Migrated

29 July 2025:

[*] Random Books and Gilt Books: changed sweeping to sweeping_edge because the name of this enchantment changed from its historical name [1]

1. Java Edition 1.20.5, Minecraft Wiki

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Minecraft Tweaks

Published on March 16, 2023 in Computing Notes.

To launch

java -Xms2048M -Xmx2048M --add-modules=jdk.incubator.vector -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -jar server-1.21.1.jar nogui
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