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2.4.0

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@github-actions github-actions released this 26 Sep 14:29
· 41 commits to main since this release
v2.4.0
20f3777

ObserverLauncher 2.4.0

A performance and telemetry polish release, driven by real use: hosting a NeoForge modpack server. If the launcher felt heavy while a server was running, or the in-app Performance tab showed nothing useful, this one is for you.

The launcher is much lighter now

The app was quietly burning ~17% CPU even when the server was idle — because it started a fresh PowerShell process every single second just to read the server's memory and CPU. That's gone:

  • The app now keeps one background PowerShell helper and reuses it, instead of spawning a new one every second.
  • Reading the server's process tree is cheaper and more reliable.
  • When the window is hidden, its timers are throttled.

Result: idle CPU drops dramatically, and you no longer see a pile of "Console Window Host" / "Windows PowerShell" processes sitting next to the app in Task Manager.

The Performance tab now actually shows your server

If you host a server started by run.bat (NeoForge / Forge with no .jar), the Performance tab used to show 0% CPU and 0 MB — because it was measuring cmd.exe (the script runner) instead of the real Java process. It now tracks the actual JVM, so the CPU and RAM graphs match what the server is really using (your 4 GB, etc.).

TPS / MSPT show up on NeoForge

NeoForge rejects the old forge tps command, so the launcher gave up on TPS and the graphs stayed empty — even with Spark installed. Now:

  • When the native TPS command is rejected, the launcher automatically uses spark tps instead.
  • Spark prints its numbers across two lines; the launcher now reads both, so TPS and MSPT appear on the Performance tab just like on Paper servers.
  • The chatty spark tps output is hidden from the console so it no longer spams your log.

What to watch out for

  • Nothing to configure — these are all automatic. Just make sure Spark is installed if you want TPS on a NeoForge server that doesn't support forge tps.
  • Everything else — the setup wizard, Java handling, backups, and the MCP / AI tools — is unchanged from 2.3.0.

Full technical changelog (for developers): see CHANGELOG.md → [2.4.0] in the repository.

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