GlymeraProfiler

Which plugin is slowing down your Hytale server? Find out in 30 seconds — right in your browser. Local only: it never opens a port and never sends anything anywhere.

Most actual version only working for Hytale stable 5 ! Don't miss my other exciting projects — take a look at GlymeraCraft's Profile Discord: https://discord.gg/s5NRFWfxgy

GlymeraProfiler samples your server's threads many times per second, works out which plugin (or the engine) is actually running, and turns it into a clear, per-plugin CPU breakdown. Everything — dashboard, data and flame graph — is baked into a single HTML file you open in any browser. No web server, no account, no setup.

How to use

1. Drop the jar into your server's mods/ folder.
2. In-game as an operator, run /glprof. It profiles for ~30 seconds and writes a report.html into mods/de.glymera_GlymeraProfiler/.
3. Download that file (hosting panel / FTP) and open it in any browser. Done — no ports, no firewall, no config.

What you get

• CPU-capacity bar — the whole bar is your server (all cores); see at a glance how much is in use and how much is spare.
• Per-plugin table — each plugin's % of your whole server, raw CPU (ms/s), and Tick load: how hard it pushes the game's single main thread — the number that actually causes lag, even when other cores sit idle.
• Plain-English explanations on every section — written for server owners, not just developers.
• History graphs — server load (as a share of total capacity) and the plugin mix over time.
• Interactive flame graph — click in to see exactly where the busy time went.
• The profiler's own cost, shown openly (roughly 1 % of a single core).

Privacy & safety

The report is a plain local HTML file. It contains everything it needs, loads nothing from the internet, and the plugin opens no network ports — no uploads, no phone-home, nothing ever leaves your server. Safe to run on a live server: tiny footprint (about 1 % of one CPU core) and operator-only.

Configuration

mods/de.glymera_GlymeraProfiler/config.json:

• reportSeconds — capture length for /glprof (default 30).
• sampleIntervalMs — sampling period (default 100 = 10 Hz); lower it for finer detail.
• historySeconds, flameMaxNodes, flameMaxDepth, enabled.

Good to know

• It's a sampling profiler: numbers are statistical, accurate to within a few percent — perfect for spotting which plugin is heavy.
• /glprof is operator-only; a normal player cannot trigger a report.

Plugin data folder: mods/de.glymera_GlymeraProfiler/