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FullStack Watchdog

Mod

by telepathicgrunt

Make Watchdog crashes show all the code that was running for all threads

Type

Mod

CurseForge Downloads

21,938,829

CurseForge ID

849817

Modrinth Downloads

2,330,883

Modrinth ID

oZiSDGCi

Last Updated

Jun 11, 2026

Description

This is a tiny **server-sided** mod that makes it so that the logs show more information when the Watchdog system on the server has killed the server due to being deadlocked or stuck so long. The crash report log will now show all of the code that was running at the time of the deadlocked server. In other words, the full stacktrace of all threads instead of the normally truncated (shortened) version.   In theory, this should help with diagnosing what modded code or mixin has caused an "off-thread" to lock up. When a thread locks up, the server thread gets stuck and if it remains stuck for so long, the Watchdog kills it because a tick took too long to complete. **It won't help solve all deadlock issues.** But it might get you just enough info to track down the cause of a few deadlocks. Image below is an example of before and after this mod is put on **(Gallery tab shows image better)**:  ![Example of improvement](https://cdn.modrinth.com/data/oZiSDGCi/images/41969c24917aacdc6741bb68413cb3b81acaa2a2.png)   **Yes you may ship this mod in a modpack.** The client can also have this mod on but it won't do anything on client since the Watchdog system is only ran on servers. You can also run servers with this mod only on the server. Clients without this mod can still connect. **NOTE 1:** NeoForge 20.4.107 and newer already has this mod merged into it! You do not need this mod in NeoForge for 1.20.4 MC or newer! https://github.com/neoforged/NeoForge/pull/512 **NOTE 2:** Fabric API 0.104.0+1.21.2 and newer already has this mod merged into it! You do not need this mod in Fabric for 1.21.2 MC or newer! https://github.com/FabricMC/fabric/pull/4052

Compatibility

Mod Loaders

Fabric Forge Neoforge

Game Versions

1.16.5 1.17.1 1.18 1.18.1 1.18.2 1.19 1.19.1 1.19.2 1.19.3 1.19.4 +9 more

Screenshots

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Included in Modpacks

DawnCraft - Echoes of Legends DawnCraft - Echoes of Legends Better MC [FABRIC] BMC3 Better MC [FABRIC] BMC3 SteamPunk [LPS] SteamPunk [LPS] Better MC Skyblock [BMCS] Better MC Skyblock [BMCS] Better MC [FABRIC] BMC2 Better MC [FABRIC] BMC2 Medieval MC [FORGE] MMC4 Medieval MC [FORGE] MMC4 Better MC [FORGE] BMC1 Better MC [FORGE] BMC1 Better MC [FABRIC] BMC1 Better MC [FABRIC] BMC1 All of Fabric 7 - AOF7 All of Fabric 7 - AOF7 Medieval MC [FABRIC] MMC1 Medieval MC [FABRIC] MMC1 Better MC [FORGE] BMC3 Better MC [FORGE] BMC3 Fantasy Realm Fantasy Realm Fantasy Skies Fantasy Skies Medieval MC [FABRIC] MMC3 Medieval MC [FABRIC] MMC3 Better MC [FORGE] BMC2 Better MC [FORGE] BMC2 Medieval MC [FORGE] MMC1 Medieval MC [FORGE] MMC1 The Ancient Dawn - Prehistoric Journey The Ancient Dawn - Prehistoric Journey Ruthless Frontiers - Grim Harvest Ruthless Frontiers - Grim Harvest SKYMON - Cobblemon SKYMON - Cobblemon Yes Nicer MC [Forge] YNM Yes Nicer MC [Forge] YNM Medieval MC [FABRIC] MMC2 Medieval MC [FABRIC] MMC2 TNP Limitless 7 - LL7 TNP Limitless 7 - LL7 VR Medieval | Immersion plus | [FABRIC] VR Medieval | Immersion plus | [FABRIC] M-Tech M-Tech All of Fabric 6 - AOF6 All of Fabric 6 - AOF6 Path of Truth Path of Truth DawnCraft Ultimate Edition DawnCraft Ultimate Edition Create: Industrialized Tech Create: Industrialized Tech Beyond Fantasy - A Magic RPG Modpack Beyond Fantasy - A Magic RPG Modpack Impostor Syndrome Impostor Syndrome Medieval MC [FORGE] MMC3 Medieval MC [FORGE] MMC3 Doom Modpack - Raze The Nether Doom Modpack - Raze The Nether MC Eternal 2 MC Eternal 2 Otherworld [Dungeons & Dragons] Otherworld [Dungeons & Dragons] TerraFirmaGreg-Modern TerraFirmaGreg-Modern Soulrend - Dark Fantasy RPG Soulslike Soulrend - Dark Fantasy RPG Soulslike DawnCraft - Russian lang DawnCraft - Russian lang Moe's Spooky Jump-scare Simulator Moe's Spooky Jump-scare Simulator DeezCraft Skibidi Edition DeezCraft Skibidi Edition SkyPlus (w Cobblemon) SkyPlus (w Cobblemon) The Ancient Dawn LITE The Ancient Dawn LITE DB3K DB3K Medieval MC [FORGE] MMC2 Medieval MC [FORGE] MMC2 TNP Limitless 6 - LL6 TNP Limitless 6 - LL6 Mystic's Monstrosity - Greedy Edition Mystic's Monstrosity - Greedy Edition Yes Nicer MC [Fabric] YNM Yes Nicer MC [Fabric] YNM Lets Just Say CRAFT - [Christmas] (LJSC) Lets Just Say CRAFT - [Christmas] (LJSC) Creatopia Unbound Creatopia Unbound Steam 'n' Rails Server Modpack Steam 'n' Rails Server Modpack Kingdom's Unbound Official Pack Kingdom's Unbound Official Pack ALBOE! [FABRIC] ALBOE! [FABRIC] Better Aeternium Better Aeternium MC Enhanced [FABRIC] MC Enhanced [FABRIC] Rebirth - The Dead World Rebirth - The Dead World OPKoffee Infused OPKoffee Infused Danknum Opus Danknum Opus RossAndrewsVT's Medieval Project [Discontinued] RossAndrewsVT's Medieval Project [Discontinued] Easycraft (Official) Easycraft (Official)

External Resources

CurseForge Modrinth Source Code Issues