KAllFix

Overview

• This project is used to fix and optimize issues caused by other mods, and it works on servers.
• The project contains two main parts: k_all_fix and k_multi_threading, with features mainly controlled by JVM parameters.
• No regular config file is provided; configuration is mainly done through startup parameters.
• Client-side usage is supported from 1.0.4.0 onward (requires JVM parameter -DKMT_Client=true).
• Under a multi-mod and single-threaded baseline environment, cause no issues is not guaranteed, but you could create an ISSUE on Github and the author will fix it quickly.
• With some mod combinations, clients may still need to install this mod even if it has no visible effect.

Features and Use Cases

Optimizations

• Optimizes performance for Upgraded Additional Trims.
• Optimizes the April Fools date-check related overhead in Atmospheric.
• Optimizes performance for Upgraded Core.
• Optimizes chicken-coop AI performance in [[Let's Do] Farm & Charm](https://modrinth.com/mod/lets-do-farm-charm).
• Optimize performance for Event Wrapper
• Optimize performance for Create：FluidLogistic
• -DKAF-fluidlogistics.DisabledDynamicUp=true to disable updating old id, if not do so, may cause to preformance slow down.
• Optimize AE2 game computation
• Optimize performance for ItemStack.issameItemsameTags
• Optimize performance of PPMO2
• Delete useless code of Apotheosis and Create:Connected

Fixes

• Fixes performance issues related to entity counts in L_Ender's Cataclysm when used on servers with MineColonies.
• Fixes excessive invalid packet sending in [[Let's Do] Farm & Charm](https://modrinth.com/mod/lets-do-farm-charm).
• Fixes compatibility issues between Biolith and some MCreator worldgen mods (e.g., Terramity).
• Fixes compatibility issues between Gregicality Rocketry and Canary, but collision-box issues may still occur at space-station borders.
• Fixes the issue where Petrolpark's Library 1.4.2 is unusable in some Java environments; this fix can be disabled with -DKAF-DisablePetrolpark=false.
• Fixes/optimizes magnetic-field-related performance issues in Alex's Caves.
• Fixes mixin performance issues in Create: Diesel Generators.
• Fixes server crashes in older Destroy versions caused by database connection failures.

Multithreading

Introduction

• Multithreading supports includes block ticks, block entity ticks, entities, dimensions, player packet receiving (manual toggle, client-only), and player login (manual toggle), and also fixes some problematic single-threaded mods by applying multithreading.
• Multithreading is enabled by default on the server side.
• In multithreaded scenarios, thread-pool interception or limit-exceeded errors may appear, but they usually do not crash the server.
• It is recommended to manually set -DKMT-threadMax=[CPU thread count]; otherwise world generation may be frozen. If freezes still occurs after setting it, increase the value higher.
• Before 1.0.4.0, clients cannot use multithreading; from 1.0.4.0 onward, clients can enable it via -DKMT_Client=true.
• After 1.0.3.3, ParaServerChunkProvider, TaskRun, and some chunk generation code depend more heavily on C2 compilation (the JVM will enter C2 automatically after running for a while).
• In Windows Server 2022 Datacenter 21H2 20348.3091 (author's environment), rare thread scheduling anomalies may occur and causes abnormally high CPU usage; the solution is to restart the server.

Related JVM Parameters

• -DKMT-threadMax=[number]
• Sets thread-pool thread count.
• -DKMT-callMax=[number]
• Sets the default maximum number of threads that multithreaded tasks may use.
• -DKMT-ThreadpoolKeepAliveTime=[milliseconds]
• Sets how long idle threads are kept before recycling.
• -DKMT_D=[any characters]
• Disables multithreading.
• -DKMT-OpenVanillaServerChunkCache=true
• Forces the vanilla ServerChunkCache fix path (added in 1.0.5.3).

JVM Parameter Overview (all retained)

Basic and General

• -DKAllFix_D=[any characters]
• Disables KAllFix.
• -DKMT_Client=true
• Enables multithreading-related features on the client side (1.0.4.0+).
• -DKAF-DisablePetrolpark=false
• Disables the Petrolpark's Library 1.4.2 related fix.

Connection and Timeout

• -DKAF-ClientboundKeepAlivePacket_Max=[milliseconds]
• Changes the timing requirement for ClientboundKeepAlivePacket (default 15 seconds; vanilla must be <30 seconds or the player is kicked for timeout).
• -DKAF-ServerTimeout=[seconds]
• Sets server connection timeout.
• May be ineffective in some cases (both parameters are needed because Forge's forge.readTimeout only covers server packet-read timeout, not client/server network threads with players).
• -Dforge.readTimeout=[seconds]
• Forge packet-read timeout parameter (used together with the previous parameter).