spark
Modrinthspark is a performance profiler for Minecraft clients, servers and proxies.
1.10.187-neoforge · MC 26.3 · Neoforge
Files
1.10.187-neoforge
release1.10.187 (NeoForge 26.x)
26.326.226.1.226.1.1+1neoforge2026-09-19 · 16K downloads
spark-1.10.187-neoforge.jar · 3.7 MB
1.10.187-fabric
release1.10.187 (Fabric 26.x)
26.326.226.1.226.1.1+1fabric2026-09-19 · 402.5K downloads
spark-1.10.187-fabric.jar · 3.7 MB
1.10.187-forge
release1.10.187 (Forge 26.x)
26.326.226.1.226.1.1+1forge2026-09-19 · 5.9K downloads
spark-1.10.187-forge.jar · 3.7 MB
1.10.185-neoforge
release1.10.185 (NeoForge 26.2)
26.226.1.226.1.126.1neoforge2026-09-12 · 1.4K downloads
spark-1.10.185-neoforge.jar · 3.9 MB
1.10.185-fabric
release1.10.185 (Fabric 26.2)
26.226.1.226.1.126.1fabric2026-09-12 · 35.2K downloads
spark-1.10.185-fabric.jar · 3.8 MB
1.10.185-forge
release1.10.185 (Forge 26.2)
26.226.1.226.1.126.1forge2026-09-12 · 578 downloads
spark-1.10.185-forge.jar · 3.9 MB
1.10.173-neoforge
release1.10.173 (NeoForge 26.2)
26.226.1.226.1.126.1neoforge2026-06-18 · 14.9K downloads
spark-1.10.173-neoforge.jar · 3.8 MB
1.10.173-fabric
release1.10.173 (Fabric 26.2)
26.226.1.226.1.126.1fabric2026-06-18 · 407.2K downloads
spark-1.10.173-fabric.jar · 3.7 MB
1.10.173-forge
release1.10.173 (Forge 26.2)
26.226.1.226.1.126.1forge2026-06-18 · 6.2K downloads
spark-1.10.173-forge.jar · 3.8 MB
1.10.172-neoforge
release1.10.172 (NeoForge 26.1)
26.1.226.1.126.1neoforge2026-03-26 · 13K downloads
spark-1.10.172-neoforge.jar · 3.8 MB
1.10.172-fabric
release1.10.172 (Fabric 26.1)
26.1.226.1.126.1fabric2026-03-26 · 210.6K downloads
spark-1.10.172-fabric.jar · 3.7 MB
1.10.172-forge
release1.10.172 (Forge 26.1)
26.1.226.1.126.1forge2026-03-26 · 4.6K downloads
spark-1.10.172-forge.jar · 3.8 MB
1.10.170-neoforge
release1.10.170 (NeoForge 1.21.11)
1.21.11neoforge2026-03-26 · 9.1K downloads
spark-1.10.170-neoforge.jar · 3.8 MB
1.10.170-fabric
release1.10.170 (Fabric 1.21.11)
1.21.11fabric2026-03-26 · 677.9K downloads
spark-1.10.170-fabric.jar · 3.7 MB
1.10.170-forge
release1.10.170 (Forge 1.21.11)
1.21.11forge2026-03-26 · 6.7K downloads
spark-1.10.170-forge.jar · 3.8 MB
1.10.156-neoforge
release1.10.156 (NeoForge 1.21.11)
1.21.11neoforge2025-12-10 · 9.8K downloads
spark-1.10.156-neoforge.jar · 3.8 MB
1.10.156-fabric
release1.10.156 (Fabric 1.21.11)
1.21.11fabric2025-12-10 · 541.5K downloads
spark-1.10.156-fabric.jar · 3.7 MB
1.10.156-forge
release1.10.156 (Forge 1.21.11)
1.21.11forge2025-12-10 · 6.5K downloads
spark-1.10.156-forge.jar · 3.8 MB
1.10.152-neoforge
release1.10.152 (NeoForge 1.21.10)
1.21.101.21.9neoforge2025-10-11 · 7.3K downloads
spark-1.10.152-neoforge.jar · 3.7 MB
1.10.152-fabric
release1.10.152 (Fabric 1.21.10)
1.21.101.21.9fabric2025-10-11 · 373.8K downloads
spark-1.10.152-fabric.jar · 3.7 MB
1.10.152-forge
release1.10.152 (Forge 1.21.10)
1.21.101.21.9forge2025-10-11 · 4.9K downloads
spark-1.10.152-forge.jar · 3.7 MB
1.10.149-forge
release1.10.149 (Forge 1.21.9)
1.21.9forge2025-10-05 · 345 downloads
spark-1.10.149-forge.jar · 3.7 MB
1.10.145-neoforge
release1.10.145 (NeoForge 1.21.9)
1.21.9neoforge2025-10-01 · 555 downloads
spark-1.10.145-neoforge.jar · 3.7 MB
1.10.145-fabric
release1.10.145 (Fabric 1.21.9)
1.21.9fabric2025-10-01 · 17.2K downloads
spark-1.10.145-fabric.jar · 3.7 MB
1.10.142-neoforge
release1.10.142 (NeoForge 1.21.8)
1.21.81.21.71.21.6neoforge2025-07-21 · 7.5K downloads
spark-1.10.142-neoforge.jar · 3.7 MB
1.10.142-fabric
release1.10.142 (Fabric 1.21.8)
1.21.81.21.71.21.6fabric2025-07-21 · 250.8K downloads
spark-1.10.142-fabric.jar · 3.6 MB
1.10.142-forge
release1.10.142 (Forge 1.21.8)
1.21.81.21.71.21.6forge2025-07-21 · 4.5K downloads
spark-1.10.142-forge.jar · 3.7 MB
1.10.140-neoforge
release1.10.140 (NeoForge 1.21.7)
1.21.71.21.6neoforge2025-06-30 · 906 downloads
spark-1.10.140-neoforge.jar · 3.6 MB
1.10.140-fabric
release1.10.140 (Fabric 1.21.7)
1.21.71.21.6fabric2025-06-30 · 29K downloads
spark-1.10.140-fabric.jar · 3.6 MB
1.10.140-forge
release1.10.140 (Forge 1.21.7)
1.21.71.21.6forge2025-06-30 · 736 downloads
spark-1.10.140-forge.jar · 3.6 MB
1.10.139-neoforge
release1.10.139 (NeoForge 1.21.6)
1.21.6neoforge2025-06-18 · 632 downloads
spark-1.10.139-neoforge.jar · 3.6 MB
1.10.139-fabric
release1.10.139 (Fabric 1.21.6)
1.21.6fabric2025-06-18 · 13.8K downloads
spark-1.10.139-fabric.jar · 3.6 MB
1.10.139-forge
release1.10.139 (Forge 1.21.6)
1.21.6forge2025-06-18 · 410 downloads
spark-1.10.139-forge.jar · 3.6 MB
1.10.138-fabric
release1.10.138 (Fabric 1.21.5)
1.21.5fabric2025-05-26 · 98.1K downloads
spark-1.10.138-fabric.jar · 3.6 MB
1.10.138-neoforge
release1.10.138 (NeoForge 1.21.5)
1.21.5neoforge2025-05-26 · 25.5K downloads
spark-1.10.138-neoforge.jar · 3.6 MB
1.10.138-forge
release1.10.138 (Forge 1.21.5)
1.21.5forge2025-05-26 · 2.3K downloads
spark-1.10.138-forge.jar · 3.6 MB
1.10.129-forge
release1.10.129 (Forge 1.21.5)
1.21.5forge2025-03-27 · 2.6K downloads
spark-1.10.129-forge.jar · 3.5 MB
1.10.128-neoforge
release1.10.128 (NeoForge 1.21.5)
1.21.5neoforge2025-03-26 · 2.1K downloads
spark-1.10.128-neoforge.jar · 3.5 MB
1.10.128-fabric
release1.10.128 (Fabric 1.21.5)
1.21.5fabric2025-03-26 · 97.7K downloads
spark-1.10.128-fabric.jar · 3.4 MB
1.10.124-neoforge-1.21.1
release1.10.124 (NeoForge 1.21.1)
1.21.1neoforge2025-02-23 · 2.1M downloads
spark-1.10.124-neoforge.jar · 3.5 MB
1.10.121-neoforge
release1.10.121 (NeoForge 1.21.4)
1.21.4neoforge2024-12-07 · 94.5K downloads
spark-1.10.121-neoforge.jar · 3.5 MB
1.10.121-fabric
release1.10.121 (Fabric 1.21.4)
1.21.4fabric2024-12-07 · 324.1K downloads
spark-1.10.121-fabric.jar · 3.4 MB
1.10.121-forge
release1.10.121 (Forge 1.21.4)
1.21.4forge2024-12-07 · 6.6K downloads
spark-1.10.121-forge.jar · 3.5 MB
1.10.120-neoforge
release1.10.120 (NeoForge 1.21.4)
1.21.4neoforge2024-12-04 · 206 downloads
spark-1.10.120-neoforge.jar · 3.5 MB
1.10.120-fabric
release1.10.120 (Fabric 1.21.4)
1.21.4fabric2024-12-04 · 2.7K downloads
spark-1.10.120-fabric.jar · 3.4 MB
1.10.119-neoforge
release1.10.119 (NeoForge 1.21.3)
1.21.3neoforge2024-11-21 · 852 downloads
spark-1.10.119-neoforge.jar · 3.5 MB
1.10.119-fabric
release1.10.119 (Fabric 1.21.3)
1.21.3fabric2024-11-21 · 27.6K downloads
spark-1.10.119-fabric.jar · 3.4 MB
1.10.119-forge
release1.10.119 (Forge 1.21.3)
1.21.3forge2024-11-21 · 1.1K downloads
spark-1.10.119-forge.jar · 3.5 MB
1.10.115-neoforge
release1.10.115 (NeoForge 1.21.3)
1.21.3neoforge2024-10-26 · 810 downloads
spark-1.10.115-neoforge.jar · 3.5 MB
1.10.115-fabric
release1.10.115 (Fabric 1.21.3)
1.21.3fabric2024-10-26 · 13.1K downloads
spark-1.10.115-fabric.jar · 3.4 MB
1.10.115-forge
release1.10.115 (Forge 1.21.3)
1.21.3forge2024-10-26 · 441 downloads
spark-1.10.115-forge.jar · 3.5 MB
1.10.113-neoforge
release1.10.113 (NeoForge 1.21.2)
1.21.2neoforge2024-10-22 · 585 downloads
spark-1.10.113-neoforge.jar · 3.5 MB
1.10.113-fabric
release1.10.113 (Fabric 1.21.2)
1.21.2fabric2024-10-22 · 17.4K downloads
spark-1.10.113-fabric.jar · 3.4 MB
1.10.109-neoforge
release1.10.109 (NeoForge 1.21.1)
1.21.11.21neoforge2024-09-26 · 33.7K downloads
spark-1.10.109-neoforge.jar · 3.5 MB
1.10.109-fabric
release1.10.109 (Fabric 1.21.1)
1.21.11.21fabric2024-09-26 · 2M downloads
spark-1.10.109-fabric.jar · 3.4 MB
1.10.109-forge
release1.10.109 (Forge 1.21.1)
1.21.11.21forge2024-09-26 · 21.3K downloads
spark-1.10.109-forge.jar · 3.5 MB
1.10.97-neoforge
release1.10.97 (NeoForge 1.21.1)
1.21.11.21neoforge2024-08-12 · 5.5K downloads
spark-1.10.97-neoforge.jar · 3.5 MB
1.10.97-fabric
release1.10.97 (Fabric 1.21.1)
1.21.11.21fabric2024-08-12 · 73K downloads
spark-1.10.97-fabric.jar · 3.4 MB
1.10.97-forge
release1.10.97 (Forge 1.21.1)
1.21.11.21forge2024-08-12 · 1.2K downloads
spark-1.10.97-forge.jar · 3.5 MB
1.10.73-neoforge
release1.10.73 (NeoForge 1.21)
1.21neoforge2024-06-16 · 1.8K downloads
spark-1.10.73-neoforge.jar · 3.3 MB
1.10.73-fabric
release1.10.73 (Fabric 1.21)
1.21fabric2024-06-16 · 270.1K downloads
spark-1.10.73-fabric.jar · 3.3 MB
1.10.73-forge
release1.10.73 (Forge 1.21)
1.21forge2024-06-16 · 1.2K downloads
spark-1.10.73-forge.jar · 3.3 MB
1.10.66-forge
release1.10.66 (Forge 1.20.6)
1.20.61.20.5forge2024-05-06 · 2.6K downloads
spark-1.10.66-forge.jar · 3.0 MB
1.10.65-neoforge
release1.10.65 (NeoForge 1.20.6)
1.20.61.20.5neoforge2024-04-29 · 1K downloads
spark-1.10.65-neoforge.jar · 3.0 MB
1.10.65-fabric
release1.10.65 (Fabric 1.20.6)
1.20.61.20.5fabric2024-04-29 · 41.6K downloads
spark-1.10.65-fabric.jar · 2.9 MB
1.10.64-fabric
release1.10.64 (Fabric 1.20.5)
1.20.5fabric2024-04-23 · 2K downloads
spark-1.10.64-fabric.jar · 2.9 MB
1.10.61-neoforge
release1.10.61 (NeoForge 1.20.4)
1.20.41.20.3neoforge2024-04-07 · 3.4K downloads
spark-1.10.61-neoforge.jar · 3.0 MB
1.10.58-fabric
release1.10.58 (Fabric 1.20.4)
1.20.41.20.3fabric2023-12-11 · 210.1K downloads
spark-1.10.58-fabric.jar · 2.9 MB
1.10.58-forge
release1.10.58 (Forge 1.20.4)
1.20.41.20.3forge2023-12-11 · 3.9K downloads
spark-1.10.58-forge.jar · 3.0 MB
1.10.57-fabric
release1.10.57 (Fabric 1.20.3)
1.20.3fabric2023-12-06 · 1.6K downloads
spark-1.10.57-fabric.jar · 2.9 MB
1.10.54-fabric
release1.10.54 (Fabric 1.20.2)
1.20.2fabric2023-09-22 · 94.2K downloads
spark-1.10.54-fabric.jar · 2.9 MB
1.10.54-forge
release1.10.54 (Forge 1.20.2)
1.20.2forge2023-09-22 · 3.5K downloads
spark-1.10.54-forge.jar · 3.0 MB
1.10.53-fabric
release1.10.53 (Fabric 1.20.1)
1.20.11.20fabric2023-09-05 · 8.3M downloads
spark-1.10.53-fabric.jar · 2.9 MB
1.10.53-forge
release1.10.53 (Forge 1.20.1)
1.20.11.20forge2023-09-05 · 6.7M downloads
spark-1.10.53-forge.jar · 3.0 MB
1.10.42-fabric
release1.10.42 (Fabric 1.20.1)
1.20.11.20fabric2023-06-14 · 52.8K downloads
spark-1.10.42-fabric.jar · 2.8 MB
1.10.42-forge
release1.10.42 (Forge 1.20.1)
1.20.11.20forge2023-06-14 · 16.9K downloads
spark-1.10.42-forge.jar · 2.8 MB
1.10.41-fabric
release1.10.41 (Fabric 1.20)
1.20fabric2023-06-08 · 9.5K downloads
spark-1.10.41-fabric.jar · 2.8 MB
1.10.41-forge
release1.10.41 (Forge 1.20)
1.20forge2023-06-08 · 348 downloads
spark-1.10.41-forge.jar · 2.8 MB
1.10.39-fabric
release1.10.39 (Fabric 1.18.2)
1.18.2fabric2023-05-11 · 20.6K downloads
spark-1.10.39-fabric.jar · 2.8 MB
1.10.38-forge
release1.10.38 (Forge 1.18.2)
1.18.2forge2023-04-24 · 215.5K downloads
spark-1.10.38-forge.jar · 2.8 MB
1.10.38-fabric
release1.10.38 (Fabric 1.18.2)
1.18.2fabric2023-04-24 · 273 downloads
spark-1.10.38-fabric.jar · 2.8 MB
1.10.37-fabric
release1.10.37 (Fabric 1.19.4)
1.19.41.19.31.19.21.19.1+1fabric2023-04-24 · 403.5K downloads
spark-1.10.37-fabric.jar · 2.8 MB
1.10.37-forge
release1.10.37 (Forge 1.19.4)
1.19.41.19.31.19.21.19.1+1forge2023-04-24 · 307.1K downloads
spark-1.10.37-forge.jar · 2.8 MB
1.10.34-fabric
release1.10.34 (Fabric 1.19.4)
1.19.41.19.31.19.21.19.1+1fabric2023-03-15 · 8.3K downloads
spark-1.10.34-fabric.jar · 2.8 MB
1.10.34-forge
release1.10.34 (Forge 1.19.4)
1.19.41.19.31.19.21.19.1+1forge2023-03-15 · 1.3K downloads
spark-1.10.34-forge.jar · 2.8 MB
1.10.33-fabric
release1.10.33 (Fabric 1.19.3)
1.19.31.19.21.19.11.19fabric2023-03-13 · 577 downloads
spark-1.10.33-fabric.jar · 2.8 MB
1.10.33-forge
release1.10.33 (Forge 1.19.3)
1.19.31.19.21.19.11.19forge2023-03-13 · 191 downloads
spark-1.10.33-forge.jar · 2.8 MB
1.10.29-fabric
release1.10.29 (Fabric 1.19.3)
1.19.31.19.21.19.11.19fabric2023-02-05 · 8.3K downloads
spark-1.10.29-fabric.jar · 2.8 MB
1.10.29-forge
release1.10.29 (Forge 1.19.3)
1.19.31.19.21.19.11.19forge2023-02-05 · 575 downloads
spark-1.10.29-forge.jar · 2.8 MB
1.10.17-fabric
release1.10.17 (Fabric 1.19.3)
1.19.31.19.21.19.11.19fabric2022-12-10 · 5.8K downloads
spark-1.10.17-fabric.jar · 2.7 MB
1.10.17-forge
release1.10.17 (Forge 1.19.3)
1.19.31.19.21.19.11.19forge2022-12-10 · 753 downloads
spark-1.10.17-forge.jar · 2.7 MB
1.9.45-fabric
release1.9.45 (Fabric 1.19.2)
1.19.21.19.11.19fabric2022-10-29 · 3.6K downloads
spark-1.9.45-fabric.jar · 2.6 MB
1.9.45-forge
release1.9.45 (Forge 1.19.2)
1.19.21.19.11.19forge2022-10-29 · 1.3K downloads
spark-1.9.45-forge.jar · 2.7 MB
1.9.42-fabric
release1.9.42 (Fabric 1.19.2)
1.19.21.19.11.19fabric2022-10-15 · 1.5K downloads
spark-1.9.42-fabric.jar · 2.6 MB
1.9.42-forge
release1.9.42 (Forge 1.19.2)
1.19.21.19.11.19forge2022-10-15 · 1K downloads
spark-1.9.42-forge.jar · 2.7 MB
1.9.40-fabric
release1.9.40 (Fabric 1.19.2)
1.19.21.19.11.19fabric2022-09-23 · 958 downloads
spark-1.9.40-fabric.jar · 2.6 MB
1.9.40-forge
release1.9.40 (Forge 1.19.2)
1.19.21.19.11.19forge2022-09-23 · 355 downloads
spark-1.9.40-forge.jar · 2.7 MB
1.9.36-forge
release1.9.36 (Forge 1.19.2)
1.19.21.19.11.19forge2022-09-18 · 236 downloads
spark-1.9.36-forge.jar · 2.6 MB
1.9.36-fabric
release1.9.36 (Fabric 1.19.2)
1.19.21.19.11.19fabricquilt2022-09-18 · 14K downloads
spark-1.9.36-fabric.jar · 2.7 MB
1.9.26-fabric
release1.9.26 (Fabric 1.19)
1.19fabric2022-07-17 · 2.5K downloads
spark-1.9.26-fabric.jar · 3.3 MB
Files are delivered unmodified from Modrinth's servers and verified against the SHA-512 hash published by the project. The project's license applies to every file; check it before redistributing.
About
spark is a performance profiler for Minecraft clients, servers and proxies.
Useful Links
- Website - browse the project homepage
- Documentation - read documentation and usage guides
- Downloads - latest plugin/mod downloads
spark is proudly sponsored by BisectHosting.
BisectHosting are Minecraft server hosting experts, ready to help you create and host your very own server! They are a trusted and well-established hosting provider in the community, and provide an outstanding level of service that we are happy to recommend. There is a special 25% off discount available for spark users - click the link above to create your server today.
What does spark do?
spark is made up of three separate components:
- CPU Profiler: Diagnose performance issues.
- Memory Inspection: Diagnose memory issues.
- Server Health Reporting: Keep track of overall server health.
⚡ CPU Profiler
spark's profiler can be used to diagnose performance issues: "lag", low tick rate, high CPU usage, etc.
It is:
- Lightweight - can be ran in production with minimal impact.
- Easy to use - no configuration or setup necessary, just install the plugin.
- Quick to produce results - running for just ~30 seconds is enough to produce useful insights into problematic areas for performance.
- Customisable - can be tuned to target specific threads, sample at a specific interval, record only "laggy" periods, etc
- Highly readable - simple tree structure lends itself to easy analysis and interpretation. The viewer can also apply deobfuscation mappings.
It works by sampling statistical data about the systems activity, and constructing a call graph based on this data. The call graph is then displayed in an online viewer for further analysis by the user.
There are two different profiler engines:
- Native
AsyncGetCallTrace+perf_events- uses async-profiler (only available on Linux x86_64 systems) - Built-in Java
ThreadMXBean- an improved version of the popular WarmRoast profiler by sk89q.
⚡ Memory Inspection
spark includes a number of tools which are useful for diagnosing memory issues with a server.
- Heap Summary - take & analyse a basic snapshot of the servers memory
- A simple view of the JVM's heap, see memory usage and instance counts for each class
- Not intended to be a full replacement of proper memory analysis tools. (see below)
- Heap Dump - take a full (HPROF) snapshot of the servers memory
- Dumps (& optionally compresses) a full snapshot of JVM's heap.
- This snapshot can then be inspected using conventional analysis tools.
- GC Monitoring - monitor garbage collection activity on the server
- Allows the user to relate GC activity to game server hangs, and easily see how long they are taking & how much memory is being free'd.
- Observe frequency/duration of young/old generation garbage collections to inform which GC tuning flags to use
⚡ Server Health Reporting
spark can report a number of metrics summarising the servers overall health.
These metrics include:
- TPS - ticks per second, to a more accurate degree indicated by the /tps command
- Tick Durations - how long each tick is taking (min, max and average)
- CPU Usage - how much of the CPU is being used by the server process, and by the overall system
- Memory Usage - how much memory is being used by the process
- Disk Usage - how much disk space is free/being used by the system
As well as providing tick rate averages, spark can also monitor individual ticks - sending a report whenever a single tick's duration exceeds a certain threshold. This can be used to identify trends and the nature of performance issues, relative to other system or game events.
Usage
To install, just add the .jar file to your mods directory.
Information about how to use commands can be found in the docs.
If you’d like help analysing a profiling report, or just want to chat, feel free to join us on Discord.
Guides
There are a few small "guides" available in the docs, covering the following topics.