https://github.com/tytydraco/KTweak

A no-nonsense kernel tweak script for Linux and Android systems, backed by evidence.
https://github.com/tytydraco/KTweak

kernel kernel-optimizers kernel-tweak

Last synced: 5 days ago
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A no-nonsense kernel tweak script for Linux and Android systems, backed by evidence.

• Host: GitHub
• URL: https://github.com/tytydraco/KTweak
• Owner: tytydraco
• License: bsd-2-clause
• Created: 2020-08-02T10:38:24.000Z (over 4 years ago)
• Default Branch: balance
• Last Pushed: 2022-08-15T19:51:23.000Z (about 2 years ago)
• Last Synced: 2024-08-01T19:58:17.106Z (3 months ago)
• Topics: kernel, kernel-optimizers, kernel-tweak
• Language: Shell
• Homepage:
• Size: 173 KB
• Stars: 394
• Watchers: 46
• Forks: 80
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

        
# KTweak

A no-nonsense kernel tweak script for Linux and Android systems, backed by evidence.

# Another "kernel optimizer"?

No. Well, yes. However, a "kernel optimizer" is a poor way to put it. KTweak performs kernel adjustments based on facts and evidence, unlike other optimizers with poorly written or heavily obfuscated code.

* [NFS Injector](https://github.com/Magisk-Modules-Grave/nfsinjector) uses closed source, compiled binaries with various typos in the README. It also provides a "pro" version that costs money.

* [MAGNETAR](https://github.com/Magisk-Modules-Grave/MAGNETAR) also uses closed source, compiled binaries. I'd love to say more about this, but I can't even find out what the module even does.

* [FDE.AI](https://forum.xda-developers.com/apps/magisk/beta-feradroid-engine-v0-19-ultimate-t3284421) also uses closed source, compiled binaries with a paid variant.

* [LKT](https://github.com/Magisk-Modules-Grave/legendary_kernel_tweaks/blob/master/common/system.prop) sets random nonsensical build.props that don't even exist.

* [ZeetaTweaks](https://t.me/zeetaaprojbot) is a clone of KTweak with the values changed. As of the V11 zip, it disables essential system services, deletes files permanently from /data/data, kills perfd (which is the userspace boosting daemon), disables SELinux, disables fsync, and various other detrimental changes.

# What's different about KTweak?

Unlike other "kernel optimizers", KTweak is:

* Entirely open source with no compiled components

* Concise, at less than 200 lines long

* Backed by benchmarks and evidence

* Designed by an experienced kernel developer

* Non-intrusive and completely systemless

# Benchmarks

The following benchmarks were performed on a OnePlus 7 Pro running the stock kernel provided by the OEM on Android 10. **KTweak sacrifices throughput for latency**, since latency correlates to UI / UX smoothness. This explains the slight regression with the scheduler throughput.

### Scheduler latency via `schbench` (lower is better)

- Stock:

`50.0th: 4052

75.0th: 14288

90.0th: 26848

95.0th: 32960

*99.0th: 45120

99.5th: 49856

99.9th: 59200

min=0, max=73600`

- KTweak:

`50.0th: 1054

75.0th: 1790

90.0th: 2628

95.0th: 3836

*99.0th: 8880

99.5th: 11472

99.9th: 18080

min=0, max=32781`

### Synthmark Latencymark (lower is better)

- Stock: 10 / 12

- KTweak: 4 / 4

### Scheduler throughput via `perf bench sched messaging` (lower is better)

- Stock: 0.331 seconds

- KTweak: 0.808 seconds

### Scheduler throughput via `perf bench sched pipe` (lower is better)

- Stock: 16.159 seconds

- KTweak: 18.599 seconds

# The Tweaks

Head over to the [script itself](ktweak) to learn what everything does. It is documented in the comments.

# Contact

You can find me on telegram at @tytydraco.

Feel free to email me at [email protected].

Join the releases channel at @ktweak, or the discussion channel at @ktweak_discussion.