Thrawl V1.0.0

Thrawl v1.0.0

Adaptive memory management for rooted Android. Tunes swappiness, ZRAM, swap, and LMKD in real time — written in Rust, packaged as a Magisk module.

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What's new

This is the first release. Thrawl is a single thrawld binary that replaces scattered shell scripts with a Rust daemon:

• PSI backend (Kernel 4.20+): reads /proc/pressure/memory, adjusts swappiness dynamically
• Legacy backend (Kernel 3.18 - 4.19): meminfo-based hysteresis state machine
• ZRAM hot-plug: add/remove ZRAM devices, auto-sized from MemTotal
• Swap file management: mkswap/swapon/swapoff with timeout protection
• LMKD tuning: PSI vs minfree property switching
• UFFD GC: Android 12-13 userfaultfd garbage collection
• Persistent logcat: size-based rotation, daemon activity log
• Hot-reload: SIGHUP reloads config without restart
• Stale PID recovery: auto-clean on crash

Install

1. Download thrawl-v1.0.0.zip
2. Open Magisk Manager → Modules → Install from storage
3. Reboot

Or via ADB:

adb push thrawl-v1.0.0.zip /sdcard/
adb shell su -c 'magisk --install-module /sdcard/thrawl-v1.0.0.zip'
adb reboot

Verify

adb shell su -c 'pgrep -af thrawld'

Config

Edit /data/adb/thrawl/config.conf, then reload:

adb shell su -c 'kill -HUP $(cat /data/adb/modules/thrawl/data/flags/thrawld.pid)'

Default config works out of the box. See README for all options.

Requirements

• Magisk 20.4+
• Android 8.0 - 13
• Root access