A versatile zRAM swap manager with dynamic swappiness – for Android and GNU/Linux systems.
Contents
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Install/Upgrade
Android (Magisk module)
Flash the zip or run su -c sh /path/to/install.sh [--start]
GNU/Linux
sudo sh /path/to/install.sh [--start]
Uninstall
Android
su -c /data/adb/modules/zram-swap-manager/uninstall.sh [[--stop] [--keep-config]]
GNU/Linux
sudo zram-swap-manager-uninstall [[--stop] [--keep-config]]
Config
Android
/data/adb/vr25/zram-swap-manager-data/config.txt
GNU/Linux
/etc/zram-swap-manager.conf
Default Config
config_ver=202111230 # used for patching; do not modify!
comp_algorithm=auto # [auto] -> zstd (288) | lz4 (210) | lzo-rle (212) | lzo (211)
comp_ratio=210 # [210], irrelevant when comp_algorithm=auto
mem_percent=33 # [33], memory limit
dynamic_swappiness=true # [true], swappiness <--> /proc/loadavg
load_sampling_rate=60 # [60] read /proc/loadavg every x seconds
high_load_threshold=90 # [90], %
high_load_swappiness=80 # [80]
medium_load_threshold=45 # [45], %
medium_load_swappiness=90 # [90]
low_load_threshold=0 # [0], %
low_load_swappiness=100 # [100]
vm="swappiness=80 page-cluster=0"
# android's low memory killer (deprecated in favor of lmkd in recent OS versions)
# write /sys/module/lowmemorykiller/parameters/minfree "CUSTOM PARAMETERS GO HERE"
Terminal
Run zsm or zram-swap-manager for help.
Benchmarks
| Compressor | Ratio | Compression | Decompression |
|---|---|---|---|
| zstd 1.3.4 -1 | 2.877 | 470 MB/s | 1380 MB/s |
| zlib 1.2.11 -1 | 2.743 | 110 MB/s | 400 MB/s |
| brotli 1.0.2 -0 | 2.701 | 410 MB/s | 430 MB/s |
| quicklz 1.5.0 -1 | 2.238 | 550 MB/s | 710 MB/s |
| lzo1x 2.09 -1 | 2.108 | 650 MB/s | 830 MB/s |
| lz4 1.8.1 | 2.101 | 750 MB/s | 3700 MB/s |
| snappy 1.1.4 | 2.091 | 530 MB/s | 1800 MB/s |
| lzf 3.6 -1 | 2.077 | 400 MB/s | 860 MB/s |
Notes/Tips
On some Android systems, one may want to delay initialization to ensure defaults and/or third party tweaks are overridden. This can be done by adding `sleep 90` or a more elaborate logic to config.Download z-RAM Swap Manager Magisk Module
You can get the latest version of z-RAM Swap Manager by clicking the below link:
Latest Version
v2023.7.17
v2023.7.17 (202307170)
- KernelSu support
- Updated documentation
- Various fixes & optimizations
Here’s all the available versions:
v2023.7.17
v2023.7.17 (202307170)
- KernelSu support
- Updated documentation
- Various fixes & optimizations