vr-25 / zram-swap-manager Goto Github PK

Is this configuration item mem_percent=33 # [33], memory limit· the option to control the size of zram?
I'm having problems modifying this option, for example, if I set 33%, the actual memory allocated is about 66% RAM.
My phone has 6G RAM, is the phone you are using for development the 12G RAM version?
Can you tell me the function of this configuration item, vm="swappiness=80 page-cluster=0· What is the function of ·vm="swappiness=80" ?

Will modifying this /sys/module/lowmemorykiller/parameters/minfree
file will change the phone's memory recycling policy?
My phone kills memory when 1GB of memory is left after zRAM is turned off, which leads to underutilized memory, I think it is more appropriate to kill memory when 256MB is left.

Hello!

Thank you for this Magisk module! I was trying to modify the ZRAM size for my device but it simply did not work, the device would freeze every time I tried to use swapoff but your module worked like a charm!

I also tried to modify some other parameters related to swap, for instance:

vm="swappiness=80 page-cluster=0 watermark_scale_factor=125"

but it did not work. I have to add this to a custom service.d script for it to work, maybe it can be used to improve the reliability of your startup scripts as well:

#!/system/bin/sh
while [ "$(getprop sys.boot_completed)" != 1 ]; do
    sleep 1
done
sysctl -w vm.watermark_scale_factor=125

Regards

After installation (magisk --install-module //sdcard/zsm_android_2023-07-17_19.26.51.zip) module got deleted after reboot because here is a folder /data/adb/modules_update/ram-swap-manager with 3 files.

Hello, magisk supports module updates from within the app itself, if the module has proper fields in module.prop and appropriate update.json file upstream (see https://topjohnwu.github.io/Magisk/guides.html). Could you provide these?

Can we have support for KernelSU

cant i disable zram at boot without waiting by edit config.txt ?

It's missing } in line 5, resulting error on accessing in terminal.

zsm does not have an option to show actual compression rate and total size.

easy to obtain:

/sys/devices/virtual/block/zram0/compr_data_size
/sys/devices/virtual/block/zram0/orig_data_size
/sys/devices/virtual/block/zram0/mem_used_total

https://docs.kernel.org/admin-guide/blockdev/zram.html

Default ./service.sh starts zram with following arguments '-dr' which causing infinite log spamming:

https://paste.debian.net/1306119/

65: '[' -x /data/adb/vr25/bin/swapoff ']'
65: >/dev/null 
65: which /data/adb/vr25/bin/swapoff
65: '[' -x /vendor/bin/swapoff ']'
66: eval /vendor/bin/swapoff /dev/block/zram0
66: /vendor/bin/swapoff /dev/block/zram0
66: echo '(i) Trying alternative: /vendor/bin/swapoff...'
(i) Trying alternative: /vendor/bin/swapoff...
65: '[' -x /system/bin/swapoff ']'
66: eval /system/bin/swapoff /dev/block/zram0
66: /system/bin/swapoff /dev/block/zram0
66: echo '(i) Trying alternative: /system/bin/swapoff...'
(i) Trying alternative: /system/bin/swapoff...
65: '[' -x /vendor/bin/swapoff ']'
66: eval /vendor/bin/swapoff /dev/block/zram0
66: /vendor/bin/swapoff /dev/block/zram0
66: echo '(i) Trying alternative: /vendor/bin/swapoff...'
(i) Trying alternative: /vendor/bin/swapoff...
65: '[' -x /sbin/swapoff ']'

'zsm -n' works tho..

EDIT: that why I recommend have 'sleep 1' in a loop scripts to prevent 100% CPU load and battery drain.

After changing config, using zsm -r cannot apply the new config. Instead it will cycle between shrinking and growing swap. I had to reboot the phone everytime.