Originally Posted by chuckhriczko

Im using it on the AOSP 2.0.1 rom for the CDMA Hero. I don't notice a whole lot of difference.

Did you have any improvement? Would be soooo cool if someone would include this into the ROMs.


BB.

How do I edit the minfree file? I have tried looking for a guide on using adb but haven't found anything apart from how to root my hero. (which is already done)

I also looked in the new sticky wiki, but nothing there.

Do I make these changes via adb? or something else... a little heads up would be great. Just point me in the right direction and I will be fine.

I am keen to get my hands into this but its all a little alien right now.

Thanks.

@booon: Like all entries under /sys/ "minfree" is kind of a virtual file. It looks like a file but is used to set or get parameters for the kernel. Therefore all changes there will be gone after a reboot.

How to edit:

# Step 1:
# On your computer in a command line window open a shell via adb:
#
adb shell

# Step 2:
# View the current content of minfree (i.e. the current settings)
# ('cat' just prints the content of any file to the console)
#
cat /sys/module/lowmemorykiller/parameters/minfree

# Step 3:
# Overwrite the 'file' with new values, using echo:
# (of course this is no real file, so the values don't get written, 
# instead you simply adjust the kernel's current parameters)
#
echo "1536,2048,4096,21000,23000,25000" > /sys/module/lowmemorykiller/parameters/minfree

After this, use your phone some time, test if it makes a difference..
Play around with the last 3 numbers (see categories for details). The higher you set them, the earlier these processes will be killed.

After a restart of the phone all the settings are gone. So you are safe to experiment.

TODO: Step 4: Explain how to set this permanently by adding to a startup script.

@ androcheck

Thanks for your help, it's very much appreciated.

I executed the commands, now gonna have a play and see what happens.

Thanks again, and keep up the good work.

Ben.

Maybe worth mentioning I am running KaguDroid 1.1.3

So I will let you know my results.

It's pretty easy to make the settings permanent (by editing /system/init.d/ramzswap.sh). Here's how I did it:

adb remount
adb pull /system/init.d/ramzswap.sh .

then edit ramzswap.sh (which now should be in your current working directory) and add

echo "1536,3072,4096,21000,23000,25000" > /sys/module/lowmemorykiller/parameters/minfree

to the end of the file. Save and do

adb remount
adb push ramzswap.sh /system/init.d/

Note: This probably only works on MoDaCo

Homer,

I cant get the adb pull command to work. Says file doesn't exist.

any pointers???

I'm not sure if ramzswap.sh exists on any other rom besides MoDaco, maybe someone knows a more generic init file that exists on all systems? (I can't check right now as I'm not at home)

make the changes permanent

---

this minfree tweaking is genius!

this is what i did to make the changes permanent (on aosp-2.1-jnwhite-r4 ROM):

adb remount

adb pull adb pull /system/etc/init.d/99complete .   <-- don't forget the dot :p

added
echo "1536,2048,4096,5120,15360,23040" > /sys/module/lowmemorykiller/parameters/minfree
to the end of 99complete

adb push 99complete /system/etc/init.d/.

adb shell chmod 755 /system/etc/init.d/99complete

adb reboot

i guess you could use any of the script files in the init.d folder or even create a new one

thanks again for this tweak!!

Wow, what an improvement.

I'm running without compcash/ramzwap and tweaked de memorykiller to: 1536,2048,4096,5120,15360,23040.

Free RAM is about 70 mb all the time.

LOOKS LIKE I HAVE A PROCESSOR UPGRADE! LIGHTNING FAST!

(I have about 15 apps installed)