[MOD] LAG FREE g2X + dalvik fix

So far for the past two months or so we have been having the wonderful devs build some pretty awesome ICS Roms. I have been lucky enough with the rest of those on the g2x threads to benefit from Owains awesome ICS builds especially the latest linaro build. Now the one issue with ICS lately is the memory leaks and the lag that slows the phone down to a crawl. The lag on my phone especially got me looking through the internet and doing research on why it could be happening. I first found out that the implementation of Zram on ICS did not work correctly with our devices. This around the time I decided to disable the Zram on the ICS build from OWAin which at first when disabled it worked a little while but then it would start to slow down again. This is when I started messing with the build.prop and started messing around with the dalvik dexopt flags. I could probably go on and on but i will cut it short here. Now I am proud to present to you the lag free -dalvik fix. I obtained the following script with permission from batoo and his thread from the ATP forums. Link: http://xdaforums.com/showthread.php?t=1721799
. The dalvik dexopt flag change were found through research of android and the internet. Below is the procedure to get some serious butter melted from our G2x along with a smooth ride. There are two files you need: 1.modified build.prop or do manual fix 2.tune.sh script (script manager recommended)

NANDROID-BACK UP- YOU HAVE WARNED

Step 1: Download lagfree.zip below
Step 2: Extract to sdcard or internal storage
Step 3: assuming your using a rooted file browser. back up your current build.prop
Step 4: place the extracted build.prop in system folder and set permissions to RW-R-R
Step 5: reboot into reocvery and wipe dalvik cache
Step 6: reboot, dalvik cache will rebuild
Step 7: use Script manager or whatever app and run the tune.sh make sure you run with SU permissions. Reboot will disable script, run at every boot or set it with script manager
Step 6: Enjoy the buttery smooth g2x

-Manual Mode --
Open build.prop and add the following
change dalvik.vm.dexopt-flags=m=y TO
dalvik.vm.dexopt-flags=m=y,v=n,o=v,u=n
right below add
dalvik.vm.execution-mode=int:jit
then change windowsmgr.max_events_per_sec = 300
comment out with #
dalvik.vm.heapgrowthlimit
then save
then goto step 5 above.

Please provide feedback nd enjoy....

now im off to get drunk...


Sent from my Transformer Prime TF201 using xda premium

da-pharoah said:

Anyone that's going to do this on HFS needs to do it manually or you will miss out on the other build prop mods... thanks again flac0! Helps out a lot!!

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Same on domination how ever it will be included in the next release

Thanks flac0

Sent from my HTC One X using xda premium

da-pharoah said:

Sweet... hey let me ask you, where did you host that image? im not familiar with the google user content url... is that g+ or something?

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picasa, its the embed image option when you choose how to link a photo.

Flashable zip ready for automatic installation:

pastime1971 said:

tony and i have worked out a flashable zip of init.d script + build.prop mod
there are two types of installations. choose one you like.

* system installation *
buttery-system.zip : edits /system/build.prop & installs /system/etc/init.d/99tune
to revert it, simply re-flash ROM.
you have to flash this every time you flash a ROM.

* user installation *
buttery-local.zip : edits /data/local.prop & installs /data/local/userinit.d/99tune
buttery-local-remove.zip : reverts /data/local.prop & removes /data/local/userinit.d/99tune
this changes /data/ and therefore, the effect is permanent unless you change it manually, which is the reason for buttery-local-remove.zip

# do a nandroid backup always.
# it probes if ROM is GB or ICS and apply mod accordingly. (only tested on ICS. please test it and feedback on GB.)
# to check if it is working, do the following in terminal

Code:

getprop | grep dalvik
getprop cm.buttery.active
cat /proc/sys/vm/*

!!! this script is based on vork kernel installer. the credit goes to vork team (benee and kiljacken)

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Please give pastime1971 a "Thanks" at the following post: original post by pastime1971

c1c2doc said:

Will this work on the rooted v21y stock rom?

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Should work for any Rom it does not change anything in-depth