[TWEAK PACKAGE][MTD-Roms]|6/16/2012|Dalvik Optimizer (Formerly Odexer)

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DON'T FLASH ON CM9 YET, OP WILL BE UPDATED WHEN YOU CAN

Dalvik Optimizer Beta 0.1
Note: This WILL work with Team Win Recovery Project 2.x(TWRP Touch Recovery) and ClockWorkMod (CWM)


Disclaimer

This is for the Galaxy S 4G, or SGH-T959V, if you don't own this phone, don't use this.I am not responsible if you hard or soft brick (damage/make unusable) your phone in any way. I suggest that you know how to flash recovery zips like roms and such, and have a way to recover like a backup or have the original rom in case something doesn't work or interrupts your flash. I also am not responsible but I'll feel bad for you if you get a heart attack, seizure, or any medical illness because of this flash. e.g, If the phone is too fast for you. I don't care if you go crazy and spend all your time on this phone causing you to break up with your wife, husband, children, family, girlfriend, boyfriend, or fiance. I will laugh at you if you start to make out with your phone though .

What is this?

This is an optimizer that improves the performance of an MTD roms like CyanogenMod 7, or moKeeOS, or DianXinOS, or Shendu OS, or JoyOS, or MIUI, or any other Team Acid, Team Kick Ass or Team NoOb.LuLz MTD rom that may release in the future.

What does this do?

1. This Re-Odexes your system.
-An Odex file is basically a dalvik executable that the phone reads upon boot. Stock roms like those released from Google, or Samsung are Odexed (as far as I know). Custom roms are often De-odexed in order to make their roms customizeable from the developer's point of view. Note: This will not effect Theme-Chooser or any other built in theming app
2. It changes the Dalvik VM heap size to 128m.
-This is the maximum allowable memory for each Dalvik Virtual Machine heap. Basically, increasing the size prevents your phone from having to clear it so often which runs your battery(the default size is 42m I believe).
3. I don't know yet, this is just the beta, this may be the final release, but I'll probably add more.

Advantages
1. Boot time is decreased
2. Scrolling is faster, less lag
3. Better battery life
4. Faster phone(quadrant scores may actually be lower)
5. More /data space because dalvik doesn't have to use /data to copy the classes.dex files over for itself.

Disadvantages
1. If you were to dump your system partition and edit apk files, you'd have to reodex them for certain modifications. This is a lengthy and tedious process usually, unless you use a program, which still takes >25 minutes unless you have a computer with a boat load of ram. (Those are usually pretty expensive)

Credits
1. zman0900 from the epic4g forum- I ported his odexer
2. Team Acid - CM7
3. Team Kick Ass - Motivation for the whole community
4. Google - Android
5. Samsung - This phone
6. My dad - Buying me this phone.

does this fix the camera?

Originally Posted by sklassy

does this fix the camera?

No.

Sent from my SGH-T959V using XDA

Airfluip can you please explain the benefits of odexing?

I have never understood it even after reading about it online.

Sent from my SGH-T959V using xda premium

Did you create this tool? If not you should put this in the general forum instead.

EDIT

For those of you who don't know about dex files
http://www.talkandroid.com/guides/mi...e-explanation/

Yeah, but I based it of other scripts I had seen.

Sent from my SGH-T959V using xda premium

The main benefit in ODEXing for our phone, which has very limited /data partition, is that all system apps and the framework itself are already precompiled and ODEX files are left in /system. They don't take space in Dalvik cache in /data. In the end you can leave more of your apps in /data and not move them to SD so they load faster.

Also faster boot time,

Battery and speed is better too.

My findings are, dalvik doesn't have to crack open every app, also dex is dalvik executable. Odex is optimized hence the "o"

Sent from my SGH-T959V using xda premium

I have learned a lot of practical things, thank you!

Worked for me. Boot-up is noticeably faster. Thank you.