In computing, just-in-time compilation (JIT), also known as dynamic translation, is a method to improve the runtime performance of computer programs. Traditionally, computer programs had two modes of runtime operation, either interpreted or static (ahead-of-time) compilation.[citation needed] Interpreted code is translated from a high-level language to a machine code continuously during every execution, whereas statically compiled code is translated into machine code before execution, and only requires this translation once. for a deep info refer here
Why JIT?
XPERIA is so slow... that why we should do the tweak... hehe...
Requirement before doing Jit:
1. a rooted xperia with the latest busybox
2. xrecovery installed
3. all the necessary file.
this jit compiler version only work with xperia x10.
Download: JIT_Enabler_v2-zdz.zip
the main tread at xda-developers
HOW-TO-INSTALL
Download JIT Enabler v2 to your PC. Do NOT unzip the file
Transfer the file to your Xperia X10 SDcard. Put it on the root and give a easy name to look for.
Re-boot into xRecovery.
From the xRecovery, go to menu select ‘Advanced Options’ and then select ‘Wipe Dalvik Cache’. It will ask you whether you are sure, select ‘Yes – Wipe Dalvik Cache’. this will not reset your phone. dont worry. you can google for the definition if you want to know Dalvik mean.
in xRecovery menu, select ‘Install custom zip’. Select ‘Choose custom zip from sdcard’ to browse where the zip file is located on your memory card and install the file.
after that just go back to the main menu and reboot the phone. after a few boot the the speed of the phone would increase significantly.
my score with Quadrant Standard with overclock Widget boost. before Jit installed.
after Jit installed.
thanks to the Dev at XDA-Developers for this powerfull tweak. all credits goes to them.
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