[Galaxy Tab 7.7 Android Development] UpInTheAir:
v4.1.0 update

>> v4.1.0 UPDATE <<

NOT PESONALLY TESTED

CHANGES

ON P6800 PARTITION !!

** FOR P6800 partitioned device running JB 4.1.2 DXMD3 ROM !! **

1. Read warnings in Post #3 before flashing. I am not responsible, you are

2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data

3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)

4. Recommend 200-1400 -or- 200-1600 MHz

5. Recommended governors etc = Read Post #3

** REMOVE

ALL

PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **

CHANGE-LOG v4.0.0 -> v4.1.0

** Source changes as per gitHub

* fix for the CPU scaling above max set frequency (thanks Yank555.lu)

* 18-step CPU : add 1700 & 1800 MHz CPU OC options (for battery & stability, not recommended above 1600 MHz)

* zRAM (still off by default)

use two CPU's (zram0 & zram1)

zRAM tweak
​

* decrease IO latency

* mount partitions NOATIME and NODIRATIME by default

* add sysfs interface to enable / disable thermal throttle (default on) – be careful here, do you want to melt your CPU?

* tweak default xz compression ratio for slightly faster boot speed

* +25mV for all CPU freq 100-1400 MHz - stock levels now (you can UV yourself)

* disable gentle fair sleepers - improve UI responsiveness

* disable linux printk & add sysfs interface to enable / disable

* enable Westwood+ TCP algorithm (default still cubic) – some testing by other users show an increase a network throughput – test for yourself and share results!

** initramfs changes

* Virtual memory & kernel tweak values from V6SuperCharger - zeppelinrox@XDA

vm.oom_kill_allocating_task=0

vm.panic_on_oom=0

vm.vfs_cache_pressure=10

vm.overcommit_memory=1

kernel.panic_on_oops=0

kernel.panic=0​

* RAM Management values from V6SuperCharger - zeppelinrox@XDA

tweak LMK OOM adj & minfree values (512HP Super UL)

much reduced lag as current apps aren't starved of memory when android LMK kills off background apps

slightly less mutli-tasking​

SkyhIgh default :

adj = 0,3,6,10,12,15

minfree = 2048,3584,19200,23040,24320,32000 (8-14-75-90-95-125 MB)​

* init.d support moved to end of script

* fstrim lagfix - fixed having to reboot twice after enable ".lagfix_on". Just create the file in internal sdcard & reboot ONCE

* auto set init.d scripts to 777 – no need to manually set script permissions, just drop in & reboot

INSTALLATION

** REMOVE

ALL

PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **

1. NANDROID (just in case)

2. Flash SkyHigh P6810 JB 4.1.2 ROM or bodivas P6810 JB 4.1.2 ROM

3. Remove any previous CPU control settings from starting at boot

4. Flash in :

a) CWM.zip in custom recovery (CWM or TWRP)

-or-

b) ODIN.tar in Odin [PDA] / Mobile Odin
​

4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)

SUGGESTED CPU CONTROL APP : Trickster Mod app

Don't forget to use only one Control app at a time. They will conflict !

CURRENT BUGS :

* Random screen tint (Read Post #3)

ISSUES?

* READ POST #1, #2 & #3 FIRST

CHEERS :D

UITA

.