DUNIA ANDROID

ok guys, time for tweaking the mem thing again. may be u have wondered about why there is no FIMC0/FIMC1/FIMC2 etc in the default config for 2.3.3 (me at least)... so, as usual, i started to take a look at this

for those who have no idea where to change the reserved memory settings, take a look at arch/arm/mach-s5pv210/mach-aries.c and you will be delighted to get them back, plus some interesting things

the default settings for movies play back for general I9000 is:
S5PV210_VIDEO_SAMSUNG_MEMSIZE_MFC0 (35840 * SZ_1K)
S5PV210_VIDEO_SAMSUNG_MEMSIZE_MFC1 (35840 * SZ_1K)

while, for NTT, the settings for "1080p support" is:
S5PV210_VIDEO_SAMSUNG_MEMSIZE_MFC0 (36864 * SZ_1K)
S5PV210_VIDEO_SAMSUNG_MEMSIZE_MFC1 (36864 * SZ_1K)

u'll find also what we used to tune in froyo like:
VIDEO_SAMSUNG_MEMSIZE_FIMC0
VIDEO_SAMSUNG_MEMSIZE_FIMC1
VIDEO_SAMSUNG_MEMSIZE_FIMC2
VIDEO_SAMSUNG_MEMSIZE_JPEG
VIDEO_SAMSUNG_MEMSIZE_PMEM
VIDEO_SAMSUNG_MEMSIZE_GPU1
VIDEO_SAMSUNG_MEMSIZE_ADSP


i've conducted a few tests with the min values for 1080p support but up to now, i do have the answer yet, nor the max available mem in Gingerbread this time. however, i can show you some of the rough values required for 1080p playback:


NOTE THAT THESE VALUES ARE NOT YET OPTIMIZED

MFC0: 36864
MFC1: 36864
FIMC0: 12288
FIMC1: 9900
FIMC2: 12288

just performed some tests with different reserved mem sizes (stock kernel ZSJP8) for your ref

default settings:
CONFIG_ANDROID_PMEM_MEMSIZE_PMEM=16384
CONFIG_ANDROID_PMEM_MEMSIZE_PMEM_GPU1=10240
CONFIG_ANDROID_PMEM_MEMSIZE_PMEM_ADSP=1500
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC0=14336
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC1=1024
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC2=12288
CONFIG_VIDEO_SAMSUNG_MEMSIZE_MFC0=36864
CONFIG_VIDEO_SAMSUNG_MEMSIZE_MFC1=36864
CONFIG_VIDEO_SAMSUNG_MEMSIZE_JPEG=5012
CONFIG_VIDEO_SAMSUNG_MEMSIZE_TEXSTREAM=10240



1/. minimum (almost) reserved mem with movie playback possible (no lag in youtube), 356mb memory, no special lags observed, opened 4 tabs in browser with lots of imgs and swfs



CONFIG_ANDROID_PMEM_MEMSIZE_PMEM=8192
CONFIG_ANDROID_PMEM_MEMSIZE_PMEM_GPU1=4096
CONFIG_ANDROID_PMEM_MEMSIZE_PMEM_ADSP=1024
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC0=6144
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC1=1024
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC2=6144
CONFIG_VIDEO_SAMSUNG_MEMSIZE_MFC0=29696**##
CONFIG_VIDEO_SAMSUNG_MEMSIZE_MFC1=29696**##
CONFIG_VIDEO_SAMSUNG_MEMSIZE_JPEG=3072
CONFIG_VIDEO_SAMSUNG_MEMSIZE_TEXSTREAM=2048

** min value in order to play movies = 29mb, 28mb wont play
## can be set to a lower value without movie playback, setting these with too low values caused problems, below 20mb should be ok


2/. nearly double all default values, 219mb available, didnt feel faster




as to min mem usage, u'll need to (in brief):
1/. remove unneccessary apps
2/. remove startup/network chg broadcast listeners from the app - a lot of apps/services are launched at startup up or network state chg, remove them so they wont start automatically, eg gtalk, sync/feed, vold service, installd, etc
3/. kill unneccessary services & processes - i didnt use any killer since i rooted my phone, i use script to kill them since killers consume more mem
4/. i have read the source and found that only -Xmx (max mem) is included but no -Xms (initial mem), perhaps we can do something here (not done yet)


test2: available memory - 257.68mb




reference for 2.1
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC0=10240
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC1=1024
CONFIG_VIDEO_SAMSUNG_MEMSIZE_FIMC2=10240
CONFIG_VIDEO_SAMSUNG_MEMSIZE_MFC0=24576
CONFIG_VIDEO_SAMSUNG_MEMSIZE_MFC1=24576
CONFIG_VIDEO_SAMSUNG_MEMSIZE_TEXSTREAM=8192


more info