[Galaxy Tab 10.1 Android Development] Tubes6al4v:
build.prop is a file in /system that sets certain parameters at boot. You can change or add to this file for varying results

*Note: Root explorer does not assign permissions properly in Honeycomb. I suggest using ES File Explorer, by changing settings (enable root explorer, and mount as R/W *

Confirmed changes

Disable Boot animation for faster boot (Disables boot animation, but not sound, and results in static on the screen)

debug.sf.nobootanimation=1

Disable debug mode notification (works like a charm)

persist.adb.notify=0

Sets max number of "events" per second. Affects scrolling, touchscreen, etc.

windowsmgr.max_events_per_sec=300

Sets number of seconds between wifi scan

wifi.supplicant_scan_interval=210

Change Screen density (I don't recommend this, as the tab display is beautiful)

ro.sf.lcd_density = 240

Parameters in various ROMs

Still need confirmation that they did work

Render UI in GPU

debug.sf.hw=1

Enable hardware acceleration in video

video.accelerate.hw=1

?Increase responsiveness??

debug.performance.tuning=1

?Disable boot animation??

ro.kernel.android.bootanim=0

Unconfirmed Parameters

Force jpg quality to 100%

ro.media.enc.jpeg.quality=100

Toggle Google Location tracking

ro.com.google.locationfeatures = 1

Sets default value of brightness

settings.display.brightness=143

Force Home screen into memory

ro.HOME_APP_ADJ=1

Reduce dial-out delay

ro.telephony.call_ring.delay=0

For quick boot mode

persist.sys.shutdown.mode = hibernate

Change dalvik heap size (string already in build.prop)

dalvik.vm.heapsize=48m

Set Data buffer

net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960

Toggle Volume rocker wake

ro.config.hwfeature_wakeupkey=0

Sets preferred data connection

ro.telephony.default_network=
0 = WCDMA Preferred
1 = GSM Only
2 = WCDMA Only
3 = GSM/WCDMA (auto mode, according to PRL)
4 = CDMA / EVDO. Preferred

Set delay for loss of service report

ro.mot.eri.losalert.delay=2000

BEGIN default data roaming is on

ro.com.android.dataroaming=true

END default data roaming is on

persist.mot.a2dp.direct=0

Toggle Media Sync

persist.mot.usb.mediasync=1

To enable Stagefright..Helps stream Video/Music Faster but may not let you watch recorded videos...

media.stagefright.enable-player=false
media.stagefright.enable-meta=false
media.stagefright.enable-scan=false
media.stagefright.enable-http=false

Set SMS segment size

ro.telephony.sms_segment_size=160

Unknown Parameters

For the agps default value

ro.ril.def.agps.mode = 2

Sets default usb mode?

ro.default_usb_mode=2

pm.sleep_mode=1

ro.ril.disable.power.collapse=0

?Change Jpeg quality??

ro.media.dec.jpeg.memcap=8000000

?Change Video quality??

ro.media.enc.hprof.vid.bps=8000000

3G Signal Tweaks

ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5

ro.kernel.android.checkjni=0

ro.config.hw_menu_unlockscreen=false

persist.sys.use_dithering=0

persist.sys.purgeable_assets=1

dalvik.vm.dexopt-flags=m=y

ro.mot.eri.losalert.delay=1000

?Sets min durration between two pointer events?

ro.min_pointer_dur=10

ro.ngp_available=1

?USB modes allowed for switching??

ro.modem_available=0

ro.com.google.clientid=android

ro.cdma.home.operator.numeric=

ro.cdma.home.operator.alpha=

ro.config.vc_call_vol_steps=7

wlan interface

wifi.interface =

ro.opengles.version =

ro.setupwizard.mode=OPTIONAL

ro.telephony.call_ring.multiple=false

?Media Capture Quality Settings?

ro.media.capture.maxres=3m
ro.media.capture.fast.fps=4
ro.media.capture.slow.fps=60
ro.media.capture.flash=led
ro.media.capture.classification=classD
ro.media.capture.useDFR=1
ro.media.camera.focal=3564.0,3564.0
ro.media.camera.principal=1632.0,1224.0
ro.media.camera.skew=0.0
ro.media.camera.distortion=0.0,0.0,0.0,0.0,0.0
ro.media.camera.calresolution=3264,2448

NOTE: Some parameters were intentionally omitted as they are not applicable (i.e. proximity sensor settings, button lights, etc)

Check out Tiad8's Evo build.prop for even more edits

Sources:

http://xdaforums.com/showthread.php?t=1227269

http://xdaforums.com/showthread.php?t=991276

http://tiad8.com/general-discussion/276-know-your-build-prop.html

Is anyone else dizzy after this?