Yes, this thread used to be on just battery life, that was when there was almost no development for the Razr on ICS. Now we have plenty of ROMs, Mods, and How-Tos'. Sorry to all of the GSM users, but since I own a CDMA Razr some things in this guide might only be for CDMA Razr's. If any of you feel up to it, PM me an equivalent Mod or ROM and I'll include it.
NOTE: Most of these tips assume you have root access and a custom recovery!
(Huge Savings!)
Tip 1. Black Themes
It's proven that black themes use less battery. It takes 0 battery to display a black pixel. So make sure your theme is dark. A good ROM for a black theme is Black Widow by andlaw.
(HUGE SAVINGS)
Tip 2. Brightness
Use automatic brightness! If you're using an AOKP/CM9 based ROM, don't be shy to play around with the Automatic backlight settings under Display. To minimize battery drain, it's good to minimize sampling rates and lower brightness.
OR for even bigger battery savings, use Widgetsoid or Tasker to make a Homescreen, battery friendly as there is no syncing, widget to change your brightness when needed.
You can also use Widgetsoid to add customized pull down toggles to any ROM, which is great!
Idea from HSD-Pilot
(HUGE SAVINGS)
Tip 3.The CPU and I/O
The CPU takes up A LOT of battery, to minimize the battery drain, it's good to under clock/under volt(UV when we get Custom Kernels/Mods)
Tips for Under clocking: The lowest the CPU can go and still be able to manage most or all load you put on it is 800Mhz, so keep it there, and if you play a lot of games, you might increase it to 1Ghz.
Use the "hotplug" CPU Governor: "hotplug" as you will see it called is unique in our phone in the aspect that when CPU load is low enough, it tuns off the second core, saving battery. What is also great about this governor is that it's smart enough that when CPU load is high, it turns the second core on quickly. The frequency stepping values on this governor are superb, you'll get the best performance and battery life.
Tips for Screen Off: If you make profiles for screen off DON'T set it 300Mhz minimum and maximum, that uses MORE BATTERY!
Explanation: When you turn the screen off, the CPU probably still has some tasks it still needs to do and when it's at 300Mhz, it can't do those tasks quickly, this keeps the phone out of deep idle. When the phone is at 600Mhz it can do tasks faster and more efficiently therefore the phone hits deep idle faster, saving more battery.
I guess sometimes when you have your min and max frequency as 300 when screen off and you let the screen time out while a program is running your Razr can crash, just another reason to put it on 600.
CPU Sleeper is a great app that turns off the second core of the CPU when the screen is off, saving a lot of battery life.
Instructions for use:
1. Download and install the apk on your phone.
2. Open your app drawer and locate and select CPU Sleeper.
3. Enable auto-start on reboot and click on "Start service" 2x to activate.
(This shuts off 1 core while the phone's screen is off! Both cores resume when the screen is turned back on.)
4. Enjoy!
If you can, install the Kernel Modules by whirleyes found here. I can personally recommend the hotplugx CPU governor and the SIO I/O Scheduler.
Hotplugx is just an enhanced version of hotplug, as I understand it the second core (CPU 1) is turned off and on faster, resulting in a smoother experience. For clarification, when there is less CPU load, instead it taking 1 second to turn off CPU 1 it takes .5 seconds. When CPU 1 is needed it is turned on faster. Hotplugx does not just have different values of up threshold and down threshold, it actually has optimized code to turn the cores off and on faster. Those values are hypothetical, but you get the point.
SIO is an I/O Scheduler based on Deadline, and Noop. The advantages of it are:
It's very simple, which means better battery life and performance.
Minimized starvation of requests(everybody gets their turn).
For more information on CPU Governors and I/O Schedulers go here.
(Medium to High Savings)
Tip 4. Data+Wifi
Undoubtedly, one of the biggest battery suckers is Mobile Data and Wifi, specifically 4G. So what we can do is download the Phone Info app, Located Here to change the LTE/CDMA connection type to CDMA only. This saves battery by looking for less bands to connect to and by not connecting to battery consuming 4G.
Do this by going under the section "Phone Info" and scrolling down to the bottom and where it says "Set preferred network type" select "CDMA Auto(PLR)".
Wifi: It's proven that having the "Wifi on while sleep" setting on improves battery life.
Do this by going into settings and under "Wifi" hit the menu button and go to "Advanced" and make sure "Keep Wifi on during sleep" says "Always".
(Low to High Savings-Depends on use)
Tip 5. build.prop tweaks
To increase battery life efficiency while in deep sleep and while looking for connections, add or change these lines to the bottom of the build.prop using Root File Managers such as Root Explorer or Root Browser.
REALLY IMPORTANT: MAKE A NANDROID BACKUP BEFORE MESSING WITH THIS!
NOTE: The build.prop is located in /system/build.prop
NOTE 2: Don't open the build.prop in a windows based text editor, it messes up the formatting and you will brick. Use Notepad++ It's better this.
A "#" means it's commented and the compiler/system does not read it.
Code:
#Keep at 1 or 0.
ro.ril.disable.power.collapse=0
#Keep at 1
pm.sleep_mode=1
#Could break tethering
ro.mot.eri.losalert.delay=1000
ro.kernel.android.checkjni=0
EDIT EXISTING LINE!
Code:
#Keep value high to minimize battery drain.
wifi.supplicant_scan_interval=120
(Low to High-depends)
Tip 6. Apps,Services,etc.
Sometimes you get an app or service that uses an immense amount of battery, a lot of these apps are built on, which is called bloatware. We are able to "Freeze" apps like this via the App Manager in ICS or via Titanium Backup. Once you freeze an app, be vigilant about Force closes, random reboots, freezes, etc. Don't freeze anything that you know would be system vital, such as "SIM Toolkit or "System UI". Basically, be smart about it.
Bad Apps: Sometimes you download apps from the market that use an immense amount of battery, you'll know when you just downloaded an app and battery life got really bad. In the situation you know what app it is, uninstall it. In the situation that you don't, use an app like Watchdog Task Manager Lite to monitor the apps using memory and CPU.
What I have frozen:
Amazon Kindle 3.6.0.8.7
Apps 3.06.86
Backup Assistant Plus 1.0
Backup Assistant Plus 4.0.4-47
Backup Assistant+ 4.0.4-47
Backup Assistant+ Contacts Client 1.0
Backup Assistant+ Media 1.0
Calendar 4.0.4-47
[Calendar] Calendar Storage 4.0.4-47
com.motorola.huxvmm.setting 4.0.4-47
Device Setup 1.0
Emergency Alerts 4.0.4-47
Facebook 1.9.6
Flash Removal 4.0.4-47
Google Calendar Sync 4.0.4-338691
Google+ 3.0.1.32017166
Guided Tours 1.0
Help Center 1.0
Home screen tips 1.0
Homescreen 7.7.0Q-129 11
Homescreen VZW Config
Magic Smoke Wallpapers 4.0.4-47
ModemStatsService 1.0
MOG Music 1.01
MOTOACTV 1.0.265G
MotoPrint 5.0.0.26
Music Store 1.1.112
Music Visualization Wallpapers 4.0.4-47
MusicFX 1.4
My Gallery 1.1.112
My Music 1.1.112
My Verizon Mobile 10.0.332
net.juniper.junos.pulse.placeholder 1.0
Netflix 1.0.0 build 1161240-trunk
NFL Mobile 5.7
Quickoffice 5.0.109
Rescue Security 7.0.442
Slacker Radio 3.2.2047
Slingbox 1.0
Smart Actions 3.1.5.2.0
Smart Actions FW 1.0.13
Social Location 7.0.28
Social Sharing 4.0.4-47
Sync Service 2.5.1.4.9
Talk 4.0.4-338691
TalkBack 3.0.2
Tasks 3.0
V CAST Tones 4.5.13
Verizon Remote Diagnostics 2.42.166
Verizon Video 6.2.51
Video Calling 1.0
Video Editor Lite 3.2.1.18
VideoSurf 2.3.0
Voicemail 1.1
VZ Navigator 7.5.1.94
Weather 4.0.4-47
World Clock 1.0
If you have any problems, I'll take it off the list.
Known battery media apps:
Facebook
Twitter
Google+
Solution- Try to find an all in one client,like HootSuite or Tweetdeck it will sync less and will take up less RAM and CPU cycles.
Amazon Appstore
Solution- Uninstall it or make sure you kill every time you use it.
Skype
Steam
Solution- Only run Steam and Skype when you need to, I don't know of any all in one for that combination.
Google Drive
Dropbox
Box
Solution- Try to limit your syncing, turn off instant upload.
Flashlight apps:
Brightest Flashlight Free
Flashlight
All benchmark apps if used too much:
Quadrant Standard
Antutu Benchamrk
Smartbench
The solution - It's okay to bench your phone a lot, just limit it if you need your phone to last that day.
Battery sucking games(all of them, even if they're not on this list):
Cut the Rope
Emulators
All of the Angry Birds
Temple Run
GTA III
Amazing Alex
The solution- Play less graphically intensive games, graphically intensive games work the CPU/ GPU really hard.
Music Streaming Apps:
Google Play Music
Pandora
Winamp
Motocast
iHeartRadio
Slacker Radio
TuneIn Radio
Some tips on limiting battery drain while listening to music: Avoid streaming services like Winamp,Motocast , Slacker Radio and TuneIn Radio.
Google Play Music and Pandora are slightly better.
Why Google Play Music is better in terms of battery life
Although Google Music is still capable of streaming music you've stored on Google's cloud,(sucks battery) when you listen to a song the app caches the song temporarily, so if you were addicted to the new song you got and listened to it 2 times in a row, the app wouldn't have to stream the song again. It's the same thing if you were to go back and listen to the same song 2 or 3 songs later, you wouldn't have to stream it again. Another advantage of Google Music is that you can play music from your sdcard as well as songs from your Google Play Library. No streaming, just reading from the sdcard.
Why is better Pandora better?
Yes, it streams music just like all the other ones I told you not to use, but there is one thing that is unique about Pandora, it doesn't stream music exactly, it packs the song into the cache as fast as possible, it's not constantly using your data connection.
So use Google Play Music or Pandora, preferably Google Play Music.
It can go on and on and it will.
(Medium to High Savings)
Tip 7. Custom ROMs
A custom ROM(Read Only Memory) is a custom version of Android, usually with bloatware and manufacturer skin removed, performance enhancements, and a custom theme. I can personally recommend Eclipse for ICS, Artic for ICS and my personal favorite Liquid Smooth for ICS. They are all GREAT ROMs.
(Low to Medium)
Tip 8. Scripts
A script is a series of instructions carried out by a program to do an action. The ones we're interested in are ones that we can set at boot to apply values. Here is a script you can use to improve battery life. If you make any scripts I'll include them here.
Code:
echo "2400" > /proc/sys/vm/dirty_writeback_centisecs
echo "2000" > /proc/sys/vm/dirty_expire_centisecs
echo "256" > /proc/sys/kernel/random/write_wakeup_threshold
echo "256" > /proc/sys/kernel/random/read_wakeup_threshold
rm /dev/log/main
(Low)
Tip 9. Location Services
Location Services are great, so are Google account backups, they improve search results, help in navigation, back up settings, all sorts of things. Unfortunately, they suck up Battery, so lets disable them.
In settings, under "Location Services" make sure everything is unchecked. Under "Backup & reset" make sure "Backup my data" is unchecked.
(Medium to HUGE)
Tip 10. Battery Savers
Yes, Battery Savers, like JuiceDefender, which is the one we're going to talk about. JuiceDefender in the free version, optimizes your battery by controlling when your phone connects to Mobile Data, very simple. There WILL be at least some improvement with JuiceDefender managing your connections. If you're constantly fighting with it, read some of the manuals and make sure you haven't set any settings you didn't mean to.
Remember, if you liked JuiceDefender, consider buying the Plus or Ultimate versions.
(Medium to High)
Tip 11. Launchers
Live Wallpapers are cool and all, but they drain battery. So swap it for something static and preferably black.
Widgets are great too, they display dynamic information in an easy to look at way. Too bad they suck battery by forcing a refresh every time you turn the screen on. So try to minimize how many you use.
(Low)
Tip 12. Haptic Feedback
Haptic feedback is when you press a button, soft key or key on the keyboard, and the phone vibrates. This takes up valuable resources best used else where. To turn this off go under "Sound" in settings and make sure everything from "Dial pad touch tones" to "Vibrate on touch is unchecked.
(Low to Medium)
Tip 13. Sync
An example of sync is when you open the Facebook application and all the latest new is synced. Except the Sync were talking about is done automatically at specified intervals. Taking up valuable juice, so lets disable it!
To do this go into settings and under "Accounts & sync" if it's on in the top right it will be green, if it's off it will be grey. Make sure it's off.
(Low to Medium)
Tip 14. Animations
Animations happen when you transition in homescreens, open an app, etc. This sucks battery life because it causes the CPU/GPU to work harder to do a simple task like opening an app.
To turn this off go under "Developer options" in settings and at the bottom of "User Interface" section make sure that "Window animation scale" and "Transition animation scale" are set to off.
(HUGE SAVINGS)
Tip 15.Disable things when not in use
This is one of the most important rules for great battery life EVER, you can't expect to get great battery life when you constantly have Bluetooth, Wifi and Mobile Data on. So turn things off if you're not using it!!!!!!!!!!!!
If you have any ideas, post them!
Performance
This section is for people who want to increase their performance but don't want to compromise on battery life.
Tip 1. ROMs
Pretty much any ROM and once again:
Eclipse for ICS
Artic for ICS
Liquid Smooth for ICS
Tip 2. Kernel Modules by whirleyes
Again, I can recommend hotplugx and SIO, they're the best that I have tested together.
Whirleyes has made an experimental overclock module to set the max frequency for 1350Mhz, but beware some people have reported random reboots and freezes.
Download link: Overclock Module
For more information on CPU and I/O Schedulers go here.
Tip 3. Scripts/Mods
Most of us know about zeppelinrox's Superchager v6 and there are many other memorable ones.
Like my Speed it UP script.
Like The Universal Adrenaline Shot
Two scripts that improve RAM management,kernel performance, VM tweaks, dirty tweaks, improves sdcard read speed, file system speedups, sets I/O scheduler to noop or SIO and the CPU Governor to hotplug or hotplugx, changes kernel memory swappiness, and tweaks to the hotplug/hotplugx CPU Governor.
Code:
echo "700000" > /proc/sys/kernel/sched_latency_ns
echo "300000" > /proc/sys/kernel/sched_min_granularity_ns
echo "26188" > /proc/sys/kernel/sched_features
#writes more pages to disc, when given oppurtunity
echo "8" > /proc/sys/vm/page-cluster
#drop all cahces when given oppurtunity
echo "3" > /proc/sys/vm/drop_caches
#Keep 4MB in memory
echo "4096" > /proc/sys/vm/min_free_kbytes
#Dump Vfs cache less
echo "20" > /proc/sys/vm/vfs_cache_pressure
echo "80" > /proc/sys/vm/dirty_background_ratio
#How much dirty data there must be to write to disc
echo "90" > /proc/sys/vm/dirty_ratio
#How often writeback daemons wakeup to write data to disc.
echo "1200" > /proc/sys/vm/dirty_writeback_centisecs
#How old 'dirty" data has to be to be written to disc
echo "900" > /proc/sys/vm/dirty_expire_centisecs
#^^^^^^Both expressed in 100th of second^^^^^^
echo "20" > /proc/sys/vm/swappiness
#faster sdcard read speed
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb
# file system speedups
mount -o remount,noauto_da_alloc /system /system
mount -o remount,noauto_da_alloc /data /data
mount -o remount,noauto_da_alloc /cache /cache
# disable logcat - performance boost & save memory,comment, reboot for logcat.
rm /dev/log/main
#sets I/O scheduler to SIO, considered best.
echo "noop" > /sys/block/mmcblk0/queue/scheduler
#sets cpu governor to hotplug, is most intelligent
echo "hotplug" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo "950" > /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency
#decreases sampling rate, stops lag and saves battery
echo "450000" > /sys/devices/system/cpu/cpufreq/hotplug/sampling_rate
echo "75" > /sys/devices/system/cpu/cpufreq/hotplug/up_threshold
echo "45" > /sys/devices/system/cpu/cpufreq/hotplug/down_threshold
echo "15" > /sys/devices/system/cpu/cpufreq/hotplug/hotplug_out_sampling_periods
echo "5" > /sys/devices/system/cpu/cpufreq/hotplug/hotplug_in_sampling_periods
#better memory mangement
echo "2048,4096,43008,47104,51456,55808" > /sys/module/lowmemorykiller/parameters/minfree
#ADJ fixes , shoould see awesome increase in multitasking
echo "0,3,6,10,12,15" > /sys/module/lowmemorykiller/parameters/adj
Use this script if you have the hotplugx CPU Governor and the SIO I/O scheduler:
Code:
echo "700000" > /proc/sys/kernel/sched_latency_ns
echo "300000" > /proc/sys/kernel/sched_min_granularity_ns
echo "26188" > /proc/sys/kernel/sched_features
#writes more pages to disc, when given oppurtunity
echo "8" > /proc/sys/vm/page-cluster
#drop all cahces when given oppurtunity
echo "3" > /proc/sys/vm/drop_caches
#Keep 4MB in memory
echo "4096" > /proc/sys/vm/min_free_kbytes
#Dump Vfs cache less
echo "20" > /proc/sys/vm/vfs_cache_pressure
echo "80" > /proc/sys/vm/dirty_background_ratio
#How much dirty data there must be to write to disc
echo "90" > /proc/sys/vm/dirty_ratio
#How often writeback daemons wakeup to write data to disc.
echo "900" > /proc/sys/vm/dirty_writeback_centisecs
#How old 'dirty" data has to be to be written to disc
echo "800" > /proc/sys/vm/dirty_expire_centisecs
#^^^^^^Both expressed in 100th of second^^^^^^
echo "20" > /proc/sys/vm/swappiness
#faster sdcard read speed
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb
# file system speedups
mount -o remount,noauto_da_alloc /system /system
mount -o remount,noauto_da_alloc /data /data
mount -o remount,noauto_da_alloc /cache /cache
# disable logcat - performance boost & save memory,comment, reboot for logcat.
rm /dev/log/main
#sets I/O scheduler to SIO, considered best.
echo "sio" > /sys/block/mmcblk0/queue/scheduler
#sets cpu governor to hotplug, is most intelligent
echo "hotplugx" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo "950" > /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency
#decreases sampling rate, stops lag and saves battery
echo "450000" > /sys/devices/system/cpu/cpufreq/hotplug/sampling_rate
echo "75" > /sys/devices/system/cpu/cpufreq/hotplug/up_threshold
echo "45" > /sys/devices/system/cpu/cpufreq/hotplug/down_threshold
echo "15" > /sys/devices/system/cpu/cpufreq/hotplug/hotplug_out_sampling_periods
echo "5" > /sys/devices/system/cpu/cpufreq/hotplug/hotplug_in_sampling_periods
#better memory mangement
echo "2048,4096,43008,47104,51456,55808" > /sys/module/lowmemorykiller/parameters/minfree
#ADJ fixes , shoould see awesome increase in multitasking
echo "0,3,6,10,12,15" > /sys/module/lowmemorykiller/parameters/adj
Tip 4. Build.prop tweaks
I would say that theses help the most, they can raise a ROMs performance 400 points alone in a benchmark.
Here they are:
Code:
#allows for sound during boot
ro.config.play.bootsound=1
persist.cust.tell.eons=1
#Locks home app in memory.
ro.HOME_APP_ADJ=1
pm.sleep_mode=1
persist.service.swiqi.enable=1
persist.sys.ui.hw=1
#renders UI with GPU
debug.sf.hw=1
debug.performance.tuning=1
#forces hardware acceleration
video.accelerate.hw=1
debug.egl.profiler=1
debug.egl.hw=1
#renders graphics with GPU + CPU
debug.composition.type=gpu
debug.composition.type=cpu
#raises JPEG quality
ro.media.enc.jpeg.quality=100
#raises how much memory can be spent on rendering JPEGs.
ro.media.dec.jpeg.memcap=8000000
ro.media.enc.hprof.vid.bps=8000000
#3g speed tweaks
ro.ril.enable.a52=0
ro.ril.enable.a53=1
ro.ril.enable.sdr=1
ro.ril.enable.dtm=1
ro.ril.enable.gea3=1
ro.ril.disable.fd.plmn.prefix=23402,23410,23411
ro.ril.disable.mcc.filter=1
ro.ril.disable.power.collapse=0
ro.ril.hsdpa.category=14
ro.ril.gprsclass=12
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=268449905
ro.ril.fast.dormancy.rule=0
ro.ril.emc.mode=1
ro.ril.hep=0
ro.ril.hsxpa=2
ro.ril.gprsclass=12
ro.ril.enable.dtm=1
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
#scrolling tweaks
ro.min_pointer_dur=5
ro.max.fling_velocity=12000
ro.min.fling_velocity=8000
#better voice quality in calls
ro.ril.enable.amr.wideband=1
#stops kernel error checking, will speed things up and will fix some application issues.
ro.kernel.android.checkjni=0
ro.kernel.checkjni=0
dalvik.vm.checkjni=false
#uses less RAM but worse performance
dalvik.vm.verify-bytecode=false
#use Dalvik Just In Time Compiler, much faster.
dalvik.vm.execution-mode=int:jit
#dalvik optimizes all classes
dalvik.vm.dexopt-flags=m=v,o=a
dalvik.vm.jmiopts=forcecopy
#increases media performance a lot.
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
media.stagefright.enable-record=false
#higher overall net speeds
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
#ipv4 net tweaks
net.ipv4.tcp_ecn=0
net.ipv4.route.flush=1
net.ipv4.tcp_rfc1337=1
net.ipv4.ip_no_pmtu_disc=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_timestamps=1
net.ipv4.tcp_rmem=4096 39000 187000
net.ipv4.tcp_wmem=4096 39000 187000
net.ipv4.tcp_mem=187000 187000 187000
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_moderate_rcvbuf=1
Edit existing lines!
Code:
#instant ring when called
ro.telephony.call_ring.delay=0
#increases FPS to beyond what screen can render, really smooth.
windowsmgr.max_events_per_sec=240
#fixes black screen after call end
mot.proximity.delay=0
Tip 5. Mod your services.jar
The services.jar is where Out Of Memory(OOM) priorities are read. Modding your services.jar is a mandatory part of being fully "Supercharged" in zeppelinrox's Superchager v6 script. Getting the modded services.jar that I will provide gives you the OOM fixes from the script. I recommend that you use the services.jar that I provide, but if you feel like getting your own. Go here if you want to mod your own.
Get the services.jar here.
Note: The services.jar is located in /system/framework
Instructions for replacing your services.jar:
1. Download or get your own services.jar.
2. Navigate to /system/framework using a root file browser.
3. Copy the services.jar into /system/framework.
4. Make sure the permissions are 0644 or rw-r--r--.
5. Reboot and enjoy
And more to come!
If you liked my guide enough, Donate!
Or at least leave me a "Thanks".
<<<<<<<<<<<<<<<<<<<<<<<<
Credit: http://forum.xda-developers.com/showthread.php?t=1599025&highlight=battery+saving+guide
Added Launchers Haptic feedback and Sync.
Sent from my XT912
Instead of Autobrightness I've an toggle from Widgetsoid on my Home Screen. 3 Settings (18 / 25 / 35)
So when I need it, I set in higher but usual I use the 18 %
Isn't that better for battery drain?
Sent from my XT910 using Tapatalk 2
HSD-Pilot said:
Instead of Autobrightness I've an toggle from Widgetsoid on my Home Screen. 3 Settings (18 / 25 / 35)
So when I need it, I set in higher but usual I use the 18 %
Isn't that better for battery drain?
Sent from my XT910 using Tapatalk 2
Click to expand...
Click to collapse
Yes, it would be, no sampling the light every couple of seconds.
Thanks! I'll add this idea to the OP.
Sent from my XT912
All right. It's the same thing with the Data Connection. Especially when I'm @ work, I set it to edge because I didn't need 3G.
Sure, you can let your Razr do almost everything from alone, but everything automated needs CPU / Battery. So toggles are battery's best friends
Sent from my XT910 using Tapatalk 2
HSD-Pilot said:
All right. It's the same thing with the Data Connection. Especially when I'm @ work, I set it to edge because I didn't need 3G.
Sure, you can let your Razr do almost everything from alone, but everything automated needs CPU / Battery. So toggles are battery's best friends
Sent from my XT910 using Tapatalk 2
Click to expand...
Click to collapse
Yeah, I thought about that while making this thread, but since there are only two ROMs that have pull down toggles as of now, Liquid Smooth and Eclipse, for CDMA anyway.
I also thought about 2G, but I don't know a method of of cycling to other than turning off Mobile Data. And you would be surprised, JuiceDefender uses really small amount of battery. It doesn't show up in battery stats, ever.
Sent from my XT912
But with Widgetsoid you can add customized Notification - Toggles in every Rom.
I've used JuiceDefender for an while, but I missed the Email push. So it's gone from my Phone
Sent from my XT910 using Tapatalk 2
HSD-Pilot said:
But with Widgetsoid you can add customized Notification - Toggles in every Rom.
I've used JuiceDefender for an while, but I missed the Email push. So it's gone from my Phone
Sent from my XT910 using Tapatalk 2
Click to expand...
Click to collapse
I'll also add that! You learn new things every day.
Sent from my XT912
If I used all these tips I could nearly bought a low end phone for 1/4 of the price of my razr
maarawoe said:
If I used all these tips I could nearly bought a low end phone for 1/4 of the price of my razr
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Could you please rephrase that?
Updated with Animations, new script, and Common Sense!
maarawoe said:
If I used all these tips I could nearly bought a low end phone for 1/4 of the price of my razr
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Click to collapse
I disagree. I have used many of these techniques (including turning off data) for a couple of years on various android devices. With the use of notification toggles you can still use it as a smart phone while receiving all the emails you need and maintaining good battery.
Sent from my XT910 using xda premium
Sorry I expressed myself incorrectly (in fact not correctly at all ;-) ) - I wanted to say that its a bit sad that we have to use such workarounds to get a worthy battery juice on the high end and quitew expensive phone..
I didn't wanted to disparage the tips above at all...
maarawoe said:
Sorry I expressed myself incorrectly (in fact not correctly at all ;-) ) - I wanted to say that its a bit sad that we have to use such workarounds to get a worthy battery juice on the high end and quitew expensive phone..
I didn't wanted to disparage the tips above at all...
Click to expand...
Click to collapse
Yes, I would agree, and some of my own tips I don't even use. But they're all there in case somebody needs their phone for some situation to last a little bit longer.
Does anybody know the difference between mot_hotplug and the hotplug governor?
WillKennerley said:
Does anybody know the difference between mot_hotplug and the hotplug governor?
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Click to collapse
Yes, mot_hotplug is just hotplug for Gingerbread. Since I've been on ICS for a while, that's the way I'm speaking. So mot_hotplug and hotplug are the same thing. Just different versions of Android.
Sent from my XT912
OP updated with awesome new tweaks scripts Kernel Modules, freezable apps, and a small performance section.
Excellent tips. I have a couple of questions though. What is the difference between Hotplug and HotplugX? Maybe we could put together a list of apps that are battery thirsty and their more effective alternatives.
Good work!
g_mosh said:
Excellent tips. I have a couple of questions though. What is the difference between Hotplug and HotplugX? Maybe we could put together a list of apps that are battery thirsty and their more effective alternatives.
Good work!
Click to expand...
Click to collapse
Thank you.
For clarification, when there is less CPU load, instead it taking 1 second to turn off CPU 1 it takes .5 seconds. When CPU 1 is needed it is turned on faster. Hotplugx does not just have different values of up threshold and down threshold, it actually has optimized code to turn the cores off and on faster. Those are hypothetical values, but you get the point.
Good idea! I added some that I know of, but I don't exactly go crazy with installing apps, so if anybody can give some help here, it's very welcome.
Updated with new battery sucking apps and links, more build.prop tweaks and clarified hotplugx.
Hi, all!
Some people, like me, may have downloaded a cpu-monitor app like System Tuner then notice their second cpu (cpu1) always appears offline.
First off, I recently realized that that is often inacurate. Using another app like SystemPanel would show both cpus being online, and more importantly, checking sys/devices/system/cpu/cpu1/online would show it's "1" indicating online. Many cpu app's inability to read cpu1's info is because "cpufreq" folder is missing from cpu1 folder (if you check cpu0's cpufreq folder it's always there).
K, now also, some poeple like me, thought cpu1 was really offline, and used System Tuner's "Force all cpus online" option, and viola, after reboot the second cpu showed up. But why? Cuz a "cpufreq" folder is found in cpu1 again.
What is interesting is both files "affected_cpus" and "related_cpus" would show "0 1" meaning core 0 and core 1 are in sync and both coordinated simultaneously. if you change settings(freq,governor,etc) for one core it automatically changes the other.
Now here's the tricky part, however after the tablet goes to sleep, when I wake it, cpu1's "cpufreq" folder would disappear again, meaning Sytem Tuner would show cpu1 agains as "offline". But if you chekc "online" file in folder you'll see it's still online ("1") and SystemPanes still shows cpu1 activity. However "affected_cpus" and "realated_cpus" will show only "0" meaning only cpu 0 is in this categoty and cores are no longer in sync.
Conclusion: so far what I deduced is my tablet in its default state has both cores online, but are off-sync. After turning on "Force all cpus online" and rebooting, they are both online and in-sync. After the device goes to sleep and wake, the two cores are still online but now off-sync.
The important thing about this investigation is how much it affects 3D performance. I was always confused why my device lags with a aged-game like Counter Strike portable but is perfectly smooth in a consol-quality game like Mass Effect Infiltrator. My current thought is Mass Effect acttively tweaks your cpu while most other games leave cpus as they are.
Benchmarking (using market benchmark apps):
(First off, the FPS difference may seem small but in running the actual games for some reason it made a enormous difference, often the difference between crashing and not crashing/playable or unplayable in Nova3/Shadowgun)
Default, newly flashed rom: FPS :33 (Some games fail to load graphics properly for some unknown reason)
Turn on "Force all cpus online" with Sys Tuner: FPS 39-40 (All games are silky smooth, no errors, tablet temp hotter)
"Force cpus online", then after wake from sleep: FPS: 33-34 (not as smooth before sleep, but games generally load properly)
**Switching my cpu0 gonernor to the same governor I think cpu1 is using: FPS 35-37 (no errors, almost as smooth as "Force cpus online")
Here's a crappy surprise --Cpu1 off (turn off dual core): FPS: 39. (Completely smooth, zero errors, hottest tablet temp)
**after cpufreq folder disappears from cpu1 I cannot be sure which governor cpu1 is using, but checked with Kernel Tuner and believe the system switch it back to "performance2" which is a governor foudn in my tablet.(it it not like "performance" governor) upthresh 60 downthresh 30 freqstep 5.
Conclusion:
This leads me to the conclusion that having both cpus online does not necessarily improve performance, but if the two cpus are off-sync it definitely BUTCHERS performance. It does so so badly that running one core is actually better. Having both cores run the same governor also seems to help somewhat.
Need help:
I hope the info so far may helped some people, but the help I also really need is someone to tell me how are "affected_cpus" and "related_cpus" controled by the system? So far I had no sccucess modding their values and forcing cpus to "sync". I enter "0 1" but it doesn't go through. Since having the cpus in sync seems to give good performance and lower temp (single core was good but temp was noticeably high), I want my cpu cores to remain in sync, but currently it undoes the sync after waking from sleep. I need to understand how and why the system somtimes decides to coordinate both cpus synchronously so both cpus appear under "affected_cpus" and "related_cpus"?
Thanks to anyone for reading!
This post is intended for only rooted users of Xperia go/P/U/sola phones that are currently running the stock firmware build 6.2.A.0.400 / Jelly Bean (or in the case of U/sola, the ported equivalent), and only users who are familiar with the terminal. If you satisfy the above criteria, read on.
Hi all, I've just discovered that disabling the second core of my Xperia go's CPU actually improves overall UI responsiveness in JB rather than the contrary, despite logic dictating otherwise. In fact, it's so smooth now that I can safely say it directly rivals GB's smoothness and response times (and this is from a long term GB user who just recently made the jump to JB, too).
I'm making this thread because I'd like to see if others will experience similar effects from disabling the second CPU core of their NovaThor U8500 SoCs.
Disclaimer: I am not responsible for anything in the unlikely event that you - somehow - break your phone from making this small tweak. Just saying. You should be fine if you follow the instructions, though.
You have to be running on battery power to be able to spot any difference since the UI's sluggishness isn't as noticable when connected to a power source. Oh, and leave your governor / clock speed settings at stock (i.e. interactive governor, 200 MHz min, 1000 MHz max) for a fairer comparison.
Open up a terminal window, then enter Superuser / root mode and enter the following command:
Code:
echo [B]0[/B] > /sys/devices/system/cpu/cpu[B]1[/B]/online
(that's a ZERO immediately after echo and a ONE in /cpu/cpu1)
This should immediately take the second core offline, you can verify it with the following command (do consider first opening an additional new terminal window for this purpose):
Code:
cat /proc/kmsg
Look for something along the lines of:
Code:
<5>[35017.521636] CPU1: shutdown
Now, start testing the responsiveness of the UI, it should be extremely smooth in comparison to what it normally is. Skeptics, please do feel free to drop your jaws at this point, because I sure did when I first tried this. I noticed that the processor's speed seemed to ramp up and down much more aggressively with the second core disabled, but that could just be me seeing things.
To re-enable the secondary core again, use this command:
Code:
echo [B]1[/B] > /sys/devices/system/cpu/cpu[B]1[/B]/online
(that's a ONE immediately after echo and a ONE in /cpu/cpu1)
You can verify that the core is enabled in the dmesg logs (remember the earlier cat /proc/kmsg command?):
Code:
<4>[35155.743408] CPU1: Booted secondary processor
<6>[35155.745011] Switched to NOHz mode on CPU #1
At this point, you're likely to see the sluggishness make a return.
This should be fairly obvious, but don't go doing "smart" (that was sarcasm, in case you missed it the first time) stuff like disabling the first core (or even both) because you'd clearly be asking for trouble.
I suspect that the presence of the second core is preventing the governor from ramping up the processor speed on battery power, leading to the sluggish UI response. It has been noted before that a pair of cores running at a lower clock speed can potentially be more power efficient than a single core running at a higher clock speed, so I'm not too sure how this would affect the phone's battery life. I haven't yet noticed any negative impacts of the change on battery life - if anything, battery life appears to be improved, but I'd like more people to test this out (preferably those on P, U and sola phones).
There is an app to do this.
Enviado desde mi ST25i usando Tapatalk 2
Diego910 said:
There is an app to do this.
Enviado desde mi ST25i usando Tapatalk 2
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But in Xcore app the second core turns on automatically after sometime..
Does dat happen with the terminal method?!
Sent from my ST25i
In X-Core, after disabling the core, go to superuser app nd toggle permissions for X-Core... Second core doesn't switch on fr me that way...
Press thanks if I helped :thumbup:
dotafan said:
In X-Core, after disabling the core, go to superuser app nd toggle permissions for X-Core... Second core doesn't switch on fr me that way...
Press thanks if I helped :thumbup:
Click to expand...
Click to collapse
Tried it but in vain..
Sent from my ST25i
weired..
I just wanted to share a few tricks i learned to get graphics-intensive games to run much more smoothly. These commands should be run in android terminal emulator as root, in adb shell as root, or ran as a script with any script-running app with root privileges
All of the following is only temporary and will be reset to normal after a reboot
Code:
stop mpdecision
stops the hotplugging binary used to turn on/off extra cpus we want this gone because we want to specify which cpus are online ourselves
Code:
echo 1 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu2/online
echo 1 > /sys/devices/system/cpu/cpu3/online
turns on the other cpu cores (you probably don't need all 3 extra cores on, just turning cpu1 online makes a big difference)
Code:
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
sets all online cpus to maximum frequency
Code:
echo performance > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/pwrscale/trustzone/governor
sets the gpu to stay at maximum frequency
as a script:
Code:
#!/system/bin/sh
stop mpdecision
echo 1 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu2/online
echo 1 > /sys/devices/system/cpu/cpu3/online
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/pwrscale/trustzone/governor
would this help improve general smoothness across the ui and other apps? Does it reduce the choppiness in the maps app????
It would, but i'm not sure how long the battery would last.
Faux kernel with Faux Clock you can do all this! It is great!
Jeepers. Seems the device gets hot enough without doing this, but what makes the user happy.
rushless said:
Jeepers. Seems the device gets hot enough without doing this, but what makes the user happy.
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Click to collapse
havent noticed mine get that hot at all?
Perhaps subjective to the user. Playing 3d games gets the device hot and OC ing will get it hotter. If the user does not mind, that is what matters.
may add this to the roms/ guides / etc list
bsimpson1 said:
as a script:
Code:
#!/system/bin/sh
stop mpdecision
echo 1 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu2/online
echo 1 > /sys/devices/system/cpu/cpu3/online
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/pwrscale/trustzone/governor
Click to expand...
Click to collapse
You might also want a script for when you're done with gaming. Probably something like:
Code:
#!/system/bin/sh
start mpdecision
echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo ondemand > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/pwrscale/trustzone/governor
This way once you're done with gaming/whatever, the phone can go back to scaling down CPU speeds and hotplugging cores to save battery. It's not very useful for an idle phone to have all 4 cores active and running at full speed.
What if I just reboot the phone, would that stop the script(s)? Anyone try the S4 with PSP emulator (PPSSPP)?
IamPro said:
What if I just reboot the phone, would that stop the script(s)? Anyone try the S4 with PSP emulator (PPSSPP)?
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Click to collapse
Rebooting would restart mpdecision, and therefore let your hotplugging go back to working order. I'm not certain it would reset your governor, though. So your phone may still be running at full speed 24/7, even after a reboot.
Cilraaz said:
You might also want a script for when you're done with gaming. Probably something like:
Code:
#!/system/bin/sh
start mpdecision
echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo ondemand > /sys/devices/platform/kgsl-3d0.0/kgsl/kgsl-3d0/pwrscale/trustzone/governor
This way once you're done with gaming/whatever, the phone can go back to scaling down CPU speeds and hotplugging cores to save battery. It's not very useful for an idle phone to have all 4 cores active and running at full speed.
Click to expand...
Click to collapse
I don't think start mpdecision will do what you're intending but according to cat "/proc/`pgrep mpdecision`/cmdline" it was started by "mpdecision --nosleep --avg_comp"