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[Q] [Kernel Test]4.20.2011 Which has better battery life?

Hey folks,
I am giving two kernels out to test. Don't worry, both are quite stable. However, I am looking at some different settings to see which gives better battery life. So, in an effort to avoid any "placebo effect" results, I am not saying which settings these are just yet.
What I am looking for, if you folks could be so kind as to check:
Battery life between the two.
Performance between the two.
Neither of these kernels are overclocked.
Please test using the same governor between both, preferably Ondemand.
Thanks!!!
Kernel a
http://www.mediafire.com/file/p85vkw9a1329kb8/a.zip
Kernel b
http://www.mediafire.com/file/tbmpl1nlugyvgy3/b.zip

Will test and reply back at a later time
Sent from my ADR6400L using XDA Premium App

Awesome!
D

Ugh...you would drop this right when I just started doing a battery calibration.

Anybody test yet?
I am at work and can't till later.
D

I getting better battery life on a so far
Sent from my ADR6400L using XDA Premium App

I would love to help test, but I'd like to know if you have any good criteria for the testing. It's really hard to test something without any guidelines as maybe you end up using the phone more on one, or downloading or whatever, and both seem like 'moderate usage', but in reality they are quite different.
As a matter of fact, I'm having a hard time verifying the current draw on my phone, and knowing what is good or not good, in general.

Just use your phone as you normally would, for both.

Are these compatible with the new RRU?

nmyeti said:
Are these compatible with the new RRU?
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Yes, any and all versions and ROMs.
D

Cool, I'll test both out for a day each and report back.

Kernel A has better battery life thus far here...

I get no 3G with A. That might be why battery life is better...B is fine.
jc

papi92 said:
I getting better battery life on a so far
Sent from my ADR6400L using XDA Premium App
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Click to collapse
cjmcmillion said:
Kernel A has better battery life thus far here...
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Click to collapse
How can you really tell how much better the battery life is in such a short amount of time to test?

This reminds me of a test that kmobs did back in the day for kernels on the nexus. Turned out that heavily undervolting the kernel has a negative impact on battery life. Where's jlevy at. I know he remembers.

cjmcmillion said:
Kernel A has better battery life thus far here...
Click to expand...
Click to collapse
Lol, that was quick. I'm thinking he wants testing to go a little more than 30 minutes with each.

I'll test out A for 12 hours and B for 12 hours, if you think that's suffiecent. That should get me through a full charge on each.

Should be sufficient.

THATTON said:
This reminds me of a test that kmobs did back in the day for kernels on the nexus. Turned out that heavily undervolting the kernel has a negative impact on battery life. Where's jlevy at. I know he remembers.
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Click to collapse
That's correct. Stock voltage for the Nexus One was 975mV. Kmobs found that undervolting below 950mV had negative impacts on battery life.

Do i have to clear battery data everytime i switch kernels?
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Amazing!!

What an amazing battery!
Never seen that number even on my Flyer!
Really liking my Note
And btw, my brightness was ALWAYS at 90%!!
Sent from my GT-N7000

...but your battery is full?
Sent from my iPad GT-N7000 using xda premium

LordManhattan said:
...but your battery is full?
Sent from my iPad GT-N7000 using xda premium
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Got cha!! ;P
Sent from my GT-N7000 using XDA App

Did i just get trolled? I won't accept that. Someone has to go.
...I'm looking at you Matius.. Tick tack..
Sent from my iPad GT-N7000 using xda premium

He is with satan!

LOOL am sorry was sleeping, yes my battery was full but that because I took that screenshot after I plugged my phone and charged from 1 to 100 straight but the previous cycle stats was still ther..
Try it yourself, charge your phone and before taking it off the charger you will still have thae last cycle details and graph in usage..
And if you look at the screenshot, it clearly says "Battery used by the display and backlight" .....
Sent from my GT-N7000

HI,
Please take a look at my latest battery screenshots
http://dl.dropbox.com/u/10486200/capture_01.png
http://dl.dropbox.com/u/10486200/capture_02.png

mR.fR34ky said:
HI,
Please take a look at my latest battery screenshots
http://dl.dropbox.com/u/10486200/capture_01.png
http://dl.dropbox.com/u/10486200/capture_02.png
Click to expand...
Click to collapse
Even with your funny coded language I can see that that's over 3 days on one charge. Impossibru indeed

mR.fR34ky said:
HI,
Please take a look at my latest battery screenshots
http://dl.dropbox.com/u/10486200/capture_01.png
http://dl.dropbox.com/u/10486200/capture_02.png
Click to expand...
Click to collapse
Nice!
I was amazed by my battery because I watched two movies and surfed xda and websites also!
If only I can get rid of those "suspend" and "events0" I would be a happy camper
Sent from my GT-N7000

mR.fR34ky said:
HI,
Please take a look at my latest battery screenshots
http://dl.dropbox.com/u/10486200/capture_01.png
http://dl.dropbox.com/u/10486200/capture_02.png
Click to expand...
Click to collapse
Actual phone usage is pretty low though, I've gone as high as 7 days w/ just SMS and a few calls and wifi usage of less than 1hr.

LordManhattan said:
Did i just get trolled? I won't accept that. Someone has to go.
...I'm looking at you Matius.. Tick tack..
Sent from my iPad GT-N7000 using xda premium
Click to expand...
Click to collapse
So what were you saying mister doubtfull?
Tick tack huh?
Sent from my GT-N7000

That's photoshopped. The orange on the "H" isn't 100% correct. My god, when will you stop this madness!? When will you STOP!?

LordManhattan said:
That's photoshopped. The orange on the "H" isn't 100% correct. My god, when will you stop this madness!? When will you STOP!?
Click to expand...
Click to collapse
POST EDITED:
Sorry sleeplessness has adverse reactions
Sent from my GT-N7000

How do you get your Android OS to be so low. My note is always around 25% to 30%. Do you think I have something running that's draining my battery? I do know that I'm not getting anywhere near the battery life you guys are saying you are getting.

ckyllr said:
How do you get your Android OS to be so low. My note is always around 25% to 30%. Do you think I have something running that's draining my battery? I do know that I'm not getting anywhere near the battery life you guys are saying you are getting.
Click to expand...
Click to collapse
he could have disabled all animations, force-closed processes, etc.
I have bluetooth running eight hours a day, streaming music for four to five of those to it, at least three to four hours of reading massive PDFs (textbooks), ppts, and word documents, WIFI on whenever available, etc.
I've gotten 10-13 hours without too many issues. The 10 was with a LOT of screen time, wifi or data running always, and bluetooth running always.
It also depends how you charge your battery. I make sure to fully charge my battery, and then run it into the GROUND (eg note powers off completely) before I plug it back in. Every time. You get maximum capacity that way, there's a name for this, but I can't remember what.
Anyway, battery 101. Kill processes, disable unneccesary services, use WIFI when you have it, disable everything you don't need, disable sync if you want/need to, disable gps, animations, and especially use minimal screentime. I don't see why the note wouldn't pull at least 36 hours if it was left in airplane mode the whole time.

Actually I was just watching movies and listening through bluetooth, thats why I don't have other processes eating my battery but I didn't do anything special..just straight 6 hours of watching movies using mobo player..
But I noticed that using mobile data to surf the net would drain my battery faster, so try to use wifi whenever available..
Everything about my setup is stock, only de-odexed to manually install my language..
Also noticed that when my phone left idleing, there will be Android OS drain in my battery usage, wigh "suspend" and "events0" showing in BetterBatteryStats but I still didn't figure out how to solve that..
Sent from my GT-N7000

matius44 said:
Photoshopped?? Really??
Who do you think you are so that I waste my time faking pics??
Not because you were wrong ASS-uming I was lying it means you continue discrediting me..
I don't know if you are stupid or just being a jerk, either way go f**k yourself
Man the type of people you can meet on the internet is amazing..
Sent from my GT-N7000
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Hahahaha! DUDE i'm screwing with you! Calm down! It's pretty clear now that you can't detect a joke on the interwebs

guitarplayerone said:
It also depends how you charge your battery. I make sure to fully charge my battery, and then run it into the GROUND (eg note powers off completely) before I plug it back in. Every time. You get maximum capacity that way, there's a name for this, but I can't remember what.
Click to expand...
Click to collapse
This is an old technique which no longer has any effect whatsoever on the life and capacity of modern Li-ion batteries.
Sent from my GT-N7000 using XDA App

LordManhattan said:
Hahahaha! DUDE i'm screwing with you! Calm down! It's pretty clear now that you can't detect a joke on the interwebs
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Click to collapse
Haha that was actually funny when i saw that... And with ur name in sig and all i could not help laughing a little ha. Anyway, maybe just putting a jk at the end would help lol. That was awesome though ha.
edanfalls said:
This is an old technique which no longer has any effect whatsoever on the life and capacity of modern Li-ion batteries.
Sent from my GT-N7000 using XDA App
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Click to collapse
For me, charging it all the way down really helps (not to dead,then the stock software which i dont usually run has problems). It also seems to work on my ipod touch 3g quite well also.

Ryanscool said:
Haha that was actually funny when i saw that... And with ur name in sig and all i could not help laughing a little ha. Anyway, maybe just putting a jk at the end would help lol. That was awesome though ha.
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Hah yeah, a little too late now but i'll totally remember it next time
Sent from my iPad GT-N7000 using xda premium

[Q] battery life comparison exynos vs snapdragon?

Are there any comparisons of the two cpus available on the s4 when it comes to battery life? Thats the only reason for me to try to get an exynos version if its shows to be better in that respect.

Yeah, that's a good question I want to know the answer too, there are many people having testing devices but they are too hungry about testing the damn processor and gpu instead testing properly the battery life. -_-

demlasjr said:
Yeah, that's a good question I want to know the answer too, there are many people having testing devices but they are too hungry about testing the damn processor and gpu instead testing properly the battery life. -_-
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Lord knows battery Life is very important to me.

the guy that's testing whatever people tell him to test said that when his battery got down to 30% it lasted like 3 hours with max brightness and benchmarks running

frankyy714 said:
the guy that's testing whatever people tell him to test said that when his battery got down to 30% it lasted like 3 hours with max brightness and benchmarks running
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Click to collapse
With wich cpu? Also no comparison to the other version mentioned here.

I'm not convinced, even with S3 you can spend all the battery juice in 3 hours if you want. To do a proper test you need to leave the device doing the same job like an Snapdragon S4 during the same time.
Sent from my GT-I9300 using Tapatalk 2

Octa has a longer battery life than SD600.
That's why samsung used 8 cores technology.
And by the way the 5inch HD screen saves power too for both version
Sent from my GT-I9300 using xda app-developers app

HMJ-q8 said:
Octa has a longer battery life than SD600.
That's why samsung used 8 cores technology.
And by the way the 5inch HD screen saves power too for both version
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
Thaty what one hears, yes.
However I would like some actual test reports - for instance how long does the phone last for web browsing, for video playback and on standby?
I would like to see actual numbers.
As for the screen:
It is said to use 25% less power compared to previous amoled display generations. However that 25% value is something we have to trust samsung on I think, at least I have not seen any actual tests on power consuption of the display alone and it's probably not easy to test.
The way they have managed the display to consume less power is to use use phosphorescent instead of fluorescent green diodes, which use way less power. Until now they could not produce the green ones with an acceptable lifetime. The red ones have already been phosphorescent, and the blue one are still fluorescent since they are hardest to produce.
See here for some further details: http://www.phonearena.com/news/Sams...een-PHOLED-screen-tech-but-what-is-it_id40715

Hironimo said:
Thaty what one hears, yes.
However I would like some actual test reports - for instance how long does the phone last for web browsing, for video playback and on standby?
I would like to see actual numbers.
Click to expand...
Click to collapse
This. This so many times over.
So many people are parroting the "Exynos will have better battery life" thing but this really remains to be seen.
If the better battery life is in exchange for crippled A7 performance at inconvenient moments then it's useless. If better battery life isn't available for when you're using intensive apps then it's also useless.

Found amother bug (Wifi)

I came across this bug earlier today and just tested it out for the past hour or so. When the phone is on WiFi it heats up twice as fast and gets hotter than it would have just on mobile data. Depending on how many bytes your phone is transferring will depend on how hot it gets which is why some of you are experiencing freezes/reboots when updating multiple apps at the same time through the play store.
Sent from my SM-G935T using Tapatalk

Not on my exynos.
Sent from my Blackberry Bold

Brava27 said:
Not on my exynos.
Sent from my Blackberry Bold
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Sorry. I should have specified. I am using the T-Mobile Snapdragon version.

Mine doesnt
jrwingate6 said:
Sorry. I should have specified. I am using the T-Mobile Snapdragon version.
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Mine doesn't. home or corporate wifi. Only notice the heat when playing games.

jrwingate6 said:
Sorry. I should have specified. I am using the T-Mobile Snapdragon version.
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Click to collapse
Jeepers, what the heck is up with Qualcomm? The 810 was a disaster, and now you guys with the 820 have been posting all kinds of issues, I really feel for you guys.

Are you on 2.4ghz or 5? I noticed on 5ghz the battery drains very quickly, the speeds and wall penetration is nice though.

peachpuff said:
Are you on 2.4ghz or 5? I noticed on 5ghz the battery drains very quickly, the speeds and wall penetration is nice though.
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I was using 5ghz. I'll try 2.4 tonight. I didn't even realize that could make a difference.

Sprint snapdragon no issues home or work or starbucks

el7145 said:
Jeepers, what the heck is up with Qualcomm? The 810 was a disaster, and now you guys with the 820 have been posting all kinds of issues, I really feel for you guys.
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I guess. I'm just lucky or not as picky. Zero lag. Battery gets me 6 to 8 hours sot a day over 18 to 24 hours. No heat issues.
I've had the g2, g3, nexus 6, Droid turbo, galaxy s6 and this. Best phone I've ever used. With out question.
My only complaint so far is slow motion on the camera can be choppy and skip frames.
Million sold bound to be some Duds, I'm just glad mine wasn't one of them. Or I was and I'm too naive to see it. In which case I would say ignorance is bliss LOL

5ghz probably draws a little more power but shouldnt be enouhh to make the phone heat up

Ausboy 2011 said:
5ghz probably draws a little more power but shouldnt be enouhh to make the phone heat up
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Click to collapse
Thanks. That's what I thought. I just confirmed this is also happening on 2.4
Sent from my SM-G935T using Tapatalk

Normal heating
I did hands on this but did not find excessive heating issue during the wifi use , Will not say their is no heating . Same issue raises during the use of heavy app . But I would again say its normal heating .

How is standby battery life on Exynos S8?

In my experience, especially on 4G LTE, Samsung standby is rather poor. How would you say the Exynos S8 does?

4g and wifi 247 facebook YouTube xda duos calls browsing the lot. pretty happy tbh. this is exynos model and its great

Ausboy 2011 said:
4g and wifi 247 facebook YouTube xda duos calls browsing the lot. pretty happy tbh. this is exynos model and its great
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Click to collapse
8 or 8+?
Sent from my SM-G930F using Tapatalk

First 2 days mine was poor. But that was because I used smart switch to get everything from my S6. Then I realised battery drained fast. So I hard reset the phone again and installed all over. Just copied the video's and pics afterwards. Now the battery life is great. I don't know the screen on time because I keep the battery between 30% and 80%. But still I start use it at 80% and at the end of the day it is around 30%.

Ausboy 2011 said:
4g and wifi 247 facebook YouTube xda duos calls browsing the lot. pretty happy tbh. this is exynos model and its great
Click to expand...
Click to collapse
What theme is that?

I just got 43 hours total and 6.5 hours of SOT.
Best power efficiency I've ever seen in a phone.
Also read something online that the battery should retain about 95% of charge after a year of use. Hopefully this holds up!!!

8+ theme is mat black

Up.
How does the battery life of the S8 Exynos compare to the S7 Exynos , I plan to upgrade soon, just wanted to know if it worsened or anything due to the bigger display
Thanks!

Revontheus said:
Up.
How does the battery life of the S8 Exynos compare to the S7 Exynos , I plan to upgrade soon, just wanted to know if it worsened or anything due to the bigger display
Thanks!
Click to expand...
Click to collapse
It's better especially on 4g
Sent from my SM-G950F using Tapatalk

Sweet! How about standby time? Overnight possibly with Wifi off?
Thanks!

Standby time never was a big quality on Android in general and Samsung in particular. iOS does a much better job in that chapter.

Vogal said:
Standby time never was a big quality on Android in general and Samsung in particular. iOS does a much better job in that chapter.
Click to expand...
Click to collapse
False on my s7e and note 4 I could get 0.2%/hr it depends on many variables though
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