Database Develop

Do custom rom's modifications improve speed or it's a kernel issue only?

Hi. I just wonder about this.
Many times, when a new firmware comes out, after 2-3 days there are custom roms based on it, with tweaks (edited build.prop for example) and other speed mods.
Do they really improve speed? I mean seriously, if someone tests the 3-4 most known stable custom roms, based on same android version, and with the same kernel, also with the same apps on it, will be any noticeable difference in speed?
I see other devs releasing a rom after 3 days, and I can't explain what kind of tweaks could give more speed being stable at the same time.
Maybe custom roms are just modded/themed stock roms, and when there's a speed differenve it's because of the kernel inside.
Just being curious about that (also could make the choice of the rom itself easier...)

Any opinion? From your experience at least.
Sent from my GT-I9000 using Tapatalk

A mixture of both .
jje

definately a mixture of both. They both make huge improvments over stock. in my opinion anyway

probaby karnel or speed
some costum rome improve your phone speed or karnel speed. especially visuality.

temyes said:
some costum rome improve your phone speed or karnel speed. especially visuality.
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Click to collapse
I don't need to improve my phone's karnel speed, it gets enough girls as it is.
However in my experience speed improvement and the smoothness that comes with it are mainly the process of the kernel as that controls the interaction between android and the hardware, where most performance bottlenecks happen. The ROM itself adds functionality, appearence and most important of all...stability.
At least so it appears to me.
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rschenck said:
I don't need to improve my phone's karnel speed, it gets enough girls as it is.
However in my experience speed improvement and the smoothness that comes with it are mainly the process of the kernel as that controls the interaction between android and the hardware, where most performance bottlenecks happen. The ROM itself adds functionality, appearence and most important of all...stability.
At least so it appears to me.
Sent from my GT-I9000 using XDA Premium App
Click to expand...
Click to collapse
I partially agree. I mean, if we assume stock roms are stable, custom roms can;t be more stable.
So, they provide some speed, maybe because there are not so many system apps inside, and mostly they provide some nice mods (visual and functional).

I moved back to 4.0.3

After trying many Roms...i decided moving back to 4.0.3
Now my phone works well ,Super fast ,and very very Smooth. It seems that JB "4.1.2" is making Lg 4x HD very slow... cyanogenmod too...
Im running ics "4.0.3 v10B"
I was thinking 4.1.2 will be better
Sent from my LG-P880 using Tapatalk 2

and why should we care?

theofficialpimp said:
and why should we care?
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Don't be so rude, he's just reporting. I admit that he should have tell us a bit more about the different performances but this is a forum ! He is reporting something so that users who are in the same case could do as he did.
Sent from my LG-P880 using xda premium

im sorry for being rude

I had a few phones with Android.
I saw that the pre-installed system is almost always better than update.
Wysłane z mojego LG-P880 przy użyciu Tapatalk 4

sQuAshPL said:
I had a few phones with Android.
I saw that the pre-installed system is almost always better than update.
Wysłane z mojego LG-P880 przy użyciu Tapatalk 4
Click to expand...
Click to collapse
that's because they had all the time they have to develop a better ROM before the official launch. But once after launch whiners and babies will cry for updates so they had to rush a bit more, which sacrificed optimisation time.
Good ROM takes time. If CyanogenMod didn't have nightlies or RC - just stable releases, god it could be ages before anything from them sees light.

Life'sGood said:
that's because they had all the time they have to develop a better ROM before the official launch. But once after launch whiners and babies will cry for updates so they had to rush a bit more, which sacrificed optimisation time.
Good ROM takes time. If CyanogenMod didn't have nightlies or RC - just stable releases, god it could be ages before anything from them sees light.
Click to expand...
Click to collapse
Maybe LG is working on.4.2.2 yet and want a perfect 4.2.2 so they dont.tell anything and working very long ... and it takes time
Sent from my LG-P880 using xda app-developers app

GalaxyVolvoZ said:
Maybe LG is working on.4.2.2 yet and want a perfect 4.2.2 so they dont.tell anything and working very long ... and it takes time
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
You're dreaming dude IMO we won't get official 4.2.2 nor 4.3
Sent from my LG-P880 using xda premium

Mm, probably not, but why is it shocking to you all that 4.0.3 is faster? :s The lower the android version, the less resources it needs because it has less features, less processes, looks worse, lower demand for high quality rendering etc etc.
Think about it, would running 4.3 be as fast as running 2.3.x on it?
In my eyes, the lower the android version, the "Faster" it will appear.. Also, post some benchmarks of v10, and we can compare them to a benchmark of 4.3?
Edit1:"Optimizations" You mean they add placebo to the stock rom? fact is, CM9 will be faster then V10, and CM10 will be faster then V20. Say they release V30 as 4.2.2, you can bet your ass CM10.1 would be faster, v40 as 4.3, CM10.2 would be faster. v50 as 4.4 say, CM11? Would probably be faster than it.

penguin449 said:
Mm, probably not, but why is it shocking to you all that 4.0.3 is faster? :s The lower the android version, the less resources it needs because it has less features, less processes, looks worse, lower demand for high quality rendering etc etc.
Think about it, would running 4.3 be as fast as running 2.3.x on it?
In my eyes, the lower the android version, the "Faster" it will appear.. Also, post some benchmarks of v10, and we can compare them to a benchmark of 4.3?
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Click to collapse
No higher Android better Performence. Because it has more features, and can handle the Hardware better. For Example I mean Android 1 Beta dont support Dual Core Processor. Because the Rom doesnt detect it. And Android 4.3 can handle Bluetooth 4.0 and can handle the Ram and Processes better. Like compare windows 2000 with Windows 7 64 Bit.
If the Hardware Requirements is ok, we can have the full Power of it with good Android Version.
Sent from my LG-P880 using xda app-developers app

GalaxyVolvoZ said:
No higher Android better Performence. Because it has more features, and can handle the Hardware better. For Example I mean Android 1 Beta dont support Dual Core Processor. Because the Rom doesnt detect it. And Android 4.3 can handle Bluetooth 4.0 and can handle the Ram and Processes better. Like compare windows 2000 with Windows 7 64 Bit.
If the Hardware Requirements is ok, we can have the full Power of it with good Android Version
Click to expand...
Click to collapse
W.T.F. :banghead:
Did you really just try arguing that?

For me the stock rom 4.0.3 was fast but had alot of lag issues when installing apps, closing apps etc.. Now on stable cm 10.1 i got no issues at all and my battery life doubled.
Sent from my LG-P880 using xda app-developers app

SimonTS said:
W.T.F. :banghead:
Did you really just try arguing that?
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Click to collapse
There is some truth when it comes to 4.3. For me cm10.2 is like lightning even compared to v10a. v10a ICS was pretty fast, but not as good as this. Its the best rom from LG with no tinkering though
Sent from my smart frying pan (Tegra 3)

Well try to use CM 10.1.3 latest with iodak v7.. U feel much difference!!! Its much battery friendly and Smooth

I moved back too, but to "official" 4.1.2 not 4.0.3. im using Jellyfish HD 1.3 (with iodak kernel) and its great. Finally MHL works, camera is awesome, video recording is smooth not like on cm. everything is smooth and battery life is much much better. I don't need to worry anymore if something will not work (like on 4.2 customs)
oh and games are more laggy, thats only one disadvantage

Sorry but we need to differentiate between pure android and OEM modified android. There is no possible way pure ICS is smoother/faster than later pure android versions. Resource management has only improved in newer versions of android. Hence low end devices always experience a performance improvement from newer aosp based Roms, from their latest stock firmware. Its common that OEMS introduce poor code, bugs etc that may take from the user experence in newer versions of their firmware, this is possibly the case of our device. Although there is a very minimal difference between stock 4.1 android and custom ROM/ kernels in terms of battery vs performance(other devices I own, the difference is night and day.). Which indicates lg done a great job of android 4.1 on our device.

JoinTheRealms said:
Sorry but we need to differentiate between pure android and OEM modified android. There is no possible way pure ICS is smoother/faster than later pure android versions. Resource management has only improved in newer versions of android. Hence low end devices always experience a performance improvement from newer aosp based Roms, from their latest stock firmware. Its common that OEMS introduce poor code, bugs etc that may take from the user experence in newer versions of their firmware, this is possibly the case of our device. Although there is a very minimal difference between stock 4.1 android and custom ROM/ kernels in terms of battery vs performance(other devices I own, the difference is night and day.). Which indicates lg done a great job of android 4.1 on our device.
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Click to collapse
That's total rubbish. I've seen nexus 7 users get worse and worse lag as they upgrade. That's pure android straight from Google! Nexus 4 users too. 4.3 Does have optimizations, and good ones at that. Its bloody fast no ****. But I've never seen a direct correlation between higher android version and smoother performance. Never. And I've had too many phones due to breakages. I knew a guy who swore by froyo when cm10 was available, because it was bloat free and smooth. Just because new bloat isn't directly visible doesn't mean it isn't there.
Sent from my smart frying pan (Tegra 3)

@non4 said:
That's total rubbish. I've seen nexus 7 users get worse and worse lag as they upgrade. That's pure android straight from Google! Nexus 4 users too. 4.3 Does have optimizations, and good ones at that. Its bloody fast no ****. But I've never seen a direct correlation between higher android version and smoother performance. Never. And I've had too many phones due to breakages. I knew a guy who swore by froyo when cm10 was available, because it was bloat free and smooth. Just because new bloat isn't directly visible doesn't mean it isn't there.
Sent from my smart frying pan (Tegra 3)
Click to expand...
Click to collapse
Do you seriously think google push crazy amounts of money into making a worse os than they had? I agree, and said in my previous post that updates occationally brake things, Its understandable for the android ecosystem(im not saying its accepable, i pisses me of and ive experenced it myself.)
Each update is a net good for android, btw google isnt bloating android, oems are responsiable for that, and oftern ruin what would have been a good update for a device. ICS on this device was better for gaming, but it distroyed battery , JB fixed that found a better balance.
I know people who still cling to windows xp, some day they will have to reliese, underling windows 8 is a much improved os.(no matter how much they or I disagree with the interface)

timon12 said:
I moved back too, but to "official" 4.1.2 not 4.0.3. im using Jellyfish HD 1.3 (with iodak kernel) and its great. Finally MHL works, camera is awesome, video recording is smooth not like on cm. everything is smooth and battery life is much much better. I don't need to worry anymore if something will not work (like on 4.2 customs)
oh and games are more laggy, thats only one disadvantage
Click to expand...
Click to collapse
Please can you link me to Jellyfish ?
Sent from my LG-P880 using xda premium

ectoplasma22 said:
Please can you link me to Jellyfish ?
Sent from my LG-P880 using xda premium
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Click to collapse
http://dlbase.seo-fuerst.de/?dir=LG-Forum/LG-P880/Jellyfish HD/Jellyfish Versionen/v1.3/

Please help with decision

Hello,
Im ćhanging rom every day, bećuase:
-I stay in ĆM10 max 2-3 days, why? This rom looks really good (i mean design), but performanće is bad as hell, and this is reason why i ćhange always this rom, but im baćk only for design,
-GB is good but i don;t know whićh one is better for me
-Froyo i was using 1-3 months, bećuase have the best performance and life battery, and proćentage better (like in 4.1.2 semć overlay)
And there is my problem, how many apps now don;t have support for 2.2? Bećuase i heared "foryo is the best one for our X8, but many apps don't working, bećause froyo is too old and don;t have support for many apps" This is truth or not?
Important for me is multitask and good design.
Thanks for help!

Of course: more and more apps not running on froyo.
Use any gingerbread rom, this will give the best performance/compatibility ratio. The most app run on API level 10 (2.3.3+) and all gb rom give significant better multitasking performance than any "supersmooth" jb rom.
Anyway the choice is your...
Froyo: best performance/multitask, limited app compatibility
Gingerbread: good performance/multitask, good app compatibility (more than 90% of apps running)
ICS/JB: average performance, critical multitask, best app compatibility

pilu1978 said:
Of course: more and more apps not running on froyo.
Use any gingerbread rom, this will give the best performance/compatibility ratio. The most app run on API level 10 (2.3.3+) and all gb rom give significant better multitasking performance than any "supersmooth" jb rom.
Anyway the choice is your...
Froyo: best performance/multitask, limited app compatibility
Gingerbread: good performance/multitask, good app compatibility (more than 90% of apps running)
ICS/JB: average performance, critical multitask, best app compatibility
Click to expand...
Click to collapse
Okey i only want to know about apps, so i stay in GB, Thanks for info Pilu!
But now whićh GB ćhoiće. xD
Btw Thanks!

You can choice any gb rom, the performance differences is minimal.
I can suggest only: use clean cm7 rom (minicm7 or gdx) and make your own design with themes/apps.
Try some tweaking method, but better if you NOT combine too much tweaks because mixing of different tweaks can make conflicts and can decrease the performance...
The design is relative, some member like the small, fat, dark haired women, some like the tall, slim, blondes...
(personally I hate the holo design, my wife's xperia ray have much better user interface with gb than my Z with jb...)

I have the same dilema, I've been away from these forums for a long time now since I decided to stop "ROM swapping" and stuck with GingerDX, but even GingerDX is slow when trying to do a simple google search, or any real-world scenario usage.
Actually after a (not very long) google search, I arrived to the conslusion that the vast majority of apps still require Android 2.2 MINIMUM, and those that say otherwise usually require Android 4.0 or higher anyway.
FroyoPro is only not the first option because it's very outdated in terms of stock apps and even libs/kernel support. if Anyone was to update it and make it work on nAa-05 I bet it would be the best ROM on our devices.

GB rom
i think XPeria soul engine is quite good and stable rom .. good for multi tasking and bug free..
design is also good..
and very very light wieght
using with nAa kernel 14 is a good combination.
---------- Post added at 06:55 AM ---------- Previous post was at 06:54 AM ----------

_JoaoCampos said:
I have the same dilema, I've been away from these forums for a long time now since I decided to stop "ROM swapping" and stuck with GingerDX, but even GingerDX is slow when trying to do a simple google search, or any real-world scenario usage.
Actually after a (not very long) google search, I arrived to the conslusion that the vast majority of apps still require Android 2.2 MINIMUM, and those that say otherwise usually require Android 4.0 or higher anyway.
FroyoPro is only not the first option because it's very outdated in terms of stock apps and even libs/kernel support. if Anyone was to update it and make it work on nAa-05 I bet it would be the best ROM on our devices.
Click to expand...
Click to collapse
FroyoPro should update, but anyone haven't permision for thath, unfortunately. Best experinće for me is FroyoPro (good auto brig, life battery, and simple, but a lot of my apps have suppor 2.3+), If 4.1.2 rund in our deviće like GB, my dilema will gone, but unfortunately for me 4+ is only for desing not for daily using

chrissykess said:
FroyoPro should update, but anyone haven't permision for thath, unfortunately. Best experinće for me is FroyoPro (good auto brig, life battery, and simple, but a lot of my apps have suppor 2.3+), If 4.1.2 rund in our deviće like GB, my dilema will gone, but unfortunately for me 4+ is only for desing not for daily using
Click to expand...
Click to collapse
You're free to build up on FroyoPro as long as you make it clear that it's an update on FroyoPro. The latest FroyoPro available is from another developer other than the original already.

_JoaoCampos said:
You're free to build up on FroyoPro as long as you make it clear that it's an update on FroyoPro. The latest FroyoPro available is from another developer other than the original already.
Click to expand...
Click to collapse
Im using froyo Pro from lrakkarl

chrissykess said:
Im using froyo Pro from lrakkarl
Click to expand...
Click to collapse
Yeah, he's not the original dev!

Best rom for T în battery life

Hi,i have dark lords homami v5 rom and i wanted to know if someone has found a rom with more battery life
Sent from my LT30p using xda app-developers app

adrianncj said:
Hi,i have dark lords homami v5 rom and i wanted to know if someone has found a rom with more battery life
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
tilal's 4.4 OMNI rom seems to have the best battery in my opinion .... i wasnt going to go back to OMNI until it had more of its features but to be honest its fast smooth stable and battery lasts A LOT longer than any other rom i have been on

Stock ROM is best for battery.

Stock ROM debloated and then left alone
Keep in mind the display is the biggest consumer, then connectivity options, then only software. There its mostly Widgets and other things which need to constant update.

In my opinion,Hybrid rom(stock kernel) is the best rom i ever used..it provides good battery life too..

oddeceed said:
tilal's 4.4 OMNI rom seems to have the best battery in my opinion .... i wasnt going to go back to OMNI until it had more of its features but to be honest its fast smooth stable and battery lasts A LOT longer than any other rom i have been on
Click to expand...
Click to collapse
As surprising as this may sound the above is true. I seem to have equal battery life with Stock rom and Omni (except when 3G is enabled). 4.4 is so damn light. Keep in mind I am not a person who debloats. Have all sorts of apps syncing and background services running.

[Q] Do any TouchWiz ROMs (i.e. FireKat) really speed up the phone?

I have a new T-Mobile Note 4 (that I'm using on AT&T) and the phone is quite fast, but I enjoy tweaking and am planning to root the phone for Xposed and a few other things, so I was also thinking about flashing a new ROM.
I also use GearVR so I need a compatible (TouchWiz?) ROM and was thinking about FireKat.
Does it really make that big of a difference?
I'm more concerned about performance than battery life, but of course battery life is important too.

Yes, it makes a huge difference.

To go into a bit more detail for ya, yes they do help. Most of the custom roms have been de-bloated and tweaked for "power users" for lack of a better term. They have been adjusted to allow better usability and eliminate some of the useless features. Some devs (not all, be sure to do your research and read the boards) but extra effort into making their roms perform better and allow customization. Be warned though, from my experience, with more customizations and tweaks to appearance you will take a hit to performance.

Thanks very much for the help.
It seems like a lot of ROMs are tweaked for battery life and I often wonder if the performance isn't that good as a result.

sofakng said:
Thanks very much for the help.
It seems like a lot of ROMs are tweaked for battery life and I often wonder if the performance isn't that good as a result.
Click to expand...
Click to collapse
FireKat is tweaked for both performance and battery life. My phone is 10 times faster than stock with FireKat V9 and the good battery life is a nice side effect. Make sure your follow the instructions in the first and second posts for maximum performance/battery life.

Maybe everyone can submit performance benchmarks here.

how about this, I used Nova Launcher when im not rooted but when I am rooted (like now running firekat) im on TW all the way.

Don't go by benchmarks, go by feel. Like someone said above read through the different Dev posts and in most, people have done what your talking about and posted numbers. To the original poster, FireKat is awesome. Mega does an incredible job and its definitely worth trying his efforts if you don't mind flashing. The speed difference as well as battery performance is nothing short of incredible on this device. I've tried many different ROMs and always come back to this one.
Of course your experience may vary, but that's what's so awesome is the ability to try a different ROM. Like you, I have a TMobile Note 4 on AT&T. Fortunately for us there are many talented devs for this phone which gives us many options. Give them a try and see for yourself, and trust me, you won't be disappointed.
Just do yourself a favor and don't go by benchmark numbers, and go by what you feel is the fastest and smoothest. Numbers are artificial and change so often that it's much better in my opinion to feel for yourself.
Good luck and enjoy the device man, it's awesome.

I am a power user. I have a gear vr. None of the custom ROMs support vr. I have a backup nandroid of stock ROM, whenever I want to use vr, I nandrood back to it. Daily driver is cm12.

This is my benchmark score anyway.
http://imgur.com/aMxJEac
Touch above 50k using the latest cm12 build.
This is the smoothest running ROM I've used.
Most stable is firekat for sure.

Ugh. Gear VR doesn't work on FireKat?
I've been reading the thread and it says that it would work with a custom kernel. Has anybody tried that?

yes, it's my favorite ROM so far.

lamuertex said:
This is my benchmark score anyway.
http://imgur.com/aMxJEac
Touch above 50k using the latest cm12 build.
This is the smoothest running ROM I've used.
Most stable is firekat for sure.
Click to expand...
Click to collapse
I checked ur screen shot, how are you getting lte? is there a fix on cm12?

michwolverines00 said:
I checked ur screen shot, how are you getting lte? is there a fix on cm12?
Click to expand...
Click to collapse
I haven't had connectivity issues like some may be experiencing.

sofakng said:
I have a new T-Mobile Note 4 (that I'm using on AT&T) and the phone is quite fast, but I enjoy tweaking and am planning to root the phone for Xposed and a few other things, so I was also thinking about flashing a new ROM.
I also use GearVR so I need a compatible (TouchWiz?) ROM and was thinking about FireKat.
Does it really make that big of a difference?
I'm more concerned about performance than battery life, but of course battery life is important too.
Click to expand...
Click to collapse
If you want to speed up the appearance of your phone...make it snappier....go into Developer settings and reduce all animations to 0.5 or turn them off completely. It makes a big difference.

Firekat + AEL kernal = ROM bliss with VR function.

Face_Plant said:
FireKat is tweaked for both performance and battery life. My phone is 10 times faster than stock with FireKat V9 and the good battery life is a nice side effect. Make sure your follow the instructions in the first and second posts for maximum performance/battery life.
Click to expand...
Click to collapse
Really ten times? Not even close to twice as fast, maybe half as fast. While Firekat and Dynamic Rom are faster than stock touchwiz......Slim roms or Cyanogenmod are the only thing that REALLY speed up the phone. Touchwiz will always be touchwiz

It's more of a speed upgrade than that. Mega has been tweaking the speed for 9 versions. He's got skills.

Do any of the ROMs speed up gaming at all?
For example, I also have an iPhone 6 Plus and several games are silky smooth on it (Galaxy On Fire 2 HD, Terraria, Shadowgun), but on the Note 4 the performance is much lower. It's not horrible, but it's nowhere near as smooth as iOS. (note: this isn't meant to disrespect Android or the Note 4, but I'm honestly wondering about the difference because I have both phones and compare them side-by-side)

I think what you may really be looking for is a custom kernel. A lot of them are in original android development. I can link you to others.
I'm testing hyperdrive rom today on this phone, however and just downloaded those games. Very zippy.
http://forum.xda-developers.com/showthread.php?t=2919441
We'll pretend you didn't just admit you have an iPhone.