I don't know if the answer to my question is somewhere hidden between the thousands of threats but I did try to find it before(including Google and YouTube) and would be more than happy to get a reply.
I'm using custom Kernels since the Note 2 but was never able to put more time and afford in to understand how they actually work and always used the default settings.
Now I'm trying to get some knowledge on Kernel settings and what is safe to change and what not. I'm very interested on how a Kernel works and how I can boost both battery life and/or performance as well as the basic knowledge of the Kernel settings.
At the moment I'm trying to explore with trickster mod to kinda learn by doing but I always get really bad results in testing or no big changes when I change the governor. Also I'm a little afraid in messing up my phone and therefor don't change the settings much. What I know is that the same Kernel can have different outcomes on different Note 3's so please do not post just your Kernel and settings without explanation cause I would like to find the most suited Kernel and settings for my Note.
Sooo...Some help and explanations would be more than appreciated.
4aces said:
I don't know if the answer to my question is somewhere hidden between the thousands of threats but I did try to find it before(including Google and YouTube) and would be more than happy to get a reply.
I'm using custom Kernels since the Note 2 but was never able to put more time and afford in to understand how they actually work and always used the default settings.
Now I'm trying to get some knowledge on Kernel settings and what is safe to change and what not. I'm very interested on how a Kernel works and how I can boost both battery life and/or performance as well as the basic knowledge of the Kernel settings.
At the moment I'm trying to explore with trickster mod to kinda learn by doing but I always get really bad results in testing or no big changes when I change the governor. Also I'm a little afraid in messing up my phone and therefor don't change the settings much. What I know is that the same Kernel can have different outcomes on different Note 3's so please do not post just your Kernel and settings without explanation cause I would like to find the most suited Kernel and settings for my Note.
Sooo...Some help and explanations would be more than appreciated.
Click to expand...
Click to collapse
I can give you a brief (easy) explanation with comparisons to try to get you to understand what a kernel is.
A kernel is your phone's driver (like a car) where it adjusts settings of the hardware and controls how each individual part interacts with each other.
There is a reason you take a car to get tuned up, and that is because a car can go berserk as there is no "maintaining force" - YOU or the person who tunes your car makes changes to the car to make sure it does not overheat, use less power per mile travelled, control how much windshield fluid is being released or how much torque force required to ensure the car does not snap XXXXXX when going at a speed of YYYYYY.
These options are beyond the manufacturer's decisions, and therefore when people flash a kernel you immediately trip KNOX (N9005). You can give your phone less power to process, more power to process (not recommended), speed up the CPU/limit the CPU, control governors on how the disk I/O (input/output) is being handled and/or control how much the phone will swap to it's virtual memory when it reaches no memory.
People think use a custom kernel! It saves you a ton of battery life!. This statement is partially wrong. You have to understand how a kernel reacts to your phone. Even though I know that lite kernels like Wootever's Custom N3 has the best battery life, this is because it has less tweaks and features that may boggle the user, and may allow for subsequent battery life extension compared to CivZ's SneakyKat or Imoseyon's LeanKernel. By inserting new tweaks into the kernel, you allow to have more "useful" features that may add to the "driver's knowledge" - Color tweaking, Fast charge over USB, CIFS support, all are extras that the kernel supports. To save power, developers remove the junk that the manufacturers added and added their own settings to make sure they get the result they would like, then they would share it to the public. However, people recommend custom kernels as they get more options when they flash it, as well as ridding of a lot of the stock settings that manufacturers love setting (default governors, lowest CPU frequency, etc)
CPU governors work by controlling how much speed is used at a given time, a good description of what each governor does is listed here: http://forum.xda-developers.com/showthread.php?t=1736168
I/O governors (simply speaking) control how files and requests are being handled by the system, a good description of what each governors is listed here: http://forum.xda-developers.com/showpost.php?p=23616564&postcount=4. Good way to understand this is if you learnt programming and you learnt the Stack/Queue ADTs in a programming language, it describes things better when looking at the descriptions in the link above.
Adjusting Synapse/Trickster would not get you anywhere to getting the best battery/best performance out of the phone. You will have to experiment and check which kernel is best with your phone, according to your SOC_PVS value. SOC_PVS value is how Qualcomm decides your processor's manufacturing "rank" and if you compare a low rank to a high rank, you will see that you can use less power to operate a high ranked chip compared to a low ranked counterpart. As most governors rely heavily on how the code is handled by the system, you should always go for the kernel that fits your system, and setting configurations depending on your system's likings. By following other people's configurations you risk sporadic reboots and incompatibilities, as not all phones are built the same way.
Things you should not touch if you are afraid of destroying your phone: Overvolting and Overclocking, as these may fry your device if you don't know what you are doing.
Any questions - click reply to this, or else I won't see it!
nicholaschum said:
I can give you a brief (easy) explanation with comparisons to try to get you to understand what a kernel is.
A kernel is your phone's driver (like a car) where it adjusts settings of the hardware and controls how each individual part interacts with each other.
There is a reason you take a car to get tuned up, and that is because a car can go berserk as there is no "maintaining force" - YOU or the person who tunes your car makes changes to the car to make sure it does not overheat, use less power per mile travelled, control how much windshield fluid is being released or how much torque force required to ensure the car does not snap XXXXXX when going at a speed of YYYYYY.
These options are beyond the manufacturer's decisions, and therefore when people flash a kernel you immediately trip KNOX (N9005). You can give your phone less power to process, more power to process (not recommended), speed up the CPU/limit the CPU, control governors on how the disk I/O (input/output) is being handled and/or control how much the phone will swap to it's virtual memory when it reaches no memory.
People think use a custom kernel! It saves you a ton of battery life!. This statement is partially wrong. You have to understand how a kernel reacts to your phone. Even though I know that lite kernels like Wootever's Custom N3 has the best battery life, this is because it has less tweaks and features that may boggle the user, and may allow for subsequent battery life extension compared to CivZ's SneakyKat or Imoseyon's LeanKernel. By inserting new tweaks into the kernel, you allow to have more "useful" features that may add to the "driver's knowledge" - Color tweaking, Fast charge over USB, CIFS support, all are extras that the kernel supports. To save power, developers remove the junk that the manufacturers added and added their own settings to make sure they get the result they would like, then they would share it to the public. However, people recommend custom kernels as they get more options when they flash it, as well as ridding of a lot of the stock settings that manufacturers love setting (default governors, lowest CPU frequency, etc)
CPU governors work by controlling how much speed is used at a given time, a good description of what each governor does is listed here: http://forum.xda-developers.com/showthread.php?t=1736168
I/O governors (simply speaking) control how files and requests are being handled by the system, a good description of what each governors is listed here: http://forum.xda-developers.com/showpost.php?p=23616564&postcount=4. Good way to understand this is if you learnt programming and you learnt the Stack/Queue ADTs in a programming language, it describes things better when looking at the descriptions in the link above.
Adjusting Synapse/Trickster would not get you anywhere to getting the best battery/best performance out of the phone. You will have to experiment and check which kernel is best with your phone, according to your SOC_PVS value. SOC_PVS value is how Qualcomm decides your processor's manufacturing "rank" and if you compare a low rank to a high rank, you will see that you can use less power to operate a high ranked chip compared to a low ranked counterpart. As most governors rely heavily on how the code is handled by the system, you should always go for the kernel that fits your system, and setting configurations depending on your system's likings. By following other people's configurations you risk sporadic reboots and incompatibilities, as not all phones are built the same way.
Things you should not touch if you are afraid of destroying your phone: Overvolting and Overclocking, as these may fry your device if you don't know what you are doing.
Any questions - click reply to this, or else I won't see it!
Click to expand...
Click to collapse
First of all thank u very much for the detailed response. That was exactly what I was looking for. I will get back to you after going through the awesome links you were posting with some more knowledge
One thing which came straight in my mind was how do I know if I have a low or high rank from the soc_pvs_value and where do I find it?
Thanks again!
4aces said:
First of all thank u very much for the detailed response. That was exactly what I was looking for. I will get back to you after going through the awesome links you were posting with some more knowledge
One thing which came straight in my mind was how do I know if I have a low or high rank from the soc_pvs_value and where do I find it?
Thanks again!
Click to expand...
Click to collapse
Anytime
You can either install Synapse (If your Kernel supports it, and click on the button under CPU), or check here:
Code:
/sys/devices/system/soc/soc0/soc_pvs
The higher your number, the better.
nicholaschum said:
Anytime
You can either install Synapse (If your Kernel supports it, and click on the button under CPU), or check here:
Code:
/sys/devices/system/soc/soc0/soc_pvs
The higher your number, the better.
Click to expand...
Click to collapse
I ran out of "thanks" so u get it tomorrow. But thanks again. One more thing:
How do I know if I have a high number/between which numbers does the value wary? My soc_pvs is 3.
4aces said:
I ran out of "thanks" so u get it tomorrow. But thanks again. One more thing:
How do I know if I have a high number/between which numbers does the value wary? My soc_pvs is 3.
Click to expand...
Click to collapse
You got a rather good number.
The lowest is 0, and the highest is 6. I have 2 but I don't undervolt so this is not an issue
nicholaschum said:
You got a rather good number.
The lowest is 0, and the highest is 6. I have 2 but I don't undervolt so this is not an issue
Click to expand...
Click to collapse
Can't thank u enough!!! Now I will be off to some reading and testing
nicholaschum said:
You got a rather good number.
The lowest is 0, and the highest is 6. I have 2 but I don't undervolt so this is not an issue
Click to expand...
Click to collapse
Aaand one more question.
What is the difference in tcp congestion control (cubic/reno) and what does it change?
4aces said:
Aaand one more question.
What is the difference in tcp congestion control (cubic/reno) and what does it change?
Click to expand...
Click to collapse
That seems more of a Trickster Mod specific tweak.
It is more of a network speed tweak which you can read here: http://en.m.wikipedia.org/wiki/TCP_congestion_avoidance_algorithm
In simple words, you have to understand what Network Congestion is, and how queues affect how much data is being transmitted. When too much data is being carried in a link or a node, the quality of service would deteriorate. To do Congestion control, it affects how much data is being transmitted through each node systematically. This is rather complicated to explain using simple terms as this is a mathematical formula which processes how much data is being transmitted.
Cubic is used by many default linux kernels. Like CPU governors, these are data transmission governors, and it is best if you use the one better for your TCP/IP connection (Carrier or Wifi)
nicholaschum said:
That seems more of a Trickster Mod specific tweak.
It is more of a network speed tweak which you can read here: http://en.m.wikipedia.org/wiki/TCP_congestion_avoidance_algorithm
In simple words, you have to understand what Network Congestion is, and how queues affect how much data is being transmitted. When too much data is being carried in a link or a node, the quality of service would deteriorate. To do Congestion control, it affects how much data is being transmitted through each node systematically. This is rather complicated to explain using simple terms as this is a mathematical formula which processes how much data is being transmitted.
Cubic is used by many default linux kernels. Like CPU governors, these are data transmission governors, and it is best if you use the one better for your TCP/IP connection (Carrier or Wifi)
Click to expand...
Click to collapse
Just read the answer in the link u posted. Stupid me.
Sorry for taking up your time.
nicholaschum said:
That seems more of a Trickster Mod specific tweak.
It is more of a network speed tweak which you can read here: http://en.m.wikipedia.org/wiki/TCP_congestion_avoidance_algorithm
In simple words, you have to understand what Network Congestion is, and how queues affect how much data is being transmitted. When too much data is being carried in a link or a node, the quality of service would deteriorate. To do Congestion control, it affects how much data is being transmitted through each node systematically. This is rather complicated to explain using simple terms as this is a mathematical formula which processes how much data is being transmitted.
Cubic is used by many default linux kernels. Like CPU governors, these are data transmission governors, and it is best if you use the one better for your TCP/IP connection (Carrier or Wifi)
Click to expand...
Click to collapse
I have another question. If I want to oc or uv is there any script I have to use or can I just apply/test right away?
4aces said:
I have another question. If I want to oc or uv is there any script I have to use or can I just apply/test right away?
Click to expand...
Click to collapse
Just use the main interface of either Trickster or Synapse. I use Synapse personally as my kernel provides the best interface on Synapse.
nicholaschum said:
Just use the main interface of either Trickster or Synapse. I use Synapse personally as my kernel provides the best interface on Synapse.
Click to expand...
Click to collapse
What I found out so far is that the device runs smoother on performance based governors with cfq or sio scheduler. The best results I had so far was on lean kernel and ael kernel. I'm using the last at the moment cause it has a lot of settings to play with
But it seems that I'm still miles away from finding the best settings.
4aces said:
What I found out so far is that my device reacts not good on performance based governors & schedulers. The best results I had so far was on lean kernel and ael kernel. I'm using the last at the moment cause it has a lot of settings to play with
But it seems that I'm still miles away from finding the best settings.
Click to expand...
Click to collapse
I could give you some recommendations that would work well decently with 2-3 PVS valued processors.
Interactive Governor
No OC, No UV.
I/O schedulers Internal: cfq 512kb
I/O schedulers External: cfq 512kb
Dynamic Fsync Enabled
PowerSuspend driver enabled
Mdnie enabled, 0.39%
FastCharge Enabled
GPU Governor: Simple Ondemand 450MHz
I use CivZ's SneakyKat but Wootever's Custom N3 has the best battery life. If you want features you should play with CivZ's, if you like 6h screen on then you should play with Wootever.
You don't have to follow these values, but I spent days restarting my phone finding the best "average" configuration for devices ranging in my state. I found that Intellidemand didn't do so well and Interactive prevented any sporadic reboots that I got while on Intellidemand. Also read aheads of above 512kb doesn't show much speed enhancements. Synapse is great as it tells you whether your boot is successful or not, and now all my boots get Completed.
Notice: Do not soft reboot when configuring Kernels, Kernels don't get loaded properly/doesn't get reset properly so use Full reboot when configuring
cpu lock
I tried gaming with different kernels and governors and encountered a strange issue. Especially in candy crush after playing for a while the cpu locks (sometimes on 14k sometimes 12k). Reboot fixes it but I'm still curious why it locks.
@nicholaschum any idea?
Btw. my favorite settings so far are intellidemand with deadline gr8 performance and battery life is OK.
4aces said:
I tried gaming with different kernels and governors and encountered a strange issue. Especially in candy crush after playing for a while the cpu locks (sometimes on 14k sometimes 12k). Reboot fixes it but I'm still curious why it locks.
@nicholaschum any idea?
Btw. my favorite settings so far are intellidemand with deadline gr8 performance and battery life is OK.
Click to expand...
Click to collapse
That's a bit weird, did you have powersaving turned on? But I assume it's off.
I think you should disable your kernel mod application in Application Manager and test it out, if it's a problem with Synapse/Trickster then one setting is a bit problematic.
nicholaschum said:
That's a bit weird, did you have powersaving turned on? But I assume it's off.
I think you should disable your kernel mod application in Application Manager and test it out, if it's a problem with Synapse/Trickster then one setting is a bit problematic.
Click to expand...
Click to collapse
Nope that's why it's strange. Even got it after clean flash without setting/installing any Kernel related apps.
Tested other games and they work fine so I deleted candy crush and so far no cpu lock. No idea why, that's why I was curious
4aces said:
Nope that's why it's strange. Even got it after clean flash without setting/installing any Kernel related apps.
Tested other games and they work fine so I deleted candy crush and so far no cpu lock. No idea why, that's why I was curious
Click to expand...
Click to collapse
I don't play Candy Crush so I wouldn't know..haha
nicholaschum said:
I don't play Candy Crush so I wouldn't know..haha
Click to expand...
Click to collapse
Lol. Me neither from now on... (my kids will be sad though) Still can't really belive the game caused it
Related
guys/gals,
have a question for those running custom kernels. would you mind sharing your kernel versions, setcpu settings, and benchmarks? some of us are interested to see the data. maybe the first person posting response could format their info so as people reply, they post their data in a similar structure so it is quick/easy to read/follow/compare.
thanks to anyone who responds.
You may get better battery life by letting the kernel dictate the speed the device runs at. The main function of setCPU should be to overclock the high end, not the low end.
This is just my opinion after not using setCPU, but it is a good assumption because the kernel already has these options built in.
Hi,
I've noticed a huge performance difference between kernels and the roms they're used with.
For example:
I was using AOKP and Franco kernel and got around 20000 antutu points, I've switched to Carbon Rom (because of the build in pie control) and Franco kernel and only get around 13000 points, that's a huge difference.
As a test I've installed Matr1x-kenel on Carbon and get around 21000 points.
I really like Franco-kernel and all the tweaks it offers but don't like the huge drop in benchmarks, I know benchmarks are not a real representation of actual performance but it's still a big difference.
This also occurs in Quadrant and Geekbench.
So my question is why does this happen?
Aren't most roms supposed to be compatible with most kernels?
Thank you in advance.
Best regards.
I can't answer your question as to why that happens (no doubt someone else will) but you seriously should just stop bothering with benchmarks and use your own eyes and experiences as a measure of how good a kernel/ROM is. I doubt you could find a kernel which made the phone visibly slow or that affected usability so I don't see what your concern is tbh.
Thanks for your answer.
Yeah, I read that a lot on XDA, don't trust benchmarks...I understand that but they must have some meaning.
I mean, if not why do they exist or do people bother using them?
To be honest I don't really notice any real performance difference between most kernels I've tested.
Best regards
some roms include many optimizations(like skia/dalvik, krait optimizations, and others), while some dont. its not thekernel thats crapping out on you, its the rom.
---------- Post added at 07:02 PM ---------- Previous post was at 06:58 PM ----------
Nigeldg said:
I can't answer your question as to why that happens (no doubt someone else will) butcomseriously should just stop bothering with benchmarks and use your own eyes and experiences as a measure of how good a kernel/ROM is. I doubt you could find a kernel which made the phone visibly slow or that affected usability so I don't see what your concern is tbh.
Click to expand...
Click to collapse
your eyes can be decieved.. they can see whats happening in the ui for example, but you can not see the complex calculations that are being performed or how your cpu is really performing. you can have a slow device whos ui is quick.
OK, I can understand that not all roms are equal but why does changing the kernel have such a seamingly big impact?
If a rom is bad to begin with it should stay that way no matter what kernel you use with it.
Offcourse what do I know, I'm not a developer so my knowledge on the subject is limited.
I'm just trying to understand what's going on...
Best regards
Pihkal said:
OK, I can understand that not all roms are equal but why does changing the kernel have such a seamingly big impact?
If a rom is bad to begin with it should stay that way no matter what kernel you use with it.
Offcourse what do I know, I'm not a developer so my knowledge on the subject is limited.
I'm just trying to understand what's going on...
Best regards
Click to expand...
Click to collapse
kernels vary too, and they impact greatly because they control just about everything in the phone, kinda like a brain. since the kernels themselves vary, one kernel might be better set up than another to deal with certain code from a certain rom. and then also, every phone reacts differently to each kernel(and roms to a point). thats why its recommended to try out different kernels, combos. only then you can find the perfect combo for you/your device. what works great for somebody, can be lousy for another.
OK, so if i understand correctly it boils down to this:
1. You can do benchmarks but don't base your opinion on just the benchmark scores.
2. Roms can vary greatly in optimizations and efficiency of coding.
3. Kernels can also vary greatly in optimizations and efficiency of coding.
4. There's no such thing as a "best for everyone rom/kernel combo".
5. Not all roms/kernels play equally nice with each other.
6. Play around with as many roms / kernels as possible and decide what works best for ME based on MY experience.
Thanks for the advice.
Best regards.
Its been well over a year since I ran any benchmark of any sort but I tested Franco and carbon because that's what I'm on and you mentioned low scores. I'm on Franco m3 with some tweaked settings and carbon nightly from 7-5. Antutu gave me 20636. I'm using stock CPU and GPU frequencies.
username8611 said:
Its been well over a year since I ran any benchmark of any sort but I tested Franco and carbon because that's what I'm on and you mentioned low scores. I'm on Franco m3 with some tweaked settings and carbon nightly from 7-5. Antutu gave me 20636. I'm using stock CPU and GPU frequencies.
Click to expand...
Click to collapse
Maybe the nightly Carbon rom is more optimized?
I'm on Carbon 1.7 Stable and used Franco nightly 162 to test with.
When I benchmark I try to be as consistent as possible ie same temperature, performance governor, airplane mode etc.
I even cooled my Nexus in the freezer for some minutes to eliminate thermal throttling (yeah I know, watchout for condensation) but still got the same low scores.
Best regards.
Pihkal said:
Maybe the nightly Carbon rom is more optimized?
I'm on Carbon 1.7 Stable and used Franco nightly 162 to test with.
When I benchmark I try to be as consistent as possible ie same temperature, performance governor, airplane mode etc.
I even cooled my Nexus in the freezer for some minutes to eliminate thermal throttling (yeah I know, watchout for condensation) but still got the same low scores.
Best regards.
Click to expand...
Click to collapse
It might be, I didn't do anything special. I left all my background apps running, didnt close anything in the recents, didn't cool the phone first. I just downloaded it and hit start. I use the interactive governor tweaked a bit, and I also tweaked the hotplug settings so it more readily onlines all 4 cores instead of waiting for some of the higher loads to trigger it.
username8611 said:
It might be, I didn't do anything special. I left all my background apps running, didnt close anything in the recents, didn't cool the phone first. I just downloaded it and hit start. I use the interactive governor tweaked a bit, and I also tweaked the hotplug settings so it more readily onlines all 4 cores instead of waiting for some of the higher loads to trigger it.
Click to expand...
Click to collapse
Well, I had to try it myself so I did a factory reset, cleared system,data and dalvik, installed latest carbon nightly.
With stock kernel I almost reached 21000 points, with franco I barely get 17000 points.
Very strange...
edit:
I stand corrected, did a second benchmark and am now getting 20880 points...
are you benchmarking with your cpu speed benchmarked set as highest and lowest cpu speed? you should. if you dont put the same cpu speed as highest and lowest then itll scale up and down. if it scales, you dont actually know what speed its testing and it gives you inconsistamt scores. you want the cpu speed to be the same throughout the test.
When I benchmark I set the governor to performance, this should keep the cpu running at maximum speed without scaling unless I'm mistaking...
Pihkal said:
When I benchmark I set the governor to performance, this should keep the cpu running at maximum speed without scaling unless I'm mistaking...
Click to expand...
Click to collapse
meh, performance is the worst for benchmarking. its such a deceiving name. try either ondemand or interactive. set your cpu speed to be the same high and low.
simms22 said:
meh, performance is the worst for benchmarking. its such a deceiving name. try either ondemand or interactive. set your cpu speed to be the same high and low.
Click to expand...
Click to collapse
Woow, that's a great tip, I now get 22003 points with Matr1x-kernel.
Pihkal said:
Woow, that's a great tip, I now get 22003 points with Matr1x-kernel.
Click to expand...
Click to collapse
better :highfive:
Hey guys,
I wanted to get everyone's feedback and experiences between the 3 kernels. I realize that every device behaves differently, but was curious about which ones people have tried, if they found any cool things about specific ones they really liked Or if you wanted to share your experience about the latest build.
Thanks!
Trinity and franco are about the same, but trinity>franco.
KTmanta is in a totally different league, it offers total customization and imo is the best kernel just because of that.
Franco and Trinity are all about performance where ktmanta is about battery optimizations and customizations.
I haven't used Franco or trinity in a while, I know they score higher in benchmarks if that means anything at all.
Sent from my SCH-I535 using xda app-developers app
I think everyone knows my preference, but they are all good kernels. Unfortunately this tablet is not on Franco's priority list and does not see much development. I dont believe it has a 4.3 compatible version yet and the last release has a serious bug that causes SoD for most people.
I like Trinity and KManta for different reasons (those stated above). If I need to squeeze out battery life, I go with KManta and tweak the settings accordingly. But for my day-to-day use, I like Trinity for its smoothness. Just my two cents
Awesome input guys! Real useful information.
How would you guys describe KTManta when just using the stock values? When you guys say "customization", do you guys mean the voltage settings and stuff like that? I've been flashing for years, but have never really understood how that worked. Which is funny, because I am an experienced PC overclocker. People say the concept is very similar. If KTManta's customization options were removed, would it be then comparable to Trinity? Or would it still be better without all the options?
Would you guys say Trinity still has decent battery life? Compared to KTManta at stock values?
Which one does Chrome work the best with?
Thanks!
Stock for stock Trinity is better because Morfic hardcodes overclock and undervolt values into the kernel and sets up all that stuff as his stock settings for the kernel. KTManta allows you to do those things and WAY more, but does not set them up as stock values because Ktoonsez prefers to keep the default settings for his kernel closer to the default settings of the stock AOSP kernel. So while Trinity may have -50mv undervolt to everything and a GPU overclock of 620MHz (I think that is the speed?), KTManta allows you to go +/- 200 mv to any frequency step for CPU or GPU that you feel like and also allows OC to 2.1GHz on CPU and 720MHz on the GPU if you want to, as well as RAM OC if you want to, and control of the scaling of every part of the chipset, again if you *want* to. But it doesnt set any custom stuff as default since everyone's device is unique and people want to do different things with it. That is why we have pre-made settings available from various users so that you can load custom values to try out without having to go through a bunch of experimentation yourself.
Hi,
Is the cloudy kernel the best for pure performance in terms of lag? Not looking for battery or other performance enhancements.
Is cloudy kernel 1.5 the latest ( just to make sure i have a backup kernel to re-install just on case)?
Is the tweak on hidden menu for HIGH TEMPERATURE still relevant with these kernels?
I am running with ondemand governor.
And just to make sure:
- to install a new kernel i just boot to recovery and flash the kernel without any wipes, right?
- i have xposed and some G2 tweaks running, i don't need to disable/reset or anything?
Thanks for your help! I am still learning.
Nico.
bloof said:
Hi,
Is the cloudy kernel the best for pure performance in terms of lag? Not looking for battery or other performance enhancements.
Is cloudy kernel 1.5 the latest ( just to make sure i have a backup kernel to re-install just on case)?
Is the tweak on hidden menu for HIGH TEMPERATURE still relevant with these kernels?
I am running with ondemand governor.
And just to make sure:
- to install a new kernel i just boot to recovery and flash the kernel without any wipes, right?
- i have xposed and some G2 tweaks running, i don't need to disable/reset or anything?
Thanks for your help! I am still learning.
Nico.
Click to expand...
Click to collapse
Hello Nico.
I'm hoping that I can assist you with this topic.
First off, regarding the kernel you have plenty of choices. There are two, however, that I'd recommend.
1. Dorimanx Kernel. That kernel is absolutely amazing with LOTS of tweaks, thermal protection, ad-blocker, allows overclocking to 2.8Ghz and much much more. I can't list all the features because they are so many. But there's one thing in particular - it's fast. Dorimanx has created a hybrid kernel from 3.4.xxx and 3.10.y source codes. This is my go-to kernel.
2. Bruce Kernel. It's a modified stock kernel with Bruce's own tweaks. It's fast, very battery friendly but lacks customisation. It also doesn't have thermal protection or any thermal throttling.
Now to your other questions:
Yes, Cloudy 1.5 should be the latest.
I wouldn't mess with the ROM thermal protection found in hidden menu. The gain in speed is most likely negligible but you make your phone more prone to heat damage.
Ondemand governor is great for smoothness, but you'll have a ton of options if you decide to use dorimanx. I use alucard because it's the sweet spot between amazing battery performance and smoothness.
You can install a new kernel without any wipes. Kernel doesn't interfere with ROM as such and you don't have to disable anything. A Kernel is basically what makes software and hardware work together.
I hope this helps!
vPro97 said:
Hello Nico.
I'm hoping that I can assist you with this topic.
First off, regarding the kernel you have plenty of choices. There are two, however, that I'd recommend.
1. Dorimanx Kernel. That kernel is absolutely amazing with LOTS of tweaks, thermal protection, ad-blocker, allows overclocking to 2.8Ghz and much much more. I can't list all the features because they are so many. But there's one thing in particular - it's fast. Dorimanx has created a hybrid kernel from 3.4.xxx and 3.10.y source codes. This is my go-to kernel.
Click to expand...
Click to collapse
Thanks a lot for your answers, these are exactly what I was looking for.
I just flashed Dorimanx, and without knowing too much on how to tweak it (more on that later), it is really smooth. I am keeping it!
vPro97 said:
I wouldn't mess with the ROM thermal protection found in hidden menu. The gain in speed is most likely negligible but you make your phone more prone to heat damage.
Click to expand...
Click to collapse
OK, great to know, it is so often repeated online that I used to have it. It is now off, absolutely no noticeable difference!
vPro97 said:
You can install a new kernel without any wipes. Kernel doesn't interfere with ROM as such and you don't have to disable anything. A Kernel is basically what makes software and hardware work together.
I hope this helps!
Click to expand...
Click to collapse
Thanks. Flashed perfectly, twice (I had trickster mod on and wasn't sure what it reset at boot, so uninstalled it and re-installed Dorimanx.)
Got 1040/2900 on geekbench even if that is not really what I care about. I had 950/2750 before, not that much noticeable difference in %.
vPro97 said:
Ondemand governor is great for smoothness, but you'll have a ton of options if you decide to use dorimanx. I use alucard because it's the sweet spot between amazing battery performance and smoothness.
Click to expand...
Click to collapse
OK, we're onto kernel tweaks , I have a few questions:
I discovered that I had STweaks installed, so let's use that.
1) Apart from governor alucard, what other settings should I apply? You mention thermal controls. I expect the defaults of STweaks are OK? If not, what should I do?
2) I found a GPU governor, should I do something there to have better performance?
3) my real goal is to achieve super smoothness when interacting with the phone, I don't play high CPU 3D games or anything like that. I want the phone to react instantly when I press somewhere or open something or press home or recent apps. Any advice? I modified touch boost frequency...
4) if I "reset settings to default" in STweaks, will it reset to Dorimanx' installed default as I just installed the kernel?
5) so that I don't bother anyone anymore, is there a manual about all these tweaks in Dorimanx/STweaks?
Thanks again so much!
Hey bud, I dont know if u found out the answers to these questions but I can share my information with u as I see nobody answered it
1)
2)
3) I'll tell u the best settings for smoothness but also with great battery life All questions ll be answered in one answer :
Make governers Alucard
Touchboost:1.9
Powesave Switch: Performance mode
Power Efficent Worqueues : Unticked
Cpu Tweaks:ticked
Max Cpu 0,1,2,3 freq:2572800
MAx screen off freq :Max Allowed
________________________-
Alucard Hotplug
Hotplug always active
2 cores boost
4 cores max online
2 cores min cpu online
___________________
gpu min 100
max 533
__________________
I/O read ahead 2048
row row
____________________
cron all on
___________________
Logcat Logger always disabled
_____________________
And from developer settings of ur ROM, make window animation, transition animation and animation duration scale 0.5x
If u re not dependant on xposed module, then use ARTruntime(faster)
4) Yes, all settings ll be restored to original Dorimanx settings.
5) I havent seen any yet
This is all I can say, let me know about results
Darius129 said:
Hey bud, I dont know if u found out the answers to these questions but I can share my information with u as I see nobody answered it
1)
2)
3) I'll tell u the best settings for smoothness but also with great battery life All questions ll be answered in one answer :
Make governers Alucard
Touchboost:1.9
Powesave Switch: Performance mode
Power Efficent Worqueues : Unticked
Cpu Tweaks:ticked
Max Cpu 0,1,2,3 freq:2572800
MAx screen off freq :Max Allowed
________________________-
Alucard Hotplug
Hotplug always active
2 cores boost
4 cores max online
2 cores min cpu online
___________________
gpu min 100
max 533
__________________
I/O read ahead 2048
row row
____________________
cron all on
___________________
Logcat Logger always disabled
_____________________
And from developer settings of ur ROM, make window animation, transition animation and animation duration scale 0.5x
If u re not dependant on xposed module, then use ARTruntime(faster)
4) Yes, all settings ll be restored to original Dorimanx settings.
5) I havent seen any yet
This is all I can say, let me know about results
Click to expand...
Click to collapse
Hey there. Thanks a lot for your answers, despite the thread being so old.
I actually learned a lot since i posted that
I use 2x intelliactive, 2x alucard, alicard HP, max freq 2.3, 2.3, 1.9, 1.9, gpu 100-533, i/0 read 1024, dirty tatios 5%/10%
Your settings look interesting, you sure you get great battery life? With 2 cores min? I am going to try
No mate, I said that's settings for u, u said u don't care about battery, so I tried to give u the best settings I can come up with for performance, I myself use 3 cores max, all 2,3 ghz 1 core boost, Alucard on-demand Alucard. 1024. 100 320 GPU. It's pretty smooth with art. But if I wouldn't care about battery, I would do the settings I told u. Hehe
Darius129 said:
No mate, I said that's settings for u, u said u don't care about battery, so I tried to give u the best settings I can come up with for performance, I myself use 3 cores max, all 2,3 ghz 1 core boost, Alucard on-demand Alucard. 1024. 100 320 GPU. It's pretty smooth with art. But if I wouldn't care about battery, I would do the settings I told u. Hehe
Click to expand...
Click to collapse
no worries!
I learned to care more about battery I realized that it is really smooth anyway. I have a lot of SOT daily (movies, etc) and realized that using performance settings just drains too quickly and is not needed.
I do put animations to x0.5 (transition animation to OFF).
What I am really struggling with is home redraws... A bit better now, but they used to be 1000x times a day.
I would run with ART but it takes a lot more memory, and with my 16 GB I don't have enough memory left when running ART.
Buddy, I am on 16 too. I had 8.5 hours sot with art and cloudy 2.1!! I use nova launcher and I am happier with it can give it a try
Darius129 said:
Buddy, I am on 16 too. I had 8.5 hours sot with art and cloudy 2.1!! I use nova launcher and I am happier with it can give it a try
Click to expand...
Click to collapse
I have a few very large apps (navigon, games,...) they take 2-3 GB.
I al so have movies, remaining is only 1.3 GB.
If i want to backup ROM i need to delete obb files, etc. With ART i will have nothing left!
Tried niva but didn't like it. Will try apex again maybe, but i really like the look of G3 home.
Hmm, I see. I didnt know that internal memory and has a thing to do ART, I just made it ART and everything was ok. Launcher is a matter of taste I guess. For lg launcher, I read that there are some hidden settings to lock it in RAM, so that it doesnt redraw that often, maybe u can take a look for that. Hope to share more information for better experience with our phones
@bloof I forgot to tell, I also like how g3 theme looks, and I use a g3 theme with my nova launcher. If pm me ur gmail, can send u my screenshots
Hello XDA members,
I have looked around on the internet and XDA and I couldn't find a satisfactory answer to my question so here I am.
1. What is the function of Kernel?
2. What is the advantage of custom kernel over stock?
3. Is Kernel something that I just install and forget? or do I have to make edits. If edits then what sorts?
I am using latest TWRP, Pixel Exp with magisk. About to try the xposed beta. Thought get more in depth to get max out of my device.
Thank you all in advance.
1. A kernel is the "core" of the OS, a piece of code that acts as a mediator between the hardware and software in your phone. It decides how your apps can use the hardware, it manages your CPU's and GPU's clock speeds (lowering them in low usage and raising for resource - intensive apps) and manages the voltages your components operate on. It also reserves RAM space for apps, decides on which CPU cores an app will run, etc. Everything you do, all input sensors, everything your apps do, and all your phone's output information goes through the kernel.
2. Custom kernels are customised kernels, tweaked to the liking of whoever created them. The benefit of custom kernels is that they are usually better optimised, they handle and distribute your phone's resources better than the stock kernel, which can give you better battery life and performance. It can also be changed to allow overclocking, meaning higher CPU or GPU clock speeds. Paranoid Android roms use a kernel that is extremely well-optimised for Qualcomm's chipsets, probably the best kernel for our device.
3. As for edits, some kernels are made to be better optimised for your device, providing a performance/battery life improvements out-of-the-box. Most kernels come with an app, giving the user control over how their kernel behaves by allowing manual tweaks, where you can raise/lower CPU and GPU clock speeds yourself. They also add some functions, things you couldn't change on a stock kernel, and some add extra CPU governors to choose from. Governors are behaviour models for your phone's CPU, they define how your CPU acts, how fast it raises clock speed under load, and how fast it lowers it back when high processing power is no longer needed. For example "performance" governor will always keep all cores at a maximum clock speed (which draws loads of energy), while "powersave" will reduce clock speeds to a minimum. Custom kernels usually add custom made governors that aim for performance, battery life, or balance of the two.
There are many more tweaks to the kernel, like memory-management, which tells the kernel when to kill bacground apps, and how many apps can remain open in background (in RAM) before getting killed.
As for if you need to change stuff in the kernel, most of the time they come preset to the values the kernel creator thinks is best, so probably no, but you sure can benefit from researching the tweaks and creating custom profiles if you need to squeeze maximum battery life from your phone when your battery is almost dead, or you want to play some intensive games and need every bit of power your phone can give you.
In my opinion, Moto G5 plus has a pretty decently tweaked kernel, but since it heats up very little and has great battery life it has some overclocking potential. It should probably be able to handle a boost to 2.2GHz like on Snapdragon 626, which seems exactly the same as 625 just with a higher clock speed.
bazinga137 said:
1. A kernel is the "core" of the OS, a piece of code that acts as a mediator between the hardware and software in your phone. It decides how your apps can use the hardware, it manages your CPU's and GPU's clock speeds (lowering them in low usage and raising for resource - intensive apps) and manages the voltages your components operate on. It also reserves RAM space for apps, decides on which CPU cores an app will run, etc. Everything you do, all input sensors, everything your apps do, and all your phone's output information goes through the kernel.
2. Custom kernels are customised kernels, tweaked to the liking of whoever created them. The benefit of custom kernels is that they are usually better optimised, they handle and distribute your phone's resources better than the stock kernel, which can give you better battery life and performance. It can also be changed to allow overclocking, meaning higher CPU or GPU clock speeds. Paranoid Android roms use a kernel that is extremely well-optimised for Qualcomm's chipsets, probably the best kernel for our device.
3. As for edits, some kernels are made to be better optimised for your device, providing a performance/battery life improvements out-of-the-box. Most kernels come with an app, giving the user control over how their kernel behaves by allowing manual tweaks, where you can raise/lower CPU and GPU clock speeds yourself. They also add some functions, things you couldn't change on a stock kernel, and some add extra CPU governors to choose from. Governors are behaviour models for your phone's CPU, they define how your CPU acts, how fast it raises clock speed under load, and how fast it lowers it back when high processing power is no longer needed. For example "performance" governor will always keep all cores at a maximum clock speed (which draws loads of energy), while "powersave" will reduce clock speeds to a minimum. Custom kernels usually add custom made governors that aim for performance, battery life, or balance of the two.
There are many more tweaks to the kernel, like memory-management, which tells the kernel when to kill bacground apps, and how many apps can remain open in background (in RAM) before getting killed.
As for if you need to change stuff in the kernel, most of the time they come preset to the values the kernel creator thinks is best, so probably no, but you sure can benefit from researching the tweaks and creating custom profiles if you need to squeeze maximum battery life from your phone when your battery is almost dead, or you want to play some intensive games and need every bit of power your phone can give you.
In my opinion, Moto G5 plus has a pretty decently tweaked kernel, but since it heats up very little and has great battery life it has some overclocking potential. It should probably be able to handle a boost to 2.2GHz like on Snapdragon 626, which seems exactly the same as 625 just with a higher clock speed.
Click to expand...
Click to collapse
Wow.
Thanks for such a detailed reply.
I will download alize and see where it takes me
Thanks again.