Develop Bugs

CFS vs. BFS kernels

I've been looking around at new kernels (the one I have now is murdering my battery).
What is the difference in CFS and BFS kernels?
I know that it has to do with the scheduler, but what are the pros and cons of each in terms of the Evo?
Thanks, guys.

Your best bet is to try them out. It can be subjective, depend on usage, and differant bugs depending on release. This compounds individual bias as few can say they've tried them all.
Sent from my PC36100 using XDA App

SharkUW said:
Your best bet is to try them out. It can be subjective, depend on usage, and differant bugs depending on release. This compounds individual bias as few can say they've tried them all.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
+1
You've got try them out for yourself. Not all EVOs are created equal.
Sent from my PC36100 using XDA App

After reading this (mainly the conclusion), I went with BFS.
http://www.cs.unm.edu/~eschulte/data/bfs-v-cfs_groves-knockel-schulte.pdf

I wasn't sure if there was a consensus about which is better. That's why I was asking.
Off to try new kernels...
Thanks, guys.

I just saw your ISP. Clemson?
Get ready for a beating on 10/23 when you play GT.
Good luck with the kernels.

ckombo said:
I just saw your ISP. Clemson?
Get ready for a beating on 10/23 when you play GT.
Good luck with the kernels.
Click to expand...
Click to collapse
Maryland gonna whoop both y'all!!!
lol sike
bfs... performance it better. still a lil buggy on the phones but works good for me. as the .34 kernal becomes more developed it should get much better

Yeah, yeah. Spot the * ball.
Haha.
Football season is here, boys. Get ready.
Thanks Terp and Wreck.

Amen to trying them out. I have been largely happy with the CM6 stock kernel but a 3D game (Dungeon Defenders) was getting a little choppy; I was feeling saucy the other night and decided to experiement with kernels with the express purpose of improving 3D game play. After reading around this site and others, I was sure I would end up using a BFS kernel of some sort as that - at least according to my tiny brain - seemed ideal for a single, resource intense process. I flashed the SnapTurbo 7.6 BFS and it actually made the game worse! The Evo was otherwise quite snappy. I flashed the ST 7.6 CFS thereafter and actually enjoyed the marginal benefit in the game I had hoped for.
So, again, just try it! Much luck

http://forum.xda-developers.com/showthread.php?t=894880 You're welcome.
Personally, I prefer CFS, works for me quite nicely.

I find the phone feels a little snappier on a BFS kernel, and tends to score higher in the benchmarks using the same CPU frequencies/voltages and governor...but the CFS kernel usually has better battery life and seems to be more stable.

Cfs or bfs kernel
ckombo said:
I just saw your ISP. Clemson?
Get ready for a beating on 10/23 when you play GT.
Good luck with the kernels.
Click to expand...
Click to collapse
I think CFS is a far more stable version than the BFS and its quite well refined, Iam using Francos 19.2 kernel

[Q] Opinions: best sense rom/kernels for battery?

hey guys im sure you get these a lot.
anyway, Ive been running CM6 for awhile now but found out my hometown has 4G coverage now and where i go to school will get 4G in about a month, so I have to make the switch to sense for obvious reasons. Im not huge on performance because frankly i'm not looking to blow minds with benchmarks on quadrant, the phone is fast as **** no matter what so im looking for the best battery life. a must for me is that they keep the theme relatively stock as well, some people arent graphically inclined no offense...
also looking for a good stable kernel with good battery life.
currently running burnt droid with baked kernel #6. heard fresh was good on battery but i think his site, geekfor.me, is down, can someone confirm this?
thanks a lot for your opinions

I don't have 4G here, so I can't say for sure how much 4G affects the battery on this rom, however I've been using Ava-FroyoV10. I do know that the 4G works. I have used it once while I was traveling through a few towns that did have it.
Besides 4G, I do use my phone pretty averagely. In my opinion anyway. I'm usually constantly texting, checking up on eBay using their app, having it plugged into the radio in my car for music, or reading up on engadget. Using Wifi or 3G were applicable. My phone lasts from, about... 8:30AM to around 9 or 10PM. I get a good day's use out of it with Ava-FroyoV10.
I don't use any kernel. I did used to have Netarchy's, however the Ava's stock kernel feels better with the phone. You do not get to adjust your CPU Voltage with the stock kernel.
Your best bet is to surf the Roms and Kernels. Find which one you like best, and stick with it.

Myns warm works pretty well for me with the stock kernel.
plus its a damn good looking rom

mic.mayorga said:
hey guys im sure you get these a lot.
anyway, Ive been running CM6 for awhile now but found out my hometown has 4G coverage now and where i go to school will get 4G in about a month, so I have to make the switch to sense for obvious reasons. Im not huge on performance because frankly i'm not looking to blow minds with benchmarks on quadrant, the phone is fast as **** no matter what so im looking for the best battery life. a must for me is that they keep the theme relatively stock as well, some people arent graphically inclined no offense...
also looking for a good stable kernel with good battery life.
currently running burnt droid with baked kernel #6. heard fresh was good on battery but i think his site, geekfor.me, is down, can someone confirm this?
thanks a lot for your opinions
Click to expand...
Click to collapse
Try myns rls 4 with its stock kernel or net 4.2 cfs bfs move havs smartass they both work great for me and a lot others
Sent from my PC36100 using XDA App

terrel_b said:
Myns warm works pretty well for me with the stock kernel.
plus its a damn good looking rom
Click to expand...
Click to collapse
Lol I didn't see your post +1
Sent from my PC36100 using XDA App

I too am looking for suggestions on a good rom to use to have decent battery life. Is Myn the only rom? What other kernels have decent battery life?

+1 I only get like 12hours max when i hardly use my phone... battery is going downhill

Best rom with battery life

Hey everyone I just rooted my girlfriends phone and I was wondering. What is the best rom to have with great battery life? I tried a team nocturnal rom and cyanogenmod but they're not that good. And with cyanogenmod, I hear the phone vibrate during calls. It's a bit annoying.
Anyone have any suggestions?
Sent from my DROIDX using XDA App

Battery Life
I am getting 24 + hours with Bliss & Chop Suey Kernal OR Bliss & Freedom kernal

sefirosu0522 said:
Hey everyone I just rooted my girlfriends phone and I was wondering. What is the best rom to have with great battery life? I tried a team nocturnal rom and cyanogenmod but they're not that good. And with cyanogenmod, I hear the phone vibrate during calls. It's a bit annoying.
Anyone have any suggestions?
Sent from my DROIDX using XDA App
Click to expand...
Click to collapse
This is best suited for the Questions and Answers section. This is Development and I can see how you thought this was the right place but it is not. This is for roms, mod, and developmental threads. Please post in the right section next time.
Now to your question please keep in mind that what works for me might not work for you as every evo is different. The best way to know is for you to try different rom and kernel combinations till you find what you are looking for.
Good luck

miui with tiamat or save zen. I never use 4g so I don't care that it's missing. I like sense a lot but miui looks/feels just as good if not better. it's a seriously great ROM! Fast, stable, easily customizable and themeable. And battery life is the best i've had since running myn 2.2. Try it out.
Sent from my PC36100 using XDA App

survey saaays...
dudewithnofood said:
miui with tiamat or save zen. I never use 4g so I don't care that it's missing. I like sense a lot but miui looks/feels just as good if not better. it's a seriously great ROM! Fast, stable, easily customizable and themeable. And battery life is the best i've had since running myn 2.2. Try it out.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
of course MIUI gets the best battery life.
nothing on it works, so your phone just sits there as a paper weight, and that hardly takes any battery to do.

depends on usage...
I sit most of the day without touching my phone. with synergy rls1 Id go 2-2 and a half days between charges if I was home and almost never touched my phone, but Id get 3-4 hours(if lucky) if I had to use it.
With CyanogenMod 7.1 Im seeing 13hours of life if I dont touch it, but Im getting more like 7 of use
if youd like more help PM me

sefirosu0522 said:
Hey everyone I just rooted my girlfriends phone and I was wondering. What is the best rom to have with great battery life? I tried a team nocturnal rom and cyanogenmod but they're not that good. And with cyanogenmod, I hear the phone vibrate during calls. It's a bit annoying.
Anyone have any suggestions?
Sent from my DROIDX using XDA App
Click to expand...
Click to collapse
HERE This has alot of great names behind it, have not came across anything yet, battery is very good though! Kernel is tweaked so you can overclock it if needed.

Tekn010933 said:
HERE This has alot of great names behind it, have not came across anything yet, battery is very good though! Kernel is tweaked so you can overclock it if needed.
Click to expand...
Click to collapse
Thanks. I'll be checking this out in a little while.
Sorry I posted in the wrong section.

Thread moved to Q&A.

Finally someone with a similar experiance to mines. Im also using synergy and if im not using it the battery life is excellent. I have installed juice defender and also freedom 0.9 agreesive kernel. I use battery monitor widget to see what kind of drain im actually having. I check the history and using all of the above and if phone is just sitting on the table my avearge reading is 28mah.
If i start using apps and doing stuff on my phone though im lucky if i get 4 hours of use on it also i dont use 4g at all ever so thats not a factor. I just wish i knew why the drain is so high when using it. Ive also done hte battery recalibration so thats not the problem.

Decks can be pretty good and/or runs overclocked pretty well and i still push about 20 hours out of it.

ben.nesheim said:
Decks can be pretty good and/or runs overclocked pretty well and i still push about 20 hours out of it.
Click to expand...
Click to collapse
I've never overclocked a phone though. Don't know how comfortable I'd feel about doing it, especially not knowing how to get the phone back to stock.

sefirosu0522 said:
Hey everyone I just rooted my girlfriends phone and I was wondering. What is the best rom to have with great battery life? I tried a team nocturnal rom and cyanogenmod but they're not that good. And with cyanogenmod, I hear the phone vibrate during calls. It's a bit annoying.
Anyone have any suggestions?
Sent from my DROIDX using XDA App
Click to expand...
Click to collapse
I have tried almost every rom for the evo and I look for stability, internal memory, battery life, and speed. For a gingerbread rom, I keep coming back to KingsROM Alliance SENSE 2.1+ 3.0 HybriD 3D " The BREED " with ChopSuey v9.1 kernel for good battery life. That is my daily rom. For Froyo rom, I use Koni ELITE Series III with Netarchy 4.3.2-havs-more-universal and I get amazing battery life.

[Q] Absolute Best Battery Life (ROM & Kernal + mods)

I'll be joining in a protest soon. Since having access to charge my Evo as often I usually do, I need to change ROM's I think.
I currently run MIUI 1.9.16 with Tiamat 4.0.6 SBC, no mods.
Can anyone suggest ROM's and Kernals that will grant me the best battery life as well as what mods and scripts I should run?
AOSP or Sense, doesn't matter with me.
Thank you for any advice that is given.
^_^

The best battery life I have gotten was from MikFroYo 4.4 with Netarchy-Toastmod-4.3.4
Edit: The easiest way to extend battery life, is to turn off all radios not in use (GPS/4G/Mobile Networks/Bluetooth), and turn your brightness down as far as you can.

in my opinion it seems that froyo (2.2) roms get better battery life, also running SBC is always better.. and the things said above obviously

bcarter2000 said:
The best battery life I have gotten was from MikFroYo 4.4 with Netarchy-Toastmod-4.3.4
Edit: The easiest way to extend battery life, is to turn off all radios not in use (GPS/4G/Mobile Networks/Bluetooth), and turn your brightness down as far as you can.
Click to expand...
Click to collapse
I already do what you mentioned in the bottom part. I'll look into MikFroYo later today. Thanks. It'll take time getting used to Sense, I've been on MIUI since May, two months after I rooted.

How bad is your battery life?

theidlemonk said:
How bad is your battery life?
Click to expand...
Click to collapse
Right now, slightly below average with the Data and everything on. I've been to busy to calibrate it and do the steps to increase battery life. Organizing a protest, funding, taking care of the house, following news articles (not a fast reader and I need glasses), etc... T_T

I need to do the whole calibration ting tomorrow morning. Mine's been a real slug with battery life lately.
The best battery life I ever had was with Koni III and Netarchy SBC Havs more

Methos013 said:
Right now, slightly below average with the Data and everything on. I've been to busy to calibrate it and do the steps to increase battery life. Organizing a protest, funding, taking care of the house, following news articles (not a fast reader and I need glasses), etc... T_T
Click to expand...
Click to collapse
Off topic but what r u protesting about
free the dirk

Papa Smurf151 said:
Off topic but what r u protesting about
free the dirk
Click to expand...
Click to collapse
Occupy Youngstown. One of the cities following in suite with Occupy Wall St.

My best was from Warm 2.2 with sbc htc#15, also the toastmod with sbc was good too.
Gotta get a 3500 batt for great life. I got 3 days at a charge with above combo.
Sent from my PC36100 using XDA App

Awesome. Thanks for being part of the movement. !!!!!!!!!!!
Sent from my PC36100 using xda premium

Best for me is Mikg 2.55 I get good day to day half but I don't be on my phone crazy style tho
Sent from my PC36100

I'm currently using Swagged Out rom, With Lithids Freedom Aggressive kernel which is undervolted by -175, and V6 SuperCharger script! Its an amazingly smooth stock rom. Kernel wise its the best battery life I've ever gotten on my EVO. And as to V6 SuperCharger I've used it on every Rom I've flashed its awesome. Their are links to eveything in my signature.

I'm a flash-a-holic so i wouldn't really know wat the best combo is but i just flashed the new snowy Rom so going to give it a couple days with the aggressive freedom 9 kernel (128/768 interactivex) and see how it goes...
Sent from my PC36100 using XDA Premium App

[Q][kernal] What's a good one?

I have stock rooted, I love the phone and didn't want to flash a ROM so soon but I was wondering, what's a good kernal thats better than stock, that increases battery while not affecting the speed negatively, I currently get about 10-12hrs on my battery as is
Search doesn't work that well for me on mobile, so sorry if previously asked although I did scan the threads but just wanted to see how you guys are doing with your current kernals
Swyped from my Sgs2 T989

Try tdj's dark side kernel. Very smooth and great battery life. Plus you can overclock and under volt.
Sent from my SGH-T989 using xda premium

GreggoryD502 said:
Try tdj's dark side kernel. Very smooth and great battery life. Plus you can overclock and under volt.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Thank you for the info but when you say great battery life do you mean better than stock?
Swyped from my Sgs2 T989

relldroid said:
I have stock rooted, I love the phone and didn't want to flash a ROM so soon but I was wondering, what's a good kernal thats better than stock, that increases battery while not affecting the speed negatively, I currently get about 10-12hrs on my battery as is
Search doesn't work that well for me on mobile, so sorry if previously asked although I did scan the threads but just wanted to see how you guys are doing with your current kernals
Swyped from my Sgs2 T989
Click to expand...
Click to collapse
i think there's only about 4-5 options out there... but each phone's hardware is different so each kernel will be different.
For example, my phone works really well with faux and darkside, but i get quite a bit of drain from eugene's kernel (yes I do configure my clock speed and voltages) people say synergy has great battery life and is smooth, however, my phone says different. it lagged more than the 3 mentioned and battery life was equivalent. There is also the bullet kernel... i haven't played with that... not sure if im missing any other kernels... but yeah i suggest giving the first three a try first as they are currently being supported.
reminder, you should let your phone go through at least 2 charges before comparing kernel's battery life etc... and with our phone.. thats 2 days lol

Pretty much any of the kernels on the first page will give you better than stock battery life. Faux, synergy and the dark side kernel are the three most popular kernels amongst Devs so that must mean something.

relldroid said:
Thank you for the info but when you say great battery life do you mean better than stock?
Swyped from my Sgs2 T989
Click to expand...
Click to collapse
yes it is better than stock, most of us actually UNDERclock because these devs are amazing lol

Thank you all for the reply, I've got some experimenting to do!
Swyped from my Sgs2 T989

relldroid said:
Thank you for the info but when you say great battery life do you mean better than stock?
Swyped from my Sgs2 T989
Click to expand...
Click to collapse
To be honest, i only ran stock for a few hours. Ive been running a custom rom since day 1. But I believe it would be better then stock because TDJ has undervolted the kernel slightly.

I'm using the darkside right now and so far so good
Swyped from my Sgs2 T989

I've tried most of the popular kernels and the best battery life I've observed has been with Synergy... hands down gives me the best standby battery life.
But what I've noticed that gives me even better battery life is just turning off mobile data when I don't need it (in class, during meetings)... which also turns off the background syncing.
But in the end, it's all up to you how crazy you want to get with your battery management.