Yea sorry about that quote, and one last question does the stock built in power saving mode on LP still work with this kernel? And some reason my phone still has that 4th core shutdown issue, or it sitting at max. any suggestions?
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[ZEN-KERNEL] 3.10-zen21 "Cheap and Easy" (May 20)
- Thread starter bbedward
- Start date
@bbedward I know you're busy guy bro and I don't like bugging and I don't like the people on here that bug but I miss your kennel. Is this safe to run with the newest stock google 5.1.1 image? I know your kind of waiting for Android marshmallow hopefully you will release something then
Yea new job and summer time have been quite busy for me.
I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.
I will be getting the Nexus 6P however
, but will probably take til November to ship.
Yea new job and summer time have been quite busy for me.
I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.
I will be getting the Nexus 6P however
Excellent! Still the only kernel I use.
It's all just an illusion
hopefully you'll still be supporting the nexus 6 too, lol. absolutely love your kernel!Yea new job and summer time have been quite busy for me.
I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.
I will be getting the Nexus 6P however
Yea new job and summer time have been quite busy for me.
I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.
I will be getting the Nexus 6P however
i really hope you'll be able to optimize the kernel for 6.0. I missed zen on my n6
@bbedward - Is development on zen kernel dead? I was holding out hope for a 6.0 release
@bbedward I've been using your kernel with AICP rom for several weeks now, I'm really satisfied with it. But with the build 20151015 + Zen Overclock Enable v2 my Nexus seems to bootloop !
The wifi access point does not seem to work with your kernel too, any idea ?
The wifi access point does not seem to work with your kernel too, any idea ?
@bbedward - Is development on zen kernel dead? I was holding out hope for a 6.0 release
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.
I'd call it dead here, but many others are using BFS and such still - like hellscore.
I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade
The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.
I'd call it dead here, but many others are using BFS and such still - like hellscore.
I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade
The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.
Rut roh! I'm on F2FS.. looks like no M for me.
wrongway213
Recognized Developer / Recognized Contributor / Re
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.
I'd call it dead here, but many others are using BFS and such still - like hellscore.
I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade
The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.
You'll be missed on the 6 man! I suppose I'll hold NE OH down.. if only I had a game changing kernel to drop
Thanks for all that you brought to development on this device -to this day i still run Zen-decision and nothing else with Elite Kernel and it is awesome.
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.
I'd call it dead here, but many others are using BFS and such still - like hellscore.
I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade
The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.
Awesome man
Just curious, how well will bfs play with all of the added hmp stuff required for the big.little cluster management? It seems like most of that may be deeply reliant on CFS from what I've seen, so I would assume it would have to be added into bfs somehow as well? Then again, you are a pro, so you probably can make it work somehow.
---------- Post added at 11:34 PM ---------- Previous post was at 11:32 PM ----------
You'll be missed on the 6 man! I suppose I'll hold NE OH down.. if only I had a game changing kernel to drop
Thanks for all that you brought to development on this device -to this day i still run Zen-decision and nothing else with Elite Kernel and it is awesome.
NE Ohio will not be missed
you Ohioans have already taken over xda.
Awesome man
Just curious, how well will bfs play with all of the added hmp stuff required for the big.little cluster management? It seems like most of that may be deeply reliant on CFS from what I've seen, so I would assume it would have to be added into bfs somehow as well? Then again, you are a pro, so you probably can make it work somehow.
---------- Post added at 11:34 PM ---------- Previous post was at 11:32 PM ----------
NE Ohio will not be missed
Yea the stuff for hmp/big.LITTLE is pretty deep in the CPU scheduler. It's just a matter of implementing all the functionality to BFS. I can do it though
Sad there won't be a marshmallow release for the N6 I ran hellscore for a bit and liked it, but flar's DT2W gestures aren't included in the kernel, and hell's has said repeatedly he won't add them. Unfortunately that's a deal breaker for me, as they work waaaayyyy better than the stock google implementation.
No plans to update to the N6P right now, but if I do I know right where I'm going for my kernel
I ran hellscore for a bit and liked it, but flar's DT2W gestures aren't included in the kernel, and hell's has said repeatedly he won't add them. Unfortunately that's a deal breaker for me, as they work waaaayyyy better than the stock google implementation. No plans to update to the N6P right now, but if I do I know right where I'm going for my kernel
Can some one give me pure stock kernel of 5.1.1 I am using CRDroid. Will the stock kernel work with it.
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84Pushbullet: https://www.pushbullet.com/channel?tag=zen
But you say I'm just a friend
Project Background
First of all. I like the nexus 6. Actually, I really really like the nexus 6. I think the device from factory performs quite marvelously, especially since the 5.1 update. Because of this, I am actually pretty content with running the stock kernel. "But BB...What about INTelligentSuperBOOSTXX5MillionPOINT5MegaBlast?!?!?!? Can you add this!?". While I appreciate all the great and free work that several great individuals do for the community. I personally don't see the need to alter any of these MSM/Board drivers a whole lot - not on these latest generation of devices. Things run pretty well I think.
"Why don't you just run the stock kernel then you sick low-life waste of space?"
Because, I still think improvements can be made.
I think there's a lot of good intentions out there to make improvements in the kernel-space, BUT:
I've observed a variety of things that were prevalent a couple of years ago and that are still prevalent today. (1) A lot of small things are changed - and advertised as a huge improvement, (2) some tunables are adjusted and advertised as a huge change/improvement but end up being a regression because they were never tested, or (3) some code is merged that causes regressions and it turns out that self-inflicted bugs are being chased around.
Zen is an attempt at improving the stock kernel. That's it.
Project Summary
The Zen kernel has always been oriented at improving the experience fordesktopmobile users as much as possible. This iteration of the series is no different. The goal is simple: Improve the experience.
BFS CPU Scheduler
BFS is an alternative CPU scheduler to the stock kernel's CFS. BFS features a simple single-runqueue O earliest virtual deadline first design. There is no need for excessive balancing to achieve fariness on multiple runqueues - fairness is ensured by deadlines.
BFS is tweaked towards human perception. It is not a real-time scheduler (like the SCHED_DEADLINE policy/scheduling in 3.14+) nor does it use runtimes+red/black trees to figure out fairness. It uses deadlines with the 6ms rr_interval based on the fact that humans cannot detect jitters until >= 7ms.
Anyway, not going to get into it much but you may find more information in post 2, or throughout this thread (I explained a bit more details about it around page 4).
Also, check these out:
BFS FAQ
BFS Wikia
Android/MSM 3.10 BFS Port
What is different about this and the 3.10-ck1 bfs v440 patch available on ck.kolivas.org
- Backport fixes and features (not SMT NICE) from up to bfs v460ish
- Some of Alfred Chen's upstream synchronization and refactoring of BFS methods (linux-3.18/19-gc branch)
- My own syncing with mainline as well as backporting
- Suspend/Wake issues that were killer on bfs v440 for 3.10 are not present in this port - these issues have been resolved.
- You should NEVER report any issue related to this kernel upstream. Not android, linux, or BFS related. Do not report any issues anywhere but here.
This kernel is all about interactivity by default.
The default rr_interval is set to 6. The logic is the human eye cannot detect jitter until about 7ms. Try lowering it if you want to increase interactivity. Try increasing it to achieve higher thoroughput.
-------------------------
Zen/Shamu Features
- BFS CPU Scheduler
- @flar2 Wake Gestures
- @savoca KCAL Screen Color Control
- @imoseyon Vibration SysFS interface
- USB Fastcharge Support
- Fsync SysFS Interface
- Overclocking support
- Flar2 userspace CPU voltage control
- f2fs support and latest f2fs: f2fs/dev (even with ZenyKernel zip)
- FIOPS + BFQ + SIO in addition to the stock ROW, CFQ, Deadline, No-op I/O schedulers
- Several misc. CAF/msm + upstream updates/fixes.
- Forced encryption disabled. (Even With ZenyKernel zip)
- Added init.d support (ZenyKernel is up to your existing ROM/kernel)
- selinux adjustments for viper4android and other things (ZenyKernel is up to your existing ROM/kernel)
- Compatible with most ROMs, use ZenyKernel zip if there's compatibility issues.
- Added zRam support
- MPDecision disabled by default, replaced by touchboost listener + ZenDecision 2.0
- ZenyKernel based on @osm0sis AnyKernel2 to use for roms who break compatibility with stock ramdisk
I work based on real results from user experience, not numbers. I don't claim anything as a big deal if it isn't one. Zen is a no-nonsense, well-tested kernel making real improvements to interactivity in the kernel space.
---------
Releases
All of these builds are for android 5.1 and above, unless otherwise noted
Wipe /cache before flashing for best results
Versions
- Recovery Zip: Kernel+Ramdisk: Use this on a stock/stock-like rom, or on a rom without support for things like viper4android or init.d support. Flash in recovery.
- Boot.IMG: Kernel+Ramdisk: Same as recovery zip, except in the raw boot.img form. Can be flashed in fastboot, flashify, etc.
- ZenyKernel Zip: Kernel Only (+ no force encryption +f2fs support +zen settings): Will use the exact same ramdisk you already have. If you have issues with the other full versions, then dirty flash your rom and this on top of it.
3.10-zen21 "Cheap and Easy"
Changes:
- Compile with GCC 5.1
- Several bcmdhd/wifi driver updates
- Misc. CAF updates
- Fix come cores sticking to performance governor
3.10-zen21 Recovery Zip Download
3.10-zen21 boot.img (install via fastboot/twrp IMG) Download
3.10-zen21 ZenyKernel Zip (Use on top of ROM dirty flash if issues with the above two)
Legacy Releases
ZenDecision (zen20+)
You can still turn on MPDecision without any ill effects if desired
As of 5.1+ MPDecision is somehow responsible for at least the following:
- Raise MIN_FREQ to 1497MHz for 3 seconds on touch events
- Ensure CPUs come online after certain events, like thermal events (due to low battery for example)
ZenDecision is a simple "handler" for to keep CPUs online by the following logic:
- When screen comes on, make sure all CPUs are online if current battery level is above bat_threshold_ignore
ZenDecision tunables (/sys/kernel/zen_decision/):
- enabled (0=disabled, 1=enabled): Enable/Disable the driver from doing any work
- wake_wait_time (0-60000 ms, 1000 by default): How long to wait to execute CPU_UP work after screen comes online.
- bat_threshold_ignore(1-100, 0=disabled, 15 by default): The battery percentage to ignore CPU_UP operations. If current battery level is below this level, then the driver is essentially disabled.
How to enable overclocking (zen6+)
If your device is unstable at the overclocked frequencies, it is a hardware limitation with your device. Do not report it as a bug
To enable overclocking on zen6 or newer, you will need to use the recovery zip/aroma below.
You choose the max frequency you want, it pulls the boot.img from the device, adds a boot parameter specifying the OC frequency.
If you are not on zen6 or newer it will have no affect.
This does not install a kernel, you still have to install the kernel from one of the links above
Zen Overclock Enable v2
3.09GHz step only supported on zen20+
Thanks guys, and enjoy. Feedback is always appreciated.
XDA:DevDB Information
Zen Kernel, Kernel for the Nexus 6
Contributors
bbedward, purian23
Source Code: https://github.com/bbedward/ZenKernel_Shamu/
Kernel Special Features: Android/MSM BFS Port, kcal, gestures, cool stuff
Version Information
Status: Stable
Current Stable Version: 21
Stable Release Date: 2015-05-20
Created 2015-03-24
Last Updated 2015-05-2030To say I have been incredibly busy is an understatement.
However, I've finally received some incredible offers to start my career as a software engineer.
In celebration of the whole process finally coming to an end I will be finalizing and working on the reboot of zen kernel :highfive:29Hey guys,
I just wanted to toss this out there an say i'm proud of @bbedward! Today, he Graduates from the University of Toledo with his Software Engineering Degree (Computer Science & Engineering) with a Bright Future! He already has options at Oracle and GE as soon as he steps foot back in his hometown of Cleveland!
I honestly feel like his big brother with all the BS'n we've done over the past few years. He's taught me a lot (even though the punk is younger lol) and I'm pretty sure I've given him so good life morals to go by haha. Join me in Congratulating @bbedward for not only his awesome kernels and tons of XDA Community involvement/help through the years, but for generally being a cool dude. We'll surely look forward to what he has in store next for the tech community.
Thanks dude and Congrats
Purian2322@purian23's original name for the last release is applicable for zen15.
3.10-zen15 "Unbroken"
Changes:
- All the great changes of zen14 except without the BFS LLC cpumask selection - was an issue causer
- Updated kcal (I forgot to merge into 14)
3.10-zen15 Recovery Zip Download
3.10-zen15 boot.img (install via fastboot/twrp IMG) Download
3.10-zen15 AnyKernel Zip (Use for CM 12.1 or other roms that change ramdisk/sepolicy things)
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