KERNEL-NookOnFireShowtime V3.22 CM/AOKP/LiquidSmooth/Carbon/SGT7/Slim Rom Compatible!

[Demetris]

I proudly present to you
Nook On Fire Showtime V3.22
Nook On Fire Nemesis V2.4

Dear Nook Tablet users,
Welcome to the unbelievably Stable,Butter Smooth,Fast and Feature Rich: Nook On Fire Kernel!
This kernel is based on Official CM10.1 kernel sources.
I'll continue to add more features to the kernel in the future and when real life permits.
Oh, and yes: I built the kernel because I have fun doing so. But be not mistaken that I am a 'play-around kid': I dislike pulling in every little mod someone made. What I want is stability.
This kernel can be flashed on:
- SlimBean
- Official CM10.1
- LiquidSmooth
- AOKP Rom
- CarbonRom
- SGT7 Rom By TheForceUnleashed
You can use Trickster MOD Kernel Settings app from Google Play to control some aspects of this kernel
Link: https://play.google.com/store/apps/details?id=com.bigeyes0x0.trickstermod
I hope you enjoy my kernel
Nook On Fire kernel features:
*Up2date kernel Revision.
*Up2date CPU Schedulers.
*Up2date CPU Governors.
*Pushes Nook Tablet inbuilt hardware's to the maximum of their capabilities.
*Performance/battery carefully picked tweaks
*Default max CPU frequency: 1.20 GHz
*LCD Panel tweaked to reach manufacturer recommendations and reach maximum performance as the settings are taken by the datasheet pdf.
*ARM CPU topology! More info here
*More tweaks under the hood (check sources if you're interested)
*Lots more **** - flash and see for yourself

F.A.Q:
1. My device rebooted or crashed, how can I help?
A: Get me /proc/last_kmsg or logcat.
2. Battery sucks, my device is not entering deep sleep.FIX PLOX!
A: Fix it yourself, it's an app waking your device up not the kernel's problem
3. Do I need to wipe anything when flashing this kernel?
A: No.
4. No WiFi?
A: Rename /etc/firmware/ti-connectivity/wl1271-nvs_127x.bin -> wl1271-nvs.bin
5. Wrong MAC address?
A: This is a residue problem (dirty installation). Just delete wl1271-nvs.bin and reboot.
6. Does this kernel has X or Y mod?
A: Learn to read, everything you need to know is in the features list, changelog or public repo.

Changelog History:

Nook On Fire Showtime Kernel

V3.22 changelog
- OMAP4:Fix HSMMC 3/4/5 master clock
- Nohz/sched: don't go tickless when CPU is loaded
- LPDDR2 RAM timings optimization for 10% speed increase

V3.21 changelog
- 10! Yes 10 touch driver is back Thanks to Mik_os
- GPU is pushed to the limits 384Mhz from 307mhz
- I give back to gpu the volt juice it had it might need some adjustment still.
- Our cpu frequencies are changed
- Cpu frequencies are now these
200Mhz/600Mhz/999Mhz/1.1ghz/1.22ghz


V3.2 changelog
- Some more cherry picks
- 720p/1080p video playback seems fixed.
- Reverted previous hashcode commit about usb detection and power down.(was eating battery)
- Am declaring this release stable if no major issues surface.
- Kernel now is ready for serious heavy weight work.

V3.11 changelog
- Trying to fix 720p/1080p video playback issues
- Pushed a reverted commit about usb detection and power down from Hashcode for testing
- Repo Synced to RC5
- Second Showtime release but things show stable enough for me
- If no negative feedback i will declare next release stable So speak now or be silent forever.

V3 changelog
- First released kernel based on Kindle Fire 2 and I9100G (t1) source code.
- Linux Kernel 3.0.81
- More than 100 commits
- New features added and more to come
- Might need some fine-tuning as this is 1st release.
- Highly experimental so if you don’t need adventures stay with NOF-Nemesis for now


Nook On Fire Nemesis Kernel
V2.4 changelog
- I started borrowing code from Kindle Fire kernel, so for now we have code changes from them in:
- GCX
- USB
- MMC
- EMIF
- WIFI
And 2 Great Cherry picks from Hashcode that might fix kernel issues some Nook Tablets have
1. https://github.com/Ntemis/NOF-Nemesis/commit/f0f3f061f94544fb87c429d9e93ae417e00b3458
2. https://github.com/Ntemis/NOF-Nemesis/commit/0799813998b44dcfae0728cd8f16576931b4432f
Edit: Confirmed, now it boots on problematic nooks that couldnt use 1.2ghz previously.Welcome to 1.2ghz era boyz

V2.21 changelog
- Kernel 3.0.80
- Tried to boost io performance
- slub: zero page, trying to fix boot crashes
- Lowered cache presure from 100 -> 50

V2.11 changelog
- Galaxy Nexus Kernel processwith addictional code from franco: shorten freezer sleep time using exponential backoff
- Borrowed immoseyon interactivex governor and edit it to fuction on our interactive, when using interactive you now use interactivex.
- I tunalize interactivex header so we can use interactivex from Gnex.
- Watchdog driver borrowed from Gnex

V2.1 changelog
- Touch driver code review
- Accelerometer code review
- Kernel 3.0.79
- Some wireless code borrowed from Tuna
- Fix some issues with kernel power proccess and filesystem syncing

V1.73 changelog
- More Changes
- Upsteam Synced
V1.72 changelog
- Some more fixes and addictions

V1.70 changelog
- Linux Kernel 3.0.78
- Sio updates by Boy Petersen

V1.66 changelog
- Power related changes like Wakelock/Suspend
- Timer related issues
- Sleep and wake up changes
- Fixes in several mempolicy leaks in tmpfs mount logic
- OMAP4430 Cpu Governors Finetunning to:
Hyper/Conservative/Hotplug/Ondemand/PegasusQ and Wheatley
- Port Snappy and Frontswap and Reworked on Zram tweaks and enchancements.
- CM10.1 RC2 Synced
- Now when usb is plugged for charge etc, it wakes up :highfive:

V1.60 changelog
- Linux Kernel Upgrade to 3.0.77
- Finetuned page writeback for Vmalloc=128mb
- Upstream Sync

V1.52 changelog
- Fixed Smartass V2
- Added HYPER Cpu Governor
- Disabled Fair Sleepers for UI smoothness

V1.51 changelog
- Added SmartAss V2 Cpu Governor
- Reduced Cpu latency from 40ms to 15ms(testing)
- Since no reports came up after i released UnderVolt Kernel for test now UnderVolting is officially implemented into my kernel.

V1.50 changelog
- Add assembler versions of AES and SHA1 for ARM platforms. This has provided
up to a 50% improvement in IPsec/TCP throughout for tunnels using AES128/SHA1.
- ARMv7: Flush the vectors page using the base address.
- OMAP4: PM: fix overconsumption on OFF mode
- SIO I/O sheduler updates and tweaks finetunned to omap44xx
- CFQ I/O sheduler updates and tweaks finetuned to omap44xx
- Upgraded Linux Kernel to V3.0.76

V1.42 changelog
Changes are a lot more and you are more than welcome to read my github.
Some of them are:
- Low Memory Killer ported from 3.9 kernel
- Some ondemand tweaks to increase frequency early.
- Disable CRC in Mmc driver
- Read ahead fine tunning
- Mmc core: Fix possbile memory leak
- Interactive fixes and updates
- Ported Logger from mainline 3.9
- Decreased the amount of time the device waits after entering low power mode to freeze processes.
- Reduce System logging
- Prevent enqueue of hrtimer on dead CPU
- Another kernel Upgrade to 3.0.75
- Reverted some commits that i was suspecting them to be my troublesome ones.
They were causing troubles like hard power downs and lockups.

V1.35 changelog
- Reduced swappiness from 60 to 45
- Make kernel actually use arm cpu topology

V1.34 changelog
Some minor changes vs the previous kernel base.
I removed some things i didnt like.If you need them please ask for them.
-Fsync
-Ondemandplus
-Make sure you download the modules needed for new rebased kernel!

Nook On Fire Kernel :
V13.3 changelog:
- Finetuned newly introduced Governors for Omap4430 Cpu.
- Added SLQB low-level memory manager More info here
- I have disabled Fsync because it was causing major lags.
Anyone that want to use it it can enable it inside Trickster MOD Kernel Settings from Gplay.

V13.2 changelog:
- Added CPU governor: ondemandplus (more info here)
- Added CPU governor: pegasusq
* ondemandplus is an ondemand- and interactive-based governor that has additional power-saving capabilities while maintaining very snappy performance. (Is finetuned for omap4460 for now, i will fix that when i find more free time )
* pegasusq is an ondemand based governor with hotplugging (=disables the second CPU core when it is not needed). It even hotplugs after some seconds when the screen is on.
- Added ARM CPU topology: multi-core scheduling (enabled by default; saves battery by scheduling load among the CPU cores; more info here)
- Added Fsync and enabled it by default

fsync() transfers ("flushes") all modified in-core data of (i.e., modified buffer cache pages for) the file referred to by the file descriptor fd to the disk device (or other permanent storage device) so that all changed information can be retrieved even after the system crashed or was rebooted. This includes writing through or flushing a disk cache if present. The call blocks until the device reports that the transfer has completed. It also flushes metadata information associated with the file (see stat(2)).

- Some more tweaks for Speed
V12.1 changelog:
- Hardcoded Row frequencies by a research group of the xda community.
- Load frequency edits so we reach Gnex Kernel speed and responsiveness
- Tried to fix usb mounting freezes and usb cut outs.
- At This point i find the kernel enough stable and fast for any task you will need it to perform at.

V12 changelog:
- Kernel Updated to latest 3.0.xx(74)
- Updated Row I/O Sheduler to latest 2013 with all upstream fixes

V11 changelog:
- Major changes taken from francisco franco Tuna kernel aka Gnex
- Kernel major jump from 3.0.62 to 3.0.73!
- For wifi to work new modules compiled against kernel 3.0.73 needed and posted.
Notice:
From now on and if you are on same rom you only need to flash kernel, when you flash a new rom a modules package reflash is required or else wifi wont work.

V10 changelog:
- Wakelock changes taken from Samsung latest JB source code
- Suspend changes taken from Samsung latest JB source code
- Memory timings changes copied from B&N Nook HD source code.

V09 changelog:
- Boxer Lcd Panel at 59.1Mhz per datasheet with accompanied settings
- More compiler optimizations
V08 changelog:
- Use ARM Hardware Float instead of software. More info here: http://wiki.debian.org/ArmHardFloatPort/VfpComparison
- Use -O3 flags when compiling Gpu driver. ccflags-y += -O3 in drivers/gpu/makefile (Thanks Mnazim)
- Improoved page writeback tweaks
- Nook HD Panel Settings
- Epic Citadel force close fixed {61fps woot!}
V03 changelog:
- Nook HD source complete memory timings
- Cpu idle code tweaks
- Silicon Performance Enabled aka 1.2Ghz

You can find all releases :
Goo.im Link:
http://goo.im/devs/demetris/Acclaim/NookOnFire
Dev-host:
http://d-h.st/users/demetris/?fld_id=16788#files

Nook On Fire Showtime CWM/TWRP Links:

One Package flasher (Kernel+Modules) for V3.22 http://tinyw.in/bALo

One Package flasher (Kernel+Modules) for V3.21 http://tinyw.in/OFgN back Sorry

One Package flasher (Kernel+Modules) for V3.2 http://tinyw.in/uJfz

V3.2 Kernel Download Link: http://tinyw.in/xd7M
V3.2 Kernel Modules (required)!Download Link: http://tinyw.in/Mxoo

V3.11 Kernel Download Link: http://tinyw.in/5z0M
V3.11 Kernel Modules (required)!Download Link: http://tinyw.in/MBw0

Kernel
http://goo.im/devs/demetris/NookOnFire/NOF-Showtime-Kernel-V3.zip
Modules
http://goo.im/devs/demetris/NookOnFire/NOF-Showtime-Modules-V3.zip

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Nook On Fire Nemesis CWM/TWRP Links:
V2.4 Kernel Download Link: http://d-h.st/YEA
V2.4 Kernel Modules (required)!Download Link: http://d-h.st/sZa

V2.21 Kernel Download Link: http://d-h.st/G2S
V2.21 Kernel Modules (required)!Download Link: http://d-h.st/oOh

V2.11 Kernel Download Link: http://d-h.st/TMo
V2.11 Kernel Modules (required)!Download Link: http://d-h.st/6v4

V2.1 Kernel Download Link: http://d-h.st/ORM
V2.1 Kernel Modules (required)!Download Link: http://d-h.st/l3y

V1.73 Kernel Download Link: http://d-h.st/Dkf
V1.73 Kernel Modules (required)!Download Link: http://d-h.st/iWe

V1.72 Kernel Download Link:http://d-h.st/uCu
V1.72 Kernel Modules (required)!Download Link:http://d-h.st/aoj

V1.70 Kernel Download Link: http://d-h.st/agX
V1.70 Kernel Modules (required)!Download Link: http://d-h.st/flX

V1.66 Kernel Download Link: http://d-h.st/3pk
V1.66 Kernel Modules (required)!Download Link: http://d-h.st/W4y

V1.60 Kernel Download Link: http://d-h.st/X7K
V1.60 Kernel Modules (required)!Download Link: http://d-h.st/ayE

V1.52 Kernel Download Link: http://d-h.st/jiL
V1.52 Kernel Modules (required)!Download Link: http://d-h.st/IWe

V1.51 Kernel Download Link: http://d-h.st/Iz8
V1.51 Kernel Modules (required)!Download Link: http://d-h.st/LIH

V1.50 Kernel Download Link: http://d-h.st/G3m
V1.50 Kernel Modules (required)!Download Link:http://d-h.st/Fan

V1.42 Kernel Download Link: http://d-h.st/dVI
V1.42 Kernel Modules (required)!Download Link: http://d-h.st/Hvr

V1.35 Download Link:http://d-h.st/b9r
V1.34 Download Link:http://d-h.st/Z0D
V1.34 Kernel Modules (required)!Download Link: http://d-h.st/OrS

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Nook On Fire CWM/TWRP Links:
V13.3 Download Link: http://d-h.st/i7L

http://celticstorage.co.uk/cm10/NOF-Kernel-V13.2.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-V12.1.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-V12.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-V11.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-V10.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-09.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-08.zip

http://celticstorage.co.uk/cm10/NOF-Kernel-03.zip
Because of major kernel upgrade new modules needed also!

Modules for NOF V11 and UP!:
http://celticstorage.co.uk/cm10/3.0.xx_Modules.zip

Installation:
Copy zip archive to sdcard
Reboot to recovery
Select to install zip from sdcard
Navigate to archive
Flash and reboot.

Fastboot way:

Unzip archive, get boot.img out of it and,

Installation:
Enter fastboot mode from cyanoboot menu by holding N button and type:
Fastboot flash boot boot.img
Fastboot reboot
Profit.
Succulent Roms NOF Version Link:
http://celticstorage.co.uk/cm10/Succu-NOF.zip
Untested
Source:
https://github.com/Ntemis/kernel3NookTablet/tree/p-android-omap-3.0.y

Find Kernel sources here:
Nook On Fire Nemesis:
https://github.com/Ntemis/NOF-Nemesis
Nook On Fire:
https://github.com/Ntemis/NOF_kernel_bn_acclaim

If you find my work useful please press thanks button!
Credits to:
Kuzma30
chrmhoffmann
Hashcode
Mik_os
Rebellos
Mnazim
Fransisco Franco
Boype
Loosethisskin
Imoseyon
and all other developers who do not remember and whos code is now being used in our kernel.
Thank you very much.

 

[younggunner]

thanks!

downloading now thanks for your contribution!:highfive:

 

[Demetris]

What Is A Kernel?

Android (like many other Smartphone operating systems) runs on the Linux kernel. The Linux kernel was created in the early 1990’s by a gentleman named Linus Torvalds in Helsinki Finland. It’s incredibly stable, incredibly friendly, and incredibly difficult for the layman to understand and modify. Thankfully it’s also very popular so it has been ported on to a multitude of hardware, including our Android devices.
Think of the kernel as an interface layer between the hardware and software on your device. The kernel decides when things happen, such as the LED indicator gets lit. An application sends a request to the operating system to blink the LED. The operating system then sends the request to the kernel, which makes the light flash for the amount of time requested by the OS.
What sounds like a round-about way to get things done is also what makes the system so scalable and robust. Application developers only have to code in a way the operating system understands and the kernel makes it work on the hardware. This also keeps the application running in it’s own user-space and separate from the kernel. That means when you run the latest uber-cool app that wasn’t designed for your particular OS version, or is still very beta and it crashes, the kernel gives you the option to Force Close the application and the kernel can run untouched.
In a standard Android ROM (we will leave developer images and the like for another discussion) the kernel is bundled along with a set of instructions that tell the device how to load the kernel and the OS during boot. This is the boot.img that you see inside a zipped ROM that you're not able to easily open. The device knows to extract this image to internal memory (the ramdisk) and follow a series of scripts (init scripts) to load the kernel and then the other portions of the OS. That’s what’s happening while you’re watching the boot animation. Interestingly enough this is done the same way for a PC, your smartphone, an Android tablet, or even a smart Linux powered toaster. If you’re feeling exceptionally geeky, plug your Android phone into the USB port on your PC and let the PC boot from the USB device. No, it doesn’t actually load, but you can watch the animation while it tries to match up the hardware support with what’s inside your PC. As I said, Linux is amazingly scalable and as a result so is Android.

GOVERNORS

1) Ondemand:
Default governor in almost all stock kernels. One main goal of the ondemand governor is to switch to max frequency as soon as there is a CPU activity detected to ensure the responsiveness of the system. (You can change this behavior using smooth scaling parameters, refer Siyah tweaks at the end of 3rd post.) Effectively, it uses the CPU busy time as the answer to "how critical is performance right now" question. So Ondemand jumps to maximum frequency when CPU is busy and decreases the frequency gradually when CPU is less loaded/apporaching idle. Even though many of us consider this a reliable governor, it falls short on battery saving and performance on default settings. One potential reason for ondemand governor being not very power efficient is that the governor decide the next target frequency by instant requirement during sampling interval. The instant requirement can response quickly to workload change, but it does not usually reflect workload real CPU usage requirement in a small longer time and it possibly causes frequently change between highest and lowest frequency.

2) Ondemandx:
Basically an ondemand with suspend/wake profiles. This governor is supposed to be a battery friendly ondemand. When screen is off, max frequency is capped at 500 mhz. Even though ondemand is the default governor in many kernel and is considered safe/stable, the support for ondemand/ondemandX depends on CPU capability to do fast frequency switching which are very low latency frequency transitions. I have read somewhere that the performance of ondemand/ondemandx were significantly varying for different i/o schedulers. This is not true for most of the other governors. I personally feel ondemand/ondemandx goes best with SIO I/O scheduler.

3) Conservative:
A slower Ondemand which scales up slowly to save battery. The conservative governor is based on the ondemand governor. It functions like the Ondemand governor by dynamically adjusting frequencies based on processor utilization. However, the conservative governor increases and decreases CPU speed more gradually. Simply put, this governor increases the frequency step by step on CPU load and jumps to lowest frequency on CPU idle. Conservative governor aims to dynamically adjust the CPU frequency to current utilization, without jumping to max frequency. The sampling_down_factor value acts as a negative multiplier of sampling_rate to reduce the frequency that the scheduler samples the CPU utilization. For example, if sampling_rate equal to 20,000 and sampling_down_factor is 2, the governor samples the CPU utilization every 40,000 microseconds.

4) Interactive:
Can be considered a faster ondemand. So more snappier, less battery. Interactive is designed for latency-sensitive, interactive workloads. Instead of sampling at every interval like ondemand, it determines how to scale up when CPU comes out of idle. The governor has the following advantages: 1) More consistent ramping, because existing governors do their CPU load sampling in a workqueue context, but interactive governor does this in a timer context, which gives more consistent CPU load sampling. 2) Higher priority for CPU frequency increase, thus giving the remaining tasks the CPU performance benefit, unlike existing governors which schedule ramp-up work to occur after your performance starved tasks have completed. Interactive It's an intelligent Ondemand because of stability optimizations. Why??
Sampling the CPU load every X ms (like Ondemand) can lead to under-powering the CPU for X ms, leading to dropped frames, stuttering UI, etc. Instead of sampling the CPU at a specified rate, the interactive governor will check whether to scale the CPU frequency up soon after coming out of idle. When the CPU comes out of idle, a timer is configured to fire within 1-2 ticks. If the CPU is very busy between exiting idle and when the timer fires, then we assume the CPU is underpowered and ramp to max frequency.

5) Interactivex:
This is an Interactive governor with a wake profile. More battery friendly than interactive.

6) Lulzactive:
This new find from Tegrak is based on Interactive & Smartass governors and is one of the favorites.
Old Version: When workload is greater than or equal to 60%, the governor scales up CPU to next higher step. When workload is less than 60%, governor scales down CPU to next lower step. When screen is off, frequency is locked to global scaling minimum frequency.
New Version: Three more user configurable parameters: inc_cpu_load, pump_up_step, pump_down_step. Unlike older version, this one gives more control for the user. We can set the threshold at which governor decides to scale up/down. We can also set number of frequency steps to be skipped while polling up and down.
When workload greater than or equal to inc_cpu_load, governor scales CPU pump_up_step steps up. When workload is less than inc_cpu_load, governor scales CPU down pump_down_step steps down.
Example:
Consider
inc_cpu_load=70
pump_up_step=2
pump_down_step=1
If current frequency=200, Every up_sampling_time Us if cpu load >= 70%, cpu is scaled up 2 steps - to 800.
If current frequency =1200, Every down_sampling_time Us if cpu load < 70%, cpu is scaled down 1 step - to 1000.

7) Lulzactiveq:
Lulzactiveq is a modified lulzactive governor authored by XDA member robertobsc and is adapted in Siyah kernel for GS2 and GS3. Lulzactiveq aims to optimize the second version of luzactive from Tegrak by a) providing an extra parameter (dec_cpu_load) to make scaling down more sensible, and b) incorporating hotplug logic to the governor. Luzactiveq is the first ever interactive based governor with hotplugging logic inbuilt (atleast the first of its kind for the exynos platform). When CPU comes out of idle loop and it's time to make a scaling decision, if load >= inc_cpu_load CPU is scaled up (like original luzactiveq) and if load <dec_cpu_load, CPU is scaled down. This possibly eliminates the strict single cut-off frequency for luzactiveq to make CPU scaling decisions. Also, stand hotplug logic runs as a separate thread with the governor so that external hotplugging logic is not required to control hotplug in and out (turn On and Off) CPU cores in multi core devices like GS2 or GS3. Only a multi core aware governor makes real sense on muti-core devices. Lulzactiveq and pegasusq aims to do that.

8) Smartass:
Result of Erasmux rewriting the complete code of interactive governor. Main goal is to optimize battery life without comprising performance. Still, not as battery friendly as smartassV2 since screen-on minimum frequency is greater than frequencies used during screen-off. Smartass would jump up to highest frequency too often as well.

9) SmartassV2:
Version 2 of the original smartass governor from Erasmux. Another favorite for many a people. The governor aim for an "ideal frequency", and ramp up more aggressively towards this freq and less aggressive after. It uses different ideal frequencies for screen on and screen off, namely awake_ideal_freq and sleep_ideal_freq. This governor scales down CPU very fast (to hit sleep_ideal_freq soon) while screen is off and scales up rapidly to awake_ideal_freq (500 mhz for GS2 by default) when screen is on. There's no upper limit for frequency while screen is off (unlike Smartass). So the entire frequency range is available for the governor to use during screen-on and screen-off state. The motto of this governor is a balance between performance and battery.

10) Intellidemand:
Intellidemand aka Intelligent Ondemand from Faux is yet another governor that's based on ondemand. Unlike what some users believe, this governor is not the replacement for OC Daemon (Having different governors for sleep and awake). The original intellidemand behaves differently according to GPU usage. When GPU is really busy (gaming, maps, benchmarking, etc) intellidemand behaves like ondemand. When GPU is 'idling' (or moderately busy), intellidemand limits max frequency to a step depending on frequencies available in your device/kernel for saving battery. This is called browsing mode. We can see some 'traces' of interactive governor here. Frequency scale-up decision is made based on idling time of CPU. Lower idling time (<20%) causes CPU to scale-up from current frequency. Frequency scale-down happens at steps=5% of max frequency. (This parameter is tunable only in conservative, among the popular governors )
To sum up, this is an intelligent ondemand that enters browsing mode to limit max frequency when GPU is idling, and (exits browsing mode) behaves like ondemand when GPU is busy; to deliver performance for gaming and such. Intellidemand does not jump to highest frequency when screen is off.

11) Lazy:
This governor from Ezekeel is basically an ondemand with an additional parameter min_time_state to specify the minimum time CPU stays on a frequency before scaling up/down. The Idea here is to eliminate any instabilities caused by fast frequency switching by ondemand. Lazy governor polls more often than ondemand, but changes frequency only after completing min_time_state on a step overriding sampling interval. Lazy also has a screenoff_maxfreq parameter which when enabled will cause the governor to always select the maximum frequency while the screen is off.

12) Lagfree:
Lagfree is similar to ondemand. Main difference is it's optimization to become more battery friendly. Frequency is gracefully decreased and increased, unlike ondemand which jumps to 100% too often. Lagfree does not skip any frequency step while scaling up or down. Remember that if there's a requirement for sudden burst of power, lagfree can not satisfy that since it has to raise cpu through each higher frequency step from current. Some users report that video playback using lagfree stutters a little.

13) Lionheart:
Lionheart is a conservative-based governor which is based on samsung's update3 source. Tweaks comes from 1) Knzo 2) Morfic. The original idea comes from Netarchy. See here. The tunables (such as the thresholds and sampling rate) were changed so the governor behaves more like the performance one, at the cost of battery as the scaling is very aggressive.

To 'experience' Lionheart using conservative, try these tweaks:
sampling_rate:10000 or 20000 or 50000, whichever you feel is safer. (transition latency of the CPU is something below 10ms/10,000uS hence using 10,000 might not be safe).
up_threshold:60
down_threshold:30
freq_step:5
Lionheart goes well with deadline i/o scheduler. When it comes to smoothness (not considering battery drain), a tuned conservative delivers more as compared to a tuned ondemand.

14) LionheartX
LionheartX is based on Lionheart but has a few changes on the tunables and features a suspend profile based on Smartass governor.

15) Brazilianwax:
Similar to smartassV2. More aggressive ramping, so more performance, less battery.

16) SavagedZen:
Another smartassV2 based governor. Achieves good balance between performance & battery as compared to brazilianwax.

17) Userspace:
Instead of automatically determining frequencies, lets user set frequencies.

18) Powersave:
Locks max frequency to min frequency. Can not be used as a screen-on or even screen-off (if scaling min frequency is too low).

19) Performance:
Sets min frequency as max frequency. Use this while benchmarking!

So, Governors can be categorized into 3/4 on a high level:
1.a) Ondemand Based:
Works on "ramp-up on high load" principle. CPU busy-time is taken into consideration for scaling decisions. Members: Ondemand, OndemandX, Intellidemand, Lazy, Lagfree.
1.b) Conservative Based:
Members: Conservative, Lionheart, LionheartX
2) Interactive Based:
Works on "make scaling decision when CPU comes out of idle-loop" principle. Members: Interactive, InteractiveX, Lulzactive, Luzactiveq, Smartass, SmartassV2, Brazilianwax, SavagedZen.
3) Weird Category:
Members: Userspace, Powersave, Performance.

 

[LacerdaPT]

Hi
When should this be flashed? Anytime? Immediately after the rom?

Thanks for your continuous work!

Sent from my NookTablet using xda app-developers app

 

[Demetris]

Hi,
Yes should be flashed after the rom.

 

[justibasa]

What gov are you recommending for this. It sure flies at 1200. Nice and smooth.

Don't like me...... BITE ME!!!

 

[Demetris]

Too soon to tell, am updating Row and i am adding Smartass2 pegasusQ interactiveX soon.
I updated Lcd with Nook HD configs and it rocks, amazing clarity and performance.
Stay tuned

 

[justibasa]

Too soon to tell, am updating Row and i am adding Smartass2 pegasusQ interactiveX soon.
I updated Lcd with Nook HD configs and it rocks, amazing clarity and performance.
Stay tuned

Sounds nice. Guess I'll use interactive for now. I'll let you know how it goes. If you ever need a tester for anything I am more than willing any time. Thanks for the work on this device.

Don't like me...... BITE ME!!!

 

[fattire]

Nice job. For completeness can you post a link to source? Might be there-- I did a quick search and didn't see it. Any point to adding the BFQ io scheduler? Or is that in the stock kernel, I cant' remember.

 

[kur41]

Hi demetris_I:

Is this kernel in any way related to kuzma30's kernel work?

 

[Demetris]

@kur41
You have any other kernel in mind that can boot on Nook Tablet? :silly:
@fattire
BFQ io scheduler is already implemented

 

[LacerdaPT]

Hi. Thanks for your answer.

Do I really need to format the sdcard onto exfat? Didn't get it.. :/

Sent from my Barnes & Noble Nook Tablet using xda app-developers app

 

[Demetris]

Hi. Thanks for your answer.

Do I really need to format the sdcard onto exfat? Didn't get it.. :/

Sent from my Barnes & Noble Nook Tablet using xda app-developers app

Nope.
Only if you need exfat filesystem support example files bigger than 4gb onto sd card.

 

[Demetris]

New kernel released,
Flash, test, and report back.
Thanks
Edit:
Source changes pushed to git

 

[macrossmerrell]

YES!!! 1200mhz! Thank you!

Sooo far sooo good on CM10.1

Don't suppose 1300 or 1400 could be added for us to try on our devices. Or just mine... Screw them! I want it!

Thanks again for all your hard work! I REALLY appreciate it!

Merrell

Sent from my Barnes & Noble Nook Tablet using Tapatalk 2

 

[paulbonner]

Quick question -- will this kernel work with your Nooked CM10.1 (Succulent based) ROM? I've been running that for four or five days and loving it -- my Nook Tablet has never felt as quick and smooth. Thanks very much for all the great work you're doing.

 

[Demetris]

Quick question -- will this kernel work with your Nooked CM10.1 (Succulent based) ROM? I've been running that for four or five days and loving it -- my Nook Tablet has never felt as quick and smooth. Thanks very much for all the great work you're doing.

Here is what you can do,
get this v08.zip package and the 3rd edition rom
copy the v08.zip once more in a folder and rename it to backup.zip
get boot.img from 3rd edition rom and replaced the boot.img in backup.zip
tranfer both into sd card and reboot to recovery.
flash v08 and reboot.
If it works your golden if not press power key to shutdown device and give another retry
If it fails again go flash backup.zip and report here that it doesnt work, so other know and you save them precious time doing the same.

 

[razzbaronz]

Here is what you can do,
get this v08.zip package and the 3rd edition rom
copy the v08.zip once more in a folder and rename it to backup.zip
get boot.img from 3rd edition rom and replaced the boot.img in backup.zip
tranfer both into sd card and reboot to recovery.
flash v08 and reboot.
If it works your golden if not press power key to shutdown device and give another retry
If it fails again go flash backup.zip and report here that it doesnt work, so other know and you save them precious time doing the same.

Unfortunately this kernel won't work with that ROM. Just tried it, will not boot.

 

[Ditchrat69]

Unfortunately this kernel won't work with that ROM. Just tried it, will not boot.

Yep, same for me

Sent from my SGH-T959V using xda app-developers app

 

[Demetris]

Added Succulent kernel with NOF changes
Enjoy
P.s
Untested
Source:
https://github.com/Ntemis/kernel3NookTablet/tree/p-android-omap-3.0.y