[KERNEL][CM7][Froyo] Dalingrin's OC kernel w/fixed IO perf (quadrant) & 1.2Ghz test

Divine_Madcat · Mar 25, 2011

[KERNEL][CM7][Froyo] Dalingrin's OC kernel w/fixed IO perf (quadrant) & 1.2Ghz test

Disclaimer: As always, flash at your own risk.

Background
So, recently there has been alot of debate over why quadrant (and to some extent, system performance) was lower with the OC kernel, as compared to the stock CM7 kernel. (http://xdaforums.com/showthread.php?t=1002504) As part of my examining the problem, i went looking for a solution. Starting from the first OC CM7 kernel, i would run quadrant and see how the performance fared. I finally found the issue appeared in the 3-08a kernel; using that, i rolled back changes until i found the commit remove to fix the issue. Specifically, it seems to be somewhere in the 2.6.29.6 update: https://github.com/dalingrin/nook_kernel/commits/gingerbread-exp

In short, using his source, i have compiled a kernel with fixed I/O performance, and all his other tweaks (interactive gov, etc).

So, I want to make this clear; this is still dalingrin's kernel; in no way do i wish to take credit for his work. But, while he is out, work must go on, right?

Information
Who is this kernel for?
eMMC Froyo and CM7 users

Will this work on SD cards?
It may if you manually replace you uImage, but i cannot guarantee it (since i cannot test it)

Is everything working in this release?
everything like bluetooth and dsp should still be just fine (you may have to do a few hard shutdowns/reboots to kick on BT, like normal).

Kernel Links -3/25/10
OC kernels (up to 1100Mhz, Interactive gov, BT and DSP):
Regular
http://www.mediafire.com/?k00ruvyulf01y64

Extra network features (PPP, etc)
http://www.mediafire.com/?i9h76wn483tk16v

OC kernel (up to 1190Mhz, Interactive gov, BT and DSP):
http://www.mediafire.com/?v6d2jpzaynvchde
For those having problems setting this speed in the CM7 performance settings, give setCPU a try, but don't use profiles. Using set CPU, i am able to get my system stable at 1190, where the CM7 manager instantly locks up.

Feedback
After flashing, please make note of OVERALL system response. The dip in quadrant scores prompted the fix, but i feel that the system is overall better; I would like some more input if others are seeing this as well.

Any and all feedback is welcome, and I will do what i can for support...

Nburnes · Mar 25, 2011

Great job man, you and dalingrin both!

Ran 3 quadrant tests on newest nightly (#30)
1. 1856
2. 1700 even
3. Whopping 2030!

ADude · Mar 25, 2011

Can you be more specific about which network features are in the second choice ?

Thanks !!

Divine_Madcat · Mar 25, 2011

ADude said:
Can you be more specific about which network features are in the second choice ?

Thanks !!

Um....truth is, i am really not too familiar with it, but looking a the diff between the two configs:

# Core Netfilter Configuration
# IP: Netfilter Configuration
# CONFIG_TUN
# CONFIG_PPP

I am trying out the net kernel again, to see if it is better than the last time i tried it..
Edit: Its looking better than the last time i tried it. Launcher pro hangs for a but on startup, but so far so good after that.

360Razir · Mar 25, 2011

Just started using CM7 last night (w/bottom keys mod, so the nightly is from a few revisions back), but just installed this kernel (the regular version, w/out the Net adds, which I don't need), wiped cache & Dalvik, rebooted, set OC to 1100 and "performance" in CyangenMod Settings and now getting 1918 Quad score...vs. 1372 on the stock kernel with no OC.

I can definitely live with that score...great work to you and dalingrin!!

dalingrin · Mar 25, 2011

Thanks for taking care of this while I am gone. Much appreciated.
The update to *.6 is not necessary anyway.
When I get back I will revert the *.6 update and compile some of the netfilter/iptables and tun as modules as this seems to be more compatible than compiling them directly into the kernel.

moonpie28 · Mar 25, 2011

Madcat, kudos to you. This is perceptibly faster.

dalamchops · Mar 25, 2011

great work!

hazridi · Mar 25, 2011

so is this a 2.6.29.5 kernel then?

dalamchops · Mar 25, 2011

WOW, scrolling through XDA forum is much smoother than it used to be.

Homer_S_xda · Mar 25, 2011

Tried on SDcard, installed by copying uImage to Boot. Reboots to EMMC when trying to load desktop. Back to CM7 stock. I guess I'll wait. Thanks though!

Homer

chisleu · Mar 25, 2011

Can I have the config file for the first? I'm going to play with the kernel a bit.

EDIT: I'm just going to keep my big mouth shut for a while. I hoped it was just a bug with quadrant, but I flashed your kernel just now. There is a huge difference in interactivity. I was playing with the app drawer yesterday and couldn't get it to be smooth with "labels fade in" turned on and a 1000ms or so time on the animation for the app drawer. Now it's perfect every time.

GOOD JOB!

marlonbr · Mar 25, 2011

I love Open Source.

Will try this in some minutes. (Nook charging)

Ok, tested it. My scores below.

** QUADRANT SCORES **
Before update, 1100mhz: ~700
After update, 800mhz: ~1500
Now, 1100mhz: 1920
**********************

Awesome!

eghill1125 · Mar 25, 2011

Just flashed it on mine and seems silky smooth to me. Not real sure there is a big difference, but it is not worse at least. Seems better to me.. Good job Madcat!!

Waiting anxiously for Dalingrin to return to his lab and see what else he can whip up for us..

barrist · Mar 25, 2011

nice!

i'm getting the same numbers as others (~1800) now. haven't really tested for overall smoothness yet.

cowballz69 · Mar 25, 2011

will this kernel ever get a nookie version?

Divine_Madcat · Mar 25, 2011

cowballz69 said:
will this kernel ever get a nookie version?

I have to admit - i said CM7 only, since that is all i have to test it on. If you do want to try it, you don't really risk anything; if it doesn't work, simply reboot to recovery and flash your last working kernel again.

As it is, i haven't really given a good look at what might be different between versions, so i can't give much advice on why it would/wouldn't work on Froyo.

victle · Mar 25, 2011

Homer_S_xda said:
Tried on SDcard, installed by copying uImage to Boot. Reboots to EMMC when trying to load desktop. Back to CM7 stock. I guess I'll wait. Thanks though!

Homer

Got the same issue with the Net feature kernel. However the other one works fine. Got 1918 Quadrant on SD Card with OC 1100 GHz + interactive gov.

So I guess CM7 performance on SD is not too bad compared to eMMC

@Divine_Madcat : Could you look into the problem of the Net features kernel with SD Card booting? It run into eMMC after the bootanimation.

Thanks much for your work, an action is much better than thousand words !!

SCWells72 · Mar 25, 2011

I tried both of these from SD card. The non-net features version boots but posted some terrible #s for me (<700 Quadrant and ~6-7 Linpack); the net features version doesn't boot. Is there something special I need to do with the first kernel to see the benefits? I checked and was clocked to 1.1GHz in CM settings.

Divine_Madcat · Mar 25, 2011

victle said:
@Divine_Madcat : Could you look into the problem of the Net features kernel with SD Card booting? It run into eMMC after the bootanimation.

Thanks much for your work, an action is much better than thousand words !!

Ill be happy to take a look, but can't promise anything right away.

SCWells72 said:
I tried both of these from SD card. The non-net features version boots but posted some terrible #s for me (<700 Quadrant and ~6-7 Linpack); the net features version doesn't boot. Is there something special I need to do with the first kernel to see the benefits? I checked and was clocked to 1.1GHz in CM settings.

hmmmm.. that doesn't sound right at all. May i ask which nightly you are using? Right now, i am on nightly 27, and haven't seen anything like that (in my case, it either works, or just boot loops, if i set the clock too high).

[KERNEL][CM7][Froyo] Dalingrin's OC kernel w/fixed IO perf (quadrant) & 1.2Ghz test

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