XXJVK... First rom to use 'on demand' CPU governing by default? - Galaxy S I9000 Q&A, Help & Troubleshooting

Noticed something interesting.
Using os monitor app, it tells me that this new rom uses on demand by default. Previous i9000 roms seemed to react badly to this setting and only really worked well with conservative mode.
Could someone enlighten me as to what this means comparing older roms set to conservative with jvk?
Stock XXJVK, Voodoo GB hack Kernel, JVE GB Modem

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setCPU now working with Nexus S... Captivate support coming?

I saw that they have SetCPU working with the Hummingbird in the Nexus S; I was wondering if this means there is a possibility that SetCPU overclock support may be coming for the Captivate as well?
it must be supported by kernel...
It already works?? But most of us use voltage control and you have to flash the right kernel
Sent from my SGH-I897 using XDA App
All the OC-supporting kernels I saw said not to use SetCPU...
Thread moved to Q&A.
Only person that would know that answer for sure would be supercurio as he's doing the kernel for both the i9000 and the Captivate.
I'd suggest going to his i9000 thread or checking his twitter to find out.
set cpu works but is not recomended with i9000 kernels though i dont know why. on the threads for unhelpfuls kernels there was talk about it messing up the interneal clock causing the time on texts to be off but that happened to me with the stock kernel and no use of set cpu when using set cpu the problem was no better or worse, therewas also non specific talk of it not playing nice with our phones.
i havent tried it on an i9000 kernel because there is no use for it. the voltage control app is capable of setting the max clock speed. set cpu could still be used for profiles i guess but i never saw the need for a profile, if you are running such a fine line that stability is effected by heat and charging status you might want a little less overclock. over/under clocking has very little effect on battery life do to cpu scaling. under clocking just makes it take longer to get tasks done keeping the cpu from sleeping, really not as big an effect on battery life as you'd expect. so that leaves you with the governor settings which our kernels dont support very well, you can try different kernels with different governor settings built in. perhaps the aosp kernels do better. i dont know becasue there are too many problems with cyanogen mod and the gingerbread port right now.
As mentioned it has worked for some time. But we've been recommended not to use it. I'd love to know why just out of curiousity.

[Q] Benchmark vs stock

Currently, I have a Captivate, bone stock with the exception of root and oclf, recently upgraded to 2.2 (att download kb1 version). After running quadrant, it scored 1885. After trying a few other combos of modems/kernels, i still have not surpassed, or even came close to the previous number. Is this normal, or have somehow been gifted with a SuperCaptivate?
That's pretty high for a stock ROM, even with a modded kernel. 1400-1500 is more the norm. There's a Quadrant thread on the 1st page you can look at to see what others are getting.
perfectly normal, not to many users running the stock kernels with oclf anymore. froyo doesnt see the boost that 2.1 got with a ext loopback, there are some changes to the way things are mounted. the quadrant scores with oclf are exagerated either way but 2.1 is more exagerated. i was getting scores near 2600 with my cpu and gpu overclocked and undervolted with oclf. that's better than an atrix but it's not a reliable number.
i dont feel that composite scores of any kind are ever real numbers. you really want to compare individual parts of the system and use judement to see if it is what you really need.
if you dont want to flash a rom i understand that, too much backup and restore and you always loose data like call history and old text messages. sometimes contacts if they are not correctly synced to the gogle account. but it is definately a good idea to try a kernel, there is a kb1 kernel available from supercerio that will not have any ill effects to the phone that i know of, it has oc/uv and voodoo enhancements. your may get lower quadrant scores but i assure you that it is not a reliable measure of performance.
I have thought about different rom. But i did benchmark froyo w/out root and oclf right after 2.2 upgrade,andit scored about 900. Thouhgt about trying the torch rom that i saw here, but i would personally like to use oclf instead of voodoo lagfix.
On different note, does anyone know if KB1 modem is compatible with I9000 kernel?

[Q] Lag in jpy voodoo vs jvs vs cm7

Hi I'm on a JPY+voodoo. Pretty happy but one complaint about lag. Even with voodoo on when I open several apps and then go back to contacts, or SMS, it takes several seconds to open them (black window). I guess it is just the time spent to empty and refill RAM with new app. My question is: Is there the stock SGS GB free from this lag/delay? JVS, JVQ or JVR I mean... Are there CM7/MIUI free from it? Just to make sure that it is worthwile to change now without waiting a more stable version...
It's a bit riskier, but removing journal from ext4 made my phone a lot faster (on jvr and now jvs). booting the phone and loading apps especially seems faster.
Secondly, talon and galaxian are the best kernels. Personally i prefer talon for voodoo color and also it seems to run smoother with the conservative governor.
Another thing you can do is to increase the minimum frequency of your phone (ie. I did mine from 100 to 200mhz using tegrak overclock). this means faster scaling due to less steps (especially on conservative governor).
Finally, bigmem kernels may also help your problem by giving you more free ram. I use the latest talon bigmem kernel (gives u an extra 10-15mb ram). You do sacrifice HD video recording but I think its worth it if u dont do much video recording (you can always temporarily flash back another kernel on the odd occasion that you need it).
Oh and one more thing. Delete all the apps you don't use from your phone (especially system/apps)
EDIT: seems i went a bit off topic. I have heard that CM7 is faster than stock, but it seems to sacrifice battery life a little (not sure if this is still the case). And I think all stock roms have a little bit of lag, at least after a while. I think JVR/JVS are significantly better than the previous gingerbread roms (i have tried a few), but rom/kernel customisation is still important for the best user experience.
oswade said:
It's a bit riskier, but removing journal from ext4 made my phone a lot faster (on jvr and now jvs). booting the phone and loading apps especially seems faster.
Secondly, talon and galaxian are the best kernels. Personally i prefer talon for voodoo color and also it seems to run smoother with the conservative governor.
Another thing you can do is to increase the minimum frequency of your phone (ie. I did mine from 100 to 200mhz using tegrak overclock). this means faster scaling due to less steps (especially on conservative governor).
Finally, bigmem kernels may also help your problem by giving you more free ram. I use the latest talon bigmem kernel (gives u an extra 10-15mb ram). You do sacrifice HD video recording but I think its worth it if u dont do much video recording (you can always temporarily flash back another kernel on the odd occasion that you need it).
Oh and one more thing. Delete all the apps you don't use from your phone (especially system/apps)
EDIT: seems i went a bit off topic. I have heard that CM7 is faster than stock, but it seems to sacrifice battery life a little (not sure if this is still the case). And I think all stock roms have a little bit of lag, at least after a while. I think JVR/JVS are significantly better than the previous gingerbread roms (i have tried a few), but rom/kernel customisation is still important for the best user experience.
Click to expand...
Click to collapse
It's really weird how you said "stock roms lag". As far as I know, no other ROM besides samsung and iOS has smooth web browser scrolling

[Q] video freezing often leading to reset

Running stock gingerbread xwjp9 with overcome 4.0.0 kernel. I am running setcpu and have tried up to 1200 undervolted by -75. Everything is stable works well except video.
Some streaming apps fail and cause a reset. Also now starting to fail on running normaql avi's, mkv,s etc.
I have tried different governers and different video players, but it runs for about 5-15 mins then bombs.
Any ideas?
cheers
I think u have set up correctly the voltages of your version, or perhaps you need to update the kernel, is better and simply that way. search if your kernel is compatibly with your galaxy tab.
because the voltages of the overclocking are not correctly your galaxy tab dont work property and when u see multimedia files they top the mhz and they reset for support, and make dont up more the temperature of the core and make safe way. is like a computer when the temperature of the cpu is to high they reset for warning.
Try to found a better kernel, because the kernel make the paremters of the function of the o/c, try to found one in humberos.com.br and for your correctly firmware version
ii hope i help u. y have the same problem in the galaxy tab p1000n and they fix them in that way

[Q]the cpu ignores max/min values

Hello all,
so in the effort to make my O4X last like a normal smartphone when not in use iv'e rooted it,unlocked the b/l and flashed custom kerenal.
i did managed to go from an avg. -10%/hr battery drain to 5%/hr but still even if i dont use the phone it will go down alot.
i've tried setcpu,trickster,no frills cpu and none of them could really keep the cpu in the freq. i want. it shos sucess in appling the values but then it jumps below and above the value's iv'e set.
what can be done?
thank you
Have you tried no-frills cpu setting to prevent system for making changes to the cpu frequences?
Yes.. Still not sticking and ignore the freq. I set
@genia.m which kernel are you using ?
Currently I'm on the latest Werewolfjb.
It happened with stock kerenal too..
Might be the rom's fault?
Well it can be, I believe it is the kernel but still, try to change your rom to one which has been reported to not having the baseband wakelock and similar wakelocks . It is the Nvidia Tegra 3 which overrides the definitions and sets them to default. It used to happen with me in stock and on cm too, but I changed to another stock rom , a modified one, and is working like a charm, no stupid wakes.
Try and post the result if you want !

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