[Galaxy S II Original Android Development] johnbeetee:
I would like to say thanks to Frozenthunder and Happy_Jack for this clarifying discussion on battery-life tips and would like to add some extra 'food for tought' for all the people expecting super-natural battery life with every new kernel version being released by GM.

With all the progressing kernel-version Gokhan has constantly been changing different parameters and setting ranges (..and with good reasons, I might add based on progressing insight on different feedbacks).

With all of these changes, it would be normal to expect that the overal balance of the kernel will shift a bit between versions meaning: settings that are perfect in one version, may need some tuning and tweaking in the next to get back to a satisfactory state as before (reagrding battery-life vs performance). I've been testing all version along the way, and after careful observations and I can conclude, that with the exception of the kernel-version with BLNWW, mostly all version had in the long run comparable power-consumption (or battery-life if you will...), having done this by factoring out all other powerconsumption like app's, screen consumption etc. ; and this being in the range of 1.1-1.4% drop per hour.

This meaning if you would just charge your phone and leave it lying there, it would last for at least 3 to 4 days, assuming you don't have ant rogue app's eating up your battery in the mean time.

This is by far superior to what stock rom+stock kernel delivers.

Long story short : GM has given us the access to all sorts of parameters and setting you can play with to find the right balance concerning performance vs battery-life, maybe it's a good idea to make use of them.

I'd say : bump=charge your battery to make sure it's really 100%.

have a go at playing with the load_h0, load_l1, different threshold levels and and governors (with nstools you can even tweak some governor's parameter to suit your taste)..do a reboot once in a while..go wild people!

I'm sure you can tweak every version of these kernels to have an acceptable battery-life and suitable performance level. If you still can't reach that state, and you have ruled out the possability of any battery-eating app, then it's reasonable to post a comment concerning battery-life.

Expecting a great ( and even greater than before ) battery-life after just installing a new kernel-version, or after a day or so without having trying out any tweaks, and posting that comment, just isn't fair....

And, by the way, for those interested, siyah_3.2 has a very acceptable battery-life, if properly tweaked (as did rc2,rc1,b8,b7.....etc)

I anticipate some people will be asking me for my settings, but I think the whole point of it all is to try out things yourselves, so don't call me rude if I don't answer....:D:D:D

So, if I had to complain to Gokhan about something, it would be:

Gokhan, please, please, need your help...I don't seem to experience any of the problems listed here in this thread. I'm troubled by that...I think there must be something terribly wrong with my phone:D:D:D

(i hope i don't offend anyone with this remark, I'm aware of the fact that there are people here that are really reporting back actual justified problems, and that's a good thing, so let's keep the spirit of developing alive here..)

cheers!!!