Battery life after disabling one of the cores

After installing the CHUD tool from the installation DVD #1 I tried disabling one of the cores to see if I can increase the battery life, but it seems as soon as I disable one core the frequency jumps to 1.83 GHz and constantly stays at the maximum. So it seems the battery time drops by ~30 min compared to using dual core when at idle. Since this is the battery life during idle, there may be a benefit if one constantly maxes out the frequency in dual core mode when running on battery. I don't max out the CPU frequency most of the time so disabling a core may actually decrease my battery life. Only if I can keep 1.5GHz or below with single core use...

i was also playing around with turning on and off the second CPU after installing CHUD .. i was quite surprised that my battery time is ~30min to ~1hr less when only one CPU is on .. this is completly the oppisite of what i thought would happen. just thought it was kinda interesting.
MB 13" 2.0GHz Intel Core Duo Mac OS X (10.4.6)

Similar Messages

Disabling one of the cores

I remember seeing iMac Core Duo reviews in which the reviewer turned one of the cores off and only used one to run his computer. Is this possible with the Macbook pro?
Macbook Pro 1.83 Mac OS X (10.4.5)

rakghoul: check out the following thread:
http://discussions.apple.com/thread.jspa?threadID=375395&tstart=0

I Have been getting BAD battery life after the ICS UPDATE !! on the DROID RAZAR MAXX have this happen to any one else ??????

i have been getting really bad battery life after install ICS on my droid razar maxx i can only go 1 day and 3 hours where i used to be able to go 2 day easy have this happen to anyone else can someone tell me how i can make my battery life better??????/ and do i need to let my phone go complete dead before fully chargeing it again ??????
before install the ICS update i had 30 percent of battery life remaining so i pluged it in and let charged for a little bit while it updated my phone and ever thing after it updated i unplug my phone and started playing on my phone to see what ICS was all about but when it got to 15 and said " connect to your changer so i did !!!!! should i haved let my phone going complete dead since i unplug without it fully changer or does it matter ?????????????? if someone could please help me !!!!:)

What was your battery reading right after the update when you unplugged the phone? I have never let my Maxx drain further than 20% battery ever before I charge it. Yesterday after the update I also played more with the phone trying to learn the OS, as did most everyone on this forum. Give it a few days of your normal use before you decide your battery life has decreased. I took my phone off charger today at noon, it was 100%, and now it's 80%, with about 30 min talk time, and mostly standby. that's about normal batt life for me, maybe a little better than before the update. I'm still going to watch it for a few days before I make a conclusion about battery life.

What is going on the my battery life, after installing Mavericks, what a drain!!!

What is going on the my battery life, after installing Mavericks, what a drain!!!

You can try resetting the SMC and NVRAM.
http://support.apple.com/kb/ht1379
http://support.apple.com/kb/ht3964
You can also try running the short and/or extended Apple hardware test by holding D button while booting up and then following the instructions.
http://support.apple.com/kb/ht1509
If that doesn't work (seems not extremely likely that it will) you can backup and try reinstalling a fresh OS.
If that still doesn't work maybe the battery is bad. If you don't feel like messing with all that just take it to Apple. They should have a test they can perform.

What is the standard battery life after charge

What is the standard battery life after charge?

About 1,000 full charge cycles. Mac notebooks- Determining battery cycle count - Apple Support.

Wireless driver triggers warm/hot macbook and low battery life after OS 10.8 mountain lion upgrade

Hello frustrated Macbook users.
I have tried to get help on other Apple discussions but no one seems to want to help, they aren't actually reading my posts, or they hate me for some reason.
No matter.
If you have a warm Macbook that has 2.5 hours of battery life where you used to have 4 or more, please do this simple procedure and write the result below.
Turn OFF Airport wireless networking
Perform an SMC reset (Power Manager)
Connect an ethernet cable and use your Macbook normally. (but do NOT turn on wireless networking again)
How is your battery life after doing this?
I have a user over here who reclaimed decent battery performance if he doesn't use his Airport wireless.
I need confirmation.
If so, I may get a USB wireless adapter and see if the battery life stays good.
Bonus points: If you have a Mac compatible USB wireless adapter and got good results by turning off the built-in adapter, want to test it for me and report the results?
Thanks and good luck!
meta: short time install snow leopard hours overheating shorter shortened lower

UPDATE:
Problem persists when using Recovery Partition.
Chance sthat it is third party softwae or updates is more or less eliminated.
Update 10.8.3 beta fixed the problem for one lucky early adopter.
Hypothesis: New battery charging algorithms programmed into Mountain Lion OS10.8 triggered problems from design flaws that were NOT an issue for OS 10.7 and before.
Battery replacements were successful where the replacement battery was built within tolerances that did not fail under 10.8's new charging algorithms. Other bateries did not meet those tolerances so you would get spotty results from battery replacements. It worked sometimes, but not always.
OS 10.8.3 may have adjusted these algorithms to be less demanding on the features of the battery that were failing.
Official word from Apple is 'mum'.

HOT iPhone and poor battery life after 1.14 to 2.1 firmware upgrade

I recently upgraded my Original iPhone's firmware from 1.1.4 to 2.1. I did a restore rather than a simple upgrade (backup, restore to version 2.1, restore backup).
After the restore I noticed that my battery life was terrible and that the phone would get very hot (near the top of the phone) sometimes, as if the battery was discharging very quickly. I read a few posts that suggested Push might be the culprit, so I turned Push off (I'm not using MobileMe), and this seemed to solve the problem. However...
I now notice that whenever I play Apple's Texas Holdem from the App Store or play YouTube clips the same phenomena occurs, and that nothing short of a hard reset will stop it.
Oddly, if I refrain from playing YouTube clips or playing Texas Holdem battery life is much better than before the firmware upgrade.
In short, it looks as though there is something wrong with the 2.1 firmware. I see sporadic accounts of similar behavior on the various discussion boards, so I know I'm not alone.
Is there a fix for this behavior?
Thanks in advance...
James

Sounds more like an app stuck processing that shouldn't be....does happen from time to time. Behing hot means it is constantly processing.
To fix:
Try a reboot (described below).
Think of it this way, the iPhone is more of a computer than a phone. It suffers from being a new OS and nobody can deny there are not bugs and memory leaks. The longer left running, the more things start to fail or slow down (I have had the iPhone since day one of original phone and I am just speaking from my experience). Thus I equate it to like when Windows95 came out...not sure of your age or if you remember those days...but back then it was a running joke of how many days you can keep Windows 95 running before you had to reboot. I am sorry to say but the iPhone is the same way right now (but getting better with a few hiccups back during the 2.0 release). So for me, I reboot daily when I leave in the morning and take it off the charger. By doing so I rarely see any lag or problems.
A reset/reboot is:
Go to Home Screen
Press and Hold Home Button
Keep holding and press and hold Lock Button
Keep holding Both
You will see Slide to Turn Off (Don't let go to slide, just keep holding)
The phone will turn off (in time, but screen will look like it has some white lines)
Keep Holding
When you see the Apple Logo, you can let go.
Turning off via the Slide to Turn off while good and fine to turn off, is more like the Sleep Mode on a computer. Thus any locked up issues in memory remain when you turn back on. A reboot as described is like doing a real Turn off and Turn On on a computer.
You may also wish to read this tread about reboots and odd application behavior.
http://discussions.apple.com/message.jspa?messageID=5851978#5851978
For me, 2.1 works great.

HT1414 anyone noticing a decline in battery life after downloading ios7????

anyone noticing a decline in battery life after downloading ios7?

I have an iphone 5. Ios 7 is a disaster for battery life! It used to drain about 1% every two hours, 5% over night roughly (not being used). Now it is draining at double the rate. It drained 10% over night and it isn't even doing a thing. I think something is clocking up usage when it's idle.
Screen brightness is minimal.
Background app updating is restricted to one app which isn't running the majority of the time.
Dynamic wall paper and other stupid stuff is all turned off.
I can't turn off the stupid clock animation. I wonder if working out how that is displayed is the issue???
It shouldn't be draining at 1% per hour when not even being used.
Favourite locations is still switched on.
Is there any benefit in turning off wifi and using 3g data only? I had the issue before that having 3g enabled meant double the battery drain so I only used it when I was out.
Ipad mini seems fine though. Battery life is same as last ios6 ie about 14-16 hours use.
I now have caret running to find out what the rogue thing is. The majority of the time few apps are running at all.
My general average usage is 12-15% per day if lightly used and 25-45% if it is moderately used. Now the phone is draining at 25-33% a day when lightly used!
Beats me why an ipad mini which is advertised at up to 10 hours on wifi nearly doubles that and the iphone which is advertised at the same rarely reaches it. I usually get 8 hours of active use if I'm lucky. Now it's more like 5-6 which is hopeless.

MBP 13" Aug09, lost 2 hours battery life after upgrading to SL

Hi, my Macbook Pro bought on Aug 09 lost 2 hours of battery life after an upgrade from Leopard to Snow Leopard.
I brought it to the Apple service center where they checked the battery and they said that the battery has no problem.
Then, they suggest me to format my mac and reinstall Snow Leopard on a clean disk which i did without any success.
So now, my battery still hold 100% of it's original capacity (over 5450mAh) but my battery died before 3 hours with 0 program running !? (it used to last over 5.5 hours while running Leopard)
What's the matter with my battery.
And of course, i tried all the calibration before i post this topic.
If anyone can help now, it would be so great ! can't expect anything from Apple as they consider my battery as new.
Thanks !
Message was edited by: jay77hkbr

I too have been experiencing worse battery life.
I used to have about 3.5 hours on my now one year old Unibody MBP.
After SL (and switch from original 5400rpm to seagate momentus 7200rpm) I'm now down at about 2 hours.
Wifi enabled
Bluetooth enabled
Brightness around 80%
2 hours is very little compared to the promised 5 hours.
My battery stats:
Health: 94%
Cycles: 112
Full charge: 4344mAh
Feels like I'm on an old lousy PC laptop again.

Is it normal for iPhone 4S to lose 1% battery life after 2-3 minutes of using?

Is it normal for iPhone 4S to lose 1% battery life after 2-3 minutes of using? So in 2 hours, 24 minutes usage and 15 hours, 17 minutes in standby mode, the battery became 68%...

sounds plausable
also you can't really 100% trust it's batt% batteries are an analog technology the only thing the iphone can judge how much batt is left is by measuing amp amount the batt is producing and then over time estimating how long before it's zore
but anyway Its not wise to not put a battery for charge before bed when it's 12%
if your reason is you think it's good for batteries to be empty before charging then you believe in a myth and in the process damaging the battery in your ios device

HT1476 apple 5 phone, battery life decreased within one year of purchase,only half day or little more it works

Apple I phone 5 , battery life decreased within one year of purchase, it works for half day, charger is also giving some trouble as oly doing some hit and trial ,it starts charging,

I had similar issues with my iPhone 5. For the four or five most recent charging cycles it went from 100% down to around 30% normally with good standby and usage times. Then, start a call or open an app and bingo, it then would show 4% or 7%, sometimes giving me the 10% warning, other times not.
So yesterday I took it to Genius Bar; they tested it and immediately said it was a bad battery...replaced for free since I'm a month away from end of warranty.

Hot battery and short battery life after download of Mountain Lion.

Hot battery and short battery life after download of Mountain Lion. Any suggestions?

As in, shortly after install?
Note after you install Mountain Lion it's likely that the Spotlight index will be rebuilt. This will take some time and the machine will run hot. After this completes, which could take 1-2 hours, things should return more to normal.
If they don't, I suggest running Activity Monitor and seeing if you can trace what is eating up CPU cycles.

I updated my ipad from IOS 5 to IOS 8. All games and apps that I downloaded was deleted. What can I do to return them back, even after downloading one of the games He deleded all the steps I went through and I need to start all over again

I updated my ipad 2from IOS 5 to IOS 8. All games and apps that I downloaded was deleted. What can I do to return them back, even after downloading one of the games He deleded all the steps I went through and I need to start all over again

iCloud: Restore or set up your iOS device from iCloud
Or from iTunes http://www.iphonefaq.org/archives/971992

Need to disable one of the select-options in dynamic selection screen

Hi,
we have copied the Standard program: RFDOPR00 into Z, my requirement is to disable one of the select-options in dynamic selection screen for ex: Reason code(User shouldnot able to enter anything in it).
Can anyone please tell me the procedure to do it... I had tried using at selection-screen but it doesnt work as it in 'LOOP AT SCREEN', i am not able to capture the Parameter name(screen-name).
Thanks,
Ravi

Hi,
Get inside your selection screen, by executing your program.
Now type /h in the field where you enter transaction code and press enter.
Now again press enter, this will take you debugger starting from your Selection screen.
You might be knowing this, still if you are not aware of this, this might be a valuable tip.
From here , you can trace your Parameter name.

How can i maximize my battery life after its been damaged

how can i maximize my battery life after its been damaged?

Just like it had nevr been damaged; fully dischagre and charge monthly, minimize battery drain so you minimize charge/dischare cycles.

Battery life after disabling one of the cores

Similar Messages

Maybe you are looking for