Restricting/ Turning off CPU Cores

Is there any way that i can turn off any number of cores e.g. i want to use 10 cores out of available 32 cores in multicore machine. Is it possible?
Also How can i restrict Java Virtual Machine (JVM) to use only certain number of cores.
Thanks.

You can use psrset to put certain VCPUs into a set that isn't used.
You can use 'prsadm' to disable certain VCPUs.
Just do either of those with the VCPUs that are part of the cores you're interested in. Use 'kstat' cpu information to see which CPUs are part of which cores.
Darren

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Turning Off CPU Cores - Cooler Mac Pro?

Using a Mac Pro in a small room raises the temperature of the room quickly and it is always hot. Does turning off 7 cores (leaving 1 available) using the CPU menubar utility make the computer run cooler? Is there anything else I can do to make the Mac Pro not run as hot?

I hope you didn't think we were being dismissive. I work in a small room on the top floor of a house which even if the house itself and the weather outside are very cool, my Mac room is too hot to stay in. So for me AC and a fan are the only options. The AC for both of us, the fan for the Mac.
I've never heard of someone trying to disable their machine in the way you are wondering about. Perhaps it can be done but just how many CPU's would you have to disable for a heat decrease? And what effect would that have on your overall system, health and performance-wise?
Then what about the heat from your display? That adds in too.
Maybe like me you can't put a regular AC in your window. I had to get something along these lines, which is noisy but works great for my needs:
http://www.nextag.com/everstar-air-conditioner-home-depot/search-html

HT4009 I can not purchase in-app items despite restrictions turned off on my iphone 5s. It refers me tosupport for assistance. PLEASE HELP!

I just upgraded my ipghone to 5s and as a result had to start fresh in iMobsters but can not purchase in-app purchases. I get the following message "Your Purchase Could Not Be Completed For assistance, contact iTunes Support at www.apple.com/support/itunes/ww/.
PLEASE HELP! ! !

You will need to do what it says, contact iTunes Support. These are user-to-user support forums, if you thought you were contacting Apple by posting here. Go here:
http://www.apple.com/emea/support/itunes/contact.html
to contact the iTunes Store.
Regards.

Disable 1 CPU core to save battery power?

Would disabling one of two CPU cores in energy saver make the battery last longer?
Energy saver features no longer make clear what is happening. When using the slower 9400 GPU is the processor also throttled?
It would be nice to be able to see if this is the case and manually throttle the processor if it is not.
Activity monitor should show when cpu's are disabled and or throttled.
CPU Disable/Throttle Settings should include option to come back online if processor use reaches throttle limit for a period of time, or only when certain programs reach the throttle limit for an extended period of time. like photoshop in a large batch operation or final cut in project render.
This request has been sent to Apple Feedback.

The facility to turn off a core is mainly for use by developers who need to test their software under different conditions as well as to be sure the software will work on single-core machines. It's not really intended for use as an energy saving technique.
Remember that if you switch GPUs you must then restart or log out for it to take effect. I'm not sure which of those you are supposed to do since I don't have one of the new machines. I think the info is in your user manual.
Check your Energy Saver preferences to be sure you implement settings that will preserve battery power such as sleeping the drive on idle, putting the screen asleep quickly when not in use - two or three minutes, and putting the computer to sleep after a short period of non-use - five or ten minutes. Enable the option to dim the screen and turn down the screen's backlight as much as you can stand. These all help to extend battery operation.
You really should not need to disable one of the cores as the built-in speedstep should throttle down the processor when idle or when the processor doesn't require full power.

How do you set location based reminders with location restrictions turned on?

I can set location based reminders with location restrictions turned off, but I want them on. Otherwise if I lost or if somebody stole my iPhone they could just turn off the find my iPhone function. Yet if I have location services restricted to prevent this then location based reminders are unavailable. Any help would be appreciated

I can set location based reminders with location restrictions turned off, but I want them on. Otherwise if I lost or if somebody stole my iPhone they could just turn off the find my iPhone function. Yet if I have location services restricted to prevent this then location based reminders are unavailable. Any help would be appreciated

HT4865 How can you use find my iphone or find my friends on a ipod for a kid (daughter) but restrict who can see your personal calenders on their device. I realize you can turn off icloud. If ipod is lost, others can get your data by turning on icloud

I just purchased an ipod for my daughter. Since she is only 7 y/o she cannot create an icloud account. Therefore, I had to use my apple ID to create an icloud account on her ipod. I would like to have find my iphone and friend finder on her ipod for tracking purposes. The only problem is that all of my personal calender, notes, reminders etc get transferred automatically to her ipod which I don't want.
I turned off the icloud calender, notes, reminders etc on her device so that my data doesn't get transferred to her device now. My biggest concern is that if she loses her ipod someone could turn the icloud function back on and automatically get my data.
Is there anyway to be able use the tracking features yet protect my icloud from being turned on by a thief?

Password locks, Restrictions password protected or not anyone who gets your iPod can restore it to Factory Settings/New iPod. This will completely disable Find My iPhone so that the iPod can no longer be tracked. It is not a good idea to not use the lock password, because if someone get your iPod they can see all of your contacts, calendar entries email, email passwords, etc.

I forgot the passcode to turn off restrictions. I have restored my iPad back to the factory settings and then synced it with the latest backup. The restrictions are still on and it is asking for the passcode. Can someone tell me how to get that off.

I forgot the passcode to turn off restrictions. I have restored my iPad back to the factory settings and then synced it with the latest backup. The restrictions are still on and it is asking for the passcode. Can someone tell me how to get that off.

The only option is to wipe the device clean and restore it to factory settings. Hope you have a backup.
Follow the instructions in iOS: How to back up your data and set up your device as a new device http://support.apple.com/kb/HT4137 to restore the device to factory settings.
Once you have setup the device as a new one, you can then sync it back with your iTunes account and all your music, apps, contacts and any other content sync'ed with iTunes will be loaded on the device. Any content that is stored only on the device and not sync'ed with iTunes, like app logins or data, will be lost during this process. Be forewarned that this is a long process and can take a couple of hours or more to complete. This can be painful, but it is necessarily so to prevent users from working around the security settings. After the restore is complete, you can setup a new Restrictions passcode. Make a note of the passcode to avoid this situation in future.
 Cheers, Tom

My restrictions are on and I didn't turn them on. The code is not the one I use to unlock my ipad. How can I find out the code to turn off my restrictions and why did it turn on?

My restrictions are turned on. I didn't turn them on. The only code I've used on my ipad is to unlock it and that code won't work on my restrictions. How do I turn off restrictions and prevent them being turned on again?

The only option is to wipe the device clean and restore it to factory settings. Hope you have a backup.
Follow the instructions in iOS: How to back up your data and set up your device as a new device http://support.apple.com/kb/HT4137 to restore the device to factory settings.
Once you have setup the device as a new one, you can then sync it back with your iTunes account and all your music, apps, contacts and any other content sync'ed with iTunes will be loaded on the device. Any content that is stored only on the device and not sync'ed with iTunes, like app logins or data, will be lost during this process. Be forewarned that this is a long process and can take a couple of hours or more to complete. This can be painful, but it is necessarily so to prevent users from working around the security settings. After the restore is complete, you can setup a new Restrictions passcode. Make a note of the passcode to avoid this situation in future.
 Cheers, Tom

Even with restrictions on location services for icloud turn off

I have been on the forums a b-jillion times looking up this same question. Our phones (hubs and I 4 and 4s) continually turn off the "find my iphone" bit in location services. I have locked it in restrictions after turning it on-passcode locked it. I have tried everything multiple times and yet it still happens on both of our phones, though his more than mine! Now my phone is gone and I put an erase order in almost immediately as it was taken out of my car. It says it will happen the next time it is connected to the internet. I check icloud often...nothing. Then, fifteen days later someone is using my facebook acct! It still doesn't show up on icloud as ever erasing or connecting to the internet!! What the.....?

Hi there I was having the same issues myself an I know it can be a pain because its a real battery drainer. The tip I have that worked for me is I went to location services and one by one I turned off each individual apps location service until the arrow went off so I was able to quickly find the app that was causing the issues (allow about 5 or so seconds between each app after you turn if off) after you find the bad app you can go into that apps settings to try to fix it. Or for me the app never stopped searching my location even with the app fully closed. ( so I deleted the app ) I hope this tip helps out

Why can't I make a kik account? I have IOS6 and higher and my restrictions are turned off! Please help!

Why can't I make a kik account? I have IOS6 and higher and my restrictions are turned off! Please help!

What happens when you try?
See:
iOS: An app you installed unexpectedly quits, stops responding, or won’t open
Contact the developer/go to their support site
https://kikinteractive.zendesk.com/home
Restore from backup. See:
iOS: How to back up
Restore to factory settings/new iPod

I get this message "Cannot save the file as the font "ArmenianLSU-italic" could not be embedded because of licensing restrictions. Turn off the pdf compatibility option and try again. I have this file from when I had CS4. It worked then. I trying to make

I get this message when I am trying to save a file that was done in CS4, now using CS6 "Cannot save the file as the font "ArmenianLSU-italic" could not be embedded because of licensing restrictions. Turn off the pdf compatibility option and try again." Even if I start a new file I unable to save it with this font. I need to use this font.

Then you need to outline all text before savng the PDF.
Make sure you do this on a copy of the file.

HT5594 After updating to iOS7 on my iPhone4 I cannot enable location services. How do I enable location services? I have tried turning off restrictions but that did not work.

After updating to iOS7 on my iPhone 4 I cannot enable location services. How do I enable location services? I have tried turning off restrictions but that did not work.

I finally just resolved this after not being able to enable location services since upagrading to iOS 7. Posting the solution here 'cause I couldn't find it anywhere else.
I enabled Restrictions under Settings > General > Restrictions and created a passcode (I'm not sure if this was part of the solution, but it wasn't enabled for me by default.)
In Restrictions, under Privacy, Location Services was set to "Allow Changes" (This still didn't solve the issue of the greyed-out Location Services switch though - I still couldn't turn it on.)
Also in Restrictions, I also switched "Find My Friends" to "Allow Changes"
Once I did step 3, the switch under Settings > Privacy > Location Services was no longer greyed out and could be switched on.
Hope this helps!

HT1320 how to turn off my restrictions if i for got my passcode?

if i forgot my passcode how can i be able to turn off restrictions?, also how can i reset all my information if my passcode is incorrect? would someone who knows please reply back, thankyou.

Use the mute switch on the side of the phone

How can I turn off me restriction password if I forgot the old one

How can I turn off me restriction password if I forgot the old one

Only by using the correct Apple ID & password.
https://appleid.apple.com

HT204053 how can i turn off restriction on setting

I cant turn off my restiction and i have 10 attempt its my ninth and i dont remember the passcode, in addition to that i am not able to click on the icloud tab, message,twitter, facebook flickr vimeo and itune main account is not mine and I can't sign out, amd theres no more facetime.
What can i do?

I can't reset to factory setting. Need to key in the password for restriction. Should I erase my device in find my phone app, and try to restore from icloud or itune?

Restricting/ Turning off CPU Cores

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