Solution of as influenced by identityservices battery Drain / Messages

iOS9 battery draining - in regards to the identityservices and Messages - affects IPhone, look at and OS X Devices

Some people have problems with the battery drain on their iOS devices. We have two sets of iPhone (each a 6s +) / Watch combinations - each running the latest versions - 9.3.1 and 2.2 respectively. On watchmaking and the iPhone battery drain has been noticed about five days after the release of the 9.3.1. I took the devices in the genius bar - they have worked on them for three hours - have many things to watch - restored like new. They also have to reset all the settings on the IPhone - all to nothing does not. Both devices had abnormal battery drain. They agreed to leave the ticket open for problems not solved.

I found a post that suggested the signing of all services. I tried on the first combination of iPhone and watch. It seemed clear the issue. I tried it a day later on the second phone - battery drain still very badly on the second set - it did not work. Tests showed that the watch itself (corresponding iPhone not tuned on) not not drain - drain you only while the iPhone is in. And the iPhone itself drained.

Next step: I ran Xcode instruments on iPhone still questions. I ran the monitor of activity several times for different periods. Run the latest showed the system task: identityservices consuming more than 5 HOURS CPU time in a period of 9 hours sleep. Safe to say that the task system was draining the battery. The iOS log lists the iPhone that task in the form of your CPU time excessive - and that the thread, the cause is linked to a message store. I did more research and found that this system task seems to have created problems of battery in another version of the IOS too.

I also found that the OS X version of this task (identityservicesd) created a countless number of error messages in the console log on two of our OS X devices (iMac and MacBook). He also ran the battery down on the laptop - quickly. Weapons of this information I instrumented again iPhone. I started to stop every iOS device - (two iPhones and two iPads) one by one - when three of these aircraft have been closed the identityservices task fell to minimal use of CPU - is no longer than 50-90-105%. In addition the corresponding task on the OS X iMac and MacBook stopped spitting out error messages.

I rebooted each iOS a device once they have been fully charged. The task of "runaway" system (identityservices) is back to very low use. On the iPhones battery life now - after being in mode standby for five hours - very low consumption 'use '. Not doing much with phones as five hours. Previously, its use was almost equal to the wait time - it was a low ratio. Now, it's an a very high ratio - about a 1 to 10. For those who like % - after five hours, it is 97%.

Regard to watches - we turn those and soon back on IPhones and see how they do. I'll post a report on those later in the day.

UPDATE: watches are now running to the normal battery level.

Error messages identityservicesd on OS X machines indicated that the error was associated with a particular 'ID of Machine' (not the same as the serial number appearing on). I'll see if I can track this number down to a specific device. I don't know how to find the Machine ID on the devices iOS - or watches also. Perhaps one of the devices was a problem - most likely turn off all devices and caches of posts offset by a reboot.

I think that some people may have the same problem - but perhaps do not realize it because they are used for a certain battery life level - or maybe they don't have it not as bad. In any case, I don't think that this particular system should continue to work and consume high CPU when there is a problem.

I hope this note helps people who seem to have battery problems. This isn't for everyone - I consider the following to determine if she could help.

  • Check your iOS log (settings |) Privacy | Diagnostics & use) for an entry that starts with: ExcResource_identityservicesd-2016-MM-DD...
  • If you have one or more of the above - the chances are that this may help you
  • Turning off all IOS devices (and maybe your OS X devices too - not sure if this is necessary) and feed them back on one by one.
  • Simple - for us it was very efficient
  • My concern - this can happen again if the tasks system is not changed.

My plan is to submit a bug report to Apple to document this behavior as son

For reference, here is an example of messages that have been continuously (~ 5/s) being produced in the log of OS X console during periods of exhausting high battery.

APR 17 20:31:20 identityservicesd XXX - MBP [288]: [warning] received the message ID is empty, does not produce B4DAF3C4-515F-477B-943F-6CF3B92643BB com.apple.private.alloy.thumper.keys
APR 17 20:31:20 identityservicesd XXX - MBP [288]: [warning] No. broadcast you want to order 227 subject com.apple.private.alloy.thumper.keys - delete message with the B4DAF3C4-515F-477B-943F-6CF3B92643BB guid
APR 17 20:31:41 identityservicesd XXX - MBP [288]: [warning] received the message ID is empty, does not produce 9542E416-5CC5-4377-B3D6-BB1444BD7FBC com.apple.private.alloy.thumper.keys
APR 17 20:31:41 identityservicesd XXX - MBP [288]: [warning] No. broadcast you want to order 227 subject com.apple.private.alloy.thumper.keys - deleting message with guid 9542E416-5CC5-4377-B3D6-BB1444BD7FBC
APR 17 20:31:41 identityservicesd XXX - MBP [288]: [warning] received the message ID is empty, does not produce F9CE360D-9705-4DE6-8E5C-EBB930BCD62D com.apple.private.alloy.thumper.keys
APR 17 20:31:41 identityservicesd XXX - MBP [288]: [warning] No. broadcast you want to order 227 subject com.apple.private.alloy.thumper.keys - delete message with the F9CE360D-9705-4DE6-8E5C-EBB930BCD62D guid

I have this same problem on my iPhone running iOS 9.3.1 6. I have not noticed any additional drain on my Apple Watch if. My iPhone battery life was fine before today where he went from 100% to 0% after having not used 8 1/2 hours. The only thing I did differently from any other day, it's Add airtime to my phone (I use Tracfone prepaid service). But this type of battery drain is not never happened before.

It doesn't look like my iPad 2 Air, MBPr 2014, and iMac 2013 (all updates running) seem to have no effect on my iPhone (and vice versa). My Apple Watch seems to have an effect minor on it, where the identityservices process will draw upward when the watch is connected at the start and then things will calm down back with occasional changes, but nothing drastic or "abnormal" (compared to the iPad).

One thing I noticed is that my old Apple devices (a 2009 iMac and a MacBook Pro 2008) send the process identityservices on my iPhone skyrocket as soon as they are turned on and connected to the wifi, and then once they are off the process comes back down. And with the iPhone locked, connected to Wifi with Bluetooth, when you are connected to the activity of Instruments monitor. Turn my iPhone market again (several times) has not changed anything. Even after the phone is dead earlier battery drain is always the same.

Thanks for all your advice! I'll try and see if I can get it working again "normal."

I'll also try to restore my iPhone and set up as nine (do not restore backup) since I restored recently to go to a backup and thought he could have problems with the backup that I restored from the phone display incorrect numbers for the size of the backups and what was actually be saved. I will update this post to see if things change after restoring my iPhone.

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