IPhone iOS 4 high CPU bug and work around

Using activity monitor app, frequently I notice that the System CPU usage won't drop below 10% with total usage ranging from 15 to 20% (idle never goes above 90%). Closing apps doesn't recover from this state, neither does turning off services, WiFi or 3G. The only thing that works (other than restarting the phone) is to turn on airplane mode for about 10 seconds and then turn it off. The System CPU usage will still be high while in airplane mode, but will drop down to about 2% (6% total) after turning airplane mode off and idle will stay above 90% at that point.
I've tried all combinations of turning WiFi, 3G, location services, etc off and on, but only turning airplane mode on and off works.
I've done a full restore and it still happens. I have no idea what the trigger is. It doesn't seem to be based on what apps are or were running because I've had it happen overnight when not running any apps. It might be based on mail or something, but killing the mail app doesn't fix it. Only turning airplane mode on and off does.
Letting the System CPU hover around 10% instead of 3% causes a noticeable drop in battery life. This needs to be fixed.

Hello,
I have the same problem, and it was the same even for previous versions of iPhone OS. I don't think it's a time zone issue, as I am living in Norway and the reports here are the same from various locations.
However, I think I might have found a workaround for this problem. Normally I have my mail, contacts and calendar synced via Exchange. When I in addition to syncing with Exchange select "Sync contacts with Outlook" in the "info" tab in iTunes on my computer, the dates appear to be transferred correctly. But then again, this gives me several contact groups on my iPhone, whilst I really only want and need one group, the Exchange contacts. Anyway, the contacts appear only once when I select the "group" all contacts on my iPhone.
Hope this can be of any help until the bug is fixed.

Similar Messages

High CPU load and com.apple.ImageCaptureExtension2 crash after upgrade

After upgrading my Macbook Air from Lion to Mountain Lion, the system has a very high cpu load, and the crash reporter is the process that causes thee high load. In the error log I see this entry several times per second:
17.08.12 12:58:46,011 ReportCrash[5998]: com.apple.message.domain: com.apple.crashreporter.writereport.crash
com.apple.message.signature: Image Capture Extension
com.apple.message.signature2: com.apple.ImageCaptureExtension2 ||| 8.0 (8.0)
com.apple.message.signature3: 03A96CBDA3C85A114383537BFC5C8999
com.apple.message.result: NO
com.apple.message.summarize: YES
I investigated a bit more and recovered, that it has something to do with the printer drivers. When I remove all printers from setting, everything is fine. As soon as I add a printer (Brother MFC 9440CN printer/scanner, printer driver provided by Mountan Lion), the crash reporter starts it's work and the error log is full of those entries.
Any suggestions?
Thanks in advance,
Marcus

I did more exploration and found the cause of this, but I don't know how to fix it:
I removed all Brother and Lexmark printer drivers and rebooted (and also tested with a virtual machine using 10.8.0 as guest os that never had any printer installed). As soon as I enter the printer settings and press the "+", the crashes begin, so it looked like the bonjour one of the printers announcing themselves via Bonjour were causing this.
When watching a picture in the preview app the same happend. We have two multi function printers in our network, the already mentioned brother printer and a Lexmark X204N. Switching off the Lexmark (which wasn't installed on my Mac) solved the problem. Switching off the printer is no solution in our office (it's our fax device and main printer), but switching off mDNS on the Lexmark also solved it. But this can only be a workaround.
Is this a known problem with Lexmark devices and Mountain Lion (it works fine with machines using Lion)? Are there any fixes known? It's just the Lexmark device announing itself via Bonjour that causes trouble, even if the driver is not installed.

IcedTea High CPU usage and multiple jobs created

High CPU usage and multiple jobs created while streaming data via a java applet from a secure/certified website. CPU usage is normal for a few minutes then suddenly jobs multiply and CPU usage climbs on one of the jobs.
Jobs with the following command begin to multiply in my job queue with one job showing CPU usage at 368% and staying resident in memory (yeah, a long one):
/usr/lib/jvm/java-7-openjdk/jre/bin/java -Xbootclasspath/a:/usr/share/icedtea-web/netx.jar:/usr/share/icedtea-web/plugin.jar:/usr/share/java/js.jar: -classpath /usr/lib/jvm/java-7-openjdk/jre/lib/rt.jar sun.applet.PluginMain /run/user/1000/icedteaplugin-tbattist-SZ3xKO/7160-icedteanp-plugin-to-appletviewer /run/user/1000/icedteaplugin-tbattist-SZ3xKO/7160-icedteanp-appletviewer-to-plugin /run/user/1000/icedteaplugin-tbattist-SZ3xKO/7160-icedteanp-plugin-debug-to-appletviewer
I have the following java packages installed on my system:
local/icedtea-web-java7 1.5-1
local/jdk7-openjdk 7.u51_2.4.6-1
local/jre7-openjdk 7.u51_2.4.6-1
local/jre7-openjdk-headless 7.u51_2.4.6-1
I also get the following message in my system log when starting to stream:
Apr 11 12:26:18 saturn logger[7872]: IcedTea-Web java error manual log:
Apr 11 12:26:18 saturn logger[7873]: Application title was not found in manifest. Check with application vendor
Apr 11 12:26:37 saturn logger[7883]: IcedTea-Web java error - for more info see itweb-settings debug options or console. See http://icedtea.classpath.org/wiki/IcedTea-Web#Filing_bugs for help.
Anybody having this issue or clue on what to do? I am wondering if recent changes to openssl (heartbleed) might have java change ramifications? Should I submit bug to Icedtea?
FYI - My system:
Processor : 4x AMD A8-3870 APU with Radeon(tm) HD Graphics
Memory : 7646MB (2518MB used)
Operating System : Arch Linux 3.14.0-4
OpenGL Renderer : Gallium 0.4 on AMD SUMO
X11 Vendor : The X.Org Foundation

...further research and learning.
Here is a good tutorial on Java. Evidently, what I called "jobs" is referred to as processes and threads in this tutorial. The tutorial states that multithreaded execution is an essential feature of the Java platform which explains the avalanche of threads I observe. However, I am still stumped at what causes the avalanche of threads and excessive CPU consumption for such a mediocre task. Also the system log says that IcedTea has an error stating "Application title was not found in manifest. Check with application vendor". I interpret this to mean that IcedTea does not recognized some application. What application? .....the applet?

HT1414 i am on iTunes 11.4.04. My iphone iOs is 6.1.3 and has 14 GB. I am trying to backup on my iMac iOs 10.6.8 and it has 113.GB free, But I am getting error messgae that computer doesnt have enough free space

i am on iTunes 11.4.04. My iphone iOs is 6.1.3 and has 14 GB. I am trying to backup on my iMac iOs 10.6.8 and it has 113 GB free, But I am getting error messgae that computer doesnt have enough free space

Settings > General > Reset > Reset Network Settings.
Basic troubleshooting is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.
If the issue continues, contact the carrier to troubleshoot the network connectivity issues.

I was updating my iphone ios suddenly battery was drain and itunes logo appears, how can i recover my file back? does anyone can help me...

i was updating my iphone ios suddenly battery was drain and itunes logo appears, how can i recover my file back? does anyone can help me...

Was your phone jailbroken?

Permanent high CPU load and timeouts in communication channels

Dear Colleagues,
we've a strange issue since last week. At first we had an problem with a redirect to the cytrix online booking engine within the travel management application of our SAP NW Portal. There is a redirect.jsp file deployed in our PI system that connects to cytrix and passes the URL with session link and session cookie to our Portal. We fixed that issue by restarting the PI system.
We have a PI 7.0 stack 23 on HP-UX.
After restarting we found that we've got a very high CPU load (about 75% overall CPU, or 300% at 4 CPUs) probably caused by very frequent (3 per second) minor garbage collection runs (as seen in GC.log).
On friday we had timeouts within one of our communication channels in the PI system.
We changed the heap size from 2GB to 3GB and the new generation from 341MB to 768MB and restarted the PI system. But after a few ours the system uses 75% RAM of the CPU high CPU load and the GC runs are still the same.
This is a short excerpt of our GC.log:
52645.608: [GC 52645.608: [DefNew: 395326K->2003K(589824K), 0.0334788 secs] 1628688K->1235472K(2949120K), 0.0335882 secs]
52646.071: [GC 52646.072: [DefNew: 395219K->2072K(589824K), 0.0351584 secs] 1628688K->1235680K(2949120K), 0.0353002 secs]
52646.665: [GC 52646.665: [DefNew: 395288K->2173K(589824K), 0.0371023 secs] 1628896K->1236058K(2949120K), 0.0372198 secs]
52647.022: [GC 52647.022: [DefNew: 395389K->1969K(589824K), 0.0352723 secs] 1629274K->1235991K(2949120K), 0.0353865 secs]
52647.368: [GC 52647.368: [DefNew: 395185K->1885K(589824K), 0.0346132 secs] 1629207K->1235944K(2949120K), 0.0347310 secs]
52647.804: [GC 52647.804: [DefNew: 395101K->2069K(589824K), 0.0357804 secs] 1629160K->1236129K(2949120K), 0.0358980 secs]
52648.327: [GC 52648.328: [DefNew: 395285K->2285K(589824K), 0.0380093 secs] 1629345K->1236369K(2949120K), 0.0381374 secs]
52648.737: [GC 52648.738: [DefNew: 395501K->2282K(589824K), 0.0365516 secs] 1629585K->1236400K(2949120K), 0.0366749 secs]
52649.125: [GC 52649.125: [DefNew: 395498K->2435K(589824K), 0.0352310 secs] 1629616K->1236589K(2949120K), 0.0353407 secs]
52649.462: [GC 52649.462: [DefNew: 395651K->2436K(589824K), 0.0361161 secs] 1629805K->1236654K(2949120K), 0.0362322 secs]
52649.840: [GC 52649.840: [DefNew: 395652K->2322K(589824K), 0.0341640 secs] 1629870K->1236539K(2949120K), 0.0342721 secs]
Does anyone know what can cause the high load?
Is the frequency of the GC runs normal?
Can the timeouts be connected to the high CPU load?
The error ony occurs on our productive system.
I'd appriciate your help very much.
Kind regards,
Paul

hi Paul,
I believe an issue like that needs to be done onsite and not via a forum
as it probably requires doing lots of checks/tests
my suggestion would be to get a PI consultant expert with basis experience onsite or do it via OSS with SAP
Regards,
Michal Krawczyk

Syslogd makes high CPU Load and standby mode doesn´t work.

After updating to Leopard I see high CPU Load caused by syslogd daemon(40%-80%) and my MacBook has problems with standby mode. After stopping the white LED lights and CPU fan speeds up. Is there any chance to fix these problems?

OK.. here's where I'm at with troubleshooting this. As I said before, for ME it occurred simultaneous to a low or out of memory situation. I don't know if syslogd was using my the ram, or if the low ram was a symptom of an issue that syslogd was getting caught up in reporting... but the system log file had tens of THOUSANDS of out of memory errors listed. Almost all were from dashboard.
So... I've done the following. In dashboard I closed ALL open widgets. I disabled spaces (since in another thread someone indicated it used a lot of memory). I ran Leopard Cache Cleaner and used it to perform maintenances, run the os scripts and rebuild caches and so on. Rebooted.
Now its working fine! Since then its been over 24 hrs and I STILL have over 300megs of ram reported free on a 1 gig system. I've used everything else like normal (safari, mail, ichat, itunes, etc..). Where the problem used to happen after a couple of hours after a reboot every time, now it seems normal. No out of mem, and syslogd is running normally (apparently).
I will run a few apps that I havent run in a while and see if those create an issue. If not, later today I will enable spaces and see how that does after a few hours. Finally I'll add in the dashboard widgets one at a time to see if the issue lies there. I'll report back here if I discover anything.

Microsoft Office 2004 -- extremely high cpu usage and virtual ram

hi,
when i use office it causes a very high cpu usage even when its in idle mode.
i am unable to work with it, because its extremely slow.
does anyone have same experiences?
thanks for your help!
mbp 2.0 1,5gb ram 80gb hdd Mac OS X (10.4.7)

I am able to work OK with office, I'm using the 'old version' Microsoft Office v.X, not much details in the About Box, just listed as MSoft Word/Excel/etc for Mac service release 1.
I get the occasional crash, and I have seen Word in particular use 90% of a single core and amazingly large virtual memory usage, gigabytes sometimes, but eventually the document gets printed.
It shows how useful the dual core (or quad) cpu approach is!
One cpu for Word to print, and one cpu to run the rest of my applications/life!
I still use this old office rather than re-booting into Window§ for whatever is the latest version of office.
Doing some playing with a similar one page document in Office v.X and Pages 2.01, I get Word using about 25% of a core , Pages using 5%, - whilst editing; Intel native Pages has 20% of a core and 80MB ram 480 virtual whilst printing, Word has about 100% of a core and 65MB ram 650 virtual whilst printing, but it is a powerPC code so Rosetta is in there somewhere.
check Activity Monitor or other apps/widgets for some parasitic processes? have fun!
many Macs 512k -> MacBool Pro 2GHz 1GB ram Mac OS X (10.4.7) Yes, I have Key Lime

High cpu impact and many Java exceptions

Hi,
Our development portal is behaving strangely. It's running at normal speed, but with a much higher CPU usage than normal. A quick trace showed that the log-files is filling up fast with the following error message:
System.err sap.com/irj Guest 19 #SAPEngine_Application_Thread[impl:3]_7##0#0#Error##Plain###com.sap.engine.services.httpserver.exceptions.HttpIOException: Read timeout. The client has disconnected or a synchronization error has occurred. Read 15205812 bytes. Expected 45455962.
I have no idea what causes this error, or for how long it has been a problem.
Any clues on what component may be failing, and how to debug and solve this so the development portal can return to a normal state?
Thanks in advance guys,
J. Daugaard

...further research and learning.
Here is a good tutorial on Java. Evidently, what I called "jobs" is referred to as processes and threads in this tutorial. The tutorial states that multithreaded execution is an essential feature of the Java platform which explains the avalanche of threads I observe. However, I am still stumped at what causes the avalanche of threads and excessive CPU consumption for such a mediocre task. Also the system log says that IcedTea has an error stating "Application title was not found in manifest. Check with application vendor". I interpret this to mean that IcedTea does not recognized some application. What application? .....the applet?

High cpu usage and game lag problem

i have a hp 15 d103 tx
windows 8.1 64 bit
inel i5 4200m 2.5ghz
anti virus installed avast fee antivirus
im using nvidia 820m geforce 344.75 version driver
ram installed 8gb
im experiencing huge amount lag in games and software (autocad)
whenever i run a game (for eg batman origins) it run smooth till 2 or 3 minutes after it lag horrribly
for sake first im getting 45 frames per second then suddenly frame drop to 13 or even to 10
i have to press alt + tab to check task manger it show cpu usage 30%
after that when again i press alt tab to back to game it runs fine for 20 seconds and again lag
i dont what the problem high cpu uasge
system idle process sometime shows around 82%
with 8gb of ram still expericing lag
this problem is with all game that i have played and software like photoshop and auto cad
my cousin own hp 15 r007tx and having same gpu nvidia 820m game runs for on his laptop without a lag
is it window 8 problem or something else??

wow finally got the solution by updating bios
just updated the bios from 2.7 to 2.8
no lag now
i guess different cpu load gpu switching on off was problem
but now everything is running good

Browser's javascript engine causing high CPU load and lost swipe events

I'm having performance issues on some websites. I think that my the javascript engine in the Playbook's javascript engine is causing high CPU usage, which means the device misses swipe gestures.
Visit: http://www.bbc.co.uk/news/world-middle-east-15814035
Once the page is loaded swipe to scroll up and down. On my device (and my friend's) it is incredibly slow. Sometimes it refuses to register any swipe events.
Now turn off javascript and reload the page. Swipe to scroll up and down. Smooth as silk!
My device is a new 16Gb with version 1.0.7.3312. Thanks

I'm having the same problem on a number of websites with my 32gb Playbook. On the same sites that I notice slow, sometimes barely responsive swipes for scrolling my wife's iPad 2 handles them with ease. Disabling javascript fixes the problem however a lot of websites including gmail requires javascript to be enabled on your browser to load. I notice the problem quite a bit when using webmail to check my gmail account which is rather frustrating because it is my only option until PB gets a native email client. My PB is running software 1.0.8.4295, but the problem was also occurring when it was running 1.0.7.

TouchPad driver: relatively high CPU load and loads of registry accesses

Under Vista 32 SP1 with the current UltraNav drivers (v 9.1.3.7) the process "SynTPEnh.exe" is creating a relatively high CPU load (2%) and is constantly accessing the registry. See here for a typical pattern creating by Process Monitor:
11:45:38.8648734    SynTPEnh.exe    3544    RegCreateKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS    Desired Access: Maximum Allowed, Granted Access: All Access
11:45:38.8649077    SynTPEnh.exe    3544    RegQueryValue    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2\TrackPointModeFunction    SUCCESS    Type: REG_DWORD, Length: 4, Data: 17
11:45:38.8649209    SynTPEnh.exe    3544    RegCloseKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS
11:45:38.8752991    SynTPEnh.exe    3544    RegCreateKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS    Desired Access: Maximum Allowed, Granted Access: All Access
11:45:38.8753153    SynTPEnh.exe    3544    RegQueryValue    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2\TrackPointModeFunction    SUCCESS    Type: REG_DWORD, Length: 4, Data: 17
11:45:38.8753257    SynTPEnh.exe    3544    RegCloseKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS
11:45:38.8901752    SynTPEnh.exe    3544    RegCreateKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS    Desired Access: Maximum Allowed, Granted Access: All Access
11:45:38.8902010    SynTPEnh.exe    3544    RegQueryValue    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2\TrackPointModeFunction    SUCCESS    Type: REG_DWORD, Length: 4, Data: 17
Can this driver be optimized?
Also, when I use the TrackPoint to scroll in Firefox or in other applications, scrolling is not as smooth as when I use a simple external mouse with a wheel. Moreover, while scrolling with the TrackPoint, the "scrolling cursor" flickers.
Message Edited by Izmi on 01-17-2009 02:58 AM

Same here, but usually around 10% CPU, Win7 64bit on T431s

Mcafee- High CPU usage and picture/ internet inter...

Hi,
I noticed a few weeks ago that mcafee was using 70-100% of my CPU. I have found a work around this problem but I have also noticed that Mcafee is constantly makiing live streaming pictures freeze or buffer. I have proved it is Mcafee causing the problem by turning off real time scanning and the firewall for 60 minutes. I then watch the video steam with no problems but they began again on the 61st minute.
This problem also slows down standard browsing but it is probably been put down to slow internet speed. (mine is 35mb)
Anyone else having this problem?

My advice and that of others on the forum would be to uninstall BTNetprotect. It can cause problems on some computers and is a resource hog. Do a search of the forum to see the problems. There are far better free antivirus programs available such as Avast Free and AVG Free.
If you do want to uninstall BTNetprotect use this guide and make sure you use the BTNetprotect/McAfee removal tool after you have restarted your computer.
http://bt.custhelp.com/app/answers/detail/a_id/13523
If you do want to re use BT Netprotect, uninstall it using this guide along with the BTNetprotect/McAfee removal tool after a restart and then reinstall. This might resolve your problem.
http://bt.custhelp.com/app/answers/detail/a_id/38369/

High CPU Usage and Temperature

I've recently purchased a MacBook with the latest updates, including the firmware for the random shutdowns but lately when I boot the MacBook up, the fans kick on and it reads 83 degrees Celsius with about 65% CPU Usage and I don't have anything running except what came on the MacBook in itself, any suggestions?? Apple told me to take it in to have it looked at but I was wondering if there is anything I can fix perhaps?? Thank you

Sometimes when I connect an external drive which I have made drastic file changes to, there are two process that eat up a lot of cpu power and get the macbook really hot for awhile, those two processed are related to the way spotlight tries to re-index the external drive or the internal hd itself if I had made drastic changes to it too.
Could it be that?
You can see them show up in Activity Monitor, they are mdimport and another one starting with md(something) too.
Hope that helps (if that's the issue)
Best,
Pedro

Rim.desktop.exe high cpu usage and internet activity

What the heck is going on with desktop 6 software? Rim.Desktop.exe is running 10-20% cpu utilization and my router lights are blinking like crazy. It won't shut down right away while this is going on either. I have to force the shutdown to close the app and stop the internet activity. This goes on when my phone is connected or not. Storm 9530.
Dean

Thanks for the quick reply.
If you do not have that 3rd party add-on running, do you notice a difference in the cpu usage? or network connectivity?
Also did you experience any of these problems with running with DTM 5.0.1
The only network connection that Desktop Manager uses is to register the PIN number and to check for updates and down the new updates. But it does not continue constantly.
I would see if you can use BlackBerry Desktop Software without the 3rd party add-on unless you tried before, to see if it's a third party add-on causing the issue or Desktop Manager.
I look forward to your results.
-ViciousFerret
Come follow your BlackBerry Technical Team on Twitter! @BlackBerryHelp
Be sure to click Like! for those who have helped you.
Click Accept as Solution for posts that have solved your issue(s)!

IPhone iOS 4 high CPU bug and work around

Similar Messages

Maybe you are looking for