High CPU usage on all cores by ntoskrnl.exe? Help needed urgently Please.

ntoskrnl.exe, system, has multiple cores running with high usage, locking up my system when using programs.
After looking through the forums I did the following:
I ran
sfc /scannow but nothing found.
I used process Explorer to find that the system has a thread <ntoskrnl.exe!TtlSid HashLookup+0x 1ffc> that
is using up 40+% of all four cpu cores. Looks like a driver fault with 8.1, but cannot pinpoint the device. Any clues msg me.
I have created an etl file that contains usage data. this is present here:
https://dl.dropboxusercontent.com/u/8554814/highCPUUsage.zip
Would be a lot of help if this can be resolved. please help.

forgot to ask, may I know your PC model?
mostly is related to the network, networking software, or software which need internet connection
did you already updated all the network driver?
is there any networking software or downloaded software? may I know your antivirus status? firewall?
try clean boot and go to safemode to check, choose safe mode only, safe mode with networking and normal mode without internet (unplug cable or disconnect Wifi)

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****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
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Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

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Hi there,
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Inventory: *********************** Start of message processing. ***********************
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11088 (0x2B50)
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InventoryAgent 18.03.2015 14:07:12
7836 (0x1E9C)
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7836 (0x1E9C)
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7552 (0x1D80)
Inventory: Action completed. InventoryAgent
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Inventory: ************************ End of message processing. ************************
InventoryAgent 18.03.2015 14:07:30
7552 (0x1D80)
Collection: Namespace = \\.\root\cimv2; Query = SELECT __CLASS, __PATH, __RELPATH, Caption, ClassGuid, ConfigManagerErrorCode, ConfigManagerUserConfig, CreationClassName, Description, DeviceID, Manufacturer, Name, PNPDeviceID, Service, Status, SystemCreationClassName,
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InventoryAgent 18.03.2015 14:07:12
7836 (0x1E9C)
Collection: 62/74 inventory data items successfully inventoried.
InventoryAgent 18.03.2015 14:07:12
7836 (0x1E9C)
Inventory: Collection Task completed in 21436.097 seconds
InventoryAgent 18.03.2015 14:07:12
7836 (0x1E9C)
Inventory: 12 Collection Task(s) failed. InventoryAgent
18.03.2015 14:07:12 7836 (0x1E9C)
Inventory: Temp report = C:\WINDOWS\CCM\Inventory\Temp\25bf01b2-12fc-4eea-8e97-a51b3c75ba50.xml
InventoryAgent 18.03.2015 14:07:12
7836 (0x1E9C)
Inventory: Starting reporting task. InventoryAgent
18.03.2015 14:07:12 7552 (0x1D80)
Reporting: 4381 report entries created. InventoryAgent
18.03.2015 14:07:13 7552 (0x1D80)
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InventoryAgent 18.03.2015 14:07:13
7552 (0x1D80)
Inventory: Successfully sent report. Destination:mp:MP_HinvEndpoint, ID: {5541A94A-BED9-4132-AE54-110CB6896F02}, Timeout: 80640 minutes MsgMode: Signed, Not Encrypted
InventoryAgent 18.03.2015 14:07:13
7552 (0x1D80)
Inventory: Cycle completed in 21453.570 seconds
InventoryAgent 18.03.2015 14:07:30
7552 (0x1D80)
Inventory: Action completed. InventoryAgent
18.03.2015 14:07:30 7552 (0x1D80)
Inventory: ************************ End of message processing. ************************
InventoryAgent 18.03.2015 14:07:30
7552 (0x1D80)

InventoryAgent 18.03.2015 08:10:03
7836 (0x1E9C)
Collection: Namespace = \\.\root\cimv2; Query = SELECT __CLASS, __PATH, __RELPATH, DefaultIPGateway, DHCPEnabled, DHCPServer, DNSDomain, DNSHostName, Index, IPAddress, IPEnabled, IPSubnet, MACAddress, ServiceName FROM Win32_NetworkAdapterConfiguration; Timeout
= 600 secs. InventoryAgent
18.03.2015 14:06:43 7836 (0x1E9C)
Collection: Namespace = \\.\root\Nap; Query = SELECT __CLASS, __PATH, __RELPATH, description, fixupState, friendlyName, id, infoClsid, isBound, percentage, registrationDate, vendorName, version FROM NAP_SystemHealthAgent; Timeout = 600 secs.
InventoryAgent 18.03.2015 14:06:43
7836 (0x1E9C)
Looks like something in one or both of those wmi queries. it goes from 8:10:03 to 14:06:43 right around there. 6 hours to do that...
try running those queries from wbemtest manually; and see which one just never finishes.
Standardize. Simplify. Automate.

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Does anyone know if Adobe has solved High CPU usage at all
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Hello,
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Hi Sir,
Please refer to following article regarding troubleshooting high cpu usage in system process :
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Please installed all update patch and newest hardware driver first .
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Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected] .

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Hello everyone,
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From what you say, I think that the Silverlight upgrade might be the culprit in my case too. But the effect is there also for Youtube, Skype , or any other Video/Graphics intensive application that I use. Although, Silverlight/Netflix performs the worst among all the apps.
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High cpu usage after a while

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On close, I ordered ff to clear all history and cookies.
Notes that could be important (The behavior encountered while using it. This varies from time to time):
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I hope this isn't a heisenbug and there is a solution to this, a reboot ff button would be a nice workaround though. I personally think that it must be some routine in the code that decides to go nuts for no reason.
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Tried those before and tried them again. Unfortunately, the problem keeps repeating itself at random times. As said, sometimes it doesn't occur and sometimes suddenly it does. Keep the following things in mind about this, what seems like a heisenbug, behavior.
- opening new tabs (a lot or a few) => "heavy" load during site loading, then idling
==> The above makes sense
- same as above but load continues to be heavy. => could be some badly written javascript on the site, however, sometimes this occurs with sites I know have no stressful javascript
==> The above seems odd
- Browser is idle in the background (not actively using it). Then all of the sudden "lets floor it until closed".
==> The above seems pretty odd
- When confronted with high CPU usage, closing ff doesn't close it (the ff process remains active. Not a ff process, THE ff process). => High CPU usage remains
==> The above looks like that there is definitely something wrong here
As stated, a reboot ff button would be a nice workaround. I personally think that something like a tread must get stuck in some sort of infinite loop. Browsing in ff works just fine though. I just don't like the fact that I turns into a "gasoline guzzler".
Again, thanks in advance

Skype 4.2.0.11 has abnormally high CPU usage while...

Skype 4.2.0.11 has abnormally high CPU usage while idle.
I can't get my laptop under 70 degrees celsius unless I cpulimit or quit skype, and cpulimiting it actually makes it completely unresponsive, as if some other thread is constantly generating a lot of work and taking priority over the UI thread.
What the heck is skype doing? (And why do any of its threads need nice -10?) It takes up more CPU time than pulseaudio, truecrypt, and deluged combined.
Its CPU usage is constantly between 5 and 50 percent*, it's absolutely horrible.
*While idle. I'm unable to make calls.
I know this is expected from a linux user, but for all I know, Skype is malware. It's not open-source, so I can't find out for myself, and there are no open-source alternatives so the frankly shameful amount of bugs I encounter in Skype will never be fixed.
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Attached are statistics from my desktop over approximately a 24 hour period for the processes shown (other than firefox and adb).
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I really wish that at least the protocol would be documented so someone could work around this, at the moment I don't think the guys writing skype realize just how unstable the linux port is. At least it's better than the Android port.
[Edit for those unfamiliar with linux processes: "TIME" is the cumulative time that the program has been scheduled for on any core, effectively making it a measure of total CPU usage for a given time period]
Attachments:
2014-06-22-233238_530x119_scrot.png ‏9 KB

High CPU usage on OS X 10.9.4

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If it works in Safe Mode and in normal mode with all extensions (Firefox/Tools > Add-ons > Extensions) disabled then try to find which extension is causing it by enabling one extension at a time until the problem reappears.
Close and restart Firefox after each change via "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: Firefox > Quit Firefox; Linux: Firefox/File > Quit)
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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First of all, sorry for my pour English.
O.S.:
pceudb9:~ # cat /etc/*release
SUSE Linux Enterprise Server 10 (x86_64)
VERSION = 10
PATCHLEVEL = 2
Database:
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL>
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top - 15:22:25 up 576 days, 21:09, 3 users, load average: 1.32, 1.50, 1.53
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Cpu(s): 12.7%us, 0.1%sy, 0.1%ni, 86.7%id, 0.4%wa, 0.0%hi, 0.0%si, 0.0%st
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
16026 oracle 16 0 1440m 807m 20m S 100 1.3 28575:34 /u01/app/oragrid/11.2.0/jdk/jre//bin/java -Doracle.supercluster.cluster.server=eonsd -Djava.net.p
6925 oracle 16 0 9880 1528 976 R 0 0.0 0:00.01 top
oracle@pceudb9:~> ps auxww|grep -i 16026|grep -iv grep|grep -iv /u01/app/oragrid/11.2.0/bin/orarootagent.bin
oracle 16026 16.4 1.2 1475532 826580 ? Sl Jul20 28576:32 /u01/app/oragrid/11.2.0/jdk/jre//bin/java -Doracle.supercluster.cluster.server=eonsd -Djava.net.preferIPv4Stack=true -Djava.util.logging.config.file=/u01/app/oragrid/11.2.0/srvm/admin/logging.properties -classpath /u01/app/oragrid/11.2.0/jdk/jre//lib/rt.jar:/u01/app/oragrid/11.2.0/jlib/srvm.jar:/u01/app/oragrid/11.2.0/jlib/srvmhas.jar:/u01/app/oragrid/11.2.0/jlib/supercluster.jar:/u01/app/oragrid/11.2.0/jlib/supercluster-common.jar:/u01/app/oragrid/11.2.0/ons/lib/ons.jar oracle.supercluster.impl.cluster.EONSServerImpl
CPU is always 100% (sometimes more...)
Can somebody help me please? What is this process? This is a bug? I can't find anything on metalink.
Thanks in advice.
Regards
Vitor

Thanks for reply. Answer for questions:
There was a bug where if you had a DB that was registered in CRS using an older version of srvctl it would cause eons to spin.
Is there only one instance on this node? Has it always been 11gR2? Are there repeating messages in $GRID_HOME/log/pceudb9/agent/crsd/oraagent_oracle/oraagent_oracle.log ?
Edit: I found the MOS note: 1062675.1
I was remembering the bug incorrectly -- it happens if you register a DB with a newer version of srvctl than the DB is. Same questions would apply, though.
Is there only one instance on this node?
oracle@pceudb9:~> ps auxww|grep -i pmon
oracle 15555 0.0 0.1 190492 88356 ? Ss Jul20 0:05 asm_pmon_+ASM1
oracle 16181 0.0 50.8 214080 33576804 ? Ss Jul20 1:52 ora_pmon_jpharm1
oracle 21318 0.0 0.0 3932 836 pts/2 S+ 16:07 0:00 grep -i pmon
oracle@pceudb9:~>
Has it always been 11gR2? No. We upgraded this db.
Are there repeating messages in $GRID_HOME/log/pceudb9/agent/crsd/oraagent_oracle/oraagent_oracle.log ?
oracle@pceudb9:/u01/app/oragrid/11.2.0/log> ls -ltrh pceudb9/agent/crsd/oraagent_oracle/oraagent_oracle.log
-rw-r--r-- 1 oracle oinstall 1.9M 2011-11-18 16:10 pceudb9/agent/crsd/oraagent_oracle/oraagent_oracle.log
tail on file:
2011-11-18 16:12:02.617: [ora.asm][1510000960] [check] CrsCmd::ClscrsCmdData filter on LAST_SERVER eq pceudb9
2011-11-18 16:12:02.617: [ora.asm][1510000960] [check] CrsCmd::ClscrsCmdData filter on NAME eq ora.asm
2011-11-18 16:12:02.617: [ora.asm][1510000960] [check] CrsCmd::stat resName ora.asm statflag 1 useFilter 0
2011-11-18 16:12:02.617: [ora.asm][1510000960] [check] CrsCmd::ClscrsCmdData::stat entity 1 statflag 1 useFilter 0
2011-11-18 16:12:02.640: [ora.asm][1510000960] [check] CrsCmd::ClscrsCmdData::stat resname ora.asm 1 1 attr STATE value ONLINE
2011-11-18 16:12:02.640: [ora.asm][1510000960] [check] CrsCmd::stat resName ora.asm state ONLINE
2011-11-18 16:12:02.641: [ora.asm][1510000960] [check] CrsCmd::ClscrsCmdData::stat resname ora.asm 1 1 attr STATE_DETAILS value Started
2011-11-18 16:12:02.641: [ora.asm][1510000960] [check] CrsCmd::stat resName ora.asm state details Started
2011-11-18 16:12:02.641: [ora.asm][1510000960] [check] CrsCmd::ClscrsCmdData::stat resname ora.asm 1 1 attr INCARNATION value 1
2011-11-18 16:12:02.641: [    AGFW][1510000960] check for resource: ora.asm pceudb9 1 completed with status: ONLINE
2011-11-18 16:12:03.117: [    AGFW][1342208320] CHECK initiated by timer for: ora.jpharm.db 1 1
2011-11-18 16:12:03.118: [    AGFW][1543559488] Executing command: check for resource: ora.jpharm.db 1 1
2011-11-18 16:12:03.118: [ora.jpharm.db][1543559488] [check] Gimh::check condition (GIMH_NEXT_NUM) 9 exists
2011-11-18 16:12:03.118: [    AGFW][1543559488] check for resource: ora.jpharm.db 1 1 completed with status: ONLINE
2011-11-18 16:12:04.117: [    AGFW][1342208320] CHECK initiated by timer for: ora.jpharm.db 1 1
2011-11-18 16:12:04.118: [    AGFW][1711352128] Executing command: check for resource: ora.jpharm.db 1 1
2011-11-18 16:12:04.118: [ora.jpharm.db][1711352128] [check] Gimh::check condition (GIMH_NEXT_NUM) 9 exists
2011-11-18 16:12:04.118: [    AGFW][1711352128] check for resource: ora.jpharm.db 1 1 completed with status: ONLINE
2011-11-18 16:12:05.117: [    AGFW][1342208320] CHECK initiated by timer for: ora.jpharm.db 1 1
2011-11-18 16:12:05.118: [    AGFW][1778469184] Executing command: check for resource: ora.jpharm.db 1 1
2011-11-18 16:12:05.118: [ora.jpharm.db][1778469184] [check] Gimh::check condition (GIMH_NEXT_NUM) 9 exists
2011-11-18 16:12:05.118: [    AGFW][1778469184] check for resource: ora.jpharm.db 1 1 completed with status: ONLINE
2011-11-18 16:12:06.117: [    AGFW][1342208320] CHECK initiated by timer for: ora.jpharm.db 1 1
2011-11-18 16:12:06.118: [    AGFW][1744910656] Executing command: check for resource: ora.jpharm.db 1 1
2011-11-18 16:12:06.118: [ora.jpharm.db][1744910656] [check] Gimh::check condition (GIMH_NEXT_NUM) 9 exists
2011-11-18 16:12:06.118: [    AGFW][1744910656] check for resource: ora.jpharm.db 1 1 completed with status: ONLINE
2011-11-18 16:12:07.117: [    AGFW][1342208320] CHECK initiated by timer for: ora.jpharm.db 1 1
2011-11-18 16:12:07.118: [    AGFW][1308649792] Executing command: check for resource: ora.jpharm.db 1 1
2011-11-18 16:12:07.118: [ora.jpharm.db][1308649792] [check] Gimh::check condition (GIMH_NEXT_NUM) 9 exists
2011-11-18 16:12:07.118: [    AGFW][1308649792] check for resource: ora.jpharm.db 1 1 completed with status: ONLINE
2011-11-18 16:12:08.117: [    AGFW][1342208320] CHECK initiated by timer for: ora.jpharm.db 1 1
2011-11-18 16:12:08.118: [    AGFW][1644235072] Executing command: check for resource: ora.jpharm.db 1 1
2011-11-18 16:12:08.118: [ora.jpharm.db][1644235072] [check] Gimh::check condition (GIMH_NEXT_NUM) 9 exists
2011-11-18 16:12:08.118: [    AGFW][1644235072] check for resource: ora.jpharm.db 1 1 completed with status: ONLINE
oracle@pceudb9:/u01/app/oragrid/11.2.0/log>
Thanks again! :)

Mdworker process suddenly high CPU usage

Hi All
I've been running Mountain Lion since it was released, upgrading from Lion. I've never had a problem with mdworker until a few days ago when suddenly, the mdworker process started hitting 90% CPU on my iMac.
I've disabled Spotlight, deleted the .Spotlight directories, rebooted the iMac, but each time mdworker . Prior to this, the iMac's CPU temperature was around 43C, with very little CPU usage, but now it is around 60C and 100% across the two cores. The only way to 'get back to normal' is to use :
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
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I've used 'sudo fs_usage -w -f filesys mdworker' but I can't see anything that mdworker is perhaps choking on.
Does any have any ideas? I'm racking my brain to remember if I did anything different a few days back that might have caused this to happen, but apart from just normal email and web surfing, nothing else springs to mind.
Help!
Paul

David Losada
This solved my questionRe: mdworker process suddenly high CPU usage Nov 28, 2012 1:41 AM (in response to antobal)
In my case it was the BritannicaBookmark.mdimporter that was a PowerPC mdimporter. But it was not in \library\spotlight but inBritannica 12.0/Ultimate Reference Suite.app/Contents/Library/Spotlight.
You can see what spotlight plugin is choking on you by selecting the mdworker process in the Activity monitor and click on Open files and processes.
Sounds helpful, but I don't see "Open files and processes" in Activity Monitor. If I click on inspect, I get a choice to "Sample" processes. I get a system log that is a bit beyond me.
antobal Brussels, Belgium
Re: mdworker process suddenly high CPU usage Oct 3, 2012 12:47 PM (in response to asfafa)
I was having the same problem, and a second level support person at Apple helped me solve the issue today:
Look in the \library\spotlight folders both at your drive root level and your user folder. These folders contain spotlight plugins, with the extension .mdimporter. Some of those plugins, if defective, can make the Spotlight indexing processes to run continuously.
Also sounds helpful, I found .mdimporter files in my system library, but nothing looked unusual. I didn't see a spotlight folder in my user library. I looked in application support and several other places. I used Onyx to repair permissions, rebuild spotlight index, clear caches etc, rebooted, it seems to be OK now.

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If I may hazard a guess, I think I know what the bug is, or at least, what is the nature of the problem that I have. The rest of you may have a different bug. When I have difficulty, it is because I am on a window that suppresses the dock, both in remote virtual screen and on the local machine showing the screen. Two docks are suppressed, one remote, one local. Throw in overlapping windows with changing graphics in the overlapped windows and toss in a mouse on top of that. I think that the Screen Sharing is trying to refresh overlapping windows with mouse and going through the suppressed dock calculations and never converging on what the picture should be. The mouse ends up being the visible cue that shows the time frame for iterating the windows - flickers with a timeframe of greater than a second. That is far greater than the screen update time. It is totally compute bound with all the overlapping stuff that it is deconflicting. At least, that is what I think is going on.
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I have a solution for my problem. It is similar to using a different VNC server/client pairing. I will use a VNC server for the systems giving me trouble that is not Screen Sharing Server exercising a probable bug in the Client (though, it could be a problem in the design of Screen Sharing itself).

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