Server 2012 R2 100% cpu usage when using search

Hi all!
We are experiencing issues with the built in search in WS 2012R2 (Win+Q). Upon starting to type, the explorer.exe process peaks and stays at 100% until typing is done and the search is complete. It also can't keep up with typing and hangs after
a few keystrokes. We have done tests on 2012 R2, 2012 and 2008 R2 running as VMs with 1 cpu. The tests performed have been run on a host running only the test VM with underlying 2x8 core cpus, SSD, SAN storage and 256GB RAM. Also, we have tested
both Hyper-V and VMware ESXi 5.0. We see that if we add another CPU to the guest it alleviates the keystroke lagging, but the explorer.exe still consumes 100% cpu.
When the same tests are run on a physical machine (approx. same specs as the virtualization hosts) the cpu usage reaches 15-20% on one of the physical sockets (numa node). Totally negligible, but still a high number.
We are afraid of service impact and are keen to know if anyone else is experiencing the same? Maybe someone has a fix?

Hi TrondWH,
Thanks for contacting Microsoft.
Currently, would you please try cleaning boot the server and test how the issue goes. Cleaning boot can exclude some third-party application affect. Following are the detailed steps about clean boot:
Log on to the computer by using an account that has administrator rights.
Click Start, type msconfig.exe in the Start Search box, and then press ENTER to start the
System Configuration Utility.
On the General tab, click Selective Startup, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
Click OK, Choose Don’t show this message again and then click Restart.
Please check if the issue is still the same.
Please let me know the result.
Best regards,
Sophia Sun
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.

Similar Messages

Client process (uniengd) on the Calendar server is consuming 100% CPU usage

The Calendar client bits in the Communicator 4.5 release (Calendar Build 981008)
are suspect of hanging the Calendar server when the end user uses the off-line
feature. The behavior seen will be that a cpu will start climbing and could
reach 80-100% of usage, which will cause the response time for all other end
users to be extremely slow and may not even accept any new logins.

The patch for these bits is available via the Smart Update (Windows and Mac) web
site:

http://home.netscape.com/smartupdate/su1_40.html
 Or you can download the complete version from
http://home.netscape.com/download/selectplatform_1_361.html

For Unix platforms, you will need to download the compressed tar file
(available from http://help/filelib.html#nscal)
and reinstall it.
NOTE: To verify that you are executing a patched version, in the
Calendar client:
Windows platform
 Help menu pulldown, About Netscape Calendar, make sure it has Build
981104 or higher.
 Mac platform
 Select the file from your desktop
 File menu pulldown, Get Info. Make sure has a date of 121698, version
4.51 or later.
 Unix platform
 Help menu pulldown, About Netscape Calendar, make sure it has is Version
4.51 or higher

The procedure for determining which user of Calendar is causing the server's cpu
hang is as follows:
<OL>
<LI>Using your favorite monitoring tool on the server, note the PID
 (process ID) of the uniengd process that is consuming
80 - 100% cpu activity.
<LI>Change directory to /users/unision/db/tmp/PID#
<LI>Execute the command "strings" on all the files in the directory
 (there are usually not very many):

 # strings *

 Near the end of the output, you will see the user's name.
<LI>You can now kill the uniengd process on the server:

 # kill PID# (note: do not use the kill -9 unless absolutely
 necessary!)

<LI>Contact the name of the user whose process you looked up and determine
 what version of Calendar client they are using. Immediately inform
 them of your procedure on upgrading to the correct version.
</OL>

Hi TrondWH,
Thanks for contacting Microsoft.
Currently, would you please try cleaning boot the server and test how the issue goes. Cleaning boot can exclude some third-party application affect. Following are the detailed steps about clean boot:
Log on to the computer by using an account that has administrator rights.
Click Start, type msconfig.exe in the Start Search box, and then press ENTER to start the
 System Configuration Utility.
On the General tab, click Selective Startup, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
Click OK, Choose Don’t show this message again and then click Restart.
Please check if the issue is still the same.
Please let me know the result.
Best regards,
Sophia Sun
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.

100% CPU usage when writing to disk

Hi.
I have an Athlon XP 2000+ with 768 MB RAM, a SATA disk, formated to ntfs (running XP) and a IDE disk running Arch (ext3, KDE).
When I copy a big file, the CPU usage stucks to 100% . Doesn't matter the disk I write to or from. The CPU usage is always 100%.
My maximum writing speeds are:
ntfs-3g-->ext3 max ~30 MB/sec
ext3-->ext3 max ~28 MB/sec
ext3-->ntfs-3g max ~15MB/sec
ntfs-3g-->ntfs-3g max ~15 MB/sec
I understand that writing to ext3 is much faster because it is a native linux fs, but I cant understand why the high CPU usage.
While coping, ksysguard shows that the progress with the higher system% is kio_file when coping ext3-->ext3, or kio_file and ntfs-3g, when coping from or to a ntfs disk.
The problem is not with the CPU, in windows the writing speed is higher and the CPU usage is much lower. So I thing this is an Arch configuration problem but don't know where exactly to look. Searched the forum but didnt find any solution.
Any ideas? Anyone with similar problems?
Last edited by matersci (2007-09-09 22:37:00)

with hdparm -I /dev/sda I get:
hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: Maxtor 6L200M0
Serial Number: L41ZFT2C
Firmware Revision: BACE1G10
Standards:
Used: ATA/ATAPI-7 T13 1532D revision 0
Supported: 7 6 5 4
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 398297088
device size with M = 1024*1024: 194481 MBytes
device size with M = 1000*1000: 203928 MBytes (203 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: unknown setting (0x0000)
Recommended acoustic management value: 192, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_VERIFY command
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
Advanced Power Management feature set
SET_MAX security extension
* Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
Media Card Pass-Through
* General Purpose Logging feature set
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* URG for READ_STREAM[_DMA]_EXT
* URG for WRITE_STREAM[_DMA]_EXT
* SATA-I signaling speed (1.5Gb/s)
* Native Command Queueing (NCQ)
Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT Data Tables (AC5)
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
Checksum: correct
It says ATA device, with non-removable media but this is a SATA disk!
Also,
# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 166 MB in 3.01 seconds = 55.23 MB/sec (SATA Disk)
and
# hdparm -t /dev/hdb
/dev/hdb:
Timing buffered disk reads: 176 MB in 3.02 seconds = 58.26 MB/sec (IDE Disk)
hdprm says dma is on for the ide disk, but says nothing about dma for the SATA.
I think the problem is because the kernel recognize the SATA disk as IDE.
Last edited by matersci (2007-09-19 20:24:10)

Upgrade to iTunes to 10.4.0.80 caused 100% CPU usage when I start iTunes. Task manager shows iTunes 50% mobile 50%. I am running Windows XP Professional sp3. iPhone 3 ios 4.3.5

I upgrade to iTunes 10.4.0.80. Since then iTunes uses 50% of the CPU and Mobile uses 50% CPU. I let it run for hours and the CPU usage stayed at 100%. The phone will partially sync but takes a very long time. This was not a problem before the iTunes upgrade. I am running iTunes on Windows XP professional SP3. It does not matter if the phone is connected to the USB port of the PC. When iTunes starts it runs the CPU at 100%.

Yes! I am not the only one with this problem. Ever since the latest iTunes update, the CPU runs up to 100% using both the mobiledevice and itunes itself. The store won't work either! I'm also on Windows XP. I too have tried everything I can think of but nothing has helped. I really hope they get an update out with fixes soon. This is really annoying!!

[SOLVED] qemu-kvm high cpu usage when using pulseaudio alsa-plugin

My Arch system is configured to use pulseaudio. When an application connects to the sound server it will use either a native pulseaudio driver, or the pulseaudio alsa-plugin if it using a alsa driver.
qemu-kvm in 'extra' is not compiled with native pulseaudio support. When running guests with sound hardware support, qemu-kvm connects to the sound server using the pulseaudio alsa-plugin.
The problem I'm seeing is high cpu usage on the Arch host even though cpu usage on the guest is low. Also, the guest is often unresponsive for a period of time when opening sound applications like the mixer or playing audio.
My solution is to recompile qemu-kvm with native pulseaudio support. This eliminates the use of the pulseaudio alsa-plugin on the Arch host and fixes the above problems.
An easy was to do this is run:
yaourt -S qemu-kvm --build
And edit the PKGBUILD changing the line:
--audio-drv-list=alsa,sdl,oss,esd \
To:
--audio-drv-list=pa,alsa,sdl,oss,esd \
Finish building and install. Don't forget to add yourself to the kvm group.
Last edited by bytesize (2010-08-16 02:34:08)

Problem disappeared.
I'm not sure, but i think installing xf86-video-modesetting helped to fix this issue.
I had an error messages in /var/log/Xorg.0.log like this:
(EE) Failed to load module "modesetting" (module does not exist, 0)

High CPU usage when using flash

Hi, on my laptop I have chrome installed and use it as my browser, when ever i use it to view pages it works fine, when i go on Youtube and watch a video within 5 mins it gets very slow, cpu usage goes to 100% and stays there untill i close the browser. i never had this problem before untill this week, i scaned for viruses and nothing showed up, and i dont used intence programs.I changed hardware accelerations thing and it did nothing.
Processor: 1st gen intel i3
Windows 7
Newest Flash Version

i think its the best to hit the report a problem button in safari, since its appears since i updated safari to 5.1.4! maybe they make a additional update

Task Sequence Windows Server 2012 format and partition issue when using MDT2012

Hi all,
Currently I'm working on a task sequence to deploy a Windows Server 2012 image. We've integrated MDT2012 Update 1 in SCCM2012 SP1 and created a default 'Server Task Sequence'. This task sequence deploys the install.wim to a server which has multiple disks
attached.
We've configured multiple format and partition disk steps to create the following partition layout:
Disk 0: 499MB BDEDrive (do not assign drive letter) + 40GB OSDisk
Disk 1: 40GB Programs
Disk 2: 40GB Data
Disk 3: 25GB User
When the task sequence is finished I've noticed the drive letters assigned to the disk are not correct. In some cases the BDEdrive gets drive letter D assigned, sometimes drive letters are assigned starting with E, thus skipping drive
letter D.
The smsts.log files show an error when it's re-assigning drive letters after booting into Windows. Looks like an error in the DiskPartScript.txt.
<![LOG[==============================[ OSDSetupHook.exe ]==============================]LOG]!><time="16:59:40.889-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776"
file="osdsetuphook.cpp:186">
<![LOG[Executing task sequence]LOG]!><time="16:59:40.905-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776" file="osdsetuphook.cpp:279">
<![LOG[Loading the Task Sequencing Environment from "C:\_SMSTaskSequence\TSEnv.dat".]LOG]!><time="16:59:40.920-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776"
file="basesetuphook.cpp:366">
<![LOG[Environment scope successfully created: Global\{51A016B6-F0DE-4752-B97C-54E6F386A912}]LOG]!><time="16:59:40.936-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776"
file="environmentscope.cpp:659">
<![LOG[Environment scope successfully created: Global\{BA3A3900-CA6D-4ac1-8C28-5073AFC22B03}]LOG]!><time="16:59:40.936-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776"
file="environmentscope.cpp:659">
<![LOG[Debug shell is enabled]LOG]!><time="16:59:43.806-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776" file="basesetuphook.cpp:1440">
<![LOG[Successfully enabled debug command shell support.]LOG]!><time="16:59:43.884-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776" file="debugwindow.cpp:156">
<![LOG[Configuring local administrator account]LOG]!><time="16:59:43.884-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776" file="basesetuphook.cpp:1462">
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<![LOG[Executing command line: "C:\WINDOWS\system32\diskpart.exe" /s "C:\WINDOWS\TEMP\DiskPartScript.txt"]LOG]!><time="16:59:43.900-120" date="05-10-2013" component="OSDSetupHook" context=""
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<![LOG[Process completed with exit code 2147942487]LOG]!><time="16:59:50.249-120" date="05-10-2013" component="OSDSetupHook" context="" type="1" thread="776" file="commandline.cpp:1123">
<![LOG[Diskpart.exe STDOUT:
Microsoft DiskPart version 6.1.7601
Copyright (C) 1999-2008 Microsoft Corporation.
On computer: SRV03
Volume 1 is the selected volume.
DiskPart successfully removed the drive letter or mount point.
The volume you selected is not valid or does not exist.
There is no volume selected.
]LOG]!><time="16:59:50.249-120" date="05-10-2013" component="OSDSetupHook" context="" type="3" thread="776" file="diskutils.cpp:1807">
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select volume D
remove letter=D
select volume D
remove letter=D
select volume E
remove letter=E
select volume F
remove letter=F
select volume H
remove letter=H
select disk 0
select partition 1
assign
select disk 1
select partition 1
assign
select disk 2
select partition 1
assign
select disk 3
select partition 1
assign
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all looks ok showing no errors in the smsts.log file.
I've solved this by replacing the first 'Format and Partition Disk' step by an Powershell command which formats and partitions the disk.
Anyone seen this behavior?

I have a similar problem when I install windows on some clients. Have you found any explanation for the behavior?

Kernel_task high cpu usage when using external monitor at 1080p

Specs
Model Name:          MacBook Pro
Model Identifier:          MacBookPro6,2
Processor Name:          Intel Core i7
Processor Speed:          2.66 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache (per core):          256 KB
L3 Cache:          4 MB
Memory:          4 GB
Processor Interconnect Speed:          4.8 GT/s
Boot ROM Version:          MBP61.0057.B0C
SMC Version (system):          1.58f15
My external display is a Samsung PX2370 connected to my MBP using an HDMI cable with a HDMI-to-miniDP adapter
I first noticed this after the last EFI update several months back. At first I thought kernel_task eats up too much cpu cycles whenever an external display is attached, but it turns out this only happens when the external display is set to 1080p. When external display is set to 720p, kernel_task is pretty much normal (~5% cpu usage) but rises up to ~150% cpu usage once the external display is set to 1080p.
kernel_task cpu usage is also with normal range when my MBP is connected to a Samsung LCD TV at 720p.
Anyone having the same problem or know of any fix/workarounds?

Seems like the problem persists when playing a 720p video on the external display set to 720p. To sum it up
Video Resolution
Main Display
External (1280x720)
External (1920x1080)
480p
ok
fluctuating kernel_task cpu usage (~5 to ~150 cpu usage)
high kernel_task cpu usage
720p
ok
high kernel_task cpu usage
high kernel_task cpu usage
1080p
ok
high kernel_task cpu usage
high kernel_task cpu usage

Bug!?! 100% CPU usage when referencing secured JARs in unsecured JNLP

hi,
i think i just found a bug in jws but i'm not sure yet. it would be nice if somebody can verify this before i create a bug report.
this is my JNLP file (test.jnlp):
<jnlp ...>
<information>
 <title>Test</title>
 <shortcut online="true">
 <desktop/>
 </shortcut>
</information>
<security>
 <all-permissions/>
</security>
<update check="always" policy="always"/>
<resources>
 <java version="1.6"/>
 <jar href="jar/mySecuredJar.jar" download="eager" main="true"/>
</resources>
<application-desc main-class="test.MyTest"/>
</jnlp>this is the file structure on the server:
download/ // public folder
 test.jnlp
 jar/ // private folder secured via basic authentication
 mySecuredJar.jarwhen i access the jnlp file for the first time via browser the jws login dialog opens asking me for credentials since test.jnlp internally references a jar that is in a secured area. while this jws dialog is open my cpu usage is normal - javaw.exe takes about 5%.
however, when i open my application for the 2nd time via desktop shortcut, the jws authentication dialog opens again (jws looks for updates of my jar before the application starts) and javaw.exe takes about 95% of my cpu as long as the dialog is open!!!
when i put the jnlp file in the secured area as well, everything works smoothly. however, this forces users to enter credentials in a browser authentication dialog (browser needs to access the secured jnlp) as well as in the above mentioned jws authentication dialog.
can anybody reproduce this? should i file a bug report?
i tested this on win xp with jre 1.6.0_11.
regards,
stephan

Please, [file |http://javafx.netbeans.org/issues/enter_bug.cgi?component=javafx] an issue on it.

How to decrease CPU usage when using multiple threads?

I am using vb.net , .NetFramework 2.0 .
My application gets live stock prices from google and updates stocks in database each 10 seconds.
I get this code for multithreading. When application starts updating stocks in database(about 200 stocks) , the update takes up to 3 seconds but it increase CPU usage from 10 % to 70 % or 80 %.
What is the best way to to update database without getting CPU increase to high level?
I observed that all threads works at the same time. how to make each thread wait until the second ends?
This is my code. The problem is in function updateThreaded2().
Please I need quick help. Thanks
Public Function Update2(ByVal l As SortableBindingList(Of NewStockList)) As Long
res = 0
UThread = New System.Threading.Thread(AddressOf UpdateThreaded2)
If Me.URunning = True Then
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Me.URunning = True
Interlocked.Exchange(Me.UCount, 0) 'threadsafe method of assigning static value
Interlocked.Exchange(Me.UDone, 0) 'threadsafe method of assigning static value
UThread.Priority = Threading.ThreadPriority.BelowNormal
UThread.IsBackground = True
UThread.Start(l)
Return 0
Catch ex As Exception
End Try
End If
End Function
Private Sub UpdateThreaded2(ByVal l As SortableBindingList(Of NewStockList))
Dim i As Integer = 0
Dim threadcount As Integer = Math.Min(Me.MaxThreads, Me.Stocks.Count)
Dim threads(threadcount - 1) As SUTC
Try
While i < Me.Stocks.Count
For j As Integer = 0 To threadcount - 1
If threads(j) Is Nothing Then
If i < Me.Stocks.Count Then
threads(j) = New SUTC(Me.Stocks(i), Me.DefaultService, AdjustSplits, Use20Minutes, l)
threads(j).Thread.Priority = Threading.ThreadPriority.BelowNormal
threads(j).Thread.IsBackground = True
threads(j).Thread.Start()
i += 1
End If
ElseIf threads(j).UpdateState = 0 Then
If i < Me.Stocks.Count Then
SecUpd(j) = Me.Stocks(i).symbol
threads(j) = New SUTC(Me.Stocks(i), Me.DefaultService, AdjustSplits, Use20Minutes, l)
threads(j).Thread.Priority = Threading.ThreadPriority.BelowNormal
threads(j).Thread.IsBackground = True
threads(j).Thread.Start()
i += 1
End If
End If
Next
Dim running As Boolean = True
While running
For j As Integer = 0 To threadcount - 1
If threads(j).UpdateState = 0 Then
Thread.Sleep(10)
running = False
SecUpd(j) = ""
Interlocked.Increment(UDone) 'threadsafe method of incrementing a variable by 1
Interlocked.Exchange(UCount, UCount + threads(j).UpdateCount) 'Threadsafe method for assigning a value
End If
Next
End While
End While
Dim pending As Integer = threadcount
Dim tempcount As Integer = 0
Dim oldcount As Integer = UCount
While pending > 0
pending = threadcount
tempcount = 0
For i = 0 To threadcount - 1
If threads(i).UpdateState = 0 Then
SecUpd(i) = ""
pending -= 1
tempcount += threads(i).UpdateCount
Thread.Sleep(10)
End If
Next
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Interlocked.Exchange(UCount, oldcount + tempcount) 'Threadsafe method for assigning a value
End While
Me.URunning = False
Catch ex As System.Threading.ThreadAbortException 'handle abort correctly
Dim pending As Integer = threadcount
Dim tempcount As Integer = 0
Dim oldcount As Integer = UCount
While pending > 0
pending = threadcount
tempcount = 0
For i = 0 To threadcount - 1
If threads(i).UpdateState = 0 Then
SecUpd(i) = ""
pending -= 1
tempcount += threads(i).UpdateCount
End If
Next
Interlocked.Exchange(UDone, Me.Stocks.Count - pending) 'Threadsafe method for assigning a value
Interlocked.Exchange(UCount, oldcount + tempcount) 'Threadsafe method for assigning a value
End While
End Try
End Sub

When the market is opened, stock prices changed every 500 ms . You can see this change on google finance.
I figured as much, but my thoughts are that if you can somehow find a way to make your program more event driven, then it may be possible to reduce unnecessary looping...
“If you want something you've never had, you need to do something you've never done.”
Don't forget to mark
helpful posts and answers
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*This post does not reflect the opinion of Microsoft, or its employees.

High cpu usage when using flash player

Hi,
Just updated to Mavericks and now I'm having very high cpu usage while watching streams using flash player. CPU usage is somewhere around 110% and after a moment the stream starts to lag and fps is slowing down. I also tried using Chrome but with no difference. Flash player is the newest version 11.9.900.117.
Any ideas on how to fix this?

i think its the best to hit the report a problem button in safari, since its appears since i updated safari to 5.1.4! maybe they make a additional update

I have very high 100% CPU usage when I run itunes.

Normally I don't have any problems, but now when I start iTunes it eats up my CPUs. Any thoughts?

I am having this same problem. When running iTunes on my macbook pro, i notice my CPU usage is hovering around 94-97% constantly. Has anyone found out why?

100% cpu usage when opening itunes or quicktime, please help!

every time i open itunes or quicktime my windows laptop centrino´s core jumps to 100%, even when the programs are idle!!
-i tried reinstalling them, manually removing any leftover program files and folders.
-Right-clicking on the QuickTime folder and clicking Delete from the shortcut menu.
-Navigate to C:\Windows\system32\.
-Remove the files QuickTime.qts and QuicktimeVR.qtx.
nothing works...
now i cant listen to music with only my batteries anymore!
windows media player ***** and the new version 11 is a lot worse, but it uses just about 10% of my processor.
thank you for your help!
gateway centrino mx6618m Windows XP

hi captain
actually i noticed the problem in the first place when cheching the task manager. 97% itunes 3% taskmanager.
i wish i could know what all those other tasks are and end them (some are obvious but other arent), but it wouldnt solve my problem.
still thank you
XP centrino laptop Windows XP

100% CPU usage when importing cd and downloading from store, please help!

I am using itunes 8.2.1.6. The problem is that whenever I import a cd or download any music from the store my cpu runs at 100%. I have a pentium 4 (which manages nicely with any other task, even importing cd's with another programe) with 3gb RAM.
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Mr. Bump

Queue consumer stops with 100% cpu usage

I'm trying to use Berkeley DB queue with transactions. When I tested what happens when transactions with DB_APPEND are aborted I found that while it works and DB_CONSUME correctly skips over rolled back records, unfortunately extents that have those records are never deleted, which causes database to always grow. Next I tried DB_CONSUME with database opened using DB_INORDER flag and it seems there's a serious regression in Berkeley DB that causes it to loop indefinitely with 100% cpu usage when it encounters a rolled back record. I tested various versions and found that this bug doesn't happen with 5.1.29, but it is reproducible with 5.2.42, so this regression might have been introduced in 5.2. I have also tested 5.3 and 6.0, and both have this behavior. There may be something wrong with the way queue records are rolled back, one indication of that would be that in 5.1.29 doesn't have neither of the two problems I found with DB_QUEUE: extents are deleted after being consumed, and there are no issues when consuming with DB_INORDER either.
You can find Python code to reproduce this issue here:
https://gist.github.com/snaury/027a3c546f5b0a62a440
Sorry for using Python and not e.g. C++, but it's a lot shorter that way.

We have looked at the issues and they are valid. We will roll the fixes out for this in our next release of BDB. The test case was very useful and really helped to speed the process up. If you have any questions, please contact me directly at [email protected] Thanks again for bringing this to our attention.
thanks
mike

Server 2012 R2 100% cpu usage when using search

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