Svchost.exe with "Dhcp, eventlog, lmhosts" services is generating thousands of page faults and I/O reads per second?

On one of our Windows 2008 R2 Enterprise (SP1) servers, we're noticing a strange phenomenon.....that the svchost.exe that hosts "Dhcp, eventlog, lmhosts" is constantly generating page faults....a few thousand per second, accumulating to billions of total
page faults.  I/O reads and I/O other are also rising every second.  Cpu is consistently 2%, and memory is constant. (~40M). 
I'm guessing that it's the eventlog service because our HP openview log reader (opcle.exe) is also working hard to keep up.  I've searched for others posting a similar problem but am coming up empty handed. 
This is a MS Analysis Services 2008 server, but we haven't noticed any problems coming from SSAS.  We have other file sharing-related jobs that interact with this server, that sometimes take 30 min and sometimes 6 hours, for the same workload....and
we're thinking that the 6 hour runs are somehow related to this process's unusual page faults.
Anyone else seen this eventlog strange behavior?
Thanks
-Mark

Hi,
The best thing would be downloading the Process Explorer and analyzing the problem.
Process Explorer
http://technet.microsoft.com/en-us/sysinternals/bb896653
For how to use Process Explorer to troubleshoot the performance issue, please refer to the following Microsoft TechNet blogs:
HIGH CPU – SVCHOST.EXE
http://blogs.technet.com/b/askperf/archive/2009/04/10/prf-high-cpu-svchost-exe.aspx
Getting Started with SVCHOST.EXE Troubleshooting
http://blogs.technet.com/b/askperf/archive/2008/01/11/getting-started-with-svchost-exe-troubleshooting.aspx
If you find the cause is Automatic update, please also refer to the following Microsoft TechNet blog:
Automatic Update causes SVCHOST.exe high CPU
http://blogs.technet.com/b/asiasupp/archive/2007/05/29/automatic-update-causes-svchost-exe-high-cpu.aspx
Regards,
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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    http://www.bleepingcomputer.com/tutorials/list-services-running-under-svchostexe-process/#advanced, which I think is well written and very handy indeed!
    My current issue is that I am tweaking a security program called McAfee Host IPS, currently running on 2003 R2 and 2008 R2 servers, and getting a lot of events associated with svchost.exe that I believe require exceptions to be configured.  What I do
    not want to do, however, is configure an exception that hides something that may be useful information, however there is a balance required in what I am doing.
    Focusing on my current task at hand, I can confirm I have seen a large number of events associated with the below.  The below is all of the information I have on the Host IPS signature in question, although I am currently digging further.
    IPS Signature Name: CMD Tool Access by a Network Aware Application
    IPS Signature details: This event indicates an attempt by a networked application to access, modify or execute a system program that may be used to modify the configuration of your system.
    IPS Signature severity: Low
    I have seen a large number of events with threat source process = C:\WINNT\SYSTEM32\SVCHOST.EXE, and the following files, either accessed or executed.
    C:\WINNT\System32\tasklist.exe
    C:\WINNT\System32\ipconfig.exe
    C:\WINNT\System32\cmd.exe
    C:\WINNT\System32\route.exe
    As the above reference lists DLLs specifically, and not EXEs, I am not sure if this is expected (but am gathering it is, especially as the IPS signature details refers to 'system programs').
    I am suspecting that my best action here is to configure an exception for threat source process <systemdir>\SVCHOST.EXE and target files <systemdir>\*.*, as my hypothesis is that even if I have not seen it in the tuning phase, there are
    a lot of similar benign actions that could potentially trigger in the day to day workings of the OS.  I am also assuming that I will see similar in later versions of Windows Server OS.
    To throw a slight curveball, we are also integrated with a SIEM solution.  As this signature severity is low, it is mapped to a log action so nothing will actually be stopped, but if there are no exceptions, relevant events would go through to SIEM. 
    They could be filtered there, but potentially used in correlation rules or troubleshooting, but that obviously takes more space in the McAfee (ePO) database and the SIEM solution, which needs to be taken into account.
    Thoughts on this would be greatly appreciated - I genuinely wish I knew more about this subject!
    Cheers,
    Darren

    Hi,
    I am not sure what specific information you are looking for - could you clarify?  I think I have covered the majority of what is happening in my initial post, however if there is a specific bit of information you are after, let me know.
    The above is an article I had stumbled across, with the majority of the information contained in the link included in my initial post.  The final paragraph under 'could this process be a virus' is interesting - I have copied it below - from your perspective
    is this merely anecdotal or is there something behind it (references, if they exist, would be fantastic)?
    "As long as you make sure that the location of the file is in your Windows\System32 directory, you aren’t dealing with a virus. There have been cases of certain viruses trying to mimic the same filename, but they are always located in another directory."
    - source: http://www.howtogeek.com/howto/windows-vista/what-is-svchostexe-and-why-is-it-running/ , 09/01/15

  • Windows Server 2008 X64 - gpupdate takes 10min - svchost.exe (gpsvc) pid logs 8.5 million events in procmon

    Hello,
    We've seen that on our 2008 x64 servers the svchost.exe that holds gpsvc in it takes up alot of CPU-time. Upon further investigation I saw that when it refreshes policies it holds 1 core for 10 minutes. I setup a procmon and filtered it on the pid off the gpsvc-svchost and saw that it logged 8.5 million events.
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    We are using GPPreferences. Has anyone seen anything like this before?
    I have the .PML-file from procmon, however its 350MB zipped so I dont know how to attach it to case.

    Hi,
    To better understand the issue, please help confirm the following:
    1.    Do all computers encounter this issue?
    2.    When did this issue begin to occur? Did it coincide with any events, such as the installation of some software?
    Meanwhile, please perform the steps below to see if the issue goes away:
    1.    Delete the contents in the "C:\ProgramData\Microsoft\Group Policy\History\" folder.
    2.    Please perform a clean boot on the server:
    1)    Click Start, type msconfig in the Start Search box, and then press ENTER.
    2)    On the General tab, click Selective Startup.
    3)    Under Selective Startup, click to clear the Load Startup Items check box.
    4)    Click the Services tab, click to select the Hide All Microsoft Services check box, and then click Disable All.
    5)    Click OK.
    6)    When you are prompted, click Restart.
    If the issue continues, please help collect the following information for further research:
    1.    Enable gpsvc.log:
    Please create the following key in Registry Editor:
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Diagnostics
    Type: DWORD
    Value: GPSvcDebugLevel
    Data: 0x30002 (hexadecimal)
    2.    Please run gpupdate /force to reproduce the issue and then collect MPSReport on the server:
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    2) Double-click the executable to launch the report gathering tool on the computer.
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    3.    After that, please zip the gpsvc.log (%windir%\debug\usermode\gpsvc.log), MPSReport and the PML.file and upload to the following space:
    https://sftasia.one.microsoft.com/choosetransfer.aspx?key=ef4b8b4e-0e6c-4774-a132-2d072f8b77b0
    Password: fQxbhTjUV
    More Information about MPSReport:
    http://blogs.technet.com/askperf/archive/2009/05/01/two-minute-drill-the-new-mps-reports.aspx
    This posting is provided "AS IS" with no warranties, and confers no rights.

  • Windows Server 2008 R2 - When svchost.exe memory-leaks Outlook does not load properly

    Hi all,
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    WinHttpAutoProxySvc
    W32Time
    Netprofm
    FontCache
    EventSystem
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    svchost is hosting multiple services. when the issue occurs you can use sysinternals procmon (or enable the command line column in task manager process tab) to view to determine which service is using that much memory.
    MCP/MCSA/MCTS/MCITP
    Did you read my whole post, or did you just misunderstand the part were I wrote:
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    NSI
    WinHttpAutoProxySvc
    W32Time
    Netprofm
    FontCache
    EventSystem"
    I know that svchost.exe runs ALOT of services, so when the problem occurred I checked which services the specific svchost.exe runs. Everytime it happens the svchost.exe (which leaks and has 2-3GB mem usage) runs this specific services.

  • SVCHOST.EXE Overflow and WMI Crash

    Hello, collegues!
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    KB2465990
    KB2492536
    KB982293
    KB974930
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    Since no one has answer this post, I recommend opening  a support case with CSS as they can work with you to solve this problem.
    Garth Jones | My blogs: Enhansoft and
    Old Blog site | Twitter:
    @GarthMJ

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