> Forums > Active Forums > Community Support > 100% CPU Usage and Scheduler Timeout..
Last Post 05 Nov 2010 04:20 PM by Frozen DNN. 21 Replies.
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Frozen DNN
Customers
Frozen DNN
Post Count:1311

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26 Feb 2010 04:58 PM
    First of all, I am truly sorry for posting this here, if it's a wrong forum. Second of all I do not think I need to open a support ticket for this one. But I do want some help and advice so I am posting it here.

    Please see this thread:

    http://www.dotnetnuke.com/Community...fault.aspx

    and kindly tell me what I should do to avoid the 100% cpu usage.

    Thank you for your time.
    I am using the latest AS/AF/DNN available.
    Thanks.
    Dan Ball
    Customers
    Dan Ball
    Post Count:582

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    27 Feb 2010 11:36 AM
    Have you tried disabling each of the scheduled tasks to see if the CPU usage drops?
    Steven Webster
    Customers
    Steven Webster
    Post Count:1661

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    27 Feb 2010 04:00 PM
    If you have terminal server access to the machine I would recommend running performance monitor. See what is running and what is using the most CPU. A lot of times hosted plans install a standard "image" box and you might be running a whole lot of stuff you don't need.

    Once you have eliminated "extra" applications (if you have access/permissions you can turn them off in services) then you can see which applications is taking the the remaining CPU utilization. Generally speaking the worker process and SQL Server take up the most on an DNN installation.

    If SQL is pegged this could mean you have a loop or runaway process. This can be caused by anything and you might be troubleshooting SQL code to resolve.

    Also - if you have access to perfmon check your memory utilization....is the server paging memory because you've run out of RAM?

    Looking at your numbers it does not seem like you DNN install is large enough (84 tabs) to cause some of the larger DNN site problems I've seen with hundreds of portals and thousands of tabs on one DNN install....but that said we run one box with 280 portals and over 50,000 tabs...it's slower than it could be but it's stable.


    Steven Webster
    dnnOsphere.com, An Independent Community for DotNetNuke Users
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    12 Mar 2010 04:01 PM
    I don't think I have access to monitor all those things. Plus I wouldn't know how to do it.

    Here is my DNN Pro plan from 3essentials. It has the following specifications:

    Disk: 40 GB
    RAM: 1 GB
    Transfer: 2000 GB
    CPU - 100% 1 Core
    IP Addresses - 2
    Plesk - 10 Domains w/ PowerPak

    I am still having the problems Now they want me to add 50% core ($50/month)
    I am using the latest AS/AF/DNN available.
    Thanks.
    Dan Ball
    Customers
    Dan Ball
    Post Count:582

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    12 Mar 2010 05:32 PM
    The VD 100 plan (according to the 3essentials website) does support RDP, which is what you'll need to log in and see what is going on. It's a Windows Server, so 99% of things are troubleshot the same way as you would on your local computer (provided you're running XP or a newer MS OS).

    To see what processes are eating up your CPU time, use the Task Manager. If you want long-term statistics, use the Reliability and Performance Monitor, which is in your Administrative Tools menu. If you have trouble finding your way around the server, let me know and I'll do what I can to help.
    Tareq
    Customers
    Tareq
    Post Count:439

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    12 Mar 2010 05:40 PM
    That is more than enough resource for running a DNN site. You do have a lot's of module installed. One of them may have a memory leak. Buying more resource may be a waste of money. Sooner or later you need to find your problem.

    What server OS do you have?
    What version of DNN?
    What is your traffic load?
    Does your site go down time to time?
    Is your SQL on the same box? Express or Full Version?

    Log into your machine when your CPU goes to 100% go to task manager and see is taking the most resource for CPU and also Memory. It is hard to suggest anything without knowing all details.

    Tareq
    Customers
    Tareq
    Post Count:439

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    12 Mar 2010 05:41 PM
    oops sorry I see have posted more details on DNN website. Sorry did not see the details...
    Will Morgenweck Forum Admin
    DotNetNuke Staff
    Will Morgenweck
    Post Count:7666

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    12 Mar 2010 05:49 PM
    Your site is having email problems. Truncate the activeforums_queue table. This will prevent all those messages from being sent, but that could be your bottleneck.
    
    truncate table {databaseOwner}{objectQualifier}activeforums_Queue
     


    Also, utilizing 100% cpu really depends on how much cpu they are actually providing. If you were telling me that your site was on a dedicated server with a 3.x ghz processor then I could see a problem. However, if you are on a shared hosting or VPS then pegging the processor is very subjective.
    Will Morgenweck
    Director of Product Management
    DotNetNuke Corp.
    Dan Ball
    Customers
    Dan Ball
    Post Count:582

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    12 Mar 2010 10:25 PM
    Also, considering the description of the plan he has specifically says he has 100% of that CPU reserved for his server, it is a bit strange of a complaint. If it is a Hyper-V system, then 100% of the CPU could mean a variety of different things.
    Steven Webster
    Customers
    Steven Webster
    Post Count:1661

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    12 Mar 2010 10:54 PM
    Fozen - if you turn off the mail connector schedule does CPU util drop?
    Steven Webster
    dnnOsphere.com, An Independent Community for DotNetNuke Users
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    16 Mar 2010 07:39 PM
    I am sorry for not responding sooner. Got busy. I am trying everything you guys have asked me to do.

    Will - I tried the script but that did not help. There are still time outs and my website slows down a lot.

    The VD 100 plan (according to the 3essentials website) does support RDP, which is what you'll need to log in and see what is going on. It's a Windows Server, so 99% of things are troubleshot the same way as you would on your local computer (provided you're running XP or a newer MS OS).

    To see what processes are eating up your CPU time, use the Task Manager. If you want long-term statistics, use the Reliability and Performance Monitor, which is in your Administrative Tools menu. If you have trouble finding your way around the server, let me know and I'll do what I can to help.


    @ Dan: They told me I cannot login and see what's going on because it's a managed server?

    Steven: I have disabled the MC, there are no time out errors related to MC but my website still slows down.

    Also, I am very sorry that I did not mention this earlier but my plan (server) hosts 8 dotnetnuke installs.

    The 3 essentials team wants me to add another 50% cpu or reduce the load on the server.

    I also asked Mitchel Sellers to look at my database but he think my database does not have a problem. According to him it's the DNN problem and he suggested I talk to Will about the MC time out errors. He made some changes to the settings but that only worked for couple of days.

    Everything is back to normal now i.e. 90-100% cpu usage and my websites takes 5 minutes to load.
    I am using the latest AS/AF/DNN available.
    Thanks.
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    16 Mar 2010 11:54 PM
    Now this(although I doubt this is the reason for 100% cpu usage):
    DotNetNuke.Services.Exceptions.ModuleLoadException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(String connectionString, String spName, Object[] parameterValues) at Active.Modules.Forums.SqlDataProvider.Search_Standard(Int32 PortalId, Int32 ModuleId, Int32 UserId, Int32 ForumId, Boolean IsSuper, Int32 RowIndex, Int32 MaxRows, String SearchString, Int32 MatchType, Int32 SearchField, Int32 Timespan, Int32 AuthorId, String Author, String Forums, String Tags) at Active.Modules.Forums.af_search_new.BindPosts(Int32 Column, String Sort) at Active.Modules.Forums.af_search_new.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---
    I am using the latest AS/AF/DNN available.
    Thanks.
    Will Morgenweck Forum Admin
    DotNetNuke Staff
    Will Morgenweck
    Post Count:7666

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    17 Mar 2010 12:04 AM
    Are your databases also hosted on this same server?
    Will Morgenweck
    Director of Product Management
    DotNetNuke Corp.
    Will Morgenweck Forum Admin
    DotNetNuke Staff
    Will Morgenweck
    Post Count:7666

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    17 Mar 2010 01:47 AM
    Frozen, long story short...you don't have enough hardware. You are on a virtual machine with 1 gb of ram running Windows Server, IIS, SQL Server, MailEnable and probably a few other utilities like antivirus, etc.

    Everything is slow on your site, even with everything in the scheduler disabled. It took almost 6 minutes to load your host settings page. It took over 3 minutes for the mailconnector to simply connect to your mail server. That should never take more than 3 seconds when there are no messages to process. I doubt you have just one thing eating up the processor. I would bet that you have several apps begging for processor and memory. When that happens you end up with more hard disk I/O, which in a virtual server environment is usually a problem to begin with.

    Before you consider more hardware, ask your hosting provider to check your databases and see if the "auto close" is set to True. If it is, ask them to switch it to false. You may even want to consider using another mail service and even your hosting provider's database server.

    Will Morgenweck
    Director of Product Management
    DotNetNuke Corp.
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    17 Mar 2010 02:06 AM
    Thank you very much for checking it out. I really appreciate that.

    I have emailed 3essentials.

    Also, can your please explain more about this "You may even want to consider using another mail service and even your hosting provider's database server."

    Like which email service? And, what do you mean by "even your hosting provider's database server?" Do you mean host my database somewhere else?

    I am sorry about these simple questions but I don't know, honestly.

    Thanks again.

    I am using the latest AS/AF/DNN available.
    Thanks.
    Steven Webster
    Customers
    Steven Webster
    Post Count:1661

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    17 Mar 2010 06:16 AM
    Frozen,
    You can split the web server (IIS) from the database server (SQL) as well as mail (SMTP) up onto three desperate hosting servers. For example:

    SERVER 1 for IIS
    SERVER 2 for SQL Server
    SERVER 3 for mail.

    In my case I do run IIS and SQL on the same server, but I also have a dual zeon processors with 6G of RAM. I also use a separate mail server (Smarter Mail behind a barracuda mail firewall) since SMTP on IIS is pretty lame. Eventually Ill move SQL onto another server but this works for now.



    All of this is is dedicated. I co-locate these servers in our rack at a local data center. Generally speaking I get 1 - 3 second page generations.
    Steven Webster
    dnnOsphere.com, An Independent Community for DotNetNuke Users
    Dan Ball
    Customers
    Dan Ball
    Post Count:582

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    17 Mar 2010 08:44 AM

    Also, I am very sorry that I did not mention this earlier but my plan (server) hosts 8 dotnetnuke installs.


    Yeah, this was a pretty important item to mention. One install with those hardware specs is pushing the limits, 8 installs is just too much.

    Offloading your SQL to a different server will ease some of the strain, but will introduce different problems with connectivity. Does your host provide a free SQL server (outside of your current server), or will they make you purchase a second plan for that? Apparently they are not following their posted plan details, so I cannot tell by their website.




    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    18 Mar 2010 08:39 PM

    Posted By Dan Ball on 17 Mar 2010 08:44 AM

    Also, I am very sorry that I did not mention this earlier but my plan (server) hosts 8 dotnetnuke installs.


    Yeah, this was a pretty important item to mention. One install with those hardware specs is pushing the limits, 8 installs is just too much.

    Offloading your SQL to a different server will ease some of the strain, but will introduce different problems with connectivity. Does your host provide a free SQL server (outside of your current server), or will they make you purchase a second plan for that? Apparently they are not following their posted plan details, so I cannot tell by their website.


    Sorry dude.

    I have these apps running on my server

    - IIS
    - MSSQL
    - MySql
    - Plesk Control panel
    - All the default Windows System applications.

    'Auto Close' was always set to False.

    They are saying only two things are possible.
    Error in the code or Low resources.

    I am leaning towards low resources now because MC time out error is occurring in the other two websites too.

    I am using the latest AS/AF/DNN available.
    Thanks.
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    18 Mar 2010 08:41 PM

    Posted By swebster on 17 Mar 2010 06:16 AM
    Frozen,
    You can split the web server (IIS) from the database server (SQL) as well as mail (SMTP) up onto three desperate hosting servers. For example:

    SERVER 1 for IIS
    SERVER 2 for SQL Server
    SERVER 3 for mail.

    In my case I do run IIS and SQL on the same server, but I also have a dual zeon processors with 6G of RAM. I also use a separate mail server (Smarter Mail behind a barracuda mail firewall) since SMTP on IIS is pretty lame. Eventually Ill move SQL onto another server but this works for now.



    All of this is is dedicated. I co-locate these servers in our rack at a local data center. Generally speaking I get 1 - 3 second page generations.


    Thank you. I will see whether I can do this. It's getting pretty expensive since I am not making any money off these websites. I think I should start asking for donations from my members.
    I am using the latest AS/AF/DNN available.
    Thanks.
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

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    05 Nov 2010 03:54 PM
    I still have these issues, even after moving to PowerDNN and getting a better server. I have spoken with few db experts and they all say something is wrong with the forum.  Yesterday, my db size jumped from 200mb to 900mb. I have shrunk the db and did the other truncate things but no change.

    Do you see anything abnormal in the table below? Please let me know.

    Thanks.



    tableNamenumberofRowsreservedSizedataSizeindexSizeunusedSize
    Skins490 200 KB128 KB16 KB56 KB
    UrlLog474 32 KB16 KB16 KB0 KB
    sysdiagrams0 0 KB0 KB0 KB0 KB
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    HtmlTextLog43 16 KB8 KB8 KB0 KB
    ifty_Site404Log0 0 KB0 KB0 KB0 KB
    activesocial_Gallery_Album18 16 KB8 KB8 KB0 KB
    activesocial_Log922531 37384 KB37264 KB80 KB40 KB
    TabPermission315 136 KB24 KB112 KB0 KB
    activeforums_Topics_Ratings12 16 KB8 KB8 KB0 KB
    HtmlTextUsers0 0 KB0 KB0 KB0 KB
    DynamicRegistration_QuestionLocalization0 0 KB0 KB0 KB0 KB
    UserPortals4540 344 KB152 KB160 KB32 KB
    DnnForge_NewsArticles_Article1042 2832 KB2688 KB16 KB128 KB
    ModuleControls257 192 KB64 KB72 KB56 KB
    activeforums_Topics_Tags0 0 KB0 KB0 KB0 KB
    DynamicRegistration_Wizard33 16 KB8 KB8 KB0 KB
    FolderPermission5386 1136 KB328 KB576 KB232 KB
    activeforums_Topics_Tracking56280 3792 KB2288 KB1392 KB112 KB
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    ContentItems_Tags0 0 KB0 KB0 KB0 KB
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    Version39 32 KB8 KB24 KB0 KB
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    I am using the latest AS/AF/DNN available.
    Thanks.
    Will Morgenweck Forum Admin
    DotNetNuke Staff
    Will Morgenweck
    Post Count:7666

    --
    05 Nov 2010 04:13 PM
    I have spoken with few db experts and they all say something is wrong with the forum.

    How were they able to come to this conclusion?


    Active Forums is using about 100mb in the database. Nothing looks out of the ordinary. I'm guessing your transaction log is making the database appear larger than it really is. If database size is causing you a problem then you should get one of your db experts to help you configure your database so it is properly backed up and the transaction log cleared on a daily basis. Power DNN should actually be able to do this for you as well.
    Will Morgenweck
    Director of Product Management
    DotNetNuke Corp.
    Frozen DNN
    Customers
    Frozen DNN
    Post Count:1311

    --
    05 Nov 2010 04:20 PM
    I honestly do not know how they come to that conclusion.  I will talk to PowerDNN about the transaction log.

    Thanks for the quick response.
    I am using the latest AS/AF/DNN available.
    Thanks.
    You are not authorized to post a reply.
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