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Lock statistics

Posted By:      Posted Date: September 02, 2010    Points: 0   Category :Sql Server
Hope this is the correct forum. I know you can collect real-time information about locks. But are there any historical data that can be fetched per database?

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Lock statistics

Hope this is the correct forum. I know you can collect real-time information about locks. But are there any historical data that can be fetched per database?

Concurrent Affairs: Build a Richer Thread Synchronization Lock


In my last column, I showed the various thread synchronization mechanisms employed by the Microsoft® . NET Framework (see Concurrent Affairs: Performance-Conscious Thread Synchronization). I then examined the performance characteristics of all these mechanisms and determined that the Interlocked methods performed the best because the calling thread never has to transition to kernel mode.

Jeffrey Richter

MSDN Magazine March 2006

Memory Models: Understand the Impact of Low-Lock Techniques in Multithreaded Apps


Because the use of low-lock techniques in your application significantly increases the likelihood of introducing hard-to-find bugs, it is best to use them only when absolutely necessary. Here Vance Morrison demonstrates the limitations and subtleties low-lock techniques so that if you are forced to use them you have a better chance of using them correctly.

Vance Morrison

MSDN Magazine October 2005

C++ Q&A: Performance Monitoring, Managed Extensions, and Lock Toolbars


In the June 2004 issue of MSDN®Magazine, I described a class called ShowTime that you can use to do simple performance monitoring for your app. ShowTime uses its constructor/destructor to record the start/stop times of its existence so you can instantiate it in a block of code like so: { ShowTime st(_T("Total time is:")); // some lengthy operation } .

Paul DiLascia

MSDN Magazine September 2004

Team System - VS2008 -- Performance testing statistics


Dear all,


I am new to using performance testing in team system VS2008.

Could you tell me that What is the steps needed in VS2008 to create performance testing if I have the Web Application Source Code??

So that I can know where or which function need the most time. 

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Maintenance Update Statistics plan

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Why does RowLock result in a Page Lock

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Cannot lock request 254,023

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HiI want for my siteThe statistics doThat is includedWho What IP address and what country and what the link is to enter my websiteChart and graph Monthly StatisticsGet statistics from search engineWhat a person looking for the word searchCountry name and profile resolution and operating systems and browsers can also be seenI have this codeBut all I need is not completePrivate Sub Application_Start(sender As Object, e As EventArgs) ' Code that runs on application startup Application("OnlineUsers") = 0 ' Code that runs on application startup End Sub Private Sub Session_Start(sender As Object, e As EventArgs) ' Code that runs when a new session is started Application.Lock() Application("OnlineUsers") = CInt(Application("OnlineUsers")) + 1 Application.UnLock() End Sub Private Sub Session_End(sender As Object, e As EventArgs) ' Code that runs when a session ends. ' Note: The Session_End event is raised only when the sessionstate mode ' is set to InProc in the Web.config file. If session mode is set to StateServer ' or SQLServer, the event is not raised. Application.Lock() Application("OnlineUsers") = CInt(Application("OnlineUsers")) - 1 Application.UnLock() End Sub

Sharepoint sub site lock

How to lock Sharepoint 2007 sub site.I used stsatm-o setsitelock it locks site collection. I want to lock only particular site only. Ex: If i want to lock http://sharepoint/site1 only lock on site1 not for Http://sharepoint Please suggest me object model code for this. Thakns Anil  

Job Execution times / statistics report ...

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Unknown error trying to lock file

Hi This error may have been reported in the forum before. If so I apologise for asking again, but I just can't find any reference to it (or any solution).This is using IE7, Vista Business 64bit, Word 2007To summerise: (step by step)1. We log into Sharepoint (from remote locations)2. We locate the list containing items with attached documents3. Selecting the document gives the "harmful..." message4. Microsoft Word loads up with a certificate warning (which we accept)5. We then are prompted to log in a second time.6. It then prompts with a certificate ("Select Certificate") dialog. (We select OK 3 times)7. Word opens the document in Reader view8. Document reports "Server document" at the top of the screen next to the "Edit Document" option.9. Choose "Edit Document"10. and we get "Unknown Error trying to lock file".The same sequence of events using Windows XP has no problems.Switching back to XP is not an option.Various threads scattered through the internet talk of various solutions from port numbers to running Word in XP sp2 compatible mode. None of these solve the problem. Can someone give me some indication of what is going wrong here. I'm not completely up to speed with sharepoint, but if you ask the questions, I'll dig out the answers.Best regardsRobert

SQL server 2005 lock requests/sec rising linearly non-stop

While running an application load test, I am observing some weird behavior. Lock requests/sec counter is increasing in a linear fashion throughout the whole test (duration 12 hours, load levels off to a constant level within first 10 minutes). The value reached 6 million at 12 hours. There was no apparent impact to the response time of the application. There was also no impact to lock wait time (200ms average). Database CPU slowly increased from 20% to about 30% at 12 hours. What could be causing such behaviour?
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