Response Time Monitor In Application And Dynamic Performance Management?
Sep 6, 2010
I want to implement a response time monitor in a ASP.Net application. This monitor has to calculate the average response time during 2 secs. Whats the performance counter i can use. I tried ASP.NET ApplicationsRequests/Sec but did not work. Whats the best way to do this. I am using the default server formed by VS2005 for development, does this affect the performance counter programming?
Where should I implement the logic? Global.ASAX? in every 2 sec i want to check this value and make some decisions.
In addition, what are the parameters I can alter in a ASP.Net application at runtime to improve perfromance. How can I change them?
isnt there performance analysis tools that i can use to monitor and trouble shoot things like timeout expired (slow query execution)?
I mean is there a way for me to monitor the query performance as it is run from the webpage. It runs perfectly in the SMS but it's slow when it's running from the webpages so it throws Timeout expired exception.
I am dynamically creating a table of checkboxes on my test.aspx page. The dimensions (row and column count) of the table are determined by querying the database. In test.aspx page, I do the following:
<script language="C#" runat="server"> protected void Page_Load ( object src, EventArgs e ) { //Query the database to get the data for rows and columns CheckBox[] chkBox = new CheckBox[rows * columns]; //creates a collection of checkboxes //Iterate over the query set in a double for loop to create dynamic checkboxes } </script>
Right now I have the number of rows=20 and columns=10, but it can increase (with the columns more likely). I used the Net tab in Firebug to ascertain the time taken by different events and found that GetTest.aspx is taking close to 4 minutes, which is too long a time to wait. Is there a way to being down the page load time? Is my approach to create dynamic check boxes correct?
I have a producer-consumer scenario in ASP.NET. I designed a Producer class, a Consumer class and a class for holding the shared objects and responsible for communication between Producer and Consumer, lets call it Mediator. Because I fork the execution path at start-up (in parent object) and one thread would call Producer.Start() and another thread calls Consumer.Start(), I need to pass a reference of Mediator to both Producer and Consumer (via Constructor). Mediator is a smart class which will optimize many things like length of it's inner queue but for now consider it as a circular blocking queue. Producer would enqueues new objects to Mediator until the queue gets full and then Producer would block. Consumer dequeues objects from Mediator until there's nothing in the queue. For signaling between threads, I implemented two methods in Mediator class: Wait() and Pulse(). The code is something like this:
Class Mediator { private object _locker = new object();[code]....
Inside Mediator I use this.Pulse() every time something is Enqueued or Dequeued so waiting threads would be signaled and continue their work.But I encounter deadlocks and because I have never used this kind of design for signaling threads, I'm not sure if something is wrong with the design or I'm doing something wrong elsewhere ?
I am not sure if this is the right forum. I can not find a forum for LINQ.
I am working on an application using LINQ. Application performance is not up to par and my tests show that it is LINQ queries that are slow. I was wondering if anybody can recommend where I can find an article about optimizing LINQ performance maybe by compilation or other methods.
Can I objectively determine if my production ASP.NET web application is resetting its application pool? It could be for whatever reason (for example, an error occurred or memory topped off). I don't have direct access to my production servers, so when I want something on the server, I have ask specifically for it like PerfMon counters to run. It is a running IIS 6.0. I understand that I could use PerfMon to catch ASP.NET Application Restarts. If I was not monitoring that PerfMon, is there anything that can tell me the application restarted sometime in the past?
When my Application face a long-time process, i.e fetch a query (SELECT a, b, c FROM d)This query needs 10 seconds to be completed in the MSSQL Management Studio, but when the ASP.NET application try to fetch it, it refuse to return any response to any other requests made on that Server.
I am hosting my Application on VPS Server with good specifications, and I am giving this example the (SELECT a, b, c FROM d) just to tell you the issue, it can be any process, maybe processing a movie, or even fetching some data through external API that is experiencing some slow-down,or whatever.
I was wondering if anyone had experience they could share using the Response.IsClientConnected property as a performance optimization for asp.net websites.
The reason I ask is that I am a bit skeptical on how effective it would be in real life scenarios. I understand the concept of checking the value before performing a large task but I just can't see how useful this would be as clients could disconnect at any point time.
I have a web performance test which contains a request whose response is greater than 5MB, and the Extract Hidden Fields rule fails to find (necessary and required!) hidden fields in the response. Response header contains
HTTP/1.1 200 OK Transfer-Encoding : chunked Vary : Accept-Encoding, User-Agent Cache-Control : private Content-Type : text/plain; charset=utf-8 Date : Sat, 19 Feb 2011 15:24:38 GMT Server : Microsoft-IIS/6.0 X-AspNet-Version : 2.0.50727 X-Powered-By : ASP.NET
Other than that and the response size, there is nothing remarkable about this scenario. In fact, this same test succeeds when a smaller data set is used. I suspect the Web Performance Test framework is having issues parsing the "chunked" encoding or sheer volume of data. Ahem, how can I obtain these required hidden fields from my response? ie resolutions, work arounds, converting auto-extraction to manual, etc.
The first and third view are simple now.The second view contains a user control AgreementDetailUC, which dynamically loads many other user controls onto several dynamically created tabs, as show below
When <Next> and <Previous> button is clicked, it take several seconds to show the second view. Page_Init is run very fast, it seems the time is spent on rendering the page.
My questions are:
1. How can the performance be improved?
2. How to change the cursor to hour glass when a button is clicked and change it back when the new view is shown (I can set it to hour glass when a button is clicked, but don't know how to set it back to normal).
I have been playing around with loading user controls in a CMS style where I can change the position and order. I have come up with this...
[Code]....
It all works fairly well - but I have alot of propertys in my user control code behinds where I could inject values into the usercontrol from my base class.
I like the way I can position usercontrols from the DB, I even added a time and date section where they could be switched on and off per day or time.
If I make every user control access the DAL for the data, it means i will have one select per user control, which means including my bassclass I could have upto 15 selects (visits tot he DB) to make the front page. Though this does not seem to make a performance problem, I was wondering if there was a better way of doing this.
I have a select query where iam fetching the data from minimum of 7 different tables by using innerjoin. I have 3 lakhs of records in that table.BY using cache Iam fetching all 3lakhs of records at a time and put in cache. by using the rowfilter i use the records.firsttime when iam fetching these 3lakhs records it takes 3min. want to improve the performance of time.How to improve the performance of time?
I have some serious performance Issues with Windows controls loading first time on IE Browser then subsequent request's. When ever i open Browser first time , mywebsite takes 7 seconds to load, but on subsequent request without closing browser it loads with-in 2 seconds.I Knew IIS on first time it re-compiles the process and for subsequent request's it wont perform and it cahches .I'm looking for better options to improve performance, when ever first time reqest's comes to web server.
On IIS 7 Server,I was using both Dynamic and Static compression enabled.Also,On application pool ,I set "ShutDown Time(Limit)" and "Startup Time(Limit") to 90 (seconds).Here is web.config i disable below to improve performance issues.
is my session related tag in web.config file but most of the time if i idle 20 minutes then its automatically timedout and went to my login page, is there any solution ?
I have selected around hundred data and then bind to the repeater each times it take a long time to save data after clicking the save button. How can i improve the performance?
I have a strange situation on a production server. Connection for asp.net get queued but the CPU is only at 40%. Also the database runs fine at 30% CPU.
Some more history as requested in the comments:
In the peak hours the sites gets around 20,000 visitors an hour. The site is an asp.net webforms application with a lot of AJAX/POSTs The site uses a lot of User generated content We measure the performance of the site with a testpage which does hit the database and the webservices used by the site. This page get served within a second on normal load. Whe define the application as slow when the request takes more than 4 seconds. From the measurements we can see that the connectiontime is fast, but the processing time is large. We can't pinpoint the slowresponse the a single request, the site runs fine during normal hours but gets slow during peak hours We had a problem that the site was CPU bound (aka running at 100%), we fixed that We also had problems with exceptions maken the appdomain restart, we fixed that do During peak hours I take a look at the asp.net performance counters. We can see behaviour that we have 600 current connections with 500 queued connections. At peak times the CPU is around 40% (which makes me the think that it is not CPU bound) Physical memory is around 60% used At peak times the DatabaseServer CPU is around 30% (which makes me think it is not Database bound)
My conclusion is that something else is stopping the server from handling the requests faster. Possible suspects:
Deadlocks (!syncblk only gives one lock) Disk I/O (checked via sysinternals procesexplorer: 3.5 mB/s) Garbage collection (10~15% during peaks) Network I/O (connect time still low)
To find out what the proces is doing I created to minidumps.
I managed to create two MemoryDumps 20 seconds apart. This is the output of the first:
!threadpool CPU utilization 6% Worker Thread: Total: 95 Running: 72 Idle: 23 MaxLimit: 200 MinLimit: 100 Work Request in Queue: 1 Number of Timers: 64
and the output of the second:
!threadpool CPU utilization 9% Worker Thread: Total: 111 Running: 111 Idle: 0 MaxLimit: 200 MinLimit: 100 Work Request in Queue: 1589
Web forms .NET application, is starting to meet 64 bits Windows servers and we have a 32bit DLL from one of our component vendors (its a hardware key, actually). I checked the instructions here "compiling a .net application with either a 32-bit or 64-bit dll". It is also what our vendor sugested. question: is there a performance impact on compiling a web application to run on x86 mode ?Please don't flame me for using a hardware key
I have a ASP.NET web application (.NET 2008) using MS SQL server 2005, I want to increase the performance of the web site, If anyone have an article contains steps to do that, step by step , In SQL(Indexes, ..... etc.) and in the code.
