Trying To Add Some Performance Counters To Website?
Jan 12, 2010
I'm trying to add some performance counters to my asp.net website. Now, I know how to increment/decrement some custom counter I make .. but my problem is that if I get my ASP.NET website to create these counters, if they do not exist (eg. i do this check in the global.asax App start method) then add/create them.
But, it doesn't work - access to the registry is denied/forbidden.
I'm assuming this is because the asp.net process is so stripped down (for security) that u can't touch that type of thing. Therefore, i'm wondering if the only other solution is to make a quick console or winform app which does one thing -> add's the perf counters. running this as my normal logged in user would me i have admin rights, so it will work. or is there something else i can do?
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May 12, 2010
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Apr 29, 2010
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Mar 20, 2011
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Feb 26, 2011
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May 20, 2010
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Mar 14, 2011
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Oct 12, 2010
I'm trying to make a decision about how to display my data. What I have now is a list of products displayed in a repeater. But for code-maintenance I've put my product items in a seperate usercontrol and loading them in a loop with db results using LoadControl.The product control itself is very simple, just a few public properties like title, url, rating but I'm not sure if this will affect my performance. I did some reading here and on forums and some people say it's not the best practice especially if you have more then 20 or 30 of these controls. So, is it really a performance hit using this method or does it stay ok with around 10.000 hits a day.
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Feb 16, 2011
I have developed a gridview which has displays 8,000 records. However, the user is compaining that it is too slow. A major function of this gridview is to filter on two of the columns. It seems to me that if the records were stored in memory it would be much faster. This is caching, I think. Is that the case? Since filtering is being done I don't think custom paging will help much. When they submit a filter, with custom paging wouldn't the entire table be read again? So I was thinking of trying caching which is available on SQL Server. Am I on the right track? Can you cache with an Access database? Can you think of any other ways to improve performance of a gridview?
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Jul 29, 2010
I did not post this in database forum because the data will run on an asp.net site.I have 3 solution in my mind and i would like some opinions.What i want to do is create a parent-child relationship on 2 controls.A listbox and a textbox.I will populate the listbox with data(this is taken care of so ignore) and what i want to do is when i click on an item in the listbox then the textbox to show it's joined related item(one item only).This is not a problem in windows forms app but in asp, since i'm new i don't know what would be better for a faster retrieval on the page.So the 3 options i have in mind are:
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Nov 19, 2010
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
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Nov 12, 2010
Performance testing best practices for an ap .net application
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