Web Forms :: How To Know Application Performance Tips
Mar 14, 2011Let me know asp.net application performance tips..
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Mar 17, 2010I am developing a site similar to forums. I allow users to Post articles and upload files regarding the articles. I am not storing the Attachments contents in DB instead i store only the path of the attachment file and store the actual file in physical folder in the Project directory. WHat i want to knw is if the size of the physical folder increase will it affect the performance of my application.
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View 2 RepliesPerformance - Application Slow But CPU Is At 40% Max?
Nov 19, 2010I 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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May 19, 2010how to add a line break inside a tool tip.
I've got the following text: 'Orders made by this person: 78 Country of delivery: USA'
And I would like it to look like this: 'Orders made by this person: 78
Country of delivery: USA'
How can I do this?
ps. I'm using C# and Visual Studio
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What are some tools that can help me determine the cause of the slow speeds, and any recommendations as to how to speed it up, or potential issues that could cause it?UpdateSo I messed around with the code piece by piece as I wasn't getting anywhere with these tools. As soon as I remove master pages, and I include the same code that's on the master pages in the .aspx page itself, the speed improves drastically (approximately 5 times faster load times).What might cause the master pages to cause load times to slow down so much?
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Feb 11, 2010I was recently asked to speed up a C#/ASP.NET/SQL Server business app website. Since I just started, I don't know too much about the internals. So where do I start? Sight unseen, what is the single most important thing affecting performance on a system like this? Database tuning? Hardware? Individual page optimization? What is the first thing you'd look at? EDIT: After I actually do the work, I'll come back and post the answer. ;)
EDIT again: "Profile" is currently the most-voted answer, and I agree that that is clearly what one should do. But I was looking for guesses/experience as to what the profiling results would show, so I don't think that answer counts...
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Jan 12, 2011I have an existing web application developed in Asp.Net F/W 3.5 and a mobile version of the same need to be created.
May i have some suggestions on:
How can i start with?.Some links & sites that would give me more clarity on how to approach this requirement. Is there any ASP.Net/iis features or Visual Studio option that ease this mobile version creation? As there are RadControls & Ajax used throughout the application, what should i be careful about? Will it require every form in the UI to be replaced and take the same time as the old UI creation? What all thinks should i be considering in the performance/optimization point of view?.
