performance of application

I have Desktop application in vb.net and i wanted to converted that in web based but i want that performance of web application should be smart enough as desktop application . or at least close to that.
then what steps should i take to get performance in web application .ASPNet Performance (http://msdn.microsoft.com/msdnmag/issues/05/01/ASPNETPerformance/default.aspx)

High performance asp.net (http://authors.aspalliance.com/aspxtreme/webapps/developinghigh-performanceaspnetapplications.aspx)

Performance of an ASP.Net application

After reviewing the code and compiling the application as release
version, are there any other deployment and/or .Net CLR settings that
can be used to improve the application performance?Not really. You can tweak how IIS and ASP.NET work via the machine.config's
processModel, but I doubt you'll get much out of it.
IF you are seeing performance issues, caching using OutputCaching and the
Cache api as well as database tuning are generally good quick hits.
Karl
http://www.openmymind.net/
http://www.codebetter.com/
<robin9876@.hotmail.com> wrote in message
news:1162894730.222245.309590@.m73g2000cwd.googlegroups.com...
> After reviewing the code and compiling the application as release
> version, are there any other deployment and/or .Net CLR settings that
> can be used to improve the application performance?
>
Here is a Wonderful document which help you in improving the performance of
the application
http://www.microsoft.com/downloads/...&displaylang=en
Regards
Prabakar
"robin9876@.hotmail.com" wrote:

> After reviewing the code and compiling the application as release
> version, are there any other deployment and/or .Net CLR settings that
> can be used to improve the application performance?
>

Performance of an ASP.Net application

After reviewing the code and compiling the application as release
version, are there any other deployment and/or .Net CLR settings that
can be used to improve the application performance?Not really. You can tweak how IIS and ASP.NET work via the machine.config's
processModel, but I doubt you'll get much out of it.

IF you are seeing performance issues, caching using OutputCaching and the
Cache api as well as database tuning are generally good quick hits.

Karl

--
http://www.openmymind.net/
http://www.codebetter.com/
<robin9876@.hotmail.comwrote in message
news:1162894730.222245.309590@.m73g2000cwd.googlegr oups.com...

Quote:

Originally Posted by

After reviewing the code and compiling the application as release
version, are there any other deployment and/or .Net CLR settings that
can be used to improve the application performance?
>

Here is a Wonderful document which help you in improving the performance of
the application

http://www.microsoft.com/downloads/...&displaylang=en
Regards
Prabakar

"robin9876@.hotmail.com" wrote:

Quote:

Originally Posted by

After reviewing the code and compiling the application as release
version, are there any other deployment and/or .Net CLR settings that
can be used to improve the application performance?
>
>

Performance on images.

I have a web application which contains loads of images.

when I load from our hosted site, its pretty slow. i can see every image as they were loading. sometimes images do not display until they are used ( e.g. mouseover a certain image panel )

Question is. what is the best practice of handling images to boost performance? currently i just place my images in a folder and use CSS to reference them.

Will it improve performance to use Resource files instead?

thanks!

the only way i can think of is to cache the page, but the first still needs time as physically, people have to download the images no matter what.

Hi,

The way u r doing is common thing and i think its the right way also.
this problem may be becasuse of poor bandwidth. Anyway it will be better to use image will less KB's

thank you for your inputs. one thing more is that I heavily use server controls, which I'm not really sure if it has any effect on performance... taking out the ViewState factor...

I just have one thing to consider, if you are dealing with large images you can create thumbnails out of these images which will decrease its size and increase the loading speed.

Create Thumbnail Images

HC

can you elaborate on what you mean please??

do you mean to use the code your probided in ur blog to create thumbnail images.. and use these images instead?

The code provided will create a thumbnail image from the original image with specified width and height (100 px, 100px) which will decrease its size and make the load process better. for example if you have an image size equals to 6 mb when you create a thumbnail it will be 24 kb or even less.

So what yo u can do is to programatically using the provided code create an thumbnails save them in a folder on your web server and load them instead of using the original images.

HC

hi,

i've read your problem thru. and i think both the above two solutions can solve you problem. you can use output caching in ur page,setting theDuration time a little ralatively longer andLoctaionto be 'Any'. For more information you can refer to:

ms-help://MS.MSDNQTR.v80.en/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_aspnetcon/html/51149563-a347-4b2b-bdc2-57a317e12487.htm

Also you can follow haissam's suggestion to create thumbnail images for the original ones.

Well, i have another suggestion, you can choose to host your images to another web host( if you have got pretty pretty lots of images) which is much more powerful and stronger . This can make your access to the images much faster than now.

Hope my suggestion helps. :)

I appreciate all your responses. thank you very much.! =)

hi,

how do i open this link ? ms-help://MS.MSDNQTR.v80.en/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_aspnetcon/html/51149563-a347-4b2b-bdc2-57a317e12487.htm

The 100 px x 100px.. is that fixed? or just need to set it same with the original height and oeiginal width?

so if you have an image 1000px by 400px... just set it to these values?

another thing, i'm getting "A generic error occurred in GDI+" error when saving the thumbnail. any ideaS?

oh, i assumed that u have an msdn installed on your local computer. i'm sorry. you can still refer to :http://msdn2.microsoft.com/en-us/library/zd1ysf1y(VS.80).aspx

it's the same :)

Performance problem with asp.net and database connection

Hallo,

I have an ASP.NET application with masterpages, skins and diffrent themes.
The application works fine, but the performance is not realy good. If I load
an ASPX file, which has no database connection, is the performance ok. ASPX
file with one or more database queries have a answer time about 15 or 20
seconds. Each database query need maximal a second to give the answer. So
the query works ok!
Know you a reason, why the time with a database connection is so long? How
can I make my application faster?

Thanks for the answers and tips

ThomasHello Thomas,

Do you use connection pooling?!
Seems that your delay is the reason that no connection pooling is activated
and new connection takes some ammount of time to be initiated

--
WBR, Michael Nemtsev [.NET/C# MVP].
My blog: http://spaces.live.com/laflour
Team blog: http://devkids.blogspot.com/
"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo

THI have an ASP.NET application with masterpages, skins and diffrent
THthemes.
THThe application works fine, but the performance is not realy good.
THIf I load
THan ASPX file, which has no database connection, is the performance
THok. ASPX
THfile with one or more database queries have a answer time about 15
THor 20
THseconds. Each database query need maximal a second to give the
THanswer. So
THthe query works ok!
THKnow you a reason, why the time with a database connection is so
THlong? How
THcan I make my application faster?
On Tue, 3 Jul 2007 07:26:48 +0000 (UTC), Michael Nemtsev
<nemtsev@.msn.comwrote:

Quote:

Originally Posted by

>Hello Thomas,
>
>Do you use connection pooling?!
>Seems that your delay is the reason that no connection pooling is activated
>and new connection takes some ammount of time to be initiated

I was under the impession that connection pooling was activated by
default.

One bad thing about connection pooling is the default pool size is zero
- the number of permanently open connections.

* Add a "Min Pool Size" entry to your connection string. 5 seems a
suitable minimum pool size.

* Check all your database code to ensure that connections are closed
after being used. the "using" keyword is handy here as it limits the
scope of the connection. Although your app should just fail if this
isn't the case rather than just going slow.

* If you are using datasets - what happens when you have no data in the
dataset?
- make sure you check with something like
if ( rs != null ) ... before you try to access a dataset

* Consider using data caching for some of the data.

* Try not to use datasets when you don't need to. For instance accessing
a DataTable or, better some kind of generic list (e.g. List<T>) is
nearly always faster - this will often use a datareader to read the
actual data - there is no real syntax shortcut but it seems to always
exectute faster.

Read this: http://www.15seconds.com/issue/040830.htm
I can't add anything more to this as we really need to see the code
before commenting further.

Quote:

Originally Posted by

>THI have an ASP.NET application with masterpages, skins and diffrent
>THthemes.
>THThe application works fine, but the performance is not realy good.
>THIf I load
>THan ASPX file, which has no database connection, is the performance
>THok. ASPX
>THfile with one or more database queries have a answer time about 15
>THor 20
>THseconds. Each database query need maximal a second to give the
>THanswer. So
>THthe query works ok!
>THKnow you a reason, why the time with a database connection is so
>THlong? How
>THcan I make my application faster?
>

Hi Thomas,

In addition to what Mark said, you could easily identify bottlenecks on the
page by turning on trace (see <trace web.config element). Plus, inspect the
size of the ViewState as it could have grown up. There's one more potential
cause I have seen in several systems. Check how many queries are run for each
page impression, and how it affects the database (Profiler is the best tool
to use in this case).

Hope this helps
--
Milosz

"Hahn, Thomas" wrote:

Quote:

Originally Posted by

Hallo,
>
I have an ASP.NET application with masterpages, skins and diffrent themes.
The application works fine, but the performance is not realy good. If I load
an ASPX file, which has no database connection, is the performance ok. ASPX
file with one or more database queries have a answer time about 15 or 20
seconds. Each database query need maximal a second to give the answer. So
the query works ok!
Know you a reason, why the time with a database connection is so long? How
can I make my application faster?
>
Thanks for the answers and tips
>
Thomas
>
>
>

Performance problem with asp.net and database connection

Hallo,
I have an ASP.NET application with masterpages, skins and diffrent themes.
The application works fine, but the performance is not realy good. If I load
an ASPX file, which has no database connection, is the performance ok. ASPX
file with one or more database queries have a answer time about 15 or 20
seconds. Each database query need maximal a second to give the answer. So
the query works ok!
Know you a reason, why the time with a database connection is so long? How
can I make my application faster?
Thanks for the answers and tips
ThomasHello Thomas,
Do you use connection pooling?!
Seems that your delay is the reason that no connection pooling is activated
and new connection takes some ammount of time to be initiated
WBR, Michael Nemtsev [.NET/C# MVP].
My blog: http://spaces.live.com/laflour
Team blog: http://devkids.blogspot.com/
"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo
TH> I have an ASP.NET application with masterpages, skins and diffrent
TH> themes.
TH> The application works fine, but the performance is not realy good.
TH> If I load
TH> an ASPX file, which has no database connection, is the performance
TH> ok. ASPX
TH> file with one or more database queries have a answer time about 15
TH> or 20
TH> seconds. Each database query need maximal a second to give the
TH> answer. So
TH> the query works ok!
TH> Know you a reason, why the time with a database connection is so
TH> long? How
TH> can I make my application faster?
On Tue, 3 Jul 2007 07:26:48 +0000 (UTC), Michael Nemtsev
<nemtsev@.msn.com> wrote:

>Hello Thomas,
>Do you use connection pooling?!
>Seems that your delay is the reason that no connection pooling is activated
>and new connection takes some ammount of time to be initiated
I was under the impession that connection pooling was activated by
default.
One bad thing about connection pooling is the default pool size is zero
- the number of permanently open connections.
* Add a "Min Pool Size" entry to your connection string. 5 seems a
suitable minimum pool size.
* Check all your database code to ensure that connections are closed
after being used. the "using" keyword is handy here as it limits the
scope of the connection. Although your app should just fail if this
isn't the case rather than just going slow.
* If you are using datasets - what happens when you have no data in the
dataset?
- make sure you check with something like
if ( rs != null ) ... before you try to access a dataset
* Consider using data caching for some of the data.
* Try not to use datasets when you don't need to. For instance accessing
a DataTable or, better some kind of generic list (e.g. List<T> ) is
nearly always faster - this will often use a datareader to read the
actual data - there is no real syntax shortcut but it seems to always
exectute faster.
Read this: http://www.15seconds.com/issue/040830.htm
I can't add anything more to this as we really need to see the code
before commenting further.

>TH> I have an ASP.NET application with masterpages, skins and diffrent
>TH> themes.
>TH> The application works fine, but the performance is not realy good.
>TH> If I load
>TH> an ASPX file, which has no database connection, is the performance
>TH> ok. ASPX
>TH> file with one or more database queries have a answer time about 15
>TH> or 20
>TH> seconds. Each database query need maximal a second to give the
>TH> answer. So
>TH> the query works ok!
>TH> Know you a reason, why the time with a database connection is so
>TH> long? How
>TH> can I make my application faster?
>
Hi Thomas,
In addition to what Mark said, you could easily identify bottlenecks on the
page by turning on trace (see <trace > web.config element). Plus, inspect th
e
size of the ViewState as it could have grown up. There's one more potential
cause I have seen in several systems. Check how many queries are run for eac
h
page impression, and how it affects the database (Profiler is the best tool
to use in this case).
Hope this helps
--
Milosz
"Hahn, Thomas" wrote:

> Hallo,
> I have an ASP.NET application with masterpages, skins and diffrent themes.
> The application works fine, but the performance is not realy good. If I lo
ad
> an ASPX file, which has no database connection, is the performance ok. ASP
X
> file with one or more database queries have a answer time about 15 or 20
> seconds. Each database query need maximal a second to give the answer. So
> the query works ok!
> Know you a reason, why the time with a database connection is so long? How
> can I make my application faster?
> Thanks for the answers and tips
> Thomas
>
>

Performance prolem when deploying

Hi,

We have a quite simple asp.net application that works fne on my XP
development box. When we deploy it to a Windows 2003 Server performance is
really poor when rendering pages. When I turn tracing on it shows that it
takes more than 15 seconds between "Begin Render" and "End Render". All
application logic is in OnLoad which takes less than 0,1 seconds to complete
on both machines. The weird thing is that if we request this page locally
(from the server box) it takes 0,1 seconds. Authentication is Anonymous and
we don't find any errors anywhere. The statusline text in IE is flickering
while the request is being processed.

So, the question is: How come the times varies depending on where the
request comes from? It must be security related somehow but I can't figure
it out.

Thanks !

Mansyou probably have a large payload whose impact only shows up with a network
request. check how big your viewstate is. if you use netscape, check page
info, if ie, save the page to disk, and check the file size.

-- bruce (sqlwork.com)

"Mans" <mans@.nomail.com> wrote in message
news:uQLgeta5DHA.2496@.TK2MSFTNGP09.phx.gbl...
> Hi,
> We have a quite simple asp.net application that works fne on my XP
> development box. When we deploy it to a Windows 2003 Server performance is
> really poor when rendering pages. When I turn tracing on it shows that it
> takes more than 15 seconds between "Begin Render" and "End Render". All
> application logic is in OnLoad which takes less than 0,1 seconds to
complete
> on both machines. The weird thing is that if we request this page locally
> (from the server box) it takes 0,1 seconds. Authentication is Anonymous
and
> we don't find any errors anywhere. The statusline text in IE is flickering
> while the request is being processed.
> So, the question is: How come the times varies depending on where the
> request comes from? It must be security related somehow but I can't figure
> it out.
> Thanks !
> Mans
There are also some useful tools that let you see what is going on between
your browser and the server. The best is http://www.httpwatch.com/ . There's
also http://www.blunck.info/iehttpheaders.html

If it is the size of the output that is the problem then look at optimising
it - removing viewstate if you aren't using it etc... You can also reduce
the size with Http Compression - http://www.intesoft.net/aspaccelerator/

- Simon Green
InteSoft IT Ltd

"bruce barker" <nospam_brubar@.safeco.com> wrote in message
news:eQZuARd5DHA.632@.TK2MSFTNGP12.phx.gbl...
> you probably have a large payload whose impact only shows up with a
network
> request. check how big your viewstate is. if you use netscape, check page
> info, if ie, save the page to disk, and check the file size.
> -- bruce (sqlwork.com)
>
> "Mans" <mans@.nomail.com> wrote in message
> news:uQLgeta5DHA.2496@.TK2MSFTNGP09.phx.gbl...
> > Hi,
> > We have a quite simple asp.net application that works fne on my XP
> > development box. When we deploy it to a Windows 2003 Server performance
is
> > really poor when rendering pages. When I turn tracing on it shows that
it
> > takes more than 15 seconds between "Begin Render" and "End Render". All
> > application logic is in OnLoad which takes less than 0,1 seconds to
> complete
> > on both machines. The weird thing is that if we request this page
locally
> > (from the server box) it takes 0,1 seconds. Authentication is Anonymous
> and
> > we don't find any errors anywhere. The statusline text in IE is
flickering
> > while the request is being processed.
> > So, the question is: How come the times varies depending on where the
> > request comes from? It must be security related somehow but I can't
figure
> > it out.
> > Thanks !
> > Mans
Hi...

Do you have used any client side implementation in the code behind pages..

As you have written there is flickering in the status bar, there is is some
kind to and from from server to browser before rendering the html..

Can you spcify some portion of the first aspx page....

"Mans" <mans@.nomail.com> wrote in message
news:uQLgeta5DHA.2496@.TK2MSFTNGP09.phx.gbl...
> Hi,
> We have a quite simple asp.net application that works fne on my XP
> development box. When we deploy it to a Windows 2003 Server performance is
> really poor when rendering pages. When I turn tracing on it shows that it
> takes more than 15 seconds between "Begin Render" and "End Render". All
> application logic is in OnLoad which takes less than 0,1 seconds to
complete
> on both machines. The weird thing is that if we request this page locally
> (from the server box) it takes 0,1 seconds. Authentication is Anonymous
and
> we don't find any errors anywhere. The statusline text in IE is flickering
> while the request is being processed.
> So, the question is: How come the times varies depending on where the
> request comes from? It must be security related somehow but I can't figure
> it out.
> Thanks !
> Mans

Performance related Question.....

In my ASP.Net application I am using webcontrols.TextBox to display data. I
can use the Label control to display my data here since I am using this edit
box as read only. Will there be any advantage of using label box instead of
text box in terms of memory usage or any other performance issue ? Please
advice.
CrisHi,

I don't think there are big differences between label and textbox, Both
of them are persistent accross requests.
The only difference is that the label iclude the text within <span> tags
while the textbox in the value property of the <input> tag. So there is
just a sligthly difference in the amount of byte sent to the browser.

Hope this helps

Stefano Mostarda MCP
Rome Italy
Cris Rock wrote:

> In my ASP.Net application I am using webcontrols.TextBox to display data. I
> can use the Label control to display my data here since I am using this edit
> box as read only. Will there be any advantage of using label box instead of
> text box in terms of memory usage or any other performance issue ? Please
> advice.
> Cris
>

Performance Testing...

Hi,
Now I am developing C#.net Web Application. It is almost completed. Now I
want to check performance testing of it. I want...
1) Create 100 user environments, mean 100 users simultaneously request a
same page I want to see response time and load on server.
2) As per my idea we can use test project it has web base test and load test
inbuilt in Microsoft visual studio Whidbey.
Any one has idea about Load test in Microsoft visual studio Whidbey?
BYE.
Samir (Software Developer, Ahmedabad, INDIA).The tool is called Application Center Test and it ships with Visual Studio
.NET Enterprise Architect (2003). With Whidbey (2005), you need to look at
the Team tools (beta 1 refresh or the earlier Community Technical Previews).
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA
***************************
Think Outside the Box!
***************************
"Samir Patel" wrote:

> Hi,
> Now I am developing C#.net Web Application. It is almost completed. Now I
> want to check performance testing of it. I want...
>
> 1) Create 100 user environments, mean 100 users simultaneously request a
> same page I want to see response time and load on server.
>
> 2) As per my idea we can use test project it has web base test and load te
st
> inbuilt in Microsoft visual studio Whidbey.
>
> Any one has idea about Load test in Microsoft visual studio Whidbey?
>
> BYE.
> Samir (Software Developer, Ahmedabad, INDIA).
>
>
You should use Microsoft's Web Application Stress Tool (WAST) to stress test
your web application. It can be found at:
http://www.microsoft.com/technet/ar...es.m
spx
Ben Lucas
Lead Developer
Solien Technology, Inc.
www.solien.com
"Samir Patel" <sneelm@.yahoo.co.in> wrote in message
news:eqVEuDalEHA.1152@.TK2MSFTNGP11.phx.gbl...
> Hi,
> Now I am developing C#.net Web Application. It is almost completed. Now I
> want to check performance testing of it. I want...
>
> 1) Create 100 user environments, mean 100 users simultaneously request a
> same page I want to see response time and load on server.
>
> 2) As per my idea we can use test project it has web base test and load
test
> inbuilt in Microsoft visual studio Whidbey.
>
> Any one has idea about Load test in Microsoft visual studio Whidbey?
>
> BYE.
> Samir (Software Developer, Ahmedabad, INDIA).
>

Performance Testing...

Hi,

Now I am developing C#.net Web Application. It is almost completed. Now I
want to check performance testing of it. I want...

1) Create 100 user environments, mean 100 users simultaneously request a
same page I want to see response time and load on server.

2) As per my idea we can use test project it has web base test and load test
inbuilt in Microsoft visual studio Whidbey.

Any one has idea about Load test in Microsoft visual studio Whidbey?

BYE.

Samir (Software Developer, Ahmedabad, INDIA).You should use Microsoft's Web Application Stress Tool (WAST) to stress test
your web application. It can be found at:

http://www.microsoft.com/technet/ar...s/webstres.mspx

--
Ben Lucas
Lead Developer
Solien Technology, Inc.
www.solien.com

"Samir Patel" <sneelm@.yahoo.co.in> wrote in message
news:eqVEuDalEHA.1152@.TK2MSFTNGP11.phx.gbl...
> Hi,
> Now I am developing C#.net Web Application. It is almost completed. Now I
> want to check performance testing of it. I want...
>
> 1) Create 100 user environments, mean 100 users simultaneously request a
> same page I want to see response time and load on server.
>
> 2) As per my idea we can use test project it has web base test and load
test
> inbuilt in Microsoft visual studio Whidbey.
>
> Any one has idea about Load test in Microsoft visual studio Whidbey?
>
> BYE.
> Samir (Software Developer, Ahmedabad, INDIA).

Performance Testing -WAS

Hi

I am trying to test an ASP .NET application using Microsoft test tool WAS.

There is an option called client as part of the WAS tool. The documentation says that I need to give the ip address of the client machines from which the testing will be done..

Cant I just use one client machine and test my application and simulate cuoncurrent users for a single machine itself?

Thanks
KalpaFor realistic performance testing, it's also recommended that you run the stress testing tool from a separate machine other than the Web server. The actual request generator can be fairly resource intensive while generating the Web requests and this overhead can affect performance of the Web site under max loads. However, even though the documentation states two machines are a requirement you can certainly run WAS on the same machine as the Web server, but don't expect 100% accurate results especially when you're testing at the top end load for the hardware you're running on.

Reference:
http://www.west-wind.com/presentations/webstress/webstress.htm

Performance tuning ASP.NET applications

I have an ASP.NET application where one of the pages has a Save button to allow the user to save their work. So I have a client running the application in Internet Explorer, a separate IIS server running IIS version 6 and a separate SQL Server 2000 server where the data is saved in a database.
Some users are experiencing major performance issues during the save process. I'm looking for any pointers to articles on the web which can help me analyze/determine where the bottlenecks are in the entire process, i.e. is it a client problem, IIS problem or SQL Server problem.
Any help on how to do this would be greatly appreciated!
Thanks!!

Here's a few online resources related to ASP.NET performance:
ASP.NET Performance Overview
Improving ASP.NET Performance
ASP.NET Performance
Getting Started - Enhancing Web Site Performance with Caching
Optimizing Performance in ASP.NET
Developing High-Performance ASP.NET Applications
Hope these links help.

-- Erik Reitan
ASP.NET User Education
This posting is provided "AS IS" with no warranties, and confers no rights.

Om Sri Sai Ram

Performance :
http://msdn.microsoft.com/practices/compcat/default.aspx?pull=/library/en-us/dnpag/html/scalenet.asp

Caching:
http://msdn.microsoft.com/practices/compcat/default.aspx?pull=/library/en-us/dnbda/html/cachingarch.asp
Thanks,
Ram

performance: IIS - Sqlserver locks influence??

Hi there,
We have a web application handling thousands of requests per seconds reading
sql server data which is heavily updated.
We are generally experiencing no performance problems.
On some occasions we get an increase of the traffic of about 15% for short
periods. In this case we observe something really strange: our webserver
CPU goes from about 40% usage to 100%, with memory usage keeping low (about
50%). We see at the same time that the number of sqlserver locks increases.
Are these 2 behaviours correlated? ..or any other ideas?
We are using w2k and sql2K
Thanks for your help
Alex"Alex Callea" <alex.callea@.sellys.com> wrote in message
news:O2QUzVZxEHA.1564@.TK2MSFTNGP09.phx.gbl...
> Hi there,
> We have a web application handling thousands of requests per seconds
> reading sql server data which is heavily updated.
> We are generally experiencing no performance problems.
> On some occasions we get an increase of the traffic of about 15% for short
> periods. In this case we observe something really strange: our webserver
> CPU goes from about 40% usage to 100%, with memory usage keeping low
> (about 50%). We see at the same time that the number of sqlserver locks
> increases.
> Are these 2 behaviours correlated? ..or any other ideas?
The traffic increases by 15%. The traffic passes through IIS. The
application in IIS calls SQL Server.
If I'm right, then this suggests that the behaviors correlate.
John Saunders
I know it's correlated but my question was to know if the increase number of
locks had cpu usage consequences on IIS.
We already noticed that the number of web requests being processed has huge
impact on webservers CPUs.
I'd like to know if the same apply with SQL locks(e.g. ADO.NET objects need
to wait more resulting in an increase of page processing time, etc...) as
the SQL server CPUs are almost not impacted by the increased traffic.
Thanks
Alex
"John Saunders" <johnwsaundersiii at hotmail.com> wrote in message
news:eIvurHbxEHA.3024@.TK2MSFTNGP14.phx.gbl...
> "Alex Callea" <alex.callea@.sellys.com> wrote in message
> news:O2QUzVZxEHA.1564@.TK2MSFTNGP09.phx.gbl...
> The traffic increases by 15%. The traffic passes through IIS. The
> application in IIS calls SQL Server.
> If I'm right, then this suggests that the behaviors correlate.
> John Saunders
>
"Alex Callea" <alex.callea@.sellys.com> wrote in message
news:uQxGoecxEHA.4028@.TK2MSFTNGP15.phx.gbl...
>I know it's correlated but my question was to know if the increase number
>of locks had cpu usage consequences on IIS.
> We already noticed that the number of web requests being processed has
> huge impact on webservers CPUs.
> I'd like to know if the same apply with SQL locks(e.g. ADO.NET objects
> need to wait more resulting in an increase of page processing time,
> etc...) as the SQL server CPUs are almost not impacted by the increased
> traffic.
Alex, I am certainly not an expert on IIS performance, but I can't think why
it would in any way be affected by SQL Server locks.
John
"John Saunders" <johnwsaundersiii at hotmail.com> wrote in message
news:uEOK$PgxEHA.908@.TK2MSFTNGP11.phx.gbl...
> "Alex Callea" <alex.callea@.sellys.com> wrote in message
> news:uQxGoecxEHA.4028@.TK2MSFTNGP15.phx.gbl...
> Alex, I am certainly not an expert on IIS performance, but I can't think
> why it would in any way be affected by SQL Server locks.
>
The relationship is probably indirect. Sql Server locks are a directly
related to the volume of work being done by Sql Server. Locks don't
indicate that clients are waiting, just that they are doing stuff. Reading
tables generates shared locks, updating tables generates update or exclusive
locks, etc. So the more work, the more locks.
David

performance: IIS - Sqlserver locks influence??

Hi there,

We have a web application handling thousands of requests per seconds reading
sql server data which is heavily updated.
We are generally experiencing no performance problems.
On some occasions we get an increase of the traffic of about 15% for short
periods. In this case we observe something really strange: our webserver
CPU goes from about 40% usage to 100%, with memory usage keeping low (about
50%). We see at the same time that the number of sqlserver locks increases.
Are these 2 behaviours correlated? ..or any other ideas?
We are using w2k and sql2K

Thanks for your help

Alex"Alex Callea" <alex.callea@.sellys.com> wrote in message
news:O2QUzVZxEHA.1564@.TK2MSFTNGP09.phx.gbl...
> Hi there,
> We have a web application handling thousands of requests per seconds
> reading sql server data which is heavily updated.
> We are generally experiencing no performance problems.
> On some occasions we get an increase of the traffic of about 15% for short
> periods. In this case we observe something really strange: our webserver
> CPU goes from about 40% usage to 100%, with memory usage keeping low
> (about 50%). We see at the same time that the number of sqlserver locks
> increases.
> Are these 2 behaviours correlated? ..or any other ideas?

The traffic increases by 15%. The traffic passes through IIS. The
application in IIS calls SQL Server.

If I'm right, then this suggests that the behaviors correlate.

John Saunders
I know it's correlated but my question was to know if the increase number of
locks had cpu usage consequences on IIS.

We already noticed that the number of web requests being processed has huge
impact on webservers CPUs.
I'd like to know if the same apply with SQL locks(e.g. ADO.NET objects need
to wait more resulting in an increase of page processing time, etc...) as
the SQL server CPUs are almost not impacted by the increased traffic.
Thanks

Alex

"John Saunders" <johnwsaundersiii at hotmail.com> wrote in message
news:eIvurHbxEHA.3024@.TK2MSFTNGP14.phx.gbl...
> "Alex Callea" <alex.callea@.sellys.com> wrote in message
> news:O2QUzVZxEHA.1564@.TK2MSFTNGP09.phx.gbl...
>> Hi there,
>>
>> We have a web application handling thousands of requests per seconds
>> reading sql server data which is heavily updated.
>> We are generally experiencing no performance problems.
>> On some occasions we get an increase of the traffic of about 15% for
>> short periods. In this case we observe something really strange: our
>> webserver CPU goes from about 40% usage to 100%, with memory usage
>> keeping low (about 50%). We see at the same time that the number of
>> sqlserver locks increases.
>> Are these 2 behaviours correlated? ..or any other ideas?
> The traffic increases by 15%. The traffic passes through IIS. The
> application in IIS calls SQL Server.
> If I'm right, then this suggests that the behaviors correlate.
> John Saunders
"Alex Callea" <alex.callea@.sellys.com> wrote in message
news:uQxGoecxEHA.4028@.TK2MSFTNGP15.phx.gbl...
>I know it's correlated but my question was to know if the increase number
>of locks had cpu usage consequences on IIS.
> We already noticed that the number of web requests being processed has
> huge impact on webservers CPUs.
> I'd like to know if the same apply with SQL locks(e.g. ADO.NET objects
> need to wait more resulting in an increase of page processing time,
> etc...) as the SQL server CPUs are almost not impacted by the increased
> traffic.

Alex, I am certainly not an expert on IIS performance, but I can't think why
it would in any way be affected by SQL Server locks.

John
"John Saunders" <johnwsaundersiii at hotmail.com> wrote in message
news:uEOK$PgxEHA.908@.TK2MSFTNGP11.phx.gbl...
> "Alex Callea" <alex.callea@.sellys.com> wrote in message
> news:uQxGoecxEHA.4028@.TK2MSFTNGP15.phx.gbl...
>>I know it's correlated but my question was to know if the increase number
>>of locks had cpu usage consequences on IIS.
>>
>> We already noticed that the number of web requests being processed has
>> huge impact on webservers CPUs.
>> I'd like to know if the same apply with SQL locks(e.g. ADO.NET objects
>> need to wait more resulting in an increase of page processing time,
>> etc...) as the SQL server CPUs are almost not impacted by the increased
>> traffic.
> Alex, I am certainly not an expert on IIS performance, but I can't think
> why it would in any way be affected by SQL Server locks.

The relationship is probably indirect. Sql Server locks are a directly
related to the volume of work being done by Sql Server. Locks don't
indicate that clients are waiting, just that they are doing stuff. Reading
tables generates shared locks, updating tables generates update or exclusive
locks, etc. So the more work, the more locks.

David

Perhaps an XML file might do this trick?

I've got an application that many supervisors are going to use. However,
each one needs to see a different part of the information. Some supervisors
will all have the same view of the information with the same fields showing.
Others have variations on those fields to see.

The idea is that when an error is made in a certain business process, a log
entry of it would be made. The department responsible would have its
supervisor notified by e-mail. So, in our database, we have a list of all
the departments, but no easy association from the Department to its
supervisor. (Perhaps that's something I'll need to work on)

Anyways, what I want to do is to store an XML file of the department ID's
and the ID of the supervisor to send an e-mail to. Not only that, but I'd
like to use an XML file to control which fields a person needs to see. But
I'm no XML guru by any means. With only 2.5 days to do this, I'm open to
suggestions on how to best implement these requirements.

--
Stephajn CraigThis is a start...

The information I'm "protecting" and at the same time showing is coming out
of a database. The output is a datagrid bound to a datatable. The thought
occurs to me to pass the datatable through an XML transformation (perhaps
using an XSD file?) for whatever user is currently looking at it. And, to
use another XML file for determining the type of transformation to take
place. This way, no changes would have to be made to the underlying code of
the application, but rather to an XML file.

But while I may have a bit of theoretical design in mind,
1. I don't know if it's correct.
2. I don't have any idea how to implement this theory if I AM right.

--
Stephajn Craig
"Marty McDonald" <mcdonama@.wsdot.wa.gov> wrote in message
news:u#G3fIAPDHA.1624@.tk2msftngp13.phx.gbl...
> I'm just learning XML myself. Concerning the information you're trying to
> protect, is it an XML file too? If so, you can use namespace prefixes
> throughout that XML document. Each prefix would represent the kind of
role
> a person requires to view that particular information. From there, you can
> use whatever method you'd like (such as XML transforms?) to get only those
> fields a particular person is allowed to view. I know this might be
vague,
> but maybe someone can elaborate further.
> Marty
> "Stephajn Craig" <s.craig@.NOSPAMfunsunvacations.com> wrote in message
> news:#eMssBAPDHA.3192@.TK2MSFTNGP10.phx.gbl...
> > I've got an application that many supervisors are going to use.
However,
> > each one needs to see a different part of the information. Some
> supervisors
> > will all have the same view of the information with the same fields
> showing.
> > Others have variations on those fields to see.
> > The idea is that when an error is made in a certain business process, a
> log
> > entry of it would be made. The department responsible would have its
> > supervisor notified by e-mail. So, in our database, we have a list of
all
> > the departments, but no easy association from the Department to its
> > supervisor. (Perhaps that's something I'll need to work on)
> > Anyways, what I want to do is to store an XML file of the department
ID's
> > and the ID of the supervisor to send an e-mail to. Not only that, but
I'd
> > like to use an XML file to control which fields a person needs to see.
> But
> > I'm no XML guru by any means. With only 2.5 days to do this, I'm open
to
> > suggestions on how to best implement these requirements.
> > --
> > Stephajn Craig

perhaps a simple question

Hi,

i have a problem.

I have a textbox and a button and a link in my application. When the user clicks the button, the text of the textbox is inserted in my table northwind.
After this is done succesful i want to display a messagebox. After searching in the groups i did this.

Button1_Click(......)
{
--entry in northwind--

string alertscript= "<script language= JavaScript>alert('Succefull inserted');</script>";
if(!IsClientScriptBlockRegistered("alert"))
{
this.RegisterClientScriptBlock("alert", alertscript);
}
}

It works good. But when i click now on the link to another page and then after that click the backbutton in the IE6 to my first page, then the messageBox pops up again. I don`t know why this is done. Is the script still registered ? Please help me? I need to stop this.

Thankswhen you hit your back button, your going back to a cached copy of the page which still has the script in it.

personally, i wouldnt use an alert. Id put a Label/Literal control on the page and then upon successfully inserting a db record, you can set the Text of that control and make it visible.

When the user hits their back button, they still see the old message, but it's not in the way...

Periodically ViewState verification fail

Hi I hope you can help me with this problem:

Checking the event viewer of a Web Application I have noticed that periodically happens a ViewState Verification fail. It happens several times by day on a diferent .aspx pages. Sometimes it causes an error and the user loses his data, but other times apparently user can continue using the application.

This is the event registered ( I have changed the computer name and the path data, but it's not importante for the question)

COMPUTER_NAMEEvent code: 4009
Event message: Viewstate verification failed.Reason: The viewstate supplied failed integrity check.Event time: 10/8/2006 6:54:00 PM
Event time (UTC): 10/8/2006 4:54:00 PM
Event ID: 78a9d00b907b4edab1ac37665fa3175c Event sequence: 447 Event occurrence: 2 Event detail code: 50203
Application information:
Application domain: /LM/W3SVC/250184202/Root/ApplicationPath-1-128047877472787699
Trust level: Full
Application Virtual Path: /ApplicationName Application Path: D:\Directory\www\ ApplicationName \ Machine name: COMPUTER_NAME
Process information: Process ID: 2916
Process name: w3wp.exe
Account name: NT AUTHORITY\NETWORK SERVICE
Request information:
Request URL: http://ApplicationName /ApplicationForm.aspx
Request path: ApplicationName /ApplicationForm.aspx
User host address: 80.66.205.47User: USER@dotnet.itags.org.application.com
Is authenticated: True
Authentication Type: Custom
Thread account name: NT AUTHORITY\NETWORK SERVICE
ViewStateException information: Exception message: Invalid viewstate. Client IP: 80.98.185.47
Port: 16528 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7 PersistedState: ML0cSytZ3NNxTv6HMBICK (… Here appears lines and lines of the viewstate dumped) … LecAy+p3fFVSdi7LZEE= Referer: http://ApplicationName /ApplicationForm.aspx
Path: ApplicationName/ApplicationForm.aspx aspx
Custom event details:10/8/20066:01:15 PMASP.NET 2.0.50727.0InformationWeb Event 1316N/A

Any help would be appreciated

Thanks

There are a lot of possible causes for this issue. You can take a look this KB:

Troubleshooting the "View State is invalid" error with ASP.NET

Hi expert, I am also having this type of error. The first error from different user is this one:

Event code: 4009

Event message: Viewstate verification failed. Reason: The viewstate supplied failed integrity check.

Then another error, from different user is this:

Event code: 4005

Event message: Forms authentication failed for the request. Reason: The ticket supplied was invalid.

Please advise. Thanks.

Permission denied on a folder

I've created a reporting application at my company. I created a directory in the root virtual directory called ExportTemp for saving graphs and any other temporary file. I gave ASPNET modify permissions on this folder but I still get an error saying that access is denied when the app tries to save a file to the directory. I'm not sure what else to look for.

Try to allow read AND Read&Execute persmissions

HC

Haissam:

Try to allow read AND Read&Execute persmissions

HC

Thanks but I guess I should've said that I gave all permissions except full control.

Permission for bin folder: ASP.NET app deployed under a web site

Hi All,
I have an asp.net application and I have deployed it under a Web Site. I am
using IIS 6.0.
However, while running the application it fails saying that can't monitor
file changes under bin directory and access is denied.
I have given read permission to ASPNET and Impersonation account. However,
it still fails.
If I give permission to "everyone" to read the bin folder it works fine.
How do I find out which account the application is trying to use to read the
bin directory or which account needs the read permission?
Any pointer or help.
Thanks in advance
SachinHi,
Try NETWORK SERVICE account
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU
http://blogs.aspadvice.com/joteke
"Sachin" <annonymous@.microsoft.com> wrote in message
news:OaczMSczFHA.3188@.TK2MSFTNGP14.phx.gbl...
> Hi All,
> I have an asp.net application and I have deployed it under a Web Site. I
> am
> using IIS 6.0.
> However, while running the application it fails saying that can't monitor
> file changes under bin directory and access is denied.
> I have given read permission to ASPNET and Impersonation account. However,
> it still fails.
> If I give permission to "everyone" to read the bin folder it works fine.
> How do I find out which account the application is trying to use to read
> the
> bin directory or which account needs the read permission?
> Any pointer or help.
> Thanks in advance
> Sachin
>
To add to Teemu's advice
WIN 2003 uses servername\Network service acct
Patrick
"Teemu Keiski" <joteke@.aspalliance.com> wrote in message
news:ezNsr5czFHA.2212@.TK2MSFTNGP15.phx.gbl...
> Hi,
> Try NETWORK SERVICE account
> --
> Teemu Keiski
> ASP.NET MVP, AspInsider
> Finland, EU
> http://blogs.aspadvice.com/joteke
> "Sachin" <annonymous@.microsoft.com> wrote in message
> news:OaczMSczFHA.3188@.TK2MSFTNGP14.phx.gbl...
monitor
However,
>
Patrick.O.Ige wrote:
> To add to Teemu's advice
> WIN 2003 uses servername\Network service acct
> Patrick
>
However, it's important to note that IIS 6 is hard-coded to check
permissions for the IIS_WPG group of which NETWORK SERVICE is a member.
Jim Cheshire
JIMCO Software
http://www.jimcosoftware.com
FrontPage add-ins for FrontPage 2000 - 2003

Permission for bin folder: ASP.NET app deployed under a web site

Hi All,

I have an asp.net application and I have deployed it under a Web Site. I am
using IIS 6.0.

However, while running the application it fails saying that can't monitor
file changes under bin directory and access is denied.

I have given read permission to ASPNET and Impersonation account. However,
it still fails.

If I give permission to "everyone" to read the bin folder it works fine.

How do I find out which account the application is trying to use to read the
bin directory or which account needs the read permission?

Any pointer or help.

Thanks in advance
SachinHi,

Try NETWORK SERVICE account

--
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU
http://blogs.aspadvice.com/joteke

"Sachin" <annonymous@.microsoft.com> wrote in message
news:OaczMSczFHA.3188@.TK2MSFTNGP14.phx.gbl...
> Hi All,
> I have an asp.net application and I have deployed it under a Web Site. I
> am
> using IIS 6.0.
> However, while running the application it fails saying that can't monitor
> file changes under bin directory and access is denied.
> I have given read permission to ASPNET and Impersonation account. However,
> it still fails.
> If I give permission to "everyone" to read the bin folder it works fine.
> How do I find out which account the application is trying to use to read
> the
> bin directory or which account needs the read permission?
> Any pointer or help.
> Thanks in advance
> Sachin
To add to Teemu's advice
WIN 2003 uses servername\Network service acct
Patrick

"Teemu Keiski" <joteke@.aspalliance.com> wrote in message
news:ezNsr5czFHA.2212@.TK2MSFTNGP15.phx.gbl...
> Hi,
> Try NETWORK SERVICE account
> --
> Teemu Keiski
> ASP.NET MVP, AspInsider
> Finland, EU
> http://blogs.aspadvice.com/joteke
> "Sachin" <annonymous@.microsoft.com> wrote in message
> news:OaczMSczFHA.3188@.TK2MSFTNGP14.phx.gbl...
> > Hi All,
> > I have an asp.net application and I have deployed it under a Web Site. I
> > am
> > using IIS 6.0.
> > However, while running the application it fails saying that can't
monitor
> > file changes under bin directory and access is denied.
> > I have given read permission to ASPNET and Impersonation account.
However,
> > it still fails.
> > If I give permission to "everyone" to read the bin folder it works fine.
> > How do I find out which account the application is trying to use to read
> > the
> > bin directory or which account needs the read permission?
> > Any pointer or help.
> > Thanks in advance
> > Sachin
Patrick.O.Ige wrote:
> To add to Teemu's advice
> WIN 2003 uses servername\Network service acct
> Patrick

However, it's important to note that IIS 6 is hard-coded to check
permissions for the IIS_WPG group of which NETWORK SERVICE is a member.

--
Jim Cheshire
JIMCO Software
http://www.jimcosoftware.com

FrontPage add-ins for FrontPage 2000 - 2003