This hotfix provides some performance improvements when
you use single-threaded apartment (STA) components in your ASP.NET application. These performance improvements occur in the following
scenarios:
- Storing STA components in Session state
When you store STA components in Session state, all access to the
STA component is bound to the thread where it was created. When later requests are run on a
different thread, access to the STA component must go through the
original thread where it was created. This behavior causes a cross-apartment call and a
thread switch, and severely affects performance. The new behavior binds sessions to the original thread where they were
created. Therefore, later requests are bound to the original
thread. - Creating STA components in a Session_Start event and storing them in Session state
When you create STA components in the Session_Start event,
components are bound to the main STA thread. This behavior causes access to
all STA components that are created in the Session_Start event to be limited to
this single thread. The new behavior allows STA components that you create in the Session_Start event not
to run on the main STA thread.
Note When you use STA components from an .aspx Web page, the
AspCompat attribute of the
Page directive must be set to
true. The
AspCompat
attribute forces the page to run on a thread in the STA thread
pool.
How to Obtain the Hotfix
This issue is fixed in the June 2003 ASP.NET Hotfix Package 1.1. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
821156Â
(http://kbalertz.com/Feedback.aspx?kbNumber=821156/
)
INFO: ASP.NET 1.1 June 2003 Hotfix Rollup Package
You cannot obtain this fix individually. You must
install the rollup.
Note When you request this hotfix, you receive the rollup.
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the
Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
-----------------------------------------------------------------------
07-Jun-2003 00:44 1.1.4322.910 253,952 Aspnet_isapi.dll
07-Jun-2003 00:44 1.1.4322.910 20,480 Aspnet_regiis.exe
07-Jun-2003 00:44 1.1.4322.910 32,768 Aspnet_wp.exe
15-May-2003 23:49 33,522 Installpersistsqlstate.sql
15-May-2003 23:49 34,150 Installsqlstate.sql
07-Jun-2003 12:52 1.1.4322.910 1,216,512 System.dll
07-Jun-2003 00:39 14,472 Webuivalidation.js
07-Jun-2003 12:52 1.1.4322.910 1,249,280 System.Web.dll
If you applied the hotfix in this article for Microsoft ASP.NET included with the .NET Framework 1.0, and if you upgraded to Microsoft ASP.NET included with the .NET Framework 1.1, apply the hotfix package from the following Microsoft Knowledge Base article:
821156Â
(http://kbalertz.com/Feedback.aspx?kbNumber=821156/
)
INFO: ASP.NET 1.1 June 2003 Hotfix Rollup Package
Additionally, if you upgraded to the .NET Framework 1.1, and if you experience the symptoms in this article, apply the hotfix package from this Microsoft Knowledge Base article.
Microsoft
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.