Microsoft KB Archive/316269

= FIX: You see performance degradation when you send data by using the XMLHTTPRequest object =

Article ID: 316269

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft XML Core Services 4.0

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This article was previously published under Q316269



SYMPTOMS
If you try to send more than 10 megabytes (MB) of data by using the XMLHTTPRequest object, the performance of the send action decreases. It takes a long time to send the data through the channel. The Performance Monitor (perfmon) shows that no data is transmitted over the channel. When you send the data, the CPU usage remains high, and the send action stops to respond.



CAUSE
When you send the data by using the XMLHTTPRequest object, many copies of the data are generated in the memory before the data is sent. Much memory is used before the data is sent over the channel. Therefore, CPU utilization remains high, and it takes a long time to send lots of data.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft XML 4.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

818409 How to obtain the latest Microsoft XML 4.0 service pack

Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

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 --  07-01-2002    11.43  4.0.9307.0   1,229,824 msxml4.dll 07-01-2002   11.39  4.0.9307.0      44,544 msxml4a.dll 07-01-2002   11.39  4.0.9307.0      82,432 msxml4r.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in MSXML 4.0 Service Pack Service Pack 1.

Keywords: kbhotfixserver kbqfe kbqfe kbxml kbperfmon kbdll kbperformance kbbug kbfix KB316269

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