Kbase P12112: Severe performance drop on Windows server due to paging to d
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
21/08/2003 |
|
Status: Unverified
FACT(s) (Environment):
Windows 2000 Advanced Server
SYMPTOM(s):
Severe performance drop on Windows server due to paging to disk
Windows Server appears to freeze
CAUSE:
The default configuration for Windows 2000 Servers is to Maximize data throughput for network applications. Because this value can degrade service performance, it is not appropriate for application servers.
FIX:
The registry entry
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\LargeSystemCache determines whether the system maintains a standard size or a large size file system cache, and influences how often the system writes changed pages to disk.
Increasing the size of the file system cache generally improves server performance, but it reduces the physical memory space available to applications and services. Similarly, writing system data less frequently minimizes use of the disk subsystem, but the changed pages occupy memory that might otherwise be used by applications.
It is recommended for servers running applications that do their own memory caching, such as a Progress Database, and for applications that perform best with ample memory, such as Internet Information Services, that the value of this entry is changed to 0 by selecting the "Maximize data throughput for network applications" option in Network and Dial-up Connections.
To change the value of this entry on Windows 2000 Server, use the Server Optimization tab in Network and Dial-up Connections. Right-click My Network Places, click Properties, right-click Local Area Connection, click Properties, click File and Printer Sharing for Microsoft Networks, and then click the Properties button. To set the value of this entry to 0, select the Maximize data throughput for network applications option. To set the value to 1, select Maximize data throughput for network applications.