iTP Secure WebServer System Administrators Guide (Version 7.5+)

Both MaxFileCacheEntries and MaxFileCacheContentSize determine the maximum file
cache size. For example, if MaxFileCacheEntries is set to 3000 and
MaxFileCacheContentSize is set to 30, and then the maximum capacity for the file cache is
90MB. HP recommends a survey of all static files residing on the Web site in addition to the
physical memory configuration. Performance might be hindered if the iTP Secure WebServer
consumes too much physical memory and causes a high number of page faults. A tuning process
might be required to determine optimal settings for these directivpes.
NoCache Region Command
Syntax:
Region URL_path {
[NoCache]
}
Description:
Use the Region directive to control access to the server by path component. The command(s)
specified are applied to all URLs matching URL_path. The NoCache command is used to disable
file caching for all URLs matching the URL_path. In other words, none of the file opens, file stats,
or file contents in the region are cached.
The file caching mechanism is applied to all disk files on an iTP Secure WebServer. If a small
number of disk files require constant updates, frequent updates to the file cache might also be
required, and this might impact the overall performance of the iTP Secure WebServer. The NoCache
Region command can be used to exclude some of these files from file caching and allow the
static files to remain in the cache longer, and therefore help maintain a good performance.
However, the Region directive is evaluated for every request and, in this case, every file access.
Therefore, too many Region directives might also affect the efficiency of the iTP Secure WebServer.
It might be best to keep all constantly updated files in a single region.
Default:
When no Region directive or no NoCache command in the Region directives is present, the
server attempts to cache all files accessed.
Example:
Region /h/dynamic_files/* {
NoCache
}
Managing Log Files
This section describes how to manage your log files including:
• “Choosing a Log Format” (page 108)
• “Planning Space for Logs” (page 109)
• “Rotating Log Files” (page 110)
Choosing a Log Format
You can choose between three formats for your server log files:
• “Common Log Format (CLF)” (page 109)
• “Combined Log Format” (page 109)
• “Extended Log Format (ELF)” (page 109)
108 Configuring the iTP Secure WebServer