Sun Microsystems Netscape Enterprise Server, Руководство администратора

Страница: 249 / 532

Chapter 10, Configuring the Server for Performance 249
File Cache in Enterprise Server 4.0
SmallFileSizeLimit=2048
SmallFileSpace
The size of heap space (in bytes) used for the cache, including heap space used
to cache small files.
By default, this is set to 128000 (128 KB).
SmallFileSpace=128000
MediumFileSizeLimit (Unix)
The size (in bytes) of the largest file that is not a “small” file that is considered
to be “medium” size. The contents of medium files are cached by mapping the
file into virtual memory (currently only on Unix platforms). The contents of
“large” files (larger than “medium”) are not cached, although information about
large files is cached.
By default, this is set to 128000 (128 KB).
MediumFileSizeLimit=128000
MediumFileSpace
The size (in bytes) of the virtual memory used to map all medium sized files.
By default, this is set to 4000000(4MB).
MediumFileSpace=4000000
TransmitFile
When
TransmitFile
is set to “true,” open file descriptors are cached for files
in the file cache, rather than the file contents, and
PR_TransmitFile
is used
to send the file contents to a client. When set to “true,” the distinction normally
made by the file cache between small, medium, and large files no longer
applies, since only the open file descriptor is being cached. By default,
TransmitFile is “false” on Unix and “true” on Windows NT.