User Guide

26 Server Memory Administration Guide
Server Memory Administration Guide
103-000147-001
August 30, 2001
Novell Confidential
Manual 99a38 July 17, 2001
For example, if your server's highest number of Directory Cache buffers since
server was last started is 250, and you want to load one additional name space,
you would calculate the minimum and maximum values of directory cache
buffers as follows:
2 x 250 = 500
500 + 100 = 600
Before loading the additional name space, change the following SET
parameter values using NetWare Remote Manager, MONITOR, or SET
commands at the System Console prompt:
MINIMUM DIRECTORY CACHE BUFFERS
MAXIMUM DIRECTORY CACHE BUFFERS
These settings increase the likelihood that repeatedly used directory cache
buffers will remain in cache and that those buffers will remain in cache longer,
providing the best possible read response times.
Monitoring the New Settings
After you tune the directory cache, let the server operate for a few weeks to
settle in. Then check to see whether the server allocates the additional
directory cache buffers that the new settings allow. If the allocated buffers do
not increase to near the level allowed, then you know that your users' directory
access patterns don't require the additional cache. On the other hand, if your
server uses all the cache you made available, your user community's directory
access patterns might be more intensive than you anticipated.
Using Virtual Memory
NetWare provides a virtual memory system that moves data out of memory
and into a swap file on disk if the data isn't used frequently. Thus, the virtual
memory system ensures that RAM is used more efficiently. It lessens the
likelihood that low memory conditions will cause a problem with the server.
For general information about virtual memory, see “Virtual Memory” on page
14.
NetWare Remote Manager has several pages that can assist you in monitoring
and managing the use of Virtual Memory system in your server.