User Guide

Utilities 237
Utilities Reference
103-000153-001
August 29, 2001
Novell Confidential
Manual 99a38 July 17, 2001
Table 17 Directory Caching Parameters for the Traditional File System
Parameter Use to
Dirty Directory Cache Delay Time =
time
Specify how long the system keeps a directory table write request
in memory before writing it to disk.
Supported values: 0 to 10 seconds
Default: 0.5 second
Increasing the delay time gives slightly quicker performance but
increases the probability of the directory tables becoming
corrupted.
Decreasing the delay time slightly reduces the chance of
directory tables becoming corrupted, but can reduce performance
slightly.
A zero setting reduces performance dramatically.
Directory Cache Allocation Wait Time
= number
Specify how long the system must wait after allocating a new
directory cache buffer before it can allocate another buffer.
Supported values: 0.5 second to 2 minutes
Default: 2.2 seconds
During this time, all requests for a new directory cache buffer are
ignored.
If the wait time is too low, peak usage requests cause more
resources than necessary to be allocated to directory caching.
If the wait time is too high, the system is very slow in allocating
the directory cache buffers necessary to service the usual
number of directory requests.
If directory searches seem slow even after the server has been
running for 15 minutes, you should decrease this parameter.
Directory Cache Buffer
NonReferenced Delay = time
Specify how long a directory entry must be cached before it can
be overwritten by another directory entry.
Supported values: 1 second to 5 minutes
Default: 5.5 seconds
Increasing this parameter speeds up directory access. The
system allocates more directory cache buffers, and a directory is
more likely to be cached in memory.
Decreasing this parameter slows directory access but also
reduces the need for directory cache buffers.