Kbase 18842: maxusers on DIGITAL UNIX systems
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
6/13/2001 |
|
maxusers on DIGITAL UNIX systems
The maxusers keyword defines the number of simultaneous
users that your system can support without straining
system resources. The number should not be taken literally;
from a performance standpoint, the number should always be
greater than the expected number of real users. This number
also is not the number of logins specified in your system
software license.
The default value assigned to maxusers depends upon the size
of your system. For systems that have 24 MB of memory
(small memory systems), the default value is 16. For all
other systems, the default value is 32.
System algorithms use the maxusers keyword to size a number
of system data structures and to determine the amount of
space allocated to system tables.
One such table is the system process table, which is used
to determine how many active processes can be running at
one time.
Increasing the value of maxusers allocates more system
resources for use by the kernel. However, it also increases
the amount of physical memory consumed by the kernel.
Decreasing the value of maxusers reduces kernel memory usage,
but also allocates less system resources. The setting of
maxusers should be a balance between the number of users and
the system hardware configuration (primarily memory size).
Use the following general guidelines to set the value of the
maxusers keyword:
For systems with limited physical memory and a small number
of users, set maxusers to 8 or 16.
Setting maxusers to 32 is reasonable for most systems with
moderate hardware configurations and a moderate number of
users.
For larger systems with heavy workloads, set maxusers to 64.
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