Kbase 18843: maxusers on Compaq Tru 64 Systems explained
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
03/03/2005 |
|
Status: Unverified
GOAL:
maxusers on Compaq Tru 64 Systems explained
FACT(s) (Environment):
Compaq Tru64 UNIX
FIX:
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; that is, from a performance standpoint, the number should always exceed the expected number of 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 the 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.