IBM Tivoli Monitoring > Version 6.3 Fix Pack 2 > Installation Guides > Installation Guide > Prepare for installation > Linux or UNIX installation considerations
IBM Tivoli Monitoring, Version 6.3 Fix Pack 2
File descriptor (maxfiles) limit on UNIX and Linux systems
The monitoring server and Warehouse Proxy Agent can use a large number of file descriptors, especially in a large environment. On UNIX and Linux systems, the maximum number of file descriptors available to a process is controlled by user limit parameters.
To display the user limits, run:
ulimit -a
The "nofiles" parameter is the number of file descriptors available to a process. For the monitoring server process (kdsmain), the "nofiles" parameter should be set larger than the maximum number of agents that will be connecting to the monitoring server. If the monitoring server is unable to get file descriptors when needed, unexpected behavior can occur, including program failures. Consider increasing the value to 8000 file descriptors or more.
There are other user limit parameters that control how much data, stack and memory are available to a process. For large environments, consider increasing these memory-related user limit parameters for the monitoring server (kdsmain) process. Configuring the user limit parameters usually requires root access, and involves changing system startup files which are operating system specific. Consult the operating system manuals for information on how to configure the user limit parameters.
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Linux or UNIX installation considerations