Customize the Linux file handle setting for large collections
In Linux, a portion of memory is designated for file handles, which is the mechanism used to determine the number of files that can be open at one time. The default value is 1024. For large data collection policy environments, this number may need to be increased to 8192. A large environment is characterized as any collector that is collecting from 20 or more subsystems, such as 20+ TSM instances or 20+ unique arrays.
To change the number of file handles, take the following steps.
On the Linux Data Collector server, edit:
/etc/security/limits.conf
At the end of the file, add the following lines:
root soft nofile 8192 root hard nofile 8192
Log out and log back in as root to execute the following commands to validate all values have been set to 8192.
ulimit -n ulimit -Hn ulimit -Sn
Restart the Data Collector.