Setting ulimit Limits & vm.max_map_count
To set the ulimit limits please follow the below steps.
- Create a new file, 99-tamr.conf in the directory /etc/security/limits.d. Do not edit the file /etc/security/limits.conf directly.
- Add the configuration to this file as shown in the following example.
# /etc/security/limits.d/99-tamr.conf
* soft nofile 1000000
* hard nofile 1000000
* soft nproc 104381
* hard nproc 104381
- Verify the current values:
- The maximum number of open files (nofile) is 1000000. To confirm the current value, run ulimit -n.
- The maximum number of user processes (nproc) is 104381. To confirm the current value, run ulimit -u.
For more information about ulimit resource limits, see:
- RHEL: How to set ulimit values.
- Ubuntu: Configuration file for ulimit.
Setting vm.max_map_count:
You can change the maximum number of memory map areas a process may have, specified with vm.max_map_count. The maximum number of memory map areas is 262144.
- To set the value for the current Tamr session, use sysctl -w vm.max_map_count=.
- To persist the change so it applies when you restart the Tamr instance, edit the file /etc/sysctl.conf and add a line at the end containing: vm.max_map_count=.
Updated over 2 years ago