Description
Added in EM 24.09, as we gain experience using the settings, it will be valuable to add guidance on the impact of specific changes and recommendations on in what situations they should be applied.
A “cache_settings” group was added to the Enterprise Manager “settings.yaml” file. Each setting controls the update frequency for its designated cache. Frequency values represent how often EM should perform database calls to refresh cache data. Potential performance optimizations can be gained by adjusting the frequencies.
Windows
On Windows, the default install location of “settings.yaml” is at:
“C:\ProgramFiles\exacqVision\EnterpriseManager\EnterpriseSystemManager”
LINUX
On Linux, the default install location is at:
“/usr/local/exacq/esm”
Opening the “settings.yaml” file, you should find the “cache_settings” section and a list of adjustable cache frequencies:
As described in the notes, all update frequencies have a default setting of five (5) seconds and can be increased in increments of five (5) seconds. Values should be set with a single space followed by the value itself as a string (“15”) or an integer (15).
For example:
“global_listenting_servers_cache_update_frequency: 15” or
“global_listenting_servers_cache_update_frequency: ‘15’” but not
“global_listenting_servers_cache_update_frequency:15”
Floating point values are undefined and will be evaluated to the nearest whole number value with a factor of five (5). For example, a value of 10.2 would be evaluated to 10, and 17.8 would evaluate to 20. After setting or changing a value, the importer will need to be restarted for the update to take effect.
Values less than five (5), Negative values and values greater than a year would evaluate to zero (0). Zero values should be used cautiously as they would indicate that the given cache should never be updated. Therefore, EM would only update that cache during an importer restart.
All other values not defined in this document will be considered invalid. Invalid values will result in EM throwing an exception and setting the given cache to a default of five (5).