Please note the following recommendations for increasing the memory for the CA PC processes which include the following:
The default memory values for each CA Performance Center process have been chosen conservatively and in most cases these values do not need to be changed. These values can be found in the corresponding directory for each of the CA PC processes:
You can find both initial memory and maximum memory settings by looking for the string ‘memory’ in these files.
The default maxmemory values are set to:
PC (Console): 768MB (should never be lower than this value)
DM: 768MB (should never be lower than this value)
For very large monitoring environments especially if there are large numbers of concurrent users, these values can be increased as per the ratios shown below. The table below uses an example of a CA Performance Center node with 32GB of system memory.
CA PC process
CA PC Memory Allocation (System Memory 32GB)
1/8 of total system memory (keep same as DM)
1/8 of total system memory (keep same as PC)
2/8 of total system memory – (this value can be left alone if events are not used)
Does not need to be increased
128MB (not changed)
Note that these ratios are different than the OOTB default values set above.
In this specific example we found that the performance of the CA PC was enhanced by increasing the key_buffer_size to 4G (default is 384MB). This value can be set in /etc/my.cnf on the CA PC node.
More information on how to modify the “Maximum Memory Usage for Each Service” can be found in the CA Performance Center Installation Guide.