I am looking for some information about the IS display page where it shows the total memory available and the used memory.
i know that information is coming form stat.log file, but i want to know how IS calculates the total memory, is there any configuration where we set this value?
If you are asking how to set those min and max values then, You can set the Java Min memory, Max memory and max perm size settings from the Server.bat or server.sh file.
The parameters mentioned by Akshith are exactly those determining the memory used, the max memory displayed by IS is the one set by
JAVA_MAX_MEM=
Did you check if the correct lines are used in server.sh, some of the parameter lines must first be uncommented if you do not want to use standard values,
Did you stop and restarted IS? Just restart is not enough, as the memory belongs to the JVM, which is not stopped by restarting the server.
if you want the “Total Memory” set to your MAX_MEM value, you can consider setting both the MIN_MEM and the MAX_MEM to the same value. Should do the trick.
Note that this value will be allocated to your IS at all times; other appz on your box will not be able to use that mem anymore.