If the Analysis takes a very long time to generate graphs and reports for a large results set or ‘System.OutOfMemoryException’ error is seen in the Analysis logs then to improve the Analysis reports and graphs generation enable the 3 GB mode on the Analysis machine
To do this:
For x64 windows – Just have 4 GB or more memory.
For x32 windows – have 4 GB of memory and do the following:
Run -> msconfig
Advanced options… button
Check the Maximum memory and put to the field maximum allowed value ( usually it is 3072 )