Performance Monitor window

The performance monitor is available from Tools->Performance Monitor menu and it shows some memory and usage statistics:

The contents of the window is updated automatically every 3 seconds

This tool is intended to be used now for two purposes:
a) tweaking cache settings for best RAM usage (for example optimizations will run faster if all quotation data can be kept in RAM)
b) monitoring real-time performance

More uses will probably come in the future.