lol. Valium. Lots and lots of Valium.
I had to go through the usual XLN wrong computer ID for Addictive Drums license dance but Sonar at first blush loads up a complex project and plays fine. There isn't a recording session on my plate for a bit but I'll report on that.
The memory compression feature works with paging. Normally when there are many apps demanding access to memory, the OS will write the content of suspended app's memory "pages" to disk and read the current app's memory pages in from disk. This "swap" creates a bottleneck because disk is very slow in CPU world. Memory compression works by simply running a compression (like zip) on the contents of the app's page, thereby freeing up memory for other active processes. Since compressing is a CPU and memory operation it can run potentially quite a lot faster than physical disk writes, so contention for memory is much reduced.
My system has 24 gig of ram so in the natural course of things I shouldn't hit the trigger for a swap.