Limit memory consumption of SharePoint 2013's Search process

On my different developer boxes and the demo images I use as sandboxes, I have the problem that SharePoint's Search process has a tendency to hog all available memory.

Today I took the time to try to figure out what to do about it, and I came across this article which actually helped.

I already had the Reduced level of performance, but changing the configuration file to allow it to use a smaller amount of memory helped.