Found it. It was https://www.phoronix.com/news/Intel-Thin-Layout-Optimizer https://www.phoronix.com/news/Intel-Thin-Layout-Optimizer. It was open source, but h

Found it. It was https://www.phoronix.com/news/Intel-Thin-Layout-Optimizer https://www.phoronix.com/news/Intel-Thin-Layout-Optimizer. It was open source, but has since been deprecated.