LCE-EU 2015

System suspend/resume is the core energy saving strategy for numerous Linux-based systems,
including Android, Chrome OS, Ubuntu and Fedora.
The faster Linux can suspend/resume,
the more often it can be used, and the more energy these systems can save.

We start by presenting analyze_suspend,
a tool we developed to measure performance.
Analyze_suspend is freely available in open source,
and we are hopeful that the community will embrace it
to optimize Linux on a broad range of systems.

Then we explore the kernel and driver optimizations that have been made as a result of using this tool --
some are upstream, and some are still in development.

Finally, we look to the challenges ahead in reaching
and sustaining Linux suspend/resume at the speed of light.