In a tech-heavy post on its still-new Linux blog, the team at Valve responsible for a potential Ubuntu-based Steam client dive into the details of porting Left 4 Dead 2 to the open-source OS family, with eye-opening results. On a fairly high-end gaming rig running Windows 7, Valve established a baseline performance of 270.6 FPS, but the Linux port managed to squeeze just a bit more juice out of the same hardware to run at 315 FPS. Well, after a an initial period of running at 6 FPS, but that’s just how porting works, apparently. The nitty-gritties are probably a bit too much for most of us on a Saturday morning, but Valve puts the increased performance down to the “underlying efficiency of the kernel and OpenGL”. It even took some of its new Linux sensibilities back to Windows and upped the FPS to 303. Most interesting.
Source: Valve Linux