portal and hl2lostcoast. Assuming you own these games and have them installed on Steam, it's a simple matter of running phoronix-test-suite benchmark portal hl2lostcoast for running them in a fully-automated manner within our open-source test harness and framework, with support for easily sharing the results via OpenBenchmarking.org. If you click those two test profile links above you can already see some early result uploads.
As with the Counter-Strike: Source and Team Fortress 2 test profiles there's still the same fundamental issues of benchmarking games on Steam that come down to issues with not being able to effectively manage the versions of the games/tests being installed (i.e. no rollback support for specifying a specific game revision to install, to ensure accurate comparisons when installing Steam games on multiple systems at different times and to ensure a matching version) and some issues with Steam that can break automation when the Steam process hangs, etc. Finally, Team Fortress 2 Benchmarks For Phoronix and Running Benchmarks On Other New Linux Games. It's important to read those articles before making any new benchmark requests at Phoronix. The good news is that it looks like an organization might be contracting some work and new PTS test profiles around SteamOS / Steam on Linux and other tests to overcome these issues that will be interesting for Linux gamers going forward, stay tuned; these two new test profiles this weekend are just for evaluation purposes. In the next day or two I might also put out some new AMD/Radeon multi-way comparison results of TF2 / Portal / HL2: Lost Coast / CS: Source on Ubuntu Linux.