The i-Bench test suite, which is referred from http://www.webkit.org/projects/performance/index.html, is no longer available. We should update the document accordingly. We need some publicly available, ideally opensource benchmark for measuring page load performance. (Safari has PLT and Chromium has Page Cycler but neither are not publicly available due to copyright reason.) But that is beyond this bug.
Created attachment 121973 [details] Patch
Committed r104672: <http://trac.webkit.org/changeset/104672>