https://perf.webkit.org/#mode=charts&chartList=%5B%5B%22mac-mavericks%22%2C%22Dromaeo%2Fdromaeo-core-eval%3ARuns%22%5D%2C%5B%22mac-mavericks%22%2C%22Dromaeo%2Fjslib-attr-prototype%3ARuns%22%5D%2C%5B%22mac-mavericks%22%2C%22Dromaeo%2Fjslib-event-prototype%3ARuns%22%5D%5D&days=17 Note how rollout fixes the regression and the relanding brings it back.
<rdar://problem/15804457>
I think this could have been considered a duplicate of bug 126901, which has since been closed and the Generational GC has been enabled. So I think we can close this as a dup. *** This bug has been marked as a duplicate of bug 126901 ***