On my Windows 7 machine (build 7100, x64, Dell XPS M1710 laptop), I'm getting horrible performance after chrome crashes. I kill the chrome process from the Resource Monitor, but after that perfmon.exe itself is shown as taking about 50% of the CPU (52.31% right now).
Quitting Performance Monitor, then starting it again, shows perfmon starting out with a reasonable CPU, but it quickly (ten seconds) shoots right back up.
Suggestions? So far a reboot seems to be the only way to solve the problem. I'm assuming that the perfmon issue is just a symptom of the real problem.
(Update, much later: this never got resolved. I'm not seeing the problem in the RTM Windows 7 + latest Chrome. Yes, it was a core 2 duo, so presumably Chrome was running full blast on one CPU.)