K 10 svn:author V 4 jkim K 8 svn:date V 27 2011-04-12T22:41:52.946229Z K 7 svn:log V 214 Do not use TSC for DELAY(9) if it not P-state invariant to avoid possible foot-shooting. DELAY() becomes unreliable when TSC frequency varies wildly, especially cpufreq(4) and powerd(8) are used at the same time. END