K 10 svn:author V 3 mav K 8 svn:date V 27 2010-06-19T08:36:12.846297Z K 7 svn:log V 234 While we indeed can't precisely measure time spent in C1, we can consider measured interval as upper bound. It should be more precise then just assuming hz/2. For idle CPU it should be quite precise, for busy - not worse then before. END