On Fri, 10 Jul 2009, Andriy Gapon wrote: > Thinking aloud - maybe we could always use one value of tsc_freq (or > something like max_tsc_freq). This wouldn't give us correct timestamps when > TSC frequency is changing, but it would give us something that is always > proportional to TSC value and thus has its properties - monotonicity in the > first place. And, of course, there is no problem when TSC frequency is > constant. Just a point from a user perspective: I find it useful (important even) to be able to compare timing between runs on the same box, and while that means I need to control for the frequency changing in an experimental sense, in as much as timestamp measurements in dtrace can be normalized, that would be helpful. Robert N M Watson Computer Laboratory University of CambridgeReceived on Fri Jul 10 2009 - 09:12:38 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:51 UTC