On Nov 16, 2010, at 09:37 , Andriy Gapon wrote: > > Many modern processors provide APERF and MPERF MSRs which allow to easily and > reliable calculate average CPU performance level over some interval of time. > This also allows to notice things like performance boost, which is generally > hidden from software. > What would be a proper place to add code that would measure APERF/MPERF ratio? > When should trigger such a measurement and over what interval? > Ideas?
Can you point me at documentation for this? This sounds a lot like hwpmc(4) and I wonder if we can make these available in the same way. Best, George _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
