2011/10/2 Lev Serebryakov <l...@freebsd.org>: > Hello, Freebsd-hackers. > > What should I use to measure short intervals of time between events > in kernel? I don't need any "time" in means of, for example, time(3) > API, but some monotonically and uniformly increasing counter with > known frequency. As cheap as possible, without complex calculations :)
There are several global variables that may suffice. 'ticks' is the current tick value. 'time_second' is the current time in seconds, but this is adjusted when the system time is changed. 'time_uptime' is the current uptime in seconds and is the base upon which time_second is computed, depending on the system clock. Cheers, matthew _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
