Date: Sun, 27 Nov 2005 22:35:09 +0900 From: Norikatsu Shigemura <nork@FreeBSD.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org, bde@zeta.org.au Subject: Re: cvs commit: src/sys/sys time.h src/sys/kern kern_time.c Message-ID: <20051127223509.8913eafe.nork@FreeBSD.org> In-Reply-To: <20051127131838.F81764@fledge.watson.org> References: <200511270055.jAR0tIkF032480@repoman.freebsd.org> <20051127005622.H81764@fledge.watson.org> <20051127234937.X28222@delplex.bde.org> <20051127131838.F81764@fledge.watson.org>
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On Sun, 27 Nov 2005 13:23:00 +0000 (GMT) Robert Watson <rwatson@freebsd.org> wrote: > > time(3) should use the environment variable too, since the fast version > > gives a value that is both imprecise and wrong. It inherits bugs from > > the kernel's time_second variable. time_second is not the current time > > truncated, but is the (current time less up to about tc_tick/HZ) > > truncated. It lags the current time by more than 1 second for up to > > about tc_tick/HZ seconds before every rollover of the correct truncated > > time. > Yes -- this is a mistake in the current library wrapper. All interfaces > modified to be "fast" or "precise" should be controlled by the > environmental variable so that testing is more consistent (i.e., other > than wrapping costs, the non-configured version should behave identically > to the non-wrapped version). I think that to use libmap.conf(5) is a best solution:-), if someone want to use low resolution version. I didn't confirm following setting: # All binaries use low resolution version on /usr/local/bin/ [/usr/local/bin/] libc.so.6 libwrapper.so.1 Of cource, you can use mysql only, and no more controll by environment variable.
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