Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 06 Apr 2003 15:25:54 GMT
From:      Tor.Egge@cvsup.no.freebsd.org
To:        des@ofug.org
Cc:        cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/conf options.i386 src/sys/i386/i386 tsc.c src/sys/i386/conf NOTES
Message-ID:  <20030406152554B.tegge@cvsup.no.freebsd.org>
In-Reply-To: <xzpr88f6dfe.fsf@flood.ping.uio.no>
References:  <xzp1y0gofxj.fsf@flood.ping.uio.no> <20030406004043E.tegge@cvsup.no.freebsd.org> <xzpr88f6dfe.fsf@flood.ping.uio.no>

next in thread | previous in thread | raw e-mail | index | archive | help

> Is there a simple procedure to determine whether the TSCs on any given
> multi-CPU machine are synchronized?

Ensure that the TSCs are used, then run a program which calls
gettimeofday() in a loop and prints an error message each time the
clock steps backwards.  Repeat procedure after 1 day of uptime.

- Tor Egge



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030406152554B.tegge>