Date: Fri, 23 Aug 2002 23:02:29 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Luigi Rizzo <rizzo@icir.org> Cc: current@FreeBSD.ORG Subject: Re: how to compute the skew between TSC in SMP systems ? Message-ID: <29486.1030136549@critter.freebsd.dk> In-Reply-To: Your message of "Fri, 23 Aug 2002 13:44:10 PDT." <20020823134410.A81962@iguana.icir.org>
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In message <20020823134410.A81962@iguana.icir.org>, Luigi Rizzo writes: >Hi, >does anyone have an idea on how to determine the skew between >TSC content in the various processors on an SMP box ? On i386: It cannot be reliably done. Been there, tried that. On alpha: Cannot be done, they run different frequencies. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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