Date: Sat, 14 Sep 2002 03:23:41 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Terry Lambert <tlambert2@mindspring.com>, Mark Murray <mark@grondar.za>, FreeBSD current users <current@FreeBSD.ORG> Subject: Re: A riddle in -current Message-ID: <Pine.BSF.4.21.0209140306260.82711-100000@InterJet.elischer.org> In-Reply-To: <16204.1031997822@critter.freebsd.dk>
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On Sat, 14 Sep 2002, Poul-Henning Kamp wrote: > In message <Pine.BSF.4.21.0209140244340.82711-100000@InterJet.elischer.org>, Ju > lian Elischer writes: > > >the only difference I've found so far is teh following differnce in the > >dmesg output: > >21,22c21 > >< Timecounter "ACPI-safe" frequency 3579545 Hz > >< unknown: I/O range not supported > >--- > >> Timecounter "ACPI-fast" frequency 3579545 Hz > > You can test the difference this makes by timing > for (i = 0; i < 1000000; i++) > gettimeofday(&tv, NULL) > > ACPI-safe means that the hardware doesn't act like a properly implemented > binary counter (!) whereas ACPI-fast has not given any signs of having > trouble during the boot-time probing. that's interesting... why would they differ.... thy are the same hardware (serial numbers 1 apart ....) I'll have to investigate closer.. > > -- > 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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