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Date:      Sun, 22 Feb 1998 13:39:47 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        John Hay <jhay@mikom.csir.co.za>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: clock code working properly in -current? 
Message-ID:  <11056.888151187@critter.freebsd.dk>
In-Reply-To: Your message of "Sat, 22 Feb 1998 14:34:22 %2B0200." <199802221234.OAA11729@zibbi.mikom.csir.co.za> 

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In message <199802221234.OAA11729@zibbi.mikom.csir.co.za>, John Hay writes:
>Hi,
>
>The new clock code seems to be broken (for me at least) or is there
>something that I must do/set/configure to make things work again?
>
>With kernels build today, both my 90MHz Pentium UP machine and my 266MHz
>PII SMP machine gain a lot of time. The Pentium gain about 2 seconds per
>minute and the SMP machine about 1 second per minute. Needless to say
>xntpd can't cope with a frequency error that big. Previously xntpd and
>ntp-4 reported a 24ppm error on the Pentium and a -297ppm error on the
>SMP machine.


Yes, please boot with '-v', and send me the dmesg output & the output
of sysctl -a.  Add CLK_USE_TSC_CALIBRATION and CLK_USE_I8254_CALIBRATION
to your kernel, and repeat.

>One other strange thing that I noticed is that "systat -vmstat" on the
>SMP machine reports the clk0 interrupt rate as 50 and the rtc0 rate as
>64, while on the UP machine it is still reported as 100 and 128 like
>before.

This is unrelated I belive.

--
Poul-Henning Kamp             FreeBSD coreteam member
phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
"Drink MONO-tonic, it goes down but it will NEVER come back up!"

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