From owner-freebsd-hackers  Fri Apr  5 09:25:48 1996
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To: hackers@freebsd.org
Subject: interrupts and such
Date: Fri, 05 Apr 1996 10:25:43 -0700
From: Warner Losh <imp@village.org>
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I just did a vmstat -i on my 2.1R I notice that I get 100/s for clk0
(which is what I'd expect) and 128/s for rtc0 on irq8.  This seems
excessive to me to have both.  Also, I notice on an older 1.1.5.1R
system that the rtc0 device isn't listed in vmstat's output.

So what is rtc0 and why is it acting like a clock interrupt?

Warner

P.S.  The 2.1R system is a 486DX66 while the 1.1.5R system is a
386DX40.