Date: Mon, 04 Feb 2002 13:21:25 -0800 (PST) From: John Polstra <jdp@polstra.com> To: hackers@freebsd.org Subject: A question about timecounters Message-ID: <XFMail.20020204132125.jdp@polstra.com>
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I'm trying to understand the timecounter code, and in particular the reason for the "microuptime went backwards" messages which I see on just about every machine I have, whether running -stable or -current. This problem is usually attributed to too much interrupt latency. My question is, how much latency is "too much"? Which interrupt has to be locked out for how long in order to see these messages? John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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