Date: Fri, 8 Jan 1999 00:29:17 -0800 From: Steve Watt <steve@Watt.COM> To: Mark Murray <mark@grondar.za> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: IRQ entropy causes panics? Message-ID: <19990108002916.A12230@wattres.Watt.COM> In-Reply-To: <199901080823.KAA17332@greenpeace.grondar.za>; from Mark Murray on Fri, Jan 08, 1999 at 10:23:02AM %2B0200 References: <19990106003122.A1906@wattres.Watt.COM> <199901080658.IAA17036@greenpeace.grondar.za> <19990107231151.A7494@wattres.Watt.COM> <199901080823.KAA17332@greenpeace.grondar.za>
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On Fri, Jan 08, 1999 at 10:23:02AM +0200, Mark Murray wrote: > Steve Watt wrote: > > I'm not hooking IRQ 0; rather, it's the IRQ that pci bus 0 happens to > > route to, irq 10. However, if I hook all of 3,4,5,7,9,10,12,14,15 I get > > a system that panics on a *very* regular basis. With that list, the system > > will almost always panic within an hour. > > OK - on a system with no IRQs hooked, please stare at the screen > that "systat 2 -vmstat" gives you; any irq that has a high rate > may be a problem (I have some doubts about irq9 as well). The IRQ that my PPP link is on is often (and is at the moment) high-rate, for some definition thereof. It's seeing about 800 int/sec, eyeball averaged. Thank goodness for 16550s; that's a 128k ISDN modem, the port's running 115.2k. What it sounds like is that I shouldn't use "high rate" (for some definition thereof -- more than the clock irqs?) things to feed the entropy pool. That probably ought to be documented somewhere. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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