Date: Wed, 9 Apr 2003 12:16:35 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: hackers@freebsd.org Cc: rizzo@icir.org Subject: Re: realtime problem Message-ID: <200304091916.h39JGZ2x064053@strings.polstra.com> In-Reply-To: <20030409121408.A23344@xorpc.icir.org> References: <20030409114957.GN83126@cicely9.cicely.de> <20030409144042.B901@beagle.fokus.fraunhofer.de> <200304091900.h39J0igT063938@strings.polstra.com> <20030409121408.A23344@xorpc.icir.org>
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In article <20030409121408.A23344@xorpc.icir.org>, Luigi Rizzo <rizzo@icir.org> wrote: > On Wed, Apr 09, 2003 at 12:00:44PM -0700, John Polstra wrote: > ... > > Huh? I'm not aware of any hz-related botches in the mii code. > > Could you give me a specific example? I'd like to fix it if I can > > find it. > > it is not hz-related, the fact is that some PHY events are > handled by busy-waiting in the interrupt service routine > thus causing unpredictable latencies in the response to > interrupts. Ah, I get it now. Thanks for the clarification! John
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