Date: Mon, 27 Aug 2001 10:50:02 -0700 (PDT) From: Martin Blapp <mb@imp.ch> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/30135: Time drifting on STABLE SMP when calling gettimeofday Message-ID: <200108271750.f7RHo2j29464@freefall.freebsd.org>
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The following reply was made to PR kern/30135; it has been noted by GNATS. From: Martin Blapp <mb@imp.ch> To: <freebsd-gnats-submit@FreeBSD.org> Cc: Subject: Re: kern/30135: Time drifting on STABLE SMP when calling gettimeofday Date: Mon, 27 Aug 2001 19:55:23 +0200 (CEST) I've to add: It is a forward timedrifting. And also these lines may be interesting: APIC_IO: Testing 8254 interrupt delivery APIC_IO: Broken MP table detected: 8254 is not connected to IOAPIC #0 intpin 2 APIC_IO: routing 8254 via 8259 and IOAPIC #0 intpin 0 On single CPU on the same CPU there is NO time-drifting. So it is related to SMP. But why does gettimeofday() modify the system counter only on SMP systems ? Martin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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