Date: Mon, 10 Jan 2005 15:32:42 -0500 From: John Baldwin <jhb@FreeBSD.org> To: freebsd-smp@FreeBSD.org Cc: bde@FreeBSD.org Subject: Re: 5.3-RELEASE: SMP: system clock has died Message-ID: <200501101532.42149.jhb@FreeBSD.org> In-Reply-To: <20050109033319.129DD2072@towerrecords.minidns.net> References: <BAY24-F13EC7615A3B8EB3EB01572CC960@phx.gbl> <20050109033319.129DD2072@towerrecords.minidns.net>
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On Saturday 08 January 2005 10:33 pm, UEMURA (fka. MAENAKA) Tetsuya wrote: > Posted on Sat, 08 Jan 2005 17:31:56 -0700 > by author Stephane Raimbault <segr@hotmail.com> > > > I have an ASUS P2B-DS motherboard with dual P2 400MHz CPU's. I have > > compiled the SMP kernel and noticed that something is not right. In > > "top" the CPU values indicate 0% across the board, even idle! > > I found 5 PRs regarding this symptom. On my 5.3-STABLE server, patch > attached with PR 17800 solved the problem. > > http://www.freebsd.org/cgi/query-pr.cgi?pr=17800 > http://www.freebsd.org/cgi/query-pr.cgi?pr=60385 > http://www.freebsd.org/cgi/query-pr.cgi?pr=30310 > http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/30310 > http://www.freebsd.org/cgi/query-pr.cgi?pr=73989 > > For information, Tyan S1867DLUAN Thunder 2500 dual Slot 1 motherboard > always shows correct CPU usage on FreeBSD 5.x since early 2003, its > Socket 370 alternative S2567U3AN Thuder HEsl shows incorrect on > 5.3-BETA4 and recent 5.3-STABLE without patch. Can you please try the patch below. It drains pending interrupts any time we turn interrupts back on on the RTC including during resume: Index: i386/isa/clock.c =================================================================== RCS file: /usr/cvs/src/sys/i386/isa/clock.c,v retrieving revision 1.213 diff -u -r1.213 clock.c --- i386/isa/clock.c 11 Jul 2004 17:50:59 -0000 1.213 +++ i386/isa/clock.c 10 Jan 2005 19:58:51 -0000 @@ -712,6 +712,7 @@ writertc(RTC_STATUSB, RTCSB_24HR); writertc(RTC_STATUSA, rtc_statusa); writertc(RTC_STATUSB, rtc_statusb); + rtcin(RTC_INTR); } /* @@ -911,6 +912,7 @@ /* Reenable RTC updates and interrupts. */ writertc(RTC_STATUSB, rtc_statusb); + rtcin(RTC_INTR); } @@ -957,6 +959,7 @@ INTR_TYPE_CLK | INTR_FAST, NULL); writertc(RTC_STATUSB, rtc_statusb); + rtcin(RTC_INTR); } init_TSC_tc(); -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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