Date: Thu, 23 Jun 2005 22:58:54 +0200 From: Jens Schweikhardt <schweikh@schweikhardt.net> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: Timekeeping hosed by factor 3, high lapic[01] interrupt rates Message-ID: <20050623205854.GA763@schweikhardt.net> In-Reply-To: <200506221057.48595.jhb@FreeBSD.org> References: <20050516113420.GA786@schweikhardt.net> <200506201344.10176.jhb@FreeBSD.org> <20050621195113.GB840@schweikhardt.net> <200506221057.48595.jhb@FreeBSD.org>
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John et al, On Wed, Jun 22, 2005 at 10:57:47AM -0400, John Baldwin wrote: # On Tuesday 21 June 2005 03:51 pm, Jens Schweikhardt wrote: # > John, # > # > # > See # > http://lists.freebsd.org/pipermail/freebsd-current/2005-May/050210.html # > # > for the whole thread. # > # # > # I did glance over it, but I don't really have time to read every e-mail # > on # current@ in detail. :( Do you have verbose dmesg's for both cases? # > If so, # can you get the 'lapic: Divisor' lines from each boot? # > # > Sure, they are the same: # > lapic: Divisor 2, Frequency 99829738 hz # > # > It appears Chris Gilbert has the same problem, see "Timekeeping gone # > whack in 6-CURRENT" on this list. # # Ok, this is weird. Does this happen if you disable SMP via # 'kern.smp.disabled=1' from the loader? No, with "set kern.smp.disabled=1" at the loader prompt, timekeeping is ok and vmstat -i displays interrupt total rate irq1: atkbd0 684 3 irq13: npx0 1 0 irq14: ata0 63 0 irq15: ata1 109 0 irq18: em0 27 0 irq24: ahd0 23192 106 irq25: ahc0 16 0 lapic0: timer 430979 1986 Total 455071 2097 Regards, Jens -- Jens Schweikhardt http://www.schweikhardt.net/ SIGSIG -- signature too long (core dumped)
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