Messages in this thread | | | Date | Tue, 29 Apr 2008 16:28:19 +0200 | From | Ingo Molnar <> | Subject | Re: 2.6.25 slow boot/reboot |
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* Glauber Costa <gcosta@redhat.com> wrote:
> [ 1.375711] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ > sharing enabled > [ 4.399907] floppy0: no floppy controllers found > > a 90-second delay is not what's happening, or at least, not what the > kernel is seeing. So my bet would be something clock-related. Probably > the system's clocksource is not running the time correctly, which is > causing system events to be delayed. I fail to see, however, how does > the patch you bisected to influences this. Ingo, do you have any idea?
the first thing to check, does latest x86.git work fine:
http://people.redhat.com/mingo/x86.git/README
? We've got fixes queued up - in particular one could result in 'slow' systems by virtue of denying an ioremap():
Subject: revert: "x86: ioremap(), extend check to all RAM pages"
maybe the bisection went haywire.
Or the secondary core booted up in such a sucky way that it causes such massive slowdowns? Perhaps we are flooding the system with local APIC timer interrupts or other interrupts?
Ingo
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