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List:       linux-smp
Subject:    RE: serial input overruns with P2B-DS
From:       Chris Keladis <chris () twilight ! tpgi ! com ! au>
Date:       1999-07-31 23:57:43
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Hi Eric,

I run a P2B-DS mainboard here with two PIII-500's fitted, and i dont see the
error you report.

However i use a 2.2.x series kernel (2.2.10-ac5).

I suspect if you move to 2.0.37, or a recent 2.2 series kernel that shouldn't
be an issue. (I beleive there were alot of SMP IRQ cleanups done in the recent
kernels).



Regards,

Chris.


On 31-Jul-99 Eric Berenguier wrote:

> Hello,
> 
> I've got a linux box with an Asus P2B-DS mainboard with two PII-233
> running linux-2.0.35, and i'm getting a lot of messages like :
> 
> Jul 31 17:44:45 hal kernel: ttyS1: 1 input overrun(s) 
> 
> This also cause corruption of data transmitted.
> 
> It happens with the 2 onboard serial ports and with serial ports on
> an ISA i/o card.
> 
> 
> This does not happen when running a non SMP kernel (the same kernel but
> with SMP=1 commented)
> 
> 
> Any idea ?
> 
> 
> 
> Eric Berenguier
> 
> 
> PS: Here is what Linux says about my serial ports & processors :
> 
> 
> tty00 at 0x03f8 (irq = 4) is a 16550A
> tty01 at 0x02f8 (irq = 3) is a 16550A
> tty02 at 0x03e8 (irq = 4) is a 16450
> tty03 at 0x02e8 (irq = 3) is a 16450
> 
> (btw problem still exists if i remove the tty02/3 card)
> 
> 
> 
> processor       : 0
> cpu             : 686
> model           : 3
> vendor_id       : GenuineIntel
> stepping        : 4
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid           : yes
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic 11 mtrr pge mca
> cmov mmx
> bogomips        : 233.47
> 
> processor       : 1
> cpu             : 686
> model           : 3
> vendor_id       : GenuineIntel
> stepping        : 4
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid           : yes
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic 11 mtrr pge mca
> cmov mmx
> bogomips        : 233.47
> 
> 
> 
> 
> -
> Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/mentre/smp-faq/
> To Unsubscribe: send "unsubscribe linux-smp" to majordomo@vger.rutgers.edu


----------------------------------
Chris Keladis
TPG Internet System Administrator

E-Mail: Chris Keladis <chris@twilight.tpgi.com.au>
Local Date: 01-Aug-99
Local Time: 09:52:07
----------------------------------
-
Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/mentre/smp-faq/
To Unsubscribe: send "unsubscribe linux-smp" to majordomo@vger.rutgers.edu

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