Re: Dual Processor

[hamhey <hamhey_m@mx.dpimail.net>]

Dear sir,

I need your help bacause I tried again and again and I think I've read the 
documentation of kernel that found. 

Here is a short history of what I've done so far:
The server has ASUS CUV4X-D mainboard with Intel Celeron PIII 800 Mhz CPU. The 
bios was 10.14 (downgraded to 10.10 and to upgraded again to 1.14 without any 
result).
Boot of the server shows that the 2 of the processors are recognized and SMP is 
enabled in the bios setting.
The kernel version included in Redhat 7.1 is 2.4.2 which enables the SMP by 
default in installation and get the error message when booting SMP and getting 
IO-APIC error. 
The os can be booted to Linux-up which is one processor enabled. I tried with a 
higher version of kernel, 2.5.8 with the same result.

The server will run web server and database. Would you mind giving some details 
of what you meen by 
"noapic" option on the boot command line.
How can I put this command in files to boot.

Can I fix the interupt problem.

Thanks in advance
Hamid

---------------------------------------------------------------

 
>X-Sieve: cmu-sieve 2.0
>From: "Vladimir G. Ivanovic" <vladimir@acm.org>
>To: hamhey <hamhey_m@peyk.dpimail.net>
>Cc: linux-smp@vger.kernel.org
>Subject: Re: Dual Processor 
>Mime-Version: 1.0 (generated by tm-edit 1.8)
>Date: Tue, 14 May 2002 17:41:15 -0700
>X-RAVMilter-Version: 8.3.0(snapshot 20010925) (peyk)
>
>I recommend that you search the linux-smp archives or use a search
>engine to look on the WWW for the answer to your questions *before*
>asking a mailing list. That way people don't have to answer the same
>question again and again. 
>
>If you had done so, you would have discovered that you should set you
>MPS setting in the BIOS to 1.1 and reboot. If you are still having
>problems, make sure you have the lastest BIOS (rev 1014?) and/or use the
>"noapic" option on the boot command line.
>
>IO-APIC allows both processors to field interrupts. Without IO-APIC,
>only one processor does. Usually, for a desktop machine, this is not a
>calamity. For a web server, it's more of an issue.
>
>If everything is working, your /proc/interrupts should look something
>like:
>
>           CPU0       CPU1       
>  0:    1255948    1257289    IO-APIC-edge  timer
>  1:      15469      15349    IO-APIC-edge  keyboard
>  2:          0          0          XT-PIC  cascade
>  4:      11163      10377    IO-APIC-edge  serial
>  5:      79559      79534   IO-APIC-level  es1371, usb-uhci, usb-uhci
>  8:    9869264    9862018    IO-APIC-edge  rtc
>  9:      17601      17613   IO-APIC-level  sym53c8xx
> 10:     109682     109643   IO-APIC-level  eth0
> 11:         47         50   IO-APIC-level  sym53c8xx
> 12:     136004     138160    IO-APIC-edge  PS/2 Mouse
> 14:        224        134    IO-APIC-edge  ide0
> 15:      29773      28616    IO-APIC-edge  ide1
>NMI:          0          0 
>LOC:    2513322    2513376 
>ERR:          0
>MIS:          0
>
>
>--- Vladimir
>
>--------
>Vladimir G. Ivanovic                        http://leonora.org/~vladimir
>2770 Cowper St.                                         vladimir@acm.org
>Palo Alto, CA 94306-2447                                 +1 650 678 8014
>
>"hm" == hamhey m <hamhey> writes:
>
>  hm> Dear sir/madam
>  hm> I installed Linux redhat 7.1 on Intel platform running 2x Intel-800 Mhz 
>  hm> processor on ASUS CUV4x-D mother board. 
>  hm> One of the CPUs is not cooming up due to the following error message at 
boot:
>
>  hm> --------------------------------------------------------------------
>  hm> Total of 2 processors activated (3207.98 Bogo MIPS). Before bogomips.
>  hm> Boot done.
>  hm> ENABLING IO-APIC IRQs
>  hm> ... changing IO_APIC physical APIC ID to 2 .. ok.
>  hm> Syc=nchronizing Arb IDs 
>  hm> TIMER: vector=49 Pin1=2 testing the IO APIC pin2=0
>
>  hm> WARNING: Unexpected IO-APIC IRQs
>
>  hm> --------------------------------------------------------------------
>
>  hm> Would you mind giving me the reason of getting the reason of the error 
message 
>  hm> at boot time and the system is comming with just on CPU without any 
problem 
>  hm> choosing  Linux-Up option for booting.
>
>
>  hm> Thanks 
>  hm> Hamdi
>
>  hm> -
>  hm> To unsubscribe from this list: send the line "unsubscribe linux-smp" in
>  hm> the body of a message to majordomo@vger.kernel.org
>  hm> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>


------------- End Forwarded Message -------------