nixCraft

Hi there,

I just installed SuSe 10.0 on my anohter linux machine. This machine has 2 processors. When it boots, BIOS also sees 2 processors. The problem is SuSe 10.0 only recognizes it as single processor. I can fix this easy in Windows XP, but linux seems to be so difficult for me. Can anyone give me an idea to work on this please? Here is the output of my cpuinfo.

linux:~ # cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 3
cpu MHz : 789.233
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips : 1579.40

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 3
cpu MHz : 789.233
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips : 1578.34


See? The output above is saying "processor 1" I really appreciate that.

Install smp kernel using yast2 or rpm command, you must boot suse with SMP kernel. From your output I can see 2 processors. So Linux did recognized your CPU

Verify that Linux got 2 cpu
Output:
0 and 1 means you got 2 CPU or 1 CPU with 2 core (dual core), if you see 0,1,2,3 it means you have 4 cpu or 2 cpu with 4 core (dual core)

You must run smp kernel, run following command for verification:
Output (look for SMP word)

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Vivek Gite
Linux Evangelist
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Do you run a Linux? Let's face it, you need help

Thanks for your help. So, you said that my linux already recognized 2 processors, 0 and 1. Question is, is my linux machine running on 2 processors at this time? If so, do I still need something like you said smp kernel? Why do I need that? Thanks again.

Without SMP kernel linux will not see 2 or more than 2 CPUs. SMP (Symmetric multiprocessing i.e. a multiprocessing architecture in which multiple CPUs are installed and only SMP kernel can use them) systems range from two to as many as 32 or more processors on x86 hardware.

By default Linux installation detects SMP support and installs SMP CPU. Way back in late 90s I had to install SMP kernel. These days it is all done for you ... good question though

__________________
Vivek Gite
Linux Evangelist
Be proud RHEL user, and let the world know about your enterprise choices! Join RedHat user group.
Always use CODE tags for posting system output and commands!
Do you run a Linux? Let's face it, you need help

Thank you so much. You're very helpful. Every time I got an issue, this website helps me a lot. I feel like I owe too much to all of you guys in here. I am wondering can you open an online account such as paypal so that people can donate something? I feel like donating a little bit to keep this site up and running. Everyone in here puts a hand will help. This is just my suggestion.

Anyway, I got a problem and I hope you can help me with. I added a second hard disk drive on my Ubuntu 6.10 machine. I can create partition using /sbin/fdisk..... Everything goes smooth. However, how can I mount it? In SuSe, I can do it by editing /etc/fstab and add /dev/sdb1 /Drive1 ext3 default 1 1, and it automatically mount the second drive for me after reboots.

sdb is my second scsi drive. I did exactly the same like I did in SuSe, but my Ubuntu still doesn't mount my second drive. What is the proper way to do that in Ubuntu? Very appreciate that.

Let me answer 2nd part:

Create a dir:
Append code /etc/fstab:
Mount it:
Or just reboot the box to test the same
Good idea, if you feel lucky and think that this site / vivek has helped you use paypal. You can use link from his blog nixCraft :: Donate money.

To vivek, add donation link so that people can bare the cost of hosting and keep running the site

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May the force with you!

Thank you very much. Very appreciate that.