On (09/05/05 23:28), michael wrote: > On Mon, 2005-05-09 at 23:20 +0100, Clive Menzies wrote: > > Hi > > > > I have a couple of servers (identical spec) with the advertised cpu as: > > 3.2GHz 3.2GHz Intel P4 Prescott > > > > If I boot from Knoppix I get: > > # uname -a > > > > Linux Knoppix 2.6.7 #2 SMP Wed Jul 28 04:25:36 CEST 2004 i686 GNU/Linux > > > > # cat /proc/cpuinfo > > > > processor : 0 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 3 > > model name : Intel(R) Pentium(R) 4 CPU 3.20GHz > > stepping : 4 > > cpu MHz : 3193.360 > > cache size : 1024 KB > > physical id : 0 > > siblings : 2 > > fdiv_bug : no > > hlt_bug : no > > f00f_bug : no > > coma_bug : no > > fpu : yes > > fpu_exception : yes > > cpuid level : 5 > > wp : yes > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni > > monitor ds_cpl cidbogomips : 6324.22 > > > > processor : 1 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 3 > > model name : Intel(R) Pentium(R) 4 CPU 3.20GHz > > stepping : 4 > > cpu MHz : 3193.360 > > cache size : 1024 KB > > physical id : 0 > > siblings : 2 > > fdiv_bug : no > > hlt_bug : no > > f00f_bug : no > > coma_bug : no > > fpu : yes > > fpu_exception : yes > > cpuid level : 5 > > wp : yes > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni > > monitor ds_cpl cidbogomips : 6373.37 > > > > However, running sarge I can't get an smp kernel to boot - it hangs on > > 'acpi' > > > > # uname -a > > Linux Venus 2.6.8-1-686 #1 Thu Nov 25 04:34:30 UTC 2004 i686 GNU/Linux > > > > # cat /proc/cpuinfo > > processor : 0 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 3 > > model name : Intel(R) Pentium(R) 4 CPU 3.20GHz > > stepping : 4 > > cpu MHz : 3193.438 > > cache size : 1024 KB > > fdiv_bug : no > > hlt_bug : no > > f00f_bug : no > > coma_bug : no > > fpu : yes > > fpu_exception : yes > > cpuid level : 5 > > wp : yes > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni > > monitor ds_cpl cidbogomips : 6324.22 > > > > I guess it's something to do with hyperthreading (which shows up in the > > BIOS). I would welcome some enlightenment as to why Knoppix reports two > > processors but sarge (and Debian From Scratch) only seem to recognise > > one. > > > For >1 processor, you need an SMP kernel but the one you quote for Sarge > isn't. I got mine from backports. I turn off HT (but am still on 2.4 > kernel which isn't as good apparently at scheduling as 2.6) since on my > 2 Xeon box, with HT on it's as likely 2 threads run on phy PE#0 rather > than one on PE#0 and other on PE#1 > > n$ uname -a > Linux ratty 2.4.27-1-686-smp #1 SMP Wed Dec 1 19:50:17 JST 2004 i686 > GNU/Linux > > (Note the "-smp") Thanks Michael
Yes - I know I need an -smp kernel but I can't seem to get the 2.6.8 smp kernel to boot - I tried the 2.6.11 smp kernel (from sid) which booted but gave rise to another problem - it wouldn't bring up the software raid1 on boot (which was the problem I had originally when installing the machines). But it didn't report two processors which is why I'm somewhat confused - these are a client's production servers and so I'm reluctant to muck around with them too much. I don't think I can use a 2.4 kernel because the raid configuration is on a pair of SATA drives. I need to take one machine down and verify whether there are actually two processors in there. It was a few month s ago that I set them up and I was pretty sure there were 2 but because I needed to get them up in a hurry and I couldn't get the smp kernel to work properly, I stuck with the single processor kernel. Regards Clive -- www.clivemenzies.co.uk ... ...strategies for business -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
