SMP kernel uninstalled, but hyperthreading?
I ran afoul of the bug described in this article, about an SMP kernel being installed on a single-processor machine, and tried to fix it by following the instructions in the article. http://sdb.suse.de/en/sdb/html/fhassel_p4.html I verified with "uname -a" that I now have a non-SMP (k_dflt) kernel installed. My question is, should I be worried that the output from "cat /proc/cpuinfo" still contains the "ht" hyperthreading flag? It does not appear under Red Hat 7.2 . Is hyperthreading supposed to be turned on? If not, how do I disable it? I have a single Pentium 4, running both SuSE 8.0 and Red Hat 7.2 . Thanks, Peter Taylor
well I have a smp machine but I don't have the 'ht' flag processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 933.371 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 : 1861.22 processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 933.371 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 : 1861.22 What is 'ht' anyway ... ??? Linux linux-box 2.4.18-4GB-SMP #1 SMP Fri May 17 23:36:01 EEST 2002 i686 unknown On Sunday 26 May 2002 04:42, Peter Taylor wrote:
I ran afoul of the bug described in this article, about an SMP kernel being installed on a single-processor machine, and tried to fix it by following the instructions in the article.
http://sdb.suse.de/en/sdb/html/fhassel_p4.html
I verified with "uname -a" that I now have a non-SMP (k_dflt) kernel installed. My question is, should I be worried that the output from "cat /proc/cpuinfo" still contains the "ht" hyperthreading flag? It does not appear under Red Hat 7.2 . Is hyperthreading supposed to be turned on? If not, how do I disable it?
I have a single Pentium 4, running both SuSE 8.0 and Red Hat 7.2 .
Thanks, Peter Taylor
On Monday 27 May 2002 02:11 am, you wrote:
well I have a smp machine but I don't have the 'ht' flag
model name : Pentium III (Coppermine)
What is 'ht' anyway ... ???
ht = hyperthreading. I think this is a Pentium 4 thing. It seems to be basically a separate thing from SMP. Thanks. Peter Taylor
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Peter Taylor
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suse_ground_zero