I've got ~ 15 machines with dual Hyper-threaded CPUs (some Intel, some AMD64,) and all run RHEL ES 3.5 with no CPU-related problems. Regards, Gavin McDonald ======================== EVI Logistic Enterprises email: me@xxxxxxxxxxxx phone: (604) 313-3845 > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list- > bounces@xxxxxxxxxx] On Behalf Of Martin Campbell > Sent: Wednesday, January 11, 2006 11:28 AM > To: redhat-list@xxxxxxxxxx > Subject: Re: redhat detecting too many cpus? > > the Intel Xeon's chips come with hyper-threading. Hyper-Threading is > basically just a clever way of making a single chip operate like two > separate devices without implementing two cores on one die ... i think > its intel's pre cursor to multi core chips. > > You can disable hyper threading, i've heard of some people talking > about hyper-threading having a negative effect on RHAS ... but i'm not > sure - perhaps some else on this list might be able to comment? > > ta > martin. > > > Quoting Harjinder Singh <p_singhha@xxxxxxxxx>: > > > I'm currently running Red Hat ES 4.0 on a server, which has two > > Xeon 2.8 MHz Processors, installed. However when I run cat > > /proc/cpuinfo to retrieve the CPU info it lists 4 processors > > installed. > > > > Is there something wrong with the configuration of my Linux > > installation? Does anyone know why it would list 4 cpus when I only > > have 2 installed? > > > > Below is the out of cat /proc/cpuinfo, Thanks! > > > > processor : 0 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 2 > > model name : Intel(R) Xeon(TM) CPU 2.80GHz > > stepping : 5 > > cpu MHz : 2788.974 > > cache size : 512 KB > > physical id : 0 > > siblings : 2 > > core id : 0 > > cpu cores : 1 > > 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 mtrr pge mca > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid > > xtpr > > bogomips : 5488.64 > > > > processor : 1 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 2 > > model name : Intel(R) Xeon(TM) CPU 2.80GHz > > stepping : 5 > > cpu MHz : 2788.974 > > cache size : 512 KB > > physical id : 0 > > siblings : 2 > > core id : 0 > > cpu cores : 1 > > 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 mtrr pge mca > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid > > xtpr > > bogomips : 5570.56 > > > > processor : 2 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 2 > > model name : Intel(R) Xeon(TM) CPU 2.80GHz > > stepping : 5 > > cpu MHz : 2788.974 > > cache size : 512 KB > > physical id : 3 > > siblings : 2 > > core id : 3 > > cpu cores : 1 > > 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 mtrr pge mca > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid > > xtpr > > bogomips : 5554.17 > > > > processor : 3 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 2 > > model name : Intel(R) Xeon(TM) CPU 2.80GHz > > stepping : 5 > > cpu MHz : 2788.974 > > cache size : 512 KB > > physical id : 3 > > siblings : 2 > > core id : 3 > > cpu cores : 1 > > 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 mtrr pge mca > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid > > xtpr > > bogomips : 5570.56 > > > > > > > > > > > > > --------------------------------- > > Yahoo! Photos > > Got holiday prints? See all the ways to get quality prints in your > > hands ASAP. > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
