Rogério Brito wrote: > I bought recently a new computer with a Pentium D processor (which is > supposed to have two cores, if I understand it) and one of the first > things that I did with it was to enable SMP. >
I don't think Pentium D processors are suppose to have two cores. Some of them have hyperthreading which can make then behave like they have two cores. > Seeing in /proc/cpuinfo that the CPU supports Hyperthreading (the ht > flag is in the supported CPU features of this computer), Just because the ht flag is there doesn't mean that supports hyperthreading (strange but true). > I compiled a > brand new kernel (2.6.19-rc4 at the time) and answered Yes to the option > of using Symmetrict Multithreading (aka Hyperthreading in Intel-speak). > > I posted things that I thought were relevant at > http://www.ime.usp.br/~rbrito/pentium-d/ and it shows two processors, > but I don't actually know if they are two "real" processors (cores) or > two "virtual" processors (1 processor with hyperthreading). Again, I think you have one core which looks like two processors. > Also, the dmesg put there doesn't mention that the system has > hyperthreading enabled after I booted it with the acpi=ht kernel > option. If you run "top" and see some process names with "/0" or "/1" at the end, then you are running an "smp" kernel. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]