Re: [gentoo-user] Are the flags in /proc/cpuinfo accurate?
On Fri, 2005-02-11 at 05:32 -0500, Bradley Serbu wrote: > My flags tell me that I have a hyperthreading capable processor, which > is new to my knowledge. I am curious if the output is garunteed correct > before I compile the dual-processor options in my kernel. > > I have a Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz I've never heard of them being wrong, as for "guaranteed", not sure I'd go that far. I'm pretty sure you're going to be enabling hyperthreading (HT), not SMP, but I could be wrong. Keep your old kernel around, then add an additional entry for it to your bootloader. Then if something goes wrong you can fall back to that. -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Are the flags in /proc/cpuinfo accurate?
For all that are interested. I went ahead and built my kernel with Symetric Muliprocessing support enabled and didn't have a problem. However I didn't see another CPU show up and the results of dmesg said HyperThreading was disabled. After some further research online with the P4M processor I determined that allthough the flag "ht" was in my /proc/cpuinfo the chip infact *does not* have support for hyperthreading. - Brad fire-eyes wrote: On Fri, 2005-02-11 at 05:32 -0500, Bradley Serbu wrote: My flags tell me that I have a hyperthreading capable processor, which is new to my knowledge. I am curious if the output is garunteed correct before I compile the dual-processor options in my kernel. I have a Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz I've never heard of them being wrong, as for "guaranteed", not sure I'd go that far. I'm pretty sure you're going to be enabling hyperthreading (HT), not SMP, but I could be wrong. Keep your old kernel around, then add an additional entry for it to your bootloader. Then if something goes wrong you can fall back to that. -- gentoo-user@gentoo.org mailing list -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Are the flags in /proc/cpuinfo accurate?
On Fri, 11 Feb 2005, fire-eyes wrote: > I've never heard of them being wrong, as for "guaranteed", not sure I'd > go that far. I don't remember hyperthreading being enabled for pentium 4 mobile chips but I could be wrong. > I'm pretty sure you're going to be enabling hyperthreading (HT), not > SMP, but I could be wrong. To enable smt you need to enable smp... Besides, an smp kernel works nicely for an non-smp system as well... > Keep your old kernel around, then add an additional entry for it to your > bootloader. Then if something goes wrong you can fall back to that. That's always a good option. Best regards Peter K -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Are the flags in /proc/cpuinfo accurate?
Peter Karlsson wrote: To enable smt you need to enable smp... Besides, an smp kernel works nicely for an non-smp system as well... What benefits does a kernel configuration like this have? The results in dmesg show Hyperthreading as disabled. - Brad -- gentoo-user@gentoo.org mailing list
