A Dimarts 25 Setembre 2007 11:11, Gilles Chanteperdrix va escriure: > On 9/25/07, Leopold Palomo-Avellaneda <[EMAIL PROTECTED]> wrote: > > A Dimarts 25 Setembre 2007 10:52, Gilles Chanteperdrix va escriure: > > > On 9/25/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > > Hello Gilles! > > > > > > > > Thank you very much for your reponse. > > > > > > > > LAPIC is disabled in BIOS, so "make menuconfig" does not even give > > > > me the possibility to change it at all. in the .config file I could > > > > find CONFIG_X86_LOCAL_APIC=y. > > > > I f I set it to =n and start "make menuconfig" again, it resets it > > > > to y even if I do not change anything manually. > > > > > > The reason why make menuconfig does not let you change the LAPIC > > > setting is that you selected the "SMP" option. Since your box only has > > > one CPU, you should disable SMP. Then you will be able to enable or > > > disable the local APIC. Note that if your box has an APIC, using it > > > gives better performances. > > > > I have a cpu with multicore (the kernel see 2 cpus) but it's _only_ > > physically one cpu. What I have to choose in the config, smp yes or not? > > Yes, of course, the advice was for juergen, whose kernel only sees one cpu.
Ok, thanks. my box has the problem that I have to disable the apic (noapic) at boot time because of the machine hangs at random. So, after your email, I lost a lot of performance? Regards, Leo _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
