Eric H. Johnson wrote: >John, > >You are correct, SMP support is right above the selection for processor >family and was enabled for all three kernels. Under the Debian Lenny stock >kernel the same board shows 4 processors and 2 CPU Cores. > > One performance note: you should probably disable hyperthreading on this CPU. I think the latest benchmark I read (probably not for this exact CPU) said that power usage was higher and performance was lower with HT enabled. This is probably a BIOS thing, and there may be a kernel option as well.
>Likewise the standard rtai kernel used by EMC and the three kernels I built >all show a single processor, and no entry for cpu cores under proc/cpuinfo. > >I will see what I can figure out as far as a diff. > > Take a look in the ACPI/power management sections. I think there was some part of ACPI that had to be enabled so that the second core could be powered up. If you do a diff on the two configs, there will likely be a lot of noise due to differences in selected drivers/filesystems/etc. I don't recall seeing how you started making this config. Did you take the stock EMC2 RT config and "make oldconfig", start from defaults, "make oldconfig" with the stock Ubuntu kernel ... ? - Steve ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
