On Tue, Sep 16, 2014 at 01:17:44AM -0700, Dave Hansen wrote: > >> The sysfs effects here cause an issue with the hwloc tool where > >> it gets confused and thinks there are more sockets than are > >> physically present. > > > > Meh, so then we need another mask. > > s390 has this concept of a "book" although it's not obvious at all where > this fits in to the hierarchy to me. The help text and comments are > pretty funny: > > Book scheduler support improves the CPU scheduler's decision > making when dealing with machines that have several books. > > Wow, really? Book scheduling helps with books? I would have never > guessed.
I'm glad the help text did enlighten you. > Wish I knew what a book was. :) Google helped a bit: > http://sysmagazine.com/posts/150430/ > but it's still not clear. I think a book is below a node? > > SMT <= LLC <= MC <= BOOK <= NODE This one is correct. s390 does not have NUMA support. So we have one node with multiple books. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
