On Thu, Apr 7, 2016 at 2:14 PM, Jesper Dangaard Brouer <bro...@redhat.com> wrote: > > On Wed, 6 Apr 2016 14:45:30 -0700 Kees Cook <keesc...@chromium.org> wrote: > >> On Wed, Apr 6, 2016 at 12:35 PM, Thomas Garnier <thgar...@google.com> wrote: > [...] >> > re-used on slab creation for performance. >> >> I'd like to see some benchmark results for this so the Kconfig can >> include the performance characteristics. I recommend using hackbench >> and kernel build times with a before/after comparison. >> > > It looks like it only happens on init, right? (Thus must bench tools > might not be the right choice).
Oh! Yes, you're right. I entirely missed that detail. :) 0-cost randomization! Sounds good to me. :) -Kees > > My slab tools for benchmarking the fastpath is here: > > https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/mm/slab_bulk_test01.c > > And I also carry a version of Christoph's slab bench tool: > > https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/mm/slab_test.c > > -- > Best regards, > Jesper Dangaard Brouer > MSc.CS, Principal Kernel Engineer at Red Hat > Author of http://www.iptv-analyzer.org > LinkedIn: http://www.linkedin.com/in/brouer -- Kees Cook Chrome OS & Brillo Security
