On Fri, Oct 28, 2011 at 6:10 AM, Christoph Lameter <cl@xxxxxxxxxx> wrote: > On Sun, 23 Oct 2011, Gilad Ben-Yossef wrote: > >> +/* Which CPUs have per cpu pages */ >> +cpumask_var_t cpus_with_pcp; >> +static DEFINE_PER_CPU(unsigned long, total_cpu_pcp_count); > > This increases the cache footprint of a hot vm path. Is it possible to do > the same than what you did for slub? Run a loop over all zones when > draining to check for remaining pcp pages and build the set of cpus > needing IPIs temporarily while draining? > Sounds like a good idea. I will give it a shot. Thanks, Gilad -- Gilad Ben-Yossef Chief Coffee Drinker gilad@xxxxxxxxxxxxx Israel Cell: +972-52-8260388 US Cell: +1-973-8260388 http://benyossef.com "I've seen things you people wouldn't believe. Goto statements used to implement co-routines. I watched C structures being stored in registers. All those moments will be lost in time... like tears in rain... Time to die. " -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href