On Fri, Oct 28, 2011 at 6:10 AM, Christoph Lameter <cl@xxxxxxxxxx> wrote:
On Sun, 23 Oct 2011, Gilad Ben-Yossef wrote:This increases the cache footprint of a hot vm path. Is it possible to do
> +/* Which CPUs have per cpu pages */
> +cpumask_var_t cpus_with_pcp;
> +static DEFINE_PER_CPU(unsigned long, total_cpu_pcp_count);
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
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gilad@xxxxxxxxxxxxx
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"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. "