Re: [RFC/PATCHSET 0/6] perf kmem: Implement page allocation analysis (v1)

Namhyung Kim
2015-03-16T02:16:02Z

On Thu, Mar 12, 2015 at 11:58:37PM +0900, Namhyung Kim wrote:
> On Thu, Mar 12, 2015 at 11:41:19AM +0100, Ingo Molnar wrote:
> > So there's one thing that would be useful: to track pages allocated on
> > one node, but freed on another. Those kinds of allocation/free
> > patterns are especially expensive and might make sense to visualize.
>
> I think it can be done easily as slab analysis already contains the info.

Hmm.. it seems slab events provide the node info but page events
don't. Without it, I don't know which node a page is in so cannot
determine such cross-node alloc+free patterns.

Thanks,
Namhyung