linux-kernel - Re: [PATCH RFC 02/10] perf,tools: Support new sort type --socket

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Date:	Mon, 24 Aug 2015 16:27:53 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	"Liang, Kan" <kan.liang@...el.com>
Cc:	"acme@...nel.org" <acme@...nel.org>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"jolsa@...nel.org" <jolsa@...nel.org>,
	"namhyung@...nel.org" <namhyung@...nel.org>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"eranian@...gle.com" <eranian@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC 02/10] perf,tools: Support new sort type --socket

On Mon, Aug 24, 2015 at 02:22:08PM +0000, Liang, Kan wrote:
> > 
> > On Fri, Aug 21, 2015 at 08:25:24PM +0000, Liang, Kan wrote:
> > 
> > SNIP
> > 
> > > >
> > > > we need global topology information in perf.data and use the mapping
> > > > from there, we can't use current server info
> > > >
> > > > we currently store core_siblings_list and thread_siblings_list, in
> > > > topology FEATURE, which is probably not enough
> > > >
> > >
> > > core_siblings_list  includes the cpu list in the same socket.
> > > thread_siblings_list includes the cpu list in the same core.
> > > numa_nodes includes the cpu list for each node.
> > >
> > > It looks we have enough data from topology FEATURE.
> > 
> > hum, haven't hecked deeply.. how will you get core id for cpu?
> >
> 
> from thread_siblings_list.
>  I just noticed that svg_build_topology_map did the similar thing to
> get topology map for timechart from perf header.

could you please provide both functions then cpu -> core, cpu -> socket

thanks,
jirka
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