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

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Date:	Thu, 27 Aug 2015 18:29:47 +0000
From:	"Liang, Kan" <kan.liang@...el.com>
To:	Jiri Olsa <jolsa@...hat.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 09:30:21PM +0200, Jiri Olsa wrote:
> > On Mon, Aug 24, 2015 at 04:47:12PM +0000, Liang, Kan wrote:
> > >
> > >
> > > > 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
> > > >
> > >
> > > Do you mean something like this?
> > > Store cpu->socket and cpu->core in perf_session_env.
> >
> > yep, seems ok
> 
> any chance you could send out this one? I'd need to use it in my other stuff
> 

Ok I will send out this patch as a separate patch first.


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