Re: [PATCH 2/3] perf stat: Don't require a workload when usingsystem wide or CPU options

From: Ingo Molnar
Date: Tue Oct 08 2013 - 15:25:05 EST



* Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx> wrote:

> Em Tue, Oct 08, 2013 at 02:51:13PM +0200, Ingo Molnar escreveu:
> > Btw., would anyone be interested in adding CPU and node binding options to
> > perf stat?
> >
> > There's code to do something like that in tools/perf/bench/numa.c:
> >
> > /* Special option string parsing callbacks: */
> > OPT_CALLBACK('C', "cpus", NULL, "cpu[,cpu2,...cpuN]",
> > "bind the first N tasks to these specific cpus (the rest is unbound)",
> > parse_cpus_opt),
> > OPT_CALLBACK('M', "memnodes", NULL, "node[,node2,...nodeN]",
> > "bind the first N tasks to these specific memory nodes (the rest is unbound)",
> > parse_nodes_opt),
>
> As a convenience to using:
>
> taskset -c cpu-list perf stat -C cpu-list workload
>
> ?

Yeah, something like that would be handy I think.

Ingo
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