Messages in this thread | | | Date | Mon, 9 Nov 2015 10:58:06 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH v10 01/22] perf tools: Add 'perf-config' command |
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Em Mon, Nov 09, 2015 at 11:32:54AM +0900, Taeung Song escreveu: > The perf configuration file contains many variables to change various > aspects of each of its tools, including output, disk usage, etc. > But looking through state of configuration is difficult and > there's no knowing what kind of other variables except variables > in perfconfig.example exist. So This patch adds 'perf-config' > command with '--list' option. > > perf config [options] > > display current perf config variables. > # perf config > or > # perf config -l | --list
So, trying to use it:
$ perf config $
It does nothing, it should either list the configuration values, I think probably showing just what is in the ~/.perfconfig files, i.e. things the user explicitely changed, or show an usage message, like all the other tools, for instance:
$ perf stat
Usage: perf stat [<options>] [<command>]
-a, --all-cpus system-wide collection from all CPUs -A, --no-aggr disable CPU count aggregation -B, --big-num print large numbers with thousands' separators -C, --cpu <cpu> list of cpus to monitor in system-wide <SNIP>
'perf evlist' alternatively does, like perf list, show what a default action:
$ perf evlist cycles:pp $
And:
$ perf list | head -5 branch-instructions OR branches [Hardware event] branch-misses [Hardware event] bus-cycles [Hardware event] cache-misses [Hardware event] cache-references [Hardware event] $
While 'perf config' does nothing :-\
I suggest you do just like 'perf evlist' and 'perf list'.
- Arnaldo
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