From: Ingo Molnar <mingo@kernel.org>
To: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: linux-kernel@vger.kernel.org, "David Ahern" <dsahern@gmail.com>,
"Namhyung Kim" <namhyung@kernel.org>,
"Jiri Olsa" <jolsa@redhat.com>,
"Adrian Hunter" <adrian.hunter@intel.com>,
"Frédéric Weisbecker" <fweisbec@gmail.com>
Subject: perf top -u <uid> does not seem to be working
Date: Wed, 13 Nov 2013 00:22:49 +0100 [thread overview]
Message-ID: <20131112232249.GA31384@gmail.com> (raw)
Hm, this is unexpected I think:
hubble:~> perf top --stdio -u mingo
Error:
You may not have permission to collect stats.
Consider tweaking /proc/sys/kernel/perf_event_paranoid:
-1 - Not paranoid at all
0 - Disallow raw tracepoint access for unpriv
1 - Disallow cpu events for unpriv
2 - Disallow kernel profiling for unpriv
hubble:~> cat /proc/sys/kernel/perf_event_paranoid
-1
hubble:~> perf top --stdio -u
Error: switch `u' requires a value
usage: perf top [<options>]
-u, --uid <user> user to profile
(perf is the latest version from tip:perf/core)
Thanks,
Ingo
next reply other threads:[~2013-11-12 23:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-12 23:22 Ingo Molnar [this message]
2013-11-12 23:26 ` perf top -u <uid> does not seem to be working Ingo Molnar
2013-11-15 7:24 ` [tip:perf/urgent] perf top: Add missing newline if the 'uid' is invalid tip-bot for Ingo Molnar
2013-11-13 17:59 ` perf top -u <uid> does not seem to be working Arnaldo Carvalho de Melo
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