From: David Ahern <dsahern@gmail.com>
To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Jiri Olsa <jolsa@redhat.com>, Mike Galbraith <efault@gmx.de>,
Namhyung Kim <namhyung@kernel.org>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <peterz@infradead.org>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 10/10] perf tests: Use lower sample_freq in sw clock event period test
Date: Mon, 11 Nov 2013 13:45:12 -0700 [thread overview]
Message-ID: <528141D8.8090505@gmail.com> (raw)
In-Reply-To: <1384201353-23863-11-git-send-email-acme@infradead.org>
On 11/11/13, 1:22 PM, Arnaldo Carvalho de Melo wrote:
> @@ -58,8 +58,11 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
> }
>
> if (perf_evlist__open(evlist)) {
> + const char *knob = "/proc/sys/kernel/perf_event_max_sample_rate";
> +
> err = -errno;
> - pr_debug("Couldn't open evlist: %s\n", strerror(errno));
> + pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n",
> + strerror(errno), knob, (u64)attr.sample_freq);
> goto out_delete_maps;
> }
Jiri had a patch to drop the sample rate to max. Perhaps re-use that here?
next prev parent reply other threads:[~2013-11-11 20:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-11 20:22 [GIT PULL 00/10] perf/core improvements and fixes Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 01/10] perf ui tui progress: Don't force a refresh during progress update Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 02/10] perf evsel: Remove idx parm from constructor Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 03/10] perf record: Synthesize non-exec MMAP records when --data used Arnaldo Carvalho de Melo
2013-11-11 20:38 ` David Ahern
2013-11-11 21:02 ` Vince Weaver
2013-11-11 20:22 ` [PATCH 04/10] perf machine: Introduce synthesize_threads method out of open coded equivalent Arnaldo Carvalho de Melo
2013-11-11 20:40 ` David Ahern
2013-11-11 20:50 ` Ingo Molnar
2013-11-12 11:34 ` Arnaldo Carvalho de Melo
2013-11-12 12:44 ` Ingo Molnar
2013-11-12 21:57 ` [tip:perf/urgent] perf target: Shorten perf_target__ to target__ tip-bot for Arnaldo Carvalho de Melo
2014-01-12 18:33 ` [tip:perf/core] perf tools: Rename 'perf_record_opts' to ' record_opts tip-bot for Arnaldo Carvalho de Melo
2014-01-12 18:35 ` [tip:perf/core] perf report: Rename 'perf_report' to 'report' tip-bot for Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 05/10] perf machine: Simplify synthesize_threads method Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 06/10] perf tools: Prevent condition that all sort keys are elided Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 07/10] perf record: Use correct return type for write() Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 08/10] perf record: Move existing write_output into helper function Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 09/10] perf tests: Check return of perf_evlist__open sw clock event period test Arnaldo Carvalho de Melo
2013-11-11 20:22 ` [PATCH 10/10] perf tests: Use lower sample_freq in " Arnaldo Carvalho de Melo
2013-11-11 20:45 ` David Ahern [this message]
2013-11-12 7:07 ` Adrian Hunter
2013-11-12 8:40 ` Namhyung Kim
2013-11-12 11:59 ` Arnaldo Carvalho de Melo
2013-11-12 14:41 ` Arnaldo Carvalho de Melo
2013-11-15 6:03 ` Namhyung Kim
2013-11-12 21:56 ` [tip:perf/urgent] perf tests: Compensate lower sample freq with longer test loop tip-bot for Adrian Hunter
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