From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>, lkml <linux-kernel@vger.kernel.org>,
David Ahern <dsahern@gmail.com>, Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 01/23] perf record: Add --all-user/--all-kernel options
Date: Wed, 17 Feb 2016 11:26:16 -0300 [thread overview]
Message-ID: <20160217142616.GB15386@kernel.org> (raw)
In-Reply-To: <20160217031037.GA11236@tassilo.jf.intel.com>
Em Tue, Feb 16, 2016 at 07:10:37PM -0800, Andi Kleen escreveu:
> > Need to investigate why there are kernel samples when --all-user is used and
> > the other way around as well.
> This is a known issue due to skid. PEBS usually avoids it.
Right, thanks for pointing this out, we have to detect that :p is not
being used and warn the user about this possibility, i.e. user asks for
just kernel samples, tool finds user samples, tell that using :p+ may
help.
Now, using plain:
# perf record --all-user -a sleep 2
will make it use the default which is 'cycles' with the highest
precision available on the machine, and that leaves just a few samples
that supposedly have the MISC_KERNEL bit set in the perf_event_attr
header, those are not mapping to any mmap area known to the tool, I'm
investigating what this is.
I'll apply the patch as-is, we'll check later OPT_ magic to tell that
those options are mutually exclusive.
- Arnaldo
next prev parent reply other threads:[~2016-02-17 14:26 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-15 8:34 [PATCH 00/23] perf tools: Several memory events updates Jiri Olsa
2016-02-15 8:34 ` [PATCH 01/23] perf record: Add --all-user/--all-kernel options Jiri Olsa
2016-02-16 16:56 ` Arnaldo Carvalho de Melo
2016-02-17 3:10 ` Andi Kleen
2016-02-17 14:26 ` Arnaldo Carvalho de Melo [this message]
2016-02-17 15:31 ` Andi Kleen
2016-02-17 14:39 ` Jiri Olsa
2016-02-17 14:55 ` Arnaldo Carvalho de Melo
2016-02-20 11:34 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 02/23] perf tools: Make cl_address global Jiri Olsa
2016-02-25 5:42 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 03/23] perf tools: Introduce cl_offset function Jiri Olsa
2016-02-25 5:42 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 04/23] perf tools: Add monitored events array Jiri Olsa
2016-02-23 15:10 ` Arnaldo Carvalho de Melo
2016-02-23 15:18 ` Jiri Olsa
2016-02-25 5:42 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 05/23] perf mem: Add -e record option Jiri Olsa
2016-02-25 5:43 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 06/23] perf mem: Check for memory events support Jiri Olsa
2016-02-23 15:18 ` Arnaldo Carvalho de Melo
2016-02-23 15:24 ` Arnaldo Carvalho de Melo
2016-02-23 15:42 ` Jiri Olsa
2016-02-23 15:29 ` Jiri Olsa
2016-02-23 15:34 ` Arnaldo Carvalho de Melo
2016-02-15 8:34 ` [PATCH 07/23] perf mem: Introduce perf_mem_events__name function Jiri Olsa
2016-02-15 8:34 ` [PATCH 08/23] perf mem: Add -l/--ldlat option Jiri Olsa
2016-02-15 8:34 ` [PATCH 09/23] perf mem: Add -u/-k options Jiri Olsa
2016-02-15 8:34 ` [PATCH 10/23] perf x86 intel: Add DATALA events into sysfs Jiri Olsa
2016-02-15 8:34 ` [PATCH 11/23] perf mem: Add Intel DATALA memory events Jiri Olsa
2016-02-15 8:34 ` [PATCH 12/23] perf tools: Use ARRAY_SIZE in mem sort display functions Jiri Olsa
2016-02-25 5:43 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 13/23] perf tools: Introduce perf_mem__tlb_scnprintf function Jiri Olsa
2016-02-15 8:34 ` [PATCH 14/23] perf tools: Introduce perf_mem__lvl_scnprintf function Jiri Olsa
2016-02-15 8:34 ` [PATCH 15/23] perf tools: Introduce perf_mem__snp_scnprintf function Jiri Olsa
2016-02-15 8:34 ` [PATCH 16/23] perf tools: Introduce perf_mem__lck_scnprintf function Jiri Olsa
2016-02-15 8:34 ` [PATCH 17/23] perf tools: Change perf_mem__tlb_scnprintf to return nb of displayed bytes Jiri Olsa
2016-02-15 8:34 ` [PATCH 18/23] perf tools: Change perf_mem__lvl_scnprintf " Jiri Olsa
2016-02-15 8:34 ` [PATCH 19/23] perf tools: Change perf_mem__snp_scnprintf " Jiri Olsa
2016-02-15 8:34 ` [PATCH 20/23] perf tools: Change perf_mem__lck_scnprintf " Jiri Olsa
2016-02-15 8:34 ` [PATCH 21/23] perf script: Add data_src and weight column definitions Jiri Olsa
2016-02-25 5:43 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 22/23] perf script: Display addr/data_src/weight columns for raw events Jiri Olsa
2016-02-25 5:43 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-02-15 8:34 ` [PATCH 23/23] perf script: Display data_src values Jiri Olsa
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