From: John Garry <john.garry@huawei.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
Ian Rogers <irogers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>,
"Namhyung Kim" <namhyung@kernel.org>,
Jin Yao <yao.jin@linux.intel.com>,
"Paul A . Clarke" <pc@us.ibm.com>,
<linux-perf-users@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <eranian@google.com>
Subject: Re: [PATCH v3 1/2] perf test: Workload test of metric and metricgroups
Date: Wed, 12 Jan 2022 12:24:29 +0000 [thread overview]
Message-ID: <158a1451-9d69-d67d-3fad-9e947112f9e6@huawei.com> (raw)
In-Reply-To: <YU4iVcVc6uYAWft4@kernel.org>
On 24/09/2021 20:09, Arnaldo Carvalho de Melo wrote:
> Em Fri, Sep 17, 2021 at 11:42:39AM -0700, Ian Rogers escreveu:
>> Test every metric and metricgroup with 'true' as a workload. For
>> metrics, check that we see the metric printed or get unsupported. If the
>> 'true' workload executes too quickly retry with 'perf bench internals
>> synthesize'.
>>
>> v3. Fix test condition (thanks to Paul A. Clarke<pc@us.ibm.com>). Add a
>> fallback case of a larger workload so that we don't ignore "<not
>> counted>".
>> v2. Switched the workload to something faster.
Hi Ian,
I just noticed that this test fails on my broadwell machine.
I am using acme perf/core @ 09dd3c22daaf
metricgroup Memory_Bw fails, and it seems because of the "true" argument
to "perf stat" (or any argument, like sleep 1):
john@localhost:~/kernel-dev9/tools/perf> sudo ./perf stat -M Memory_BW
^C
Performance counter stats for 'system wide':
2,184 arb/event=0x84,umask=0x1/ # 0.26
DRAM_BW_Use
2,954,938 arb/event=0x81,umask=0x1/
736,368,852 ns duration_time
58,202,980 l1d_pend_miss.pending_cycles # 2.34 MLP
(80.11%)
136,293,194 l1d_pend_miss.pending
(19.89%)
736,368,852 ns duration_time
1,065,656 longest_lat_cache.miss # 0.09
L3_Cache_Fill_BW (39.71%)
736,368,852 ns duration_time
5,365,477 l2_lines_in.all # 0.47
L2_Cache_Fill_BW (59.80%)
736,368,852 ns duration_time
3,557,362 l1d.replacement # 0.31
L1D_Cache_Fill_BW (79.90%)
736,368,852 ns duration_time
0.736368852 seconds time elapsed
john@localhost:~/kernel-dev9/tools/perf> sudo ./perf stat -M Memory_BW true
Error:
The sys_perf_event_open() syscall returned with 22 (Invalid argument)
for event (arb/event=0x84,umask=0x1/).
/bin/dmesg | grep -i perf may provide additional information.
john@localhost:~/kernel-dev9/tools/perf>
Anyone any idea on this before I start digging?
Thanks,
John
next prev parent reply other threads:[~2022-01-12 12:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-17 18:42 [PATCH v3 1/2] perf test: Workload test of metric and metricgroups Ian Rogers
2021-09-17 18:42 ` [PATCH v3 2/2] perf test: Workload test of all PMUs Ian Rogers
2021-09-24 19:09 ` [PATCH v3 1/2] perf test: Workload test of metric and metricgroups Arnaldo Carvalho de Melo
2021-09-24 19:39 ` John Garry
2021-09-28 18:55 ` Arnaldo Carvalho de Melo
2022-01-12 12:24 ` John Garry [this message]
2022-01-12 13:34 ` Arnaldo Carvalho de Melo
2022-01-12 17:32 ` John Garry
2022-01-12 17:59 ` Arnaldo Carvalho de Melo
2022-01-12 18:00 ` John Garry
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