From: Kim Phillips <kim.phillips@amd.com>
To: Ian Rogers <irogers@google.com>
Cc: "Arnaldo Carvalho de Melo" <acme@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Arnaldo Carvalho de Melo" <acme@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
"Jiri Olsa" <jolsa@redhat.com>,
"Namhyung Kim" <namhyung@kernel.org>,
"Vijay Thakkar" <vijaythakkar@me.com>,
"Andi Kleen" <ak@linux.intel.com>,
"John Garry" <john.garry@huawei.com>,
"Kan Liang" <kan.liang@linux.intel.com>,
"Yunfeng Ye" <yeyunfeng@huawei.com>,
"Jin Yao" <yao.jin@linux.intel.com>,
"Martin Liška" <mliska@suse.cz>, "Borislav Petkov" <bp@suse.de>,
"Jon Grimm" <jon.grimm@amd.com>,
"Martin Jambor" <mjambor@suse.cz>,
"Michael Petlan" <mpetlan@redhat.com>,
"William Cohen" <wcohen@redhat.com>,
"Stephane Eranian" <eranian@google.com>,
linux-perf-users <linux-perf-users@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/4] perf vendor events amd: Add recommended events
Date: Thu, 3 Sep 2020 13:26:58 -0500 [thread overview]
Message-ID: <7a0b893d-8f65-6423-3818-5dafc880dca1@amd.com> (raw)
In-Reply-To: <CAP-5=fVwuKOACD++6UyBVW_fgbTXrOwuOJHSYenD87dwVJk0OA@mail.gmail.com>
On 9/3/20 1:19 AM, Ian Rogers wrote:
> On Tue, Sep 1, 2020 at 3:10 PM Kim Phillips <kim.phillips@amd.com> wrote:
>> The nps1_die_to_dram event may need perf stat's --metric-no-group
>> switch if the number of available data fabric counters is less
>> than the number it uses (8).
>
> These are really excellent additions! Does:
> "MetricConstraint": "NO_NMI_WATCHDOG"
> solve the grouping issue? Perhaps the MetricConstraint needs to be
> named more generically to cover this case as it seems sub-optimal to
> require the use of --metric-no-group.
That metric uses data fabric (DFPMC/amd_df) events, not Core PMC
events, which the watchdog uses, so NO_NMI_WATCHDOG wouldn't have
an effect. The event is defined as an approximation anyway.
I'll have to get back to you on the other items.
Thanks for your review!
Kim
WARNING: multiple messages have this Message-ID (diff)
From: Kim Phillips <kim.phillips@amd.com>
To: Ian Rogers <irogers@google.com>
Cc: "Arnaldo Carvalho de Melo" <acme@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Arnaldo Carvalho de Melo" <acme@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
"Jiri Olsa" <jolsa@redhat.com>,
"Namhyung Kim" <namhyung@kernel.org>,
"Vijay Thakkar" <vijaythakkar@me.com>,
"Andi Kleen" <ak@linux.intel.com>,
"John Garry" <john.garry@huawei.com>,
"Kan Liang" <kan.liang@linux.intel.com>,
"Yunfeng Ye" <yeyunfeng@huawei.com>,
"Jin Yao" <yao.jin@linux.intel.com>,
"Martin Liška" <mliska@suse.cz>, "Borislav Petkov" <bp@suse.de>,
"Jon Grimm" <jon.grimm@amd.com>,
"Martin Jambor" <mjambor@suse.cz>,
"Michael Petlan" <mpetlan@redhat.com>,
"William Cohen" <wcohen@redhat.com>
Subject: Re: [PATCH 3/4] perf vendor events amd: Add recommended events
Date: Thu, 3 Sep 2020 13:26:58 -0500 [thread overview]
Message-ID: <7a0b893d-8f65-6423-3818-5dafc880dca1@amd.com> (raw)
In-Reply-To: <CAP-5=fVwuKOACD++6UyBVW_fgbTXrOwuOJHSYenD87dwVJk0OA@mail.gmail.com>
On 9/3/20 1:19 AM, Ian Rogers wrote:
> On Tue, Sep 1, 2020 at 3:10 PM Kim Phillips <kim.phillips@amd.com> wrote:
>> The nps1_die_to_dram event may need perf stat's --metric-no-group
>> switch if the number of available data fabric counters is less
>> than the number it uses (8).
>
> These are really excellent additions! Does:
> "MetricConstraint": "NO_NMI_WATCHDOG"
> solve the grouping issue? Perhaps the MetricConstraint needs to be
> named more generically to cover this case as it seems sub-optimal to
> require the use of --metric-no-group.
That metric uses data fabric (DFPMC/amd_df) events, not Core PMC
events, which the watchdog uses, so NO_NMI_WATCHDOG wouldn't have
an effect. The event is defined as an approximation anyway.
I'll have to get back to you on the other items.
Thanks for your review!
Kim
next prev parent reply other threads:[~2020-09-03 18:27 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 22:09 [PATCH 1/4] perf vendor events amd: Add L2 Prefetch events for zen1 Kim Phillips
2020-09-01 22:09 ` Kim Phillips
2020-09-01 22:09 ` [PATCH 2/4] perf vendor events amd: Add ITLB Instruction Fetch Hits event " Kim Phillips
2020-09-01 22:09 ` Kim Phillips
2020-09-03 6:03 ` Ian Rogers
2020-09-03 6:03 ` Ian Rogers
2020-09-04 19:19 ` Arnaldo Carvalho de Melo
2020-09-04 19:19 ` Arnaldo Carvalho de Melo
2020-09-01 22:09 ` [PATCH 3/4] perf vendor events amd: Add recommended events Kim Phillips
2020-09-01 22:09 ` Kim Phillips
2020-09-03 6:19 ` Ian Rogers
2020-09-03 6:19 ` Ian Rogers
2020-09-03 18:26 ` Kim Phillips [this message]
2020-09-03 18:26 ` Kim Phillips
2020-09-04 5:48 ` Ian Rogers
2020-09-04 5:48 ` Ian Rogers
2020-09-04 19:28 ` Arnaldo Carvalho de Melo
2020-09-04 19:28 ` Arnaldo Carvalho de Melo
2020-09-01 22:09 ` [PATCH 4/4] perf vendor events amd: Enable Family 19h users by matching Zen2 events Kim Phillips
2020-09-01 22:09 ` Kim Phillips
2020-09-03 6:20 ` Ian Rogers
2020-09-03 6:20 ` Ian Rogers
2020-09-04 19:33 ` Arnaldo Carvalho de Melo
2020-09-04 19:33 ` Arnaldo Carvalho de Melo
2020-09-03 5:40 ` [PATCH 1/4] perf vendor events amd: Add L2 Prefetch events for zen1 Ian Rogers
2020-09-03 5:40 ` Ian Rogers
2020-09-04 19:18 ` Arnaldo Carvalho de Melo
2020-09-04 19:18 ` Arnaldo Carvalho de Melo
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