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Date: Tue, 15 Nov 2022 14:28:27 +0800
From: Jing Zhang <renyu.zj@...ux.alibaba.com>
To: Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
linux-arm-kernel@...ts.infradead.org,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
John Garry <john.garry@...wei.com>,
Will Deacon <will@...nel.org>,
James Clark <james.clark@....com>,
Mike Leach <mike.leach@...aro.org>,
Leo Yan <leo.yan@...aro.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Andrew Kilroy <andrew.kilroy@....com>,
Shuai Xue <xueshuai@...ux.alibaba.com>,
Zhuo Song <zhuo.song@...ux.alibaba.com>
Subject: Re: [RFC PATCH v2 3/6] perf vendor events arm64: Add cache metrics
for neoverse-n2
在 2022/11/14 下午4:35, Xing Zhengjun 写道:
>
>
> On 11/14/2022 3:41 PM, Jing Zhang wrote:
>> Add cache related metrics.
>>
>> Signed-off-by: Jing Zhang <renyu.zj@...ux.alibaba.com>
>> ---
>> .../arch/arm64/arm/neoverse-n2/metrics.json | 77 ++++++++++++++++++++++
>> 1 file changed, 77 insertions(+)
>>
>> diff --git a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
>> index 324ca12..1690ef6 100644
>> --- a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
>> +++ b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
>> @@ -54,5 +54,82 @@
>> "BriefDescription": "The rate of DTLB Walks to the overall TLB lookups",
>> "MetricGroup": "TLB",
>> "MetricName": "dtlb_walk_rate"
>> + },
>> + {
>> + "MetricExpr": "L1I_CACHE_REFILL / INST_RETIRED * 1000",
>> + "PublicDescription": "The rate of L1 I-Cache misses per kilo instructions",
>> + "BriefDescription": "The rate of L1 I-Cache misses per kilo instructions",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l1i_cache_mpki"
>> + },
>> + {
>> + "MetricExpr": "L1I_CACHE_REFILL / L1I_CACHE",
>> + "PublicDescription": "The rate of L1 I-Cache misses to the overall L1 I-Cache",
>> + "BriefDescription": "The rate of L1 I-Cache misses to the overall L1 I-Cache",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l1i_cache_miss_rate"
>> + },
>> + {
>> + "MetricExpr": "L1D_CACHE_REFILL / INST_RETIRED * 1000",
>> + "PublicDescription": "The rate of L1 D-Cache misses per kilo instructions",
>> + "BriefDescription": "The rate of L1 D-Cache misses per kilo instructions",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l1d_cache_mpki"
>> + },
>> + {
>> + "MetricExpr": "L1D_CACHE_REFILL / L1D_CACHE",
>> + "PublicDescription": "The rate of L1 D-Cache misses to the overall L1 D-Cache",
>> + "BriefDescription": "The rate of L1 D-Cache misses to the overall L1 D-Cache",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l1d_cache_miss_rate"
>> + },
>> + {
>> + "MetricExpr": "L2D_CACHE_REFILL / INST_RETIRED * 1000",
>> + "PublicDescription": "The rate of L2 D-Cache misses per kilo instructions",
>> + "BriefDescription": "The rate of L2 D-Cache misses per kilo instructions",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l2d_cache_mpki"
>> + },
>> + {
>> + "MetricExpr": "L2D_CACHE_REFILL / L2D_CACHE",
>> + "PublicDescription": "The rate of L2 D-Cache misses to the overall L2 D-Cache",
>> + "BriefDescription": "The rate of L2 D-Cache misses to the overall L2 D-Cache",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l2d_cache_miss_rate"
>> + },
>> + {
>> + "MetricExpr": "L3D_CACHE_REFILL / INST_RETIRED * 1000",
>> + "PublicDescription": "The rate of L3 D-Cache misses per kilo instructions",
>> + "BriefDescription": "The rate of L3 D-Cache misses per kilo instructions",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l3d_cache_mpki"
>> + },
>> + {
>> + "MetricExpr": "L3D_CACHE_REFILL / L3D_CACHE",
>> + "PublicDescription": "The rate of L3 D-Cache misses to the overall L3 D-Cache",
>> + "BriefDescription": "The rate of L3 D-Cache misses to the overall L3 D-Cache",
>> + "MetricGroup": "Cache",
>> + "MetricName": "l3d_cache_miss_rate"
>> + },
>> + {
>> + "MetricExpr": "LL_CACHE_MISS_RD / INST_RETIRED * 1000",
>> + "PublicDescription": "The rate of LL Cache read misses per kilo instructions",
>> + "BriefDescription": "The rate of LL Cache read misses per kilo instructions",
>> + "MetricGroup": "Cache",
>> + "MetricName": "ll_cache_read_mpki"
>> + },
>> + {
>> + "MetricExpr": "LL_CACHE_MISS_RD / LL_CACHE_RD",
>> + "PublicDescription": "The rate of LL Cache read misses to the overall LL Cache read",
>> + "BriefDescription": "The rate of LL Cache read misses to the overall LL Cache read",
>> + "MetricGroup": "Cache",
>> + "MetricName": "ll_cache_read_miss_rate"
>> + },
>> + {
>> + "MetricExpr": "(LL_CACHE_RD - LL_CACHE_MISS_RD) / LL_CACHE_RD",
>> + "PublicDescription": "The rate of LL Cache read hit to the overall LL Cache read",
>> + "BriefDescription": "The rate of LL Cache read hit to the overall LL Cache read",
>> + "MetricGroup": "Cache",
>> + "MetricName": "ll_cache_read_hit_rate"
>> }
>> ]
>> \ No newline at end of file
>
> It is better to fix this by adding a newline at the end of the file.
>
OK, thanks for pointing it out.
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