Re: [RFC PATCH v2 3/6] perf vendor events arm64: Add cache metrics for neoverse-n2

Xing Zhengjun
2022-11-14T08:36:08Z

On 11/14/2022 3:41 PM, Jing Zhang wrote:
> Add cache related metrics.
>
> Signed-off-by: Jing Zhang <renyu.zj@linux.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.

--
Zhengjun Xing