[3/6] tools/perf/json: Add cache metrics for s390 z15
Commit Message
Add metrics for s390 z15
- Percentage sourced from Level 2 cache
- Percentage sourced from Level 3 on same chip cache
- Percentage sourced from Level 4 Local cache on same book
- Percentage sourced from Level 4 Remote cache on different book
- Percentage sourced from memory
For details about the formulas see this documentation:
https://www.ibm.com/support/pages/system/files/inline-files/CPU%20MF%20Formulas%20including%20z16%20-%20May%202022_1.pdf
Outpuf after:
# ./perf stat -M l4rp -- find /
.... find output deleted
Performance counter stats for 'find /':
5 L1I_OFFDRAWER_L4_SOURCED_WRITES # 0.01 l4rp
187 L1D_OFFDRAWER_L4_SOURCED_WRITES
0 L1I_OFFDRAWER_L3_SOURCED_WRITES
231,333,165 L1I_DIR_WRITES
3,303 L1D_OFFDRAWER_L3_SOURCED_WRITES
47,461 L1D_OFFDRAWER_L3_SOURCED_WRITES_IV
0 L1I_OFFDRAWER_L3_SOURCED_WRITES_IV
126,706,244 L1D_DIR_WRITES
27.870355461 seconds time elapsed
0.521562000 seconds user
12.494503000 seconds sys
#
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-By: Sumanth Korikkar <sumanthk@linux.ibm.com>
---
.../arch/s390/cf_z15/transaction.json | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
Comments
On Mon, Mar 13, 2023 at 1:31 AM Thomas Richter <tmricht@linux.ibm.com> wrote:
>
> Add metrics for s390 z15
> - Percentage sourced from Level 2 cache
> - Percentage sourced from Level 3 on same chip cache
> - Percentage sourced from Level 4 Local cache on same book
> - Percentage sourced from Level 4 Remote cache on different book
> - Percentage sourced from memory
>
> For details about the formulas see this documentation:
> https://www.ibm.com/support/pages/system/files/inline-files/CPU%20MF%20Formulas%20including%20z16%20-%20May%202022_1.pdf
>
> Outpuf after:
> # ./perf stat -M l4rp -- find /
> .... find output deleted
>
> Performance counter stats for 'find /':
>
> 5 L1I_OFFDRAWER_L4_SOURCED_WRITES # 0.01 l4rp
> 187 L1D_OFFDRAWER_L4_SOURCED_WRITES
> 0 L1I_OFFDRAWER_L3_SOURCED_WRITES
> 231,333,165 L1I_DIR_WRITES
> 3,303 L1D_OFFDRAWER_L3_SOURCED_WRITES
> 47,461 L1D_OFFDRAWER_L3_SOURCED_WRITES_IV
> 0 L1I_OFFDRAWER_L3_SOURCED_WRITES_IV
> 126,706,244 L1D_DIR_WRITES
>
> 27.870355461 seconds time elapsed
>
> 0.521562000 seconds user
> 12.494503000 seconds sys
> #
>
> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
> Acked-By: Sumanth Korikkar <sumanthk@linux.ibm.com>
> ---
> .../arch/s390/cf_z15/transaction.json | 25 +++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/tools/perf/pmu-events/arch/s390/cf_z15/transaction.json b/tools/perf/pmu-events/arch/s390/cf_z15/transaction.json
> index 86bf83b4504e..cca237bdb7ba 100644
> --- a/tools/perf/pmu-events/arch/s390/cf_z15/transaction.json
> +++ b/tools/perf/pmu-events/arch/s390/cf_z15/transaction.json
> @@ -18,5 +18,30 @@
> "BriefDescription": "Level One Miss per 100 Instructions",
> "MetricName": "l1mp",
> "MetricExpr": "((L1I_DIR_WRITES + L1D_DIR_WRITES) / INSTRUCTIONS) * 100"
> + },
> + {
> + "BriefDescription": "Percentage sourced from Level 2 cache",
> + "MetricName": "l2p",
> + "MetricExpr": "((L1D_L2D_SOURCED_WRITES + L1I_L2I_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
> + },
> + {
> + "BriefDescription": "Percentage sourced from Level 3 on same chip cache",
> + "MetricName": "l3p",
> + "MetricExpr": "((L1D_ONCHIP_L3_SOURCED_WRITES + L1D_ONCHIP_L3_SOURCED_WRITES_IV + L1I_ONCHIP_L3_SOURCED_WRITES + L1I_ONCHIP_L3_SOURCED_WRITES_IV) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
> + },
> + {
> + "BriefDescription": "Percentage sourced from Level 4 Local cache on same book",
> + "MetricName": "l4lp",
> + "MetricExpr": "((L1D_ONCLUSTER_L3_SOURCED_WRITES + L1D_ONCLUSTER_L3_SOURCED_WRITES_IV + L1D_ONDRAWER_L4_SOURCED_WRITES + L1I_ONCLUSTER_L3_SOURCED_WRITES + L1I_ONCLUSTER_L3_SOURCED_WRITES_IV + L1I_ONDRAWER_L4_SOURCED_WRITES + L1D_OFFCLUSTER_L3_SOURCED_WRITES + L1D_OFFCLUSTER_L3_SOURCED_WRITES_IV + L1D_ONCHIP_L3_SOURCED_WRITES_RO + L1I_OFFCLUSTER_L3_SOURCED_WRITES + L1I_OFFCLUSTER_L3_SOURCED_WRITES_IV) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
It is more typical for percentages to change the ScaleUnit to "100%"
and not to do the "* 100". Otherwise these look good.
Thanks,
Ian
> + },
> + {
> + "BriefDescription": "Percentage sourced from Level 4 Remote cache on different book",
> + "MetricName": "l4rp",
> + "MetricExpr": "((L1D_OFFDRAWER_L3_SOURCED_WRITES + L1D_OFFDRAWER_L3_SOURCED_WRITES_IV + L1D_OFFDRAWER_L4_SOURCED_WRITES + L1I_OFFDRAWER_L3_SOURCED_WRITES + L1I_OFFDRAWER_L3_SOURCED_WRITES_IV + L1I_OFFDRAWER_L4_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
> + },
> + {
> + "BriefDescription": "Percentage sourced from memory",
> + "MetricName": "memp",
> + "MetricExpr": "((L1D_ONCHIP_MEMORY_SOURCED_WRITES + L1D_ONCLUSTER_MEMORY_SOURCED_WRITES + L1D_OFFCLUSTER_MEMORY_SOURCED_WRITES + L1D_OFFDRAWER_MEMORY_SOURCED_WRITES + L1I_ONCHIP_MEMORY_SOURCED_WRITES + L1I_ONCLUSTER_MEMORY_SOURCED_WRITES + L1I_OFFCLUSTER_MEMORY_SOURCED_WRITES + L1I_OFFDRAWER_MEMORY_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
> }
> ]
> --
> 2.39.1
>
@@ -18,5 +18,30 @@
"BriefDescription": "Level One Miss per 100 Instructions",
"MetricName": "l1mp",
"MetricExpr": "((L1I_DIR_WRITES + L1D_DIR_WRITES) / INSTRUCTIONS) * 100"
+ },
+ {
+ "BriefDescription": "Percentage sourced from Level 2 cache",
+ "MetricName": "l2p",
+ "MetricExpr": "((L1D_L2D_SOURCED_WRITES + L1I_L2I_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+ },
+ {
+ "BriefDescription": "Percentage sourced from Level 3 on same chip cache",
+ "MetricName": "l3p",
+ "MetricExpr": "((L1D_ONCHIP_L3_SOURCED_WRITES + L1D_ONCHIP_L3_SOURCED_WRITES_IV + L1I_ONCHIP_L3_SOURCED_WRITES + L1I_ONCHIP_L3_SOURCED_WRITES_IV) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+ },
+ {
+ "BriefDescription": "Percentage sourced from Level 4 Local cache on same book",
+ "MetricName": "l4lp",
+ "MetricExpr": "((L1D_ONCLUSTER_L3_SOURCED_WRITES + L1D_ONCLUSTER_L3_SOURCED_WRITES_IV + L1D_ONDRAWER_L4_SOURCED_WRITES + L1I_ONCLUSTER_L3_SOURCED_WRITES + L1I_ONCLUSTER_L3_SOURCED_WRITES_IV + L1I_ONDRAWER_L4_SOURCED_WRITES + L1D_OFFCLUSTER_L3_SOURCED_WRITES + L1D_OFFCLUSTER_L3_SOURCED_WRITES_IV + L1D_ONCHIP_L3_SOURCED_WRITES_RO + L1I_OFFCLUSTER_L3_SOURCED_WRITES + L1I_OFFCLUSTER_L3_SOURCED_WRITES_IV) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+ },
+ {
+ "BriefDescription": "Percentage sourced from Level 4 Remote cache on different book",
+ "MetricName": "l4rp",
+ "MetricExpr": "((L1D_OFFDRAWER_L3_SOURCED_WRITES + L1D_OFFDRAWER_L3_SOURCED_WRITES_IV + L1D_OFFDRAWER_L4_SOURCED_WRITES + L1I_OFFDRAWER_L3_SOURCED_WRITES + L1I_OFFDRAWER_L3_SOURCED_WRITES_IV + L1I_OFFDRAWER_L4_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
+ },
+ {
+ "BriefDescription": "Percentage sourced from memory",
+ "MetricName": "memp",
+ "MetricExpr": "((L1D_ONCHIP_MEMORY_SOURCED_WRITES + L1D_ONCLUSTER_MEMORY_SOURCED_WRITES + L1D_OFFCLUSTER_MEMORY_SOURCED_WRITES + L1D_OFFDRAWER_MEMORY_SOURCED_WRITES + L1I_ONCHIP_MEMORY_SOURCED_WRITES + L1I_ONCLUSTER_MEMORY_SOURCED_WRITES + L1I_OFFCLUSTER_MEMORY_SOURCED_WRITES + L1I_OFFDRAWER_MEMORY_SOURCED_WRITES) / (L1I_DIR_WRITES + L1D_DIR_WRITES)) * 100"
}
]