Prepare metrics for GNR on Cloud VMs

[harp-intel]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for GraniteRapids (gnr) on cloud VMs by providing new “nofixedtma” metric and event definitions and updating the loader logic to pick these files when fixed TMA counters aren’t available.

• Introduce gnr_nofixedtma.json with 478 new metric expressions for GraniteRapids without fixed TMA.
• Introduce gnr_nofixedtma.txt with 214 new event definitions for GraniteRapids.
• Extend LoadMetricDefinitions and LoadEventGroups to recognize uarch == "gnr" and select the _nofixedtma variants.
• Refactor PEBS event filtering in isCollectableEvent to loop on substrings rather than exact matches.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
cmd/metrics/resources/metrics/x86_64/GenuineIntel/gnr_nofixedtma.json	New metrics definitions for GraniteRapids when fixed TMA is unsupported
cmd/metrics/resources/events/x86_64/GenuineIntel/gnr_nofixedtma.txt	New event definitions for GraniteRapids when fixed TMA is unsupported
cmd/metrics/metric_defs.go	Include gnr in the alternate‐metric selection for no‐fixed‐TMA path
cmd/metrics/event_defs.go	Include gnr in the alternate‐event selection and refactor PEBS filtering

Comments suppressed due to low confidence (4)

cmd/metrics/resources/metrics/x86_64/GenuineIntel/gnr_nofixedtma.json:239

• [nitpick] The metric name uses underscores and camel-case inconsistently compared to other metrics (e.g., "memory bandwidth read (MB/sec)"). Consider renaming to "IO bandwidth disk or network writes (MB/sec)" for consistency.

        "name": "IO_bandwidth_disk_or_network_writes (MB/sec)",

cmd/metrics/resources/metrics/x86_64/GenuineIntel/gnr_nofixedtma.json:243

• [nitpick] Similarly, adjust this to "IO bandwidth disk or network reads (MB/sec)" to match the naming style of other metrics.

        "name": "IO_bandwidth_disk_or_network_reads (MB/sec)",

cmd/metrics/metric_defs.go:46

• Add a unit test to verify that when uarch == "gnr" and SupportsFixedTMA is false, the loader correctly selects gnr_nofixedtma.json.

		if (uarch == "icx" || uarch == "spr" || uarch == "emr" || uarch == "gnr") && !metadata.SupportsFixedTMA {

cmd/metrics/event_defs.go:47

• Add a unit test to ensure that LoadEventGroups picks gnr_nofixedtma.txt for uarch == "gnr" when fixed TMA is unsupported.

			alternate = "_nofixedtma"