[jira] [Created] (YUNIKORN-2930) Enhance Metrics for Scheduling Cycle Latency

["Mit Desai (Jira)" <ji...@apache.org>]

Mit Desai created YUNIKORN-2930:
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             Summary: Enhance Metrics for Scheduling Cycle Latency
                 Key: YUNIKORN-2930
                 URL: https://issues.apache.org/jira/browse/YUNIKORN-2930
             Project: Apache YuniKorn
          Issue Type: Improvement
          Components: core - scheduler
            Reporter: Mit Desai
            Assignee: Mit Desai


Update scheduler metrics to provide a comprehensive view of scheduling cycle latency, including cycles where no pods were scheduled and more granular details on node evaluation times.

The current metrics for the scheduler do not provide a complete picture. Specifically:
 * {*}Scheduling Latency{*}: Only shows the latency for pods that were scheduled. If no pod was scheduled in a cycle, the latency metric is not emitted.
 * {*}tryNodeLatency{*}: Shows the time taken to evaluate a single node, but does not capture the total time taken to find a node for a pod.

To improve the metrics we should add additional metrics:
 # {*}Scheduling Cycle Metric{*}: Emit a metric for each scheduling cycle, regardless of whether a pod was scheduled. This metric will show the total time taken for each scheduling cycle.
 # {*}Node Evaluation Metric{*}: Add a new metric that shows the total time taken to find a node for a given pod. For instance, if a pod was scheduled after evaluating five nodes, this new metric will be the sum of the times for those five nodes.



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