Regression Detected in Kepler or kube-apiserver CPU Utilization Performance

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Regression detected from the following reports:

Report: https://sustainable-computing-io.github.io/kepler-metal-ci/kepler-stress-test-metrics.html

Details:
Significant Regression Detected

The test results from the last two days, specifically on 2024-07-31, show a significant increase in both the Mean Kepler CPU Utilization and the Standard Deviation (Std Dev) percentages, indicating a performance regression.

Detailed Analysis:

• On 2024-07-31 at 18:18:00Z, the Mean Kepler CPU Utilization was recorded at 0.3280331034%, which is a substantial increase from the previous day's value of 0.0597766338% on 2024-07-30 at 18:15:51Z.
• Similarly, the Std Dev on 2024-07-31 at 18:18:00Z increased dramatically to 0.2598348881% from 0.0362022150% on the previous day.
• The subsequent test on the same day at 19:50:43Z also showed elevated levels of CPU utilization at 0.3038928317% and a Std Dev of 0.2290510851%.

Conclusion:
The data from the last two days clearly indicates a performance regression based on the defined criteria of significant increases in CPU utilization and Std Dev. This regression needs further investigation to identify the root cause and implement corrective measures to stabilize the performance of the Kepler system under test conditions.