Performance Regression or Improvement: gbk_python_batch_load_test_2gb_of_10B_records:runtime

[github-actions]

Performance change found in the
test: gbk_python_batch_load_test_2gb_of_10B_records for the metric: runtime.

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Triage performance alert issues section of the README.

Test description: GroupByKey Python Load test - 2GB of 10B records
python | GBK | Small records (10B)
Test Dashboard - http://metrics.beam.apache.org/d/UYZ-oJ3Zk/gbk-load-tests?orgId=1&var-processingType=batch&var-sdk=python&from=now-90d&to=now&viewPanel=2
Test link - https://github.com/apache/beam/blob/5e38decf9e723a385057131b01bbd33d8c60bda3/.test-infra/jenkins/job_LoadTests_GBK_Python.groovy#L36C25-L36C72

timestamp: Thu Jul 23 16:41:29 2026, metric_value: 518.00
timestamp: Wed Jul 22 17:02:16 2026, metric_value: 480.00
timestamp: Tue Jul 21 16:37:10 2026, metric_value: 510.00
timestamp: Mon Jul 20 16:39:48 2026, metric_value: 504.00 <---- Anomaly
timestamp: Sun Jul 19 16:34:27 2026, metric_value: 709.00
timestamp: Sat Jul 18 16:33:29 2026, metric_value: 699.00
timestamp: Fri Jul 17 16:38:44 2026, metric_value: 486.00
timestamp: Thu Jul 16 16:37:24 2026, metric_value: 641.00
timestamp: Wed Jul 15 16:38:44 2026, metric_value: 665.00
timestamp: Tue Jul 14 16:38:59 2026, metric_value: 491.00
timestamp: Mon Jul 13 17:08:14 2026, metric_value: 674.00
timestamp: Sun Jul 12 16:35:00 2026, metric_value: 714.00
timestamp: Sat Jul 11 16:33:09 2026, metric_value: 693.00
timestamp: Fri Jul 10 16:55:50 2026, metric_value: 608.00