Starting memory-efficient processing for date: 20250726 Memory limit: 2048M Phase 1: Sorting sightings by device... File redbull_combined_flat_20250726_00.json not found File redbull_combined_flat_20250726_01.json not found File redbull_combined_flat_20250726_02.json not found File redbull_combined_flat_20250726_03.json not found File redbull_combined_flat_20250726_04.json not found File redbull_combined_flat_20250726_05.json not found File redbull_combined_flat_20250726_06.json not found File redbull_combined_flat_20250726_07.json not found File redbull_combined_flat_20250726_08.json not found File redbull_combined_flat_20250726_09.json not found File redbull_combined_flat_20250726_10.json not found File redbull_combined_flat_20250726_11.json not found File redbull_combined_flat_20250726_12.json not found File redbull_combined_flat_20250726_13.json not found File redbull_combined_flat_20250726_14.json not found File redbull_combined_flat_20250726_15.json not found File redbull_combined_flat_20250726_16.json not found File redbull_combined_flat_20250726_17.json not found File redbull_combined_flat_20250726_18.json not found File redbull_combined_flat_20250726_19.json not found File redbull_combined_flat_20250726_20.json not found File redbull_combined_flat_20250726_21.json not found File redbull_combined_flat_20250726_22.json not found File redbull_combined_flat_20250726_23.json not found Phase 1 complete. Total records: 0 Memory usage: 2MB Phase 2: Processing device sessions... Phase 2 complete. Total sessions: 0 Session Types: Output saved to: /var/www/html/CrowdFlow/redbull/redbull_combineddwell_flat_20250726.json Final memory usage: 2MB