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c660447eca
- Replace single-sample CPU calculation with two-sample delta method - Add 0.5 second sleep between CPU stat samples to calculate actual usage - Parse all 7 CPU time fields (user, nice, sys, idle, iowait, irq, softirq) from /proc/stat - Calculate CPU percentage as (1 - idle_diff/total_diff) * 100 - Add zero division protection when total_diff is 0 - Fix incorrect CPU usage reporting caused by using cumulative stat values