Performed full review of b51da91...8cba71d

Analysis

1. Incorrect CPU Percentage Calculation: The CalculateCPUPercent function in server/lib/benchmarks/cpu_linux.go uses a flawed calculation method that will produce entirely inaccurate CPU metrics, invalidating benchmark results.

2. Misleading Hardcoded Fallback Values: When WebRTC stats collection fails, the system returns hardcoded estimates (28.0 FPS, 35ms latency) instead of errors, masking real failures and potentially providing false confidence in results.

3. Race Condition in WebSocket Communication: The code uses non-null assertions when sending WebSocket data which could fail if the connection closes between the connection check and the send operation.

4. Inconsistent API Design and Silent Error Handling: Several functions ignore errors from stat collection and have confusing signatures (like accepting duration parameters that are ignored).

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