Why does LINQ become a bottleneck in high-throughput telemetry systems?

LINQ introduces allocation and iteration overhead that is unsuitable for high-frequency telemetry ingestion.

Telemetry systems process millions of events per second. LINQ introduces iterator chains, lambda calls, and potential heap allocations, which increase latency and garbage collection pressure. In such systems, even microsecond overhead matters, making LINQ less suitable compared to manual buffer-based processing pipelines.