How does LINQ behave under high GC pressure scenarios?

LINQ can increase GC pressure due to allocations from iterators, closures, and deferred execution.

Each LINQ operator may create iterator objects and lambda closures. Under high-throughput systems, this leads to frequent allocations and Gen0 collections. Excessive chaining amplifies memory churn. Performance-critical systems often replace LINQ with manual loops or span-based processing to reduce allocations.