A 40ms Go garbage collector pause caused by swap

This article shows that enabling swap in memory-constrained environments can turn Go’s garbage collector from microsecond-scale pauses into stop-the-world delays of tens of milliseconds when GC metadata is swapped out. For CIOs and technology leaders, the business impact is clear: a seemingly routine infrastructure setting can create outsized latency spikes, reduce throughput, and introduce availability risk across otherwise healthy services.