https://nalar.dev/tags/resource-pressure/ Recent content in Resource Pressure on Nalar Hugo en-us Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/linux-psi-separates-partial-and-total-resource-stalls/ Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/linux-psi-separates-partial-and-total-resource-stalls/ <p>A Linux host can report modest CPU utilization while runnable work is delayed, or ample memory capacity while tasks repeatedly stall in reclaim. Utilization counters describe resource activity; pressure stall information records time in which work cannot make progress because a resource is contended.</p> <p>PSI exposes that lost execution opportunity through CPU, memory, and I/O pressure files. Its central distinction is between a stall affecting at least one task and a stall that leaves every non-idle task unable to make progress.</p>