There is a fast path and slow path to reclaiming cached pages. There are ways to measure the impact using ebpf probes. If you are interested in going deeper I

There is a fast path and slow path to reclaiming cached pages. There are ways to measure the impact using ebpf probes. If you are interested in going deeper I recommend looking at the memory section of this book: https://www.brendangregg.com/blog/2020-07-15/systems-performance-2nd-edition.html https://www.brendangregg.com/blog/2020-07-15/systems-perform...