6 ms·
Page cache reclamation is mostly single threaded. It's much simpler, than you can create in a user space, it has no weight for specific pages etc. Traveling in
by 0xdeafbeef 1y ago
Page cache reclamation is mostly single threaded. It's much simpler, than you can create in a user space, it has no weight for specific pages etc.
Traveling into kernel flushes branch predictor caches, tlb. So it's not free at all.