The per-CPU vmstat worker is a problem on -RT workloads (because ideally the CPU is entirely reserved for the -RT app, without interference). The worker transfers accumulated per-CPU vmstat counters to global counters. To resolve the problem, create two tunables: * Userspace configurable per-CPU vmstat threshold: by default the VM code calculates the size of the per-CPU vmstat arrays. This tunable allows userspace to configure the values. * Userspace configurable per-CPU vmstat worker: allow disabling the per-CPU vmstat worker. v2: - Improve documentation (Rik/Luiz). - Split patch in two (Luiz). - Fix comparison to include equal, in the helpers for stats accounting. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
