Linux 6.17 Memory Management Optimizations, DAMON_STAT & Other Improvements
All of the memory management "MM" changes were merged this week for the ongoing Linux 6.17 merge window.
Among the memory management feature highlights for Linux 6.17 include:
- DAMON_STAT is merged as a new DAMON offering for simple and practical access monitoring designed for simpler setup and use within production environments.
- Optimizing mremap() for large folios yielded a 37% reduction in execution time for a memset+mremap+munmap benchmark.
- A new standalone notifier for NUMA node memory state changes.
- Introducing the ability to provide per-node proactive memory reclaim as an alternative to the memcg-based reclaim.
- Per-VMA locks for /proc/pid/maps reads to address large contention issues while in some instances reducing latency by more than half.
- Optimizing mprotect() for large folios can provide greater than 3x speed-ups to mprotect() when using large folios.
More details on the MM changes for Linux 6.17 via Andrew Morton's pull request.
Among the memory management feature highlights for Linux 6.17 include:
- DAMON_STAT is merged as a new DAMON offering for simple and practical access monitoring designed for simpler setup and use within production environments.
- Optimizing mremap() for large folios yielded a 37% reduction in execution time for a memset+mremap+munmap benchmark.
- A new standalone notifier for NUMA node memory state changes.
- Introducing the ability to provide per-node proactive memory reclaim as an alternative to the memcg-based reclaim.
- Per-VMA locks for /proc/pid/maps reads to address large contention issues while in some instances reducing latency by more than half.
- Optimizing mprotect() for large folios can provide greater than 3x speed-ups to mprotect() when using large folios.
More details on the MM changes for Linux 6.17 via Andrew Morton's pull request.