Hi all,
Currently, the split counters in THP statistics no longer include
PTE-mapped mTHP. Therefore, we propose introducing per-order mTHP split
counters to monitor the frequency of mTHP splits. This will help developers
better analyze and optimize system performance.
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
split
split_failed
split_deferred
---
Changes since v1 [1]
====================
- mm: add per-order mTHP split counters
- Update the changelog
- Drop '_page' from mTHP split counter names (per David and Ryan)
- Store the order of the folio in a variable and reuse it later
(per Bang)
- mm: add docs for per-order mTHP split counters
- Improve the doc suggested by Ryan
[1] https://lore.kernel.org/linux-mm/20240424135148.30422-1-ioworker0@xxxxxxxxx
Lance Yang (2):
mm: add per-order mTHP split counters
mm: add docs for per-order mTHP split counters
Documentation/admin-guide/mm/transhuge.rst | 16 ++++++++++++++++
include/linux/huge_mm.h | 3 +++
mm/huge_memory.c | 19 ++++++++++++++-----
3 files changed, 33 insertions(+), 5 deletions(-)
--
2.45.2
