[v3,0/8] per lruvec lru_lock for memcg

Message

Alex Shi Nov. 16, 2019, 3:14 a.m. UTC

Hi all,

This patchset move lru_lock into lruvec, give a lru_lock for each of
lruvec, thus bring a lru_lock for each of memcg per node.

According to Daniel Jordan's suggestion, I run 64 'dd' with on 32
containers on my 2s* 8 core * HT box with the modefied case:
  https://git.kernel.org/pub/scm/linux/kernel/git/wfg/vm-scalability.git/tree/case-lru-file-readtwice

With this change above lru_lock censitive testing improved 17% with multiple
containers scenario. And no performance lose w/o mem_cgroup.

Thanks Hugh Dickins and Konstantin Khlebnikov, they both bring the same idea
7 years ago. Now I believe considering my testing result, and google internal
using fact. This feather is clearly benefit multi-container user.

So I like to introduce it here.

v3: rebase on linux-next, and fold the relock fix patch into introduceing patch

v2: bypass a performance regression bug and fix some function issues

v1: initial version, aim testing show 5% performance incrase

Alex Shi (7):
  mm/lru: add per lruvec lock for memcg
  mm/lruvec: add irqsave flags into lruvec struct
  mm/lru: replace pgdat lru_lock with lruvec lock
  mm/lru: only change the lru_lock iff page's lruvec is different
  mm/pgdat: remove pgdat lru_lock
  mm/lru: likely enhancement
  mm/lru: revise the comments of lru_lock

 Documentation/admin-guide/cgroup-v1/memcg_test.rst | 15 +----
 Documentation/admin-guide/cgroup-v1/memory.rst     |  6 +-
 Documentation/trace/events-kmem.rst                |  2 +-
 Documentation/vm/unevictable-lru.rst               | 22 +++----
 include/linux/memcontrol.h                         | 67 +++++++++++++++++++
 include/linux/mm_types.h                           |  2 +-
 include/linux/mmzone.h                             |  7 +-
 mm/compaction.c                                    | 62 +++++++++++------
 mm/filemap.c                                       |  4 +-
 mm/huge_memory.c                                   | 16 ++---
 mm/memcontrol.c                                    | 64 ++++++++++++++----
 mm/mlock.c                                         | 27 ++++----
 mm/mmzone.c                                        |  1 +
 mm/page_alloc.c                                    |  1 -
 mm/page_idle.c                                     |  5 +-
 mm/rmap.c                                          |  2 +-
 mm/swap.c                                          | 77 +++++++++-------------
 mm/vmscan.c                                        | 74 +++++++++++----------
 18 files changed, 277 insertions(+), 177 deletions(-)