lkml.org 
[lkml]   [2022]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[RFC PATCH V4 0/1] mm: add last level page table numa info to /proc/pid/numa_pgtable
Date
In many data center servers, the shared memory architectures is
Non-Uniform Memory Access (NUMA), remote numa node data access
often brings a high latency problem, but what we are easy to ignore
is that the page table remote numa access, It can also leads to a
performance degradation.

So there add a new interface in /proc, This will help developers to
get more info about performance issues if they are caused by cross-NUMA.

V4 -> V3
1, Add some detects and spinlock when operating PMD page as Baolin Wang advised.

V2 -> V3
1, Fix compile warning bug.

V1 -> V2
1, As Matthew Wilcox advise, Simplify the code.
2, Do some codes format fix.

V3: https://lore.kernel.org/linux-mm/20220801032704.64356-1-xhao@linux.alibaba.com/
V2: https://lore.kernel.org/linux-mm/20220731155223.60238-1-xhao@linux.alibaba.com/
V1: https://lore.kernel.org/linux-mm/YuVqdcY8Ibib2LJa@casper.infradead.org/T/


Xin Hao (1):
mm: add last level page table numa info to /proc/pid/numa_pgtable

fs/proc/base.c | 2 ++
fs/proc/internal.h | 1 +
fs/proc/task_mmu.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 90 insertions(+)

--
2.31.0

\
 
 \ /
  Last update: 2022-08-01 14:39    [W:0.054 / U:0.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site