proc buddyinfo

最新推荐文章于 2025-06-03 14:57:17 发布

junior1108

最新推荐文章于 2025-06-03 14:57:17 发布

阅读量735

点赞数

文章标签： numbers patch idea

本文介绍了一项由Martin Bligh提出的补丁，该补丁导出了Buddy内存分配器的状态信息。这些信息展示了不同内存区域中可用页面的数量，有助于评估内存碎片情况并为安全分配提供依据。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

http://lwn.net/Articles/7868/

The following patch originally by Martin Bligh exports some 
information about the buddy allocator.

Each column of numbers represents the number of pages of that order 
which are available.  In this case, there are 5 chunks of 
2^2*PAGE_SIZE available in ZONE_DMA, and 101 chunks of 2^4*PAGE_SIZE 
availble in ZONE_NORMAL, etc...  This information can give you a good 
idea about how fragmented memory is and give you a clue as to how big 
of an area you can safely allocate.

Node 0, zone      DMA      0      4      5      4      4      3 ...
Node 0, zone   Normal      1      0      0      1    101      8 ...
Node 0, zone  HighMem      2      0      0      1      1      0 ...

-- 
Dave Hansen
haveblue@us.ibm.com