Linux性能统计 - cat /proc/meminfo

最新推荐文章于 2024-11-25 14:19:28 发布

原创

最新推荐文章于 2024-11-25 14:19:28 发布 · 5.4k 阅读

3 ·

CC 4.0 BY-SA版权

本文介绍了通过cat /proc/meminfo命令查看Linux系统内存信息，分别解释了32位和64位系统下的各项内存指标，如LowTotal、LowFree、SwapTotal、CommitLimit等，以及它们在系统内存管理中的作用。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

32位系统

$cat /proc/meminfo

MemTotal: 2052440 kB //Total amount of physical RAM, in kilobytes.
MemFree: 50004 kB //The amount of physical RAM, in kilobytes, left unused by the system.
Buffers: 19976 kB //The amount of physical RAM, in kilobytes, used for file buffers.
Cached: 436412 kB //The amount of physical RAM, in kilobytes, used as cache memory.
SwapCached: 19864 kB //The amount of swap, in kilobytes, used as cache memory.
Active: 1144512 kB //The total amount of buffer or page cache memory, in kilobytes, that is in active use. This is memory that has been recently used and is usually not reclaimed for other purposes.
Inactive: 732788 kB //The total amount of buffer or page cache memory, in kilobytes, that are free and available. This is memory that has not been recently used and can be reclaimed for other purposes.
Active(anon): 987640 kB
Inactive(anon): 572512 kB
Active(file): 156872 kB //Active(file), Inactive(file) has file back-end which means its original file is in disk but to use it faster it was loaded on RAM.
Inactive(file): 160276 kB
Unevictable: 8 kB
Mlocked: 8 kB
HighTotal: 1177160 kB //The total and free amount of memory, in kilobytes, that is not directly mapped into kernel space. The HighTotal value can vary based on the type of kernel used.
HighFree: 7396 kB
LowTotal: 875280 kB //The total and free amount of memory, in kilobytes, that is directly mapped into kernel space. The LowTotal value can vary based on the type of kernel used.