lstopo 命令

常用示例

说明

lstopo displays hardware topology including CPUs, caches, memory, and I/O devices. It visualizes the hierarchical structure of the system from machine level down to individual cores and threads. The output shows NUMA nodes, packages (sockets), cores, and processing units (threads). Cache levels (L1, L2, L3) are displayed with their sizes and sharing between cores. Graphical output creates images showing the topology tree. Text mode (lstopo-no-graphics) works in terminals without graphics support. Understanding topology is important for performance optimization. It shows which cores share caches, which are on the same NUMA node, and how memory is organized. The tool can load topology from XML files, enabling offline analysis or comparison between systems.

参数

--of _FORMAT_

Output format (png, pdf, svg, xml, txt, console).

--only _TYPE_

Show only specific object types.

--whole-io

Show all I/O devices.

--no-io

Hide I/O devices.

-p, --physical

Show physical/OS indexes.

-l, --logical

Show logical indexes.

--merge

Merge identical objects.

--no-legend

Hide the legend.

--no-caches

Hide cache information.

-v, --verbose

Verbose output.

--input _FILE_

Read topology from XML file.

--version

Print version.