|CPU||The logical CPU number of a CPU as used by the Linux kernel.|
|CORE||The logical core number. A core can contain several CPUs.|
|SOCKET||The logical socket number. A socket can contain several cores.|
|BOOK||The logical book number. A book can contain several sockets.|
|NODE||The logical NUMA node number. A node may contain several books.|
|CACHE||Information about how caches are shared between CPUs.|
|The physical address of a CPU.|
|ONLINE||Indicator that shows whether the Linux instance currently makes use of the CPU.|
|Indicator that shows if the hypervisor has allocated the CPU to the virtual hardware on which the Linux instance runs. CPUs that are configured can be set online by the Linux instance. This column contains data only if your hardware system and hypervisor support dynamic CPU resource allocation.|
This column contains data for Linux instances that run on virtual hardware with
a hypervisor that can switch the CPU dispatching mode (polarization). The
polarization can be:
-a, --all Include lines for online and offline CPUs in the output (default for -e). This option may only specified together with option -e or -p. -b, --online Limit the output to online CPUs (default for -p). This option may only be specified together with option -e or -p. -c, --offline Limit the output to offline CPUs. This option may only be specified together with option -e or -p. -e, --extended [=list] Display the CPU information in human readable format.
If the list argument is omitted, all columns for which data is available are included in the command output.
When specifying the list argument, the string of option, equal sign (=), and list must not contain any blanks or other white space. Examples: -e=cpu,node or --extended=cpu,node.
-h, --help Display help information and exit. -p, --parse [=list] Optimize the command output for easy parsing.
If the list argument is omitted, the command output is compatible with earlier versions of lscpu. In this compatible format, two commas are used to separate CPU cache columns. If no CPU caches are identified the cache column is omitted.
If the list argument is used, cache columns are separated with a colon (:).
When specifying the list argument, the string of option, equal sign (=), and list must not contain any blanks or other white space. Examples: -p=cpu,node or --parse=cpu,node.
-s, --sysroot directory Gather CPU data for a Linux instance other than the instance from which the lscpu command is issued. The specified directory is the system root of the Linux instance to be inspected. -x, --hex Use hexadecimal masks for CPU sets (for example 0x3). The default is to print the sets in list format (for example 0,1). -V, --version Display version information and exit.
The basic overview about CPU family, model, etc. is always based on the first CPU only.
Sometimes in Xen Dom0 the kernel reports wrong data.
On virtual hardware the number of cores per socket, etc. can be wrong.
Cai Qian <email@example.com> Karel Zak <firstname.lastname@example.org> Heiko Carstens <email@example.com>
The lscpu command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
|util-linux||LSCPU (1)||February 2011|