x86info man page

x86info — display x86 CPU diagnostics


x86info [-a]  [-c]  [-f] [fB-F]  [-m] [-mhz]  [-r]  [?]  [--all]  [--cache] [--flags] [--verbose]  [--msr]  [--mhz]  [--registers]  [--help]  


This manual page documents x86info, a  program which displays a range of information about the CPUs  present in an x86 system.

In order to make full use of this program you need to have the CPU ID and MSR device drivers in your kernel with accessible device files /dev/cpu/<n>/cpuid and /dev/cpu/<n>/msr.


This program follows the usual GNU command line syntax, with  long options starting with two dashes (`-').  A summary of options  is included below.

?           --help        

Show summary of options.

-a           --all        

Show all information.  Equivalent to  -c -f -m    -r -mhz.  

-c           --cache        

Show TLB, cache sizes and cache associativity.

-f           --flags        

Show CPU feature flags.

-m           --msr        

Dump model specific registers.  This feature is currently only  supported on a few different processors. Future versions will include parsing of bits in MSRs for all processors.  

-mhz           --mhz        

Estimate current clock rate.

-mp            --mptable      

Dump MP table showing CPUs BIOS knows about.

-r           --registers        

Show register values from all possible cpuid calls.

-s           --show-machine-check        

Show machine check exception information.

-v           --verbose        

Show verbose descriptions.


x86info was written by Dave Jones  <davej@redhat.com>.

This manual page was written by Mark Brown <broonie@debian.org> for  the Debian GNU/Linux system (but may be used by others).

Permission is granted to copy, distribute and/or modify this  document under the terms of the GNU General Public License version 2.

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