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Full Discussion: Question on /proc/cpuinfo
Operating Systems Linux Red Hat Question on /proc/cpuinfo Post 302605216 by jlliagre on Wednesday 7th of March 2012 02:31:08 AM
Old 03-07-2012
This is likely due to hyper-threading. Each core supports two threads reported as separate virtual CPUs.
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Sys::Statistics::Linux::SysInfo(3pm)			User Contributed Perl Documentation		      Sys::Statistics::Linux::SysInfo(3pm)

NAME
Sys::Statistics::Linux::SysInfo - Collect linux system information. SYNOPSIS
use Sys::Statistics::Linux::SysInfo; my $lxs = Sys::Statistics::Linux::SysInfo->new; my $info = $lxs->get; DESCRIPTION
Sys::Statistics::Linux::SysInfo gathers system information from the virtual /proc filesystem (procfs). For more information read the documentation of the front-end module Sys::Statistics::Linux. SYSTEM INFOMATIONS
Generated by /proc/sys/kernel/{hostname,domainname,ostype,osrelease,version} and /proc/cpuinfo, /proc/meminfo, /proc/uptime, /proc/net/dev. hostname - The host name. domain - The host domain name. kernel - The kernel name. release - The kernel release. version - The kernel version. memtotal - The total size of memory. swaptotal - The total size of swap space. uptime - The uptime of the system. idletime - The idle time of the system. pcpucount - The total number of physical CPUs. tcpucount - The total number of CPUs (cores, hyper threading). interfaces - The interfaces of the system. arch - The machine hardware name (uname -m). # countcpus is the same like tcpucount countcpus - The total (maybe logical) number of CPUs. "pcpucount" and "tcpucount" are really easy to understand. Both values are collected from "/proc/cpuinfo". "pcpucount" is the number of physical CPUs, counted by "physical id". "tcpucount" is just the total number counted by "processor". If you want to get "uptime" and "idletime" as raw value you can set $Sys::Statistics::Linux::SysInfo::RAWTIME = 1; # or with Sys::Statistics::Linux::SysInfo->new(rawtime => 1) METHODS
new() Call "new()" to create a new object. my $lxs = Sys::Statistics::Linux::SysInfo->new; get() Call "get()" to get the statistics. "get()" returns the statistics as a hash reference. my $info = $lxs->get; EXPORTS
No exports. SEE ALSO
proc(5) REPORTING BUGS
Please report all bugs to <jschulz.cpan(at)bloonix.de>. AUTHOR
Jonny Schulz <jschulz.cpan(at)bloonix.de>. COPYRIGHT
Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-03-09 Sys::Statistics::Linux::SysInfo(3pm)
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