Module: Hyperctl

Defined in:
lib/hyperctl.rb,
lib/hyperctl/version.rb

Defined Under Namespace

Classes: Sysfs

Constant Summary collapse

VERSION = 
'0.1.0'

Class Method Summary collapse

Class Method Details

.disable(hctl) ⇒ Object

Disable all sibling cores

Parameters:



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# File 'lib/hyperctl.rb', line 20

def self.disable(hctl)
  cores = hctl.sibling_cores
  cores.each {|core_id| Hyperctl::Sysfs.disable_core(core_id) }
end

.enable(hctl) ⇒ Object

Enable all sibling cores

Parameters:



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# File 'lib/hyperctl.rb', line 8

def self.enable(hctl)
  # as far as I can tell, there's no way to discover the topology information
  # for which cores and siblings if either of them is disabled.  So we are
  # just trying to enable everything that is disabled...
  cores = hctl.offline_cores
  cores.each {|core_id| Hyperctl::Sysfs.enable_core(core_id) }
end

.status(hctl) ⇒ String

Generate a pretty formatted string of sibling core status

Parameters:

Returns:

  • (String) —

    the generated string



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# File 'lib/hyperctl.rb', line 30

def self.status(hctl)
  cpu_info = hctl.cpu_info
  text = ""
  cpu_info.each_key.sort_by {|k| cpu_info[k][:core_id] }.each do |k|
    cpu = cpu_info[k]
    state = cpu[:online] ? 'enabled' : 'disabled'
    ht = cpu.has_key?(:thread_siblings_list) ? 'enabled' : 'disabled'
    text << "#{sprintf('%-5s',k.to_s)}: #{sprintf('%-8s', state)}"
    text << " - hypertheading: #{ht}\n"
  end

  return text
end