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virtualization:xenserver:xenserver_pwr_mgmt [2014/12/08 08:00]
gcooper 		virtualization:xenserver:xenserver_pwr_mgmt [2017/01/25 11:29] (current)
gcooper
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 ====== Citrix XenServer and Power Management ====== ====== Citrix XenServer and Power Management ======
 +
 +See also **[[computing:power_mgmt|Power Management]]**
 +
 +See also **[[https://www.sonoracomm.com/wiki/doku.php?do=search&id=xenserver|other XenServer pages in this wiki]]**
 +
 +https://wiki.xenserver.org/index.php?title=Power_Management
  
 http://www.ingmarverheij.com/damn-you-c-states-unexpected-xenserver-reboot/ http://www.ingmarverheij.com/damn-you-c-states-unexpected-xenserver-reboot/
  
 http://support.citrix.com/article/CTX127395 http://support.citrix.com/article/CTX127395
 +
 +:!: With newer XenServer versions, it is **no longer recommended to disable power management** in the server BIOS.
  
 :!: Disable all power management in the BIOS: :!: Disable all power management in the BIOS:
  
   * AMD Power Now   * AMD Power Now
 +  * Cool'n'Quiet
   * Intel SpeedStep   * Intel SpeedStep
 +  * Enhanced Intel SpeedStep (EIST)
  
 ===== Get Power Managemment Status ===== ===== Get Power Managemment Status =====
  
-A result above ''2'' indicates you need to disable power management in the BIOS:+On the XCP/XenServer host as ''root'': 
 +  
 +<file> 
 +xenpm get-cpufreq-states 
 +</file> 
 + 
 +No output indicates the (SpeedStep, PowerNow) power management has already been disabled. 
  
 <file> <file>
 xenpm get-cpuidle-states | grep total | uniq xenpm get-cpuidle-states | grep total | uniq
 </file> </file>
 +
 +If C2 or higher is listed and there is time spent in that higher level state, this indicates that higher level C-states are still active. Check BIOS settings to disable the higher C-states. 
 +
 +:!: A result above ''2'' indicates you need to disable power management in the BIOS.
  
 ===== BIOS Settings ===== ===== BIOS Settings =====
  
 :!: Disable all C-states, including C1E. :!: Disable all C-states, including C1E.
 +
 +:!: If the server BIOS has power management options that leave power management to the BIOS rather than the operating system such as **Dell Active Power Controller** or **HP Power Regulator**, also disable this by setting the power management option to **OS Control**.
  
 Dell: Dell:
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   * Advanced -> CPU Configuration -> CPU C6 Report   * Advanced -> CPU Configuration -> CPU C6 Report
  
-:!: If the server BIOS has power management options that leave power management to the BIOS rather than the operating system such as **Dell Active Power Controller** or **HP Power Regulator**, also disable this by setting the power management option to **OS Control**. 
virtualization/xenserver/xenserver_pwr_mgmt.1418050856.txt.gz · Last modified: 2014/12/08 08:00 by gcooper

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