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Full Discussion: How Many Computers Do You Have Root Access At Work?
The Lounge What is on Your Mind? How Many Computers Do You Have Root Access At Work? Post 302278143 by agentrnge on Monday 19th of January 2009 12:12:57 PM
Old 01-19-2009
I am in a large disaster recovery shop. We have acres of systems of every flavor. I would say 90% of the time. 90% of them are idle.. unused.. root access available. If there not idle, customers are using and we cant touch it. Its amazing. Of course when they are idle.. they are not networked. So there is not a whole lot you can do with them other than play with the OS. But every industry flavor. Blade servers. 128 cpu superdomes. RS/6000. Sun. AMD/Intel.

And about 120 TB of SAN DASD that my team manages.

The thought of a uber-sneaker-net-seti@home monstrosity comes to mind.

At last rough count. between HP/Sun/RS6000 ~ 2500 CPUs not counting a farm of intel/amd based boxes.
 

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LEARN ABOUT HPUX

pwr_idle_ctl

pwr_idle_ctl(5) 						File Formats Manual						   pwr_idle_ctl(5)

NAME

       pwr_idle_ctl - control power consumption in idle processors on Integrity platforms

VALUES

   Fail Safe
   Default
   Allowed values
DESCRIPTION

       The  tunable  can be used to dynamically control the power consumption of idle processors on Integrity systems.	The tunable can be changed
       from through where represents the least power saving and represents the maximum power saving in idle processors.   Equal  or  greater  idle
       processor power saving is guaranteed by increasing the value of this tunable.

       When the tunable is set to the power saving feature is turned off.

       This  tunable  is  supported only on Integrity platforms with Intel(R) Itanium(R) Processors 9000 Series and later.  It is not supported on
       PA-RISC platforms.

       This tunable is not supported while running in a Integrity Virtual Machine guest environment.

   Who Is Expected to Change This Tunable?
       System administrators who want to control power utilization on idle processors.

   Restrictions on Changing
       The tunable will not take effect on processors belonging to processor sets whose lcpu attribute is turned ON.

       This tunable is dynamic.

   When Should the Tunable Be Turned On?
       The tunable should be turned on to save power on idle systems.

   What Are the Side Effects of Turning the Tunable On?
       Some workloads may experience performance degradation when the tunable is enabled.

   What Are the Side Effects of Turning the Tunable Off?
       With the tunable turned off, the system administrator may not take advantage of possible power saving on idle systems.

   What Other Tunables Should Be Changed at the Same Time?
       None.

WARNINGS

       All HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases	of
       HP-UX.

       Increase in power savings is not guaranteed with an increase in tunable values in certain environments.

       Enabling this tunable may impact the performance of certain types of workloads.

       Installation  of  optional  kernel  software, from HP or other vendors, may cause changes to tunable parameter values.  After installation,
       some tunable parameters may no longer be at the default or recommended values.  For information about the effects of installation  on  tun-
       able  values,  consult  the documentation for the kernel software being installed.  For information about optional kernel software that was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

SEE ALSO

       psrset(1M), lcpu_attr(5).

Integrity Systems Only					     Tunable Kernel Parameters						   pwr_idle_ctl(5)
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