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тАО08-30-2010 11:24 PM
тАО08-30-2010 11:24 PM
Green Power using HP-UX v3
Recently I upgrade a box to HP-UX11i v3. I want to check if I can save power when my system is idle.
I have HP rx7640 with "8 Intel(R) Itanium 2 9100 series processors dual core"
I changed pwr_idle_ctl to 1 and changed process power to dynamic using pstatectl.
How can I check if the system power-off the idle CPUs??
Thanks
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тАО08-30-2010 11:38 PM
тАО08-30-2010 11:38 PM
Re: Green Power using HP-UX v3
You can of course disable the CPU but you would have to boot them to use them.
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тАО08-31-2010 03:04 AM
тАО08-31-2010 03:04 AM
Re: Green Power using HP-UX v3
HTH
Duncan
I am an HPE Employee
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тАО09-05-2010 04:06 AM
тАО09-05-2010 04:06 AM
Re: Green Power using HP-UX v3
Thanks a lot. I need to know, why HP-UX didn't turn-off the CPUs ?
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
1 0.00 1.0% 0.0% 0.0% 99.0% 0.0% 0.0% 0.0% 0.0%
2 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
3 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
4 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
5 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
6 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
7 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
8 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
9 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
10 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
11 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
12 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
13 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
14 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
15 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
--- ---- ----- ----- ----- ----- ----- ----- ----- -----
avg 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
Thanks
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тАО09-05-2010 10:42 PM
тАО09-05-2010 10:42 PM
Re: Green Power using HP-UX v3
Did you read what Dennis said? Setting pwr_idle_ctl to 1 won't "turn off" or "power off" idle CPUs, it will simply cause them to be moved to a lower power state when idle at the cost of a little performance (as the processor has to be moved back to max perf mode as its usage is ramped up)
So did you run "pstatectl -v info" ? What was the output?
Also, take a look at the following slide deck:
http://h20338.www2.hp.com/hpux11i/downloads/power%20mgt%20slides.pdf
HTH
Duncan
I am an HPE Employee
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тАО09-06-2010 12:47 AM
тАО09-06-2010 12:47 AM
Re: Green Power using HP-UX v3
Thanks for replay, actually I didn't notice Denis reply. However, this is the output of pstatectl :
# pstatectl -v status
Highest hardware supported P-state: P2
CPU Active P-State Selected Range
--- -------------- --------------
0 P2 P0-P2
1 P2 P0-P2
2 P2 P0-P2
3 P2 P0-P2
4 P2 P0-P2
5 P2 P0-P2
6 P2 P0-P2
7 P2 P0-P2
8 P2 P0-P2
9 P2 P0-P2
10 P2 P0-P2
11 P2 P0-P2
12 P2 P0-P2
13 P2 P0-P2
14 P2 P0-P2
15 P2 P0-P2
P-state control is active
#
# pstatectl -v info
P-state Power Consumption Relative Performance
------- ----------------- --------------------
P0 97300 mW 100
P1 93500 mW 94
P2 89500 mW 88
#
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тАО09-06-2010 12:56 AM
тАО09-06-2010 12:56 AM
Re: Green Power using HP-UX v3
HTH
Duncan
I am an HPE Employee
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тАО09-06-2010 01:42 AM
тАО09-06-2010 01:42 AM
Re: Green Power using HP-UX v3
How are you doing ?
Thanks a lot for your reply. One of the things we are trying to achieve is to upgrade to HP-UX 11i v3, to get 30% better performance & to save used power. So, I'm now testing this on rx7640 and hope to get some useful information to make a decision about this.
Thanks a lot.