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Hi,
How can I see how much watts my cpu is using. Is there a command? A program?
Last edited by Ventil1 (2010-03-18 15:59:50)
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maybe powertop can help you
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OK. But I don't know how. People are talking about how their eeepc uses 6watts. I wanna see how much mine uses.
$ sudo powertop -h
Usage: powertop [OPTION...]
-d, --dump read wakeups once and print list of top offenders
-t, --time=DOUBLE default time to gather data in seconds
-h, --help Show this help message
-v, --version Show version information and exit
$ sudo powertop -d
PowerTOP 1.11 (C) 2007, 2008 Intel Corporation
Collecting data for 15 seconds
< Detailed C-state information is not available.>
P-states (frequencies)
Wakeups-from-idle per second : 40,3 interval: 15,0s
no ACPI power usage estimate available
Top causes for wakeups:
48,7% ( 90,3) <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
14,9% ( 27,7) USB device 3-1 : USB Receiver (Logitech)
14,9% ( 27,6) <interrupt> : ohci_hcd:usb3, HDA Intel
5,2% ( 9,6) <interrupt> : wlan0
3,2% ( 5,9) thunderbird-bin : hrtimer_start_range_ns (hrtimer_wakeup)
2,2% ( 4,0) <kernel core> : hrtimer_start (tick_sched_timer)
2,0% ( 3,7) <interrupt> : acpi
1,3% ( 2,4) <kernel IPI> : Rescheduling interrupts
1,1% ( 2,0) <kernel core> : clocksource_watchdog (clocksource_watchdog)
1,0% ( 1,9) sakura : hrtimer_start_range_ns (hrtimer_wakeup)
0,8% ( 1,5) <kernel IPI> : TLB shootdowns
0,7% ( 1,3) tint2 : acpi_ec_transaction_unlocked (process_timeout)
0,5% ( 1,0) <interrupt> : ehci_hcd:usb2, nvidia
0,5% ( 1,0) chromium : hrtimer_start_range_ns (hrtimer_wakeup)
0,5% ( 1,0) <kernel core> : run_timer_softirq (nv_kern_rc_timer)
0,3% ( 0,6) <interrupt> : ahci
0,3% ( 0,5) conky : hrtimer_start_range_ns (hrtimer_wakeup)
0,3% ( 0,5) <kernel core> : enqueue_task_rt (sched_rt_period_timer)
0,3% ( 0,5) <kernel core> : run_timer_softirq (check_rfctrl_gpio_timer)
0,3% ( 0,5) <kernel core> : run_timer_softirq (watch_dog_timer_callback)
0,2% ( 0,4) <kernel IPI> : Function call interrupts
0,2% ( 0,3) <kernel core> : dev_watchdog (dev_watchdog)
0,2% ( 0,3) X : hrtimer_start_range_ns (hrtimer_wakeup)
0,1% ( 0,2) init : hrtimer_start_range_ns (hrtimer_wakeup)
0,1% ( 0,1) tint2 : hrtimer_start_range_ns (hrtimer_wakeup)
0,1% ( 0,1) crond : hrtimer_start_range_ns (hrtimer_wakeup)
0,0% ( 0,1) <interrupt> : PS/2 keyboard/mouse/touchpad
0,0% ( 0,1) gconfd-2 : hrtimer_start_range_ns (hrtimer_wakeup)
0,0% ( 0,1) thunderbird-bin : start_this_handle (commit_timeout)
0,0% ( 0,1) flush-8:0 : scsi_request_fn (blk_rq_timed_out_timer)
0,0% ( 0,1) events/1 : queue_delayed_work (delayed_work_timer_fn)
A USB device is active 100,0% of the time:
USB device 3-1 : USB Receiver (Logitech)
Suggestion: Enable USB autosuspend by pressing the U key or adding
usbcore.autosuspend=1 to the kernel command line in the grub config
Suggestion: Enable SATA ALPM link power management via:
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
or press the S key.
Recent USB suspend statistics
Active Device name
0,0% USB device 4-3 : BT-270 (Broadcom Corp)
100,0% USB device 3-1 : USB Receiver (Logitech)
0,0% USB device 1-3 : USB2.0 UVC VGA WebCam (Image Processor)
0,0% USB device usb4 : OHCI Host Controller (Linux 2.6.32-ARCH ohci_hcd)
100,0% USB device usb3 : OHCI Host Controller (Linux 2.6.32-ARCH ohci_hcd)
0,0% USB device usb2 : EHCI Host Controller (Linux 2.6.32-ARCH ehci_hcd)
0,0% USB device usb1 : EHCI Host Controller (Linux 2.6.32-ARCH ehci_hcd)
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run with battery and without AC, and simply launch as root:
powertop
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OK. It works now.
Wow. It uses 15.1W. That's a lot!
Thanks a lot for helping me takedown
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not at all... can you add [solved] at the title of this thread?
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Nice post. Pretty cool little tool. To find out how much you use on AC use a power meter on your outlet. Plug laptop into power meter.
Here are a few:
http://www.powercostmonitor.com/c139/me … e_plug.php
EDIT: This will show how much power is actually being drawn, not how much is being used. It's still more accurate then measuring from within the laptop....
Last edited by jimburnettva (2010-03-18 14:35:28)
My Linux & Progamming Blog - Jimmy Burnett
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