3x+ battery life

orschiro · 2012-03-06 18:39:48

Or use pm-powersave to set them according to the state of your AC.

Regards

vwyodajl · 2012-03-06 19:28:10

or put it in /etc/acpi/handler.sh

nachiappan · 2012-03-07 08:01:23

I tried adding all inidividual entries into /etc/rc.local and restarted my machine. No values mentioned in the rc.local where set.
Below is my rc.local file. Please let me know if i need to do any corrections.
Also I dont have /etc/acpi/handler.sh, can i just create one folder named acpi in etc and a file called handler.sh inside acpi foler and put all the below setting ?

#!/bin/bash
#
# /etc/rc.local: Local multi-user startup script.
#
echo 60000 > /proc/sys/vm/dirty_expire_centisecs &
echo 5 > /proc/sys/vm/laptop_mode &
echo 1 > /sys/devices/system/cpu/sched_mc_power_savings &
echo 1 > /sys/devices/system/cpu/sched_smt_power_savings &
echo 60 > /proc/sys/vm/dirty_ratio &
echo 60000 > /proc/sys/vm/dirty_writeback_centisecs &
cat echo 60000 > /proc/sys/vm/dirty_writeback_centisecs &
echo 1 > /sys/module/snd_hda_intel/parameters/power_save &
echo 1 > /sys/module/i915/parameters/i915_enable_rc6 &
for i in /sys/class/scsi_host/host*/link_power_management_policy; do echo min_power > $i; done &
for i in /sys/bus/usb/devices/*/power/control; do echo auto > $i; done &
for i in $(ls /sys/bus/usb/devices/*/power/level);do echo auto > $i;done &
for i in $(ls /sys/bus/{pci,i2c}/devices/*/power/control);do echo auto > $i;done &
echo -n 10 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor &
echo -n 15 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold &

Regards,
Nachi

Last edited by nachiappan (2012-03-07 08:15:13)

taylorchu · 2012-03-07 08:04:49

just one more discovery.
irqbalance dramatically reduces system interrupts.
i highly recommend everyone to install this because it makes system run smoother by balancing out the load, and add 30 to 40 minutes battery life.
this update is included in the main thread.

el mariachi · 2012-03-07 08:37:55

It doesn't change anything for me... (irqbalance).
The kernel already balances the load:

sudo cat /proc/irq/*/smp_affinity

Bound to cpu0 - 1
Bound to cpu1 - 2
Bound to cpu0 and/or cpu1 - 3
Bound to cpu3,4,7 - 282

taylorchu · 2012-03-07 19:20:04

you are right because irqbalance is enabled in kernel config

Earnestly · 2012-03-07 21:05:55

taylorchu wrote:

you are right because irqbalance is enabled in kernel config

Then how did you gain 30-40 minutes of battery life?

At any rate, here's some documentation about Tuned IRQs

broken pipe · 2012-03-08 09:36:17

so much time? i thought it's just good for overall performance

taylorchu · 2012-03-08 10:06:25

Kaustic wrote:

taylorchu wrote:
you are right because irqbalance is enabled in kernel config
Then how did you gain 30-40 minutes of battery life?
At any rate, here's some documentation about Tuned IRQs

because i did not use archlinux default kernel. so if you use arch default, you can skip irqbalance.

Earnestly · 2012-03-08 12:12:27

Ah fair enough.
Do you think that your (non-default) kernel configuration has any other [side-]effects on power and performance regarding all the other options you've listed?

taylorchu · 2012-03-09 08:52:51

i created aur package called "powerdown".
you just install the package and add "powerdown &" to rc.local.

jocheem67 · 2012-03-12 05:53:11

I tried adding all inidividual entries into /etc/rc.local and restarted my machine. No values mentioned in the rc.local where set.
Below is my rc.local file. Please let me know if i need to do any corrections.
Also I dont have /etc/acpi/handler.sh, can i just create one folder named acpi in etc and a file called handler.sh inside acpi foler and put all the below setting ?

You can put 'm in a script and point to that script from within rc.local:

sleep 10 && /home/%%%%%%/power_saving.sh

The sleep is important in my case

Last edited by jocheem67 (2012-03-12 05:53:41)

nachiappan · 2012-03-14 17:58:54

How do I check if irqbalance is already enabled ?
I tried $sudo cat /proc/irq/*/smp_affinity .. and below is the output.. How do I read the below output ?
ff
0f
0f
0f
0f
0f
0f
0f
0f
0f
ff
0f
0f
0f
0f
0f
0f
0f
0f
0f
0f
0f
0f
0f

toad · 2012-03-14 20:16:44

Very nice

When I run powerdown I get the following output:

toad@archtop 526\27 ~/.kde4/share/config > FATAL: Module uvcvideo not found.
Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan0 ; Operation not supported.

/dev/sda6:
 setting fs readahead to 2048
 setting Advanced Power Management level to 0x01 (1)
 setting standby to 6 (30 seconds)
 readahead     = 2048 (on)
 APM_level      = 1

/dev/sda5:
 setting fs readahead to 2048
 setting Advanced Power Management level to 0x01 (1)
 setting standby to 6 (30 seconds)
 readahead     = 2048 (on)
 APM_level      = 1

/dev/sda7:
 setting fs readahead to 2048
 setting Advanced Power Management level to 0x01 (1)
 setting standby to 6 (30 seconds)
 readahead     = 2048 (on)
 APM_level      = 1
FATAL: Module bluetooth not found.
^C

taylorchu · 2012-03-15 06:20:30

@nachiappan
you dont have to check at all. i am 100% sure it is enabled for everyone in vanilla arch linux kernel.

@toad
if you run this with root privilege, it looks fine to me.
i could have suppressed the module and the hdparm err msg, but this actually tells you more about your system.

toad · 2012-03-15 06:35:13

Yep, ran it as root, was just confused that it suddenly stopped dead with "FATAL: Module bluetooth not found."

Perhaps some sort of "All is fluffy" message to tell the non-code-reading-dumbass user like me that things are rosy?

taylorchu · 2012-03-17 19:14:14

ready in aur

broken pipe · 2012-03-17 19:58:35

oh you edited your first post and all goodies are gone

stupid question, but which hdparm options should be applied on a ssd? spindown? write through? etc.

taylorchu · 2012-03-17 20:36:18

https://github.com/taylorchu/powerdown/ … /powerdown

ssd does not need hdparm. when you run it, it has no effect.
however, ssd does support readahead.

broken pipe · 2012-03-17 21:21:01

ok thx, you're great!
yes readahead is enabled through systemd.

intrntbrn · 2012-03-21 19:09:11

nice script. on powertop2 are still these values "bad"
does someone know how to disable them permanently?

Bad VM writeback timeout
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family 2 port SATA IDE Controller
Bad Runtime PM for PCI Device Ricoh Co Ltd MMC/SD Host Controller
Bad Runtime PM for PCI Device Intel Corporation Centrino Advanced-N 6205
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family 4 port SATA IDE Controller
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1
Bad Runtime PM for PCI Device Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family KT Controller
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5
Bad Runtime PM for PCI Device Intel Corporation 2nd Generation Core Processor Family DRAM Controller
Bad Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1

got another problems: when running powerdown via rc.local my system takes about 1min+ until i can login at slim. and then other autostarts like autoconnection to wlan via wicd doesnt work.

Last edited by intrntbrn (2012-03-21 19:20:17)

taylorchu · 2012-03-23 02:58:36

@intrntbrn
let me try to fix these. but powertop2 is really out-of-date, you should not trust it much.

intrntbrn · 2012-03-30 15:22:33

it wasnt your script. i forgot to build my kernel with ahci and was booting @compatible mode. everything works, but i stay with tlp.

Last edited by intrntbrn (2012-03-30 15:23:28)

el mariachi · 2012-03-30 15:40:14

I was expecting this script my laptop's temperature, but the decrease is very slight. It still cruises (chromium with 5 tabs open, two libreoffice writer windows open and transmission) @60ºC, although actual cpu usage is always <10%. Have you tried any undervolting methods? I tried intel-phc but it invariably crashes my system (used to work with 2.26 kernels; doesn't work with the newer patches for 3.x; yes I have an intel cpu ) zen-kernel has a voltage control option, but I don't understand how to make use of it.

Other than that (i.e. for the purpose it was built), the scripts works fine

twilight0 · 2012-03-31 14:12:32

Powerdown is actually nice, although I think it is too aggressive when it comes to hard drive spin down timeouts.

I am using pm-utils + acpid + laptop-mode

Machine: Dell XPS L702X, Intel Core i7 2670QM, Geforce GT555M with no Optimus

Windows: ~3h 30 min moderate use, lowest brightness
Arch: ~4h moderate use, lowest brightness

I think power regression on 3.3 linux kernel will be history.

Arch Linux

#51 2012-03-06 18:39:48

Re: 3x+ battery life

#52 2012-03-06 19:28:10

Re: 3x+ battery life

#53 2012-03-07 08:01:23

Re: 3x+ battery life

#54 2012-03-07 08:04:49

Re: 3x+ battery life

#55 2012-03-07 08:37:55

Re: 3x+ battery life

#56 2012-03-07 19:20:04

Re: 3x+ battery life

#57 2012-03-07 21:05:55

Re: 3x+ battery life

#58 2012-03-08 09:36:17

Re: 3x+ battery life

#59 2012-03-08 10:06:25

Re: 3x+ battery life

#60 2012-03-08 12:12:27

Re: 3x+ battery life

#61 2012-03-09 08:52:51

Re: 3x+ battery life

#62 2012-03-12 05:53:11

Re: 3x+ battery life

#63 2012-03-14 17:58:54

Re: 3x+ battery life

#64 2012-03-14 20:16:44

Re: 3x+ battery life

#65 2012-03-15 06:20:30

Re: 3x+ battery life

#66 2012-03-15 06:35:13

Re: 3x+ battery life

#67 2012-03-17 19:14:14

Re: 3x+ battery life

#68 2012-03-17 19:58:35

Re: 3x+ battery life

#69 2012-03-17 20:36:18

Re: 3x+ battery life

#70 2012-03-17 21:21:01

Re: 3x+ battery life

#71 2012-03-21 19:09:11

Re: 3x+ battery life

#72 2012-03-23 02:58:36

Re: 3x+ battery life

#73 2012-03-30 15:22:33

Re: 3x+ battery life

#74 2012-03-30 15:40:14

Re: 3x+ battery life

#75 2012-03-31 14:12:32

Re: 3x+ battery life

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